ROTEX HPSU compact Installation and Operating...

For certified companies and for the operator

ROTEX HPSU compactInstallation and Operating Instruction Manual

Solar tank with integrated interior heat pump unit

For the typesHPSU compact 304HPSU compact 308HPSU compact 508HPSU compact 516

GBOutput

List of contents

2 FA ROTEX HPSU compact 4 -

1 Guarantee and conformity . . . . . . . . . . . . . 31.1 Warranty conditions . . . . . . . . . . . . . . . . . . . . . . 31.2 Declaration of conformity . . . . . . . . . . . . . . . . . . 3

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.1 Observing instructions . . . . . . . . . . . . . . . . . . . . 42.2 Warning signs and explanation of symbols . . . . 4

2.2.1 Meaning of the warnings . . . . . . . . . . . . . . . . . . . . .42.2.2 Validity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42.2.3 Handling instructions. . . . . . . . . . . . . . . . . . . . . . . .4

2.3 Avoid danger . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.4 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.5 Instructions for operating safety . . . . . . . . . . . . . 5

2.5.1 Before working on the hydraulic system . . . . . . . . .52.5.2 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . .52.5.3 Working on cooling systems (Heat pump) . . . . . . .52.5.4 Site of installation . . . . . . . . . . . . . . . . . . . . . . . . . .62.5.5 Heating system and sanitary connection . . . . . . . .62.5.6 Requirements for the heating water . . . . . . . . . . . .62.5.7 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62.5.8 Instructing the user/owner. . . . . . . . . . . . . . . . . . . .6

3 Product description. . . . . . . . . . . . . . . . . . . 73.1 Design and components . . . . . . . . . . . . . . . . . . 7

3.1.1 Top of unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73.1.2 Outside of unit and internal structure ROTEX

HPSU compact 304/308 . . . . . . . . . . . . . . . . . . . . .83.1.3 Outside of unit and internal structure ROTEX

HPSU compact 304/308 (BIV) . . . . . . . . . . . . . . . .93.1.4 Outside of unit and internal structure ROTEX

HPSU compact 508/516 . . . . . . . . . . . . . . . . . . . .103.1.5 Outside of unit and internal structure ROTEX

HPSU compact 508/516 (BIV) . . . . . . . . . . . . . . .11

4 Set-up and installation . . . . . . . . . . . . . . . 134.1 Dimensions and connections . . . . . . . . . . . . . . 13

4.1.1 ROTEX HPSU compact 304/308 (BIV) . . . . . . . . .134.1.2 ROTEX HPSU compact 508/516 (BIV) . . . . . . . . .144.1.3 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . .14

4.2 Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154.3 Hydraulic connection . . . . . . . . . . . . . . . . . . . . 164.4 Electrical connection . . . . . . . . . . . . . . . . . . . . 17

4.4.1 Overall connection plan ROTEX HPSU compact .184.4.2 Position of the circuit boards . . . . . . . . . . . . . . . . .194.4.3 Terminal assignment RTX AL4 circuit board. . . . .194.4.4 Terminal assignment RTX EHS circuit board . . . .194.4.5 Connection assignment, circuit board A1P . . . . . .204.4.6 Connection assignment, Circuit board

RoCon BM1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.4.7 Mains connection ROTEX HPSU compact . . . . . .214.4.8 Removing the protective cover . . . . . . . . . . . . . . .214.4.9 Connection of RRLQ exterior heat pump unit . . . .224.4.10 Connection of external temperature sensor

RoCon OT1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224.4.11 Connecting the ROTEX solar installation . . . . . . .234.4.12 Connection to ROTEX Backup Heater . . . . . . . . .234.4.13 Connection of ROTEX room thermostat . . . . . . . .244.4.14 Connection ROTEX room controller RoCon U1 . .244.4.15 Connection of ROTEX mixer module RoCon M1 .244.4.16 Internet gateway ROTEX RoCon G1 . . . . . . . . . .254.4.17 connection ROTEX HP convector. . . . . . . . . . . . .254.4.18 Connection of switching contact (AUX output) . . .254.4.19 Low-cost connector (HT/NT) . . . . . . . . . . . . . . . . .254.4.20 Connection intelligent controller

(Smart Grid - SG) . . . . . . . . . . . . . . . . . . . . . . . . .26

4.4.21 Symbols and legend keys on connection and circuit diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.5 Laying refrigerant lines . . . . . . . . . . . . . . . . . . 284.6 Pressure test and vacuum . . . . . . . . . . . . . . . 284.7 Filling and topping up the heating system. . . . 284.8 Filling and topping up the storage tank . . . . . . 28

5 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . .295.1 Initial start-up. . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.1.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 295.1.2 Setting the controller parameters . . . . . . . . . . . . 295.1.3 Discharge the circulation pump and check the

minimum flow . . . . . . . . . . . . . . . . . . . . . . . . . . . 305.1.4 Configuring the screed function parameters

(only if needed) . . . . . . . . . . . . . . . . . . . . . . . . . . 315.2 Re-commissioning. . . . . . . . . . . . . . . . . . . . . . 31

5.2.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 315.2.2 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6 Decommissioning . . . . . . . . . . . . . . . . . . . .326.1 Temporary shutdown . . . . . . . . . . . . . . . . . . . 32

6.1.1 Draining the storage tank . . . . . . . . . . . . . . . . . . 326.1.2 Draining the heating circuit and hot water circuit. 33

6.2 Final shutdown . . . . . . . . . . . . . . . . . . . . . . . . 34

7 Service and maintenance . . . . . . . . . . . . . .357.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357.2 Removing the protective cover . . . . . . . . . . . . 357.3 Activities to be performed annually . . . . . . . . . 357.4 Filling and topping up the heating system. . . . 377.5 Filling and topping up the storage tank . . . . . . 38

8 Faults and malfunctions . . . . . . . . . . . . . . .398.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 39

8.1.1 Current fault display . . . . . . . . . . . . . . . . . . . . . . 398.1.2 Reading the Protocol. . . . . . . . . . . . . . . . . . . . . . 398.1.3 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . 39

8.2 Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . 408.3 Fault codes . . . . . . . . . . . . . . . . . . . . . . . . . . . 438.4 Configuration DIP switch. . . . . . . . . . . . . . . . . 46

9 Hydraulic system connection. . . . . . . . . . .47

10 Technical data . . . . . . . . . . . . . . . . . . . . . . .5010.1 Equipment data . . . . . . . . . . . . . . . . . . . . . . . . 50

10.1.1 ROTEX HPSU compact 304/308 (BIV) . . . . . . . . 5010.1.2 ROTEX HPSU compact 508/516 (BIV) . . . . . . . . 52

10.2 Characteristic lines . . . . . . . . . . . . . . . . . . . . . 5410.2.1 Sensor characteristic lines . . . . . . . . . . . . . . . . . 5410.2.2 Characteristic curves for pumps . . . . . . . . . . . . . 55

10.3 Tightening torque . . . . . . . . . . . . . . . . . . . . . . 5510.4 Circuit diagram ROTEX HPSU compact . . . . . 56

11 List of keywords . . . . . . . . . . . . . . . . . . . . .57

12 Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

1 x Guarantee and conformity

FA ROTEX HPSU compact 4 - 3

1 Guarantee and conformity

1.1 Warranty conditionsThe legal guarantee conditions fundamentally apply. Our war-ranty conditions beyond that can be found online on your sales representative's webpage.

1.2 Declaration of conformity

For the Solar tank with integrated interior heat pump unit in the HPSU compact series.

We, ROTEX Heating Systems GmbH, declare under our sole responsibility that the products.

Product Order No. Product Order No.HPSU compact 304 (H/C) DB 14 15 30 HPSU compact 304 (H/C) BIV 14 15 34HPSU compact 308 (H/C) DB 14 15 31 HPSU compact 308 (H/C) BIV 14 15 35HPSU compact 508 (H/C) DB 14 15 32 HPSU compact 508 (H/C) BIV 14 15 36HPSU compact 516 (H/C) DB 14 15 33 HPSU compact 516 (H/C) BIV 14 15 37HPSU compact 304 (H) DB 14 15 39 HPSU compact 304 (H) BIV 14 15 42HPSU compact 308 (H) DB 14 15 40 HPSU compact 308 (H) BIV 14 15 43HPSU compact 508 (H) DB 14 15 41 HPSU compact 508 (H) BIV 14 15 44HPSU compact 516 (H) DB 14 15 38 HPSU compact 516 (H) BIV 14 15 45

comply, in their standard design, with the following European Directives:

2004/108/EC Electromagnetic Compatibility Directive

2006/95/EC EC Low Voltage Directive

Güglingen, 01.03.2013 Dr.-Ing. Franz Grammling Managing Director


2 x Safety2 Safety

2.1 Observing instructionsThese instructions are a >> Translation of the original version << in your language.

Please read this manual carefully and thoroughly before pro-ceeding with the installation or modification of the heating system.

These instructions are aimed at people who are authorised and who have successfully completed a qualifying technical or skilled manual training program for the particular work to be carried out and who have participated in a professional development seminar held by the appropriate responsible authority. This, in particular, includes heating specialists and climate control techni-cians who have experience, as a result of their technical training and their knowledge of the subject, of proper and appropriate in-stallation and maintenance of heating, climate control and cooling installations and heat pumps.

This manual provides all the necessary information for instal-lation, start-up and maintenance, as well as basic information on operation and settings. All parameters needed for trouble-free operation have been configured at the factory. Please go through the attached documents for a detailed description of operation and control.

Relevant documents– ROTEX HPSU compact:

– Operating instructions for the user/owner– Operating manual for the user/owner

– ROTEX RoCon HP: Operating instructions of the controller– External unit for ROTEX HPSU compact; the associated

installation and operating instructions.– When connecting to a ROTEX solar system; the associated

installation and operating instructions.– When connecting a ROTEX HP convector; the associated

installation and operating instructions.– If a ROTEX room controller is connected; the associated

installation and operating instructions.

The guides are included in the scope of supply for the individual units.

2.2 Warning signs and explanation of symbols

2.2.1 Meaning of the warningsWarnings in this manual are classified according into their se-verity and probability of occurrence.

Special warning signsSome types of danger are represented by special symbols:

2.2.2 ValiditySome information in this manual has limited validity. The validity is highlighted by a symbol.

2.2.3 Handling instructionsInstructions on actions are shown as a list. Actions of whichthe sequential order must be maintained are numbered.DANGER!

Draws attention to imminent danger.

Disregarding this warning can lead to serious injury or death.

WARNING!

Indicates a potentially dangerous situation.

Disregarding this warning can result in serious injury or death.

CAUTION!

Indicates a situation which may cause possible damage.

Disregarding this warning can lead to damage to property and the environment.

This symbol identifies user tips and particularly useful information, but not warnings or hazards.

Electric power

Risk of burning or scalding

Risk of environmental damage

Danger of local freezing up

Health impairing or irritant materials

Prescribed temperature for continuous use

Danger of explosion

Pay attention to the stipulated tightening torque (see chapter 10.3 "Tightening torque")Only applicable for the unpressurised system (Drain Back)Only applicable for the pressurised system

Results of actions are identified with an arrow.

Entry into a setting procedure

Exit from a setting procedure

2 x Safety


2.3 Avoid dangerThe ROTEX HPSU compact is state-of-the-art and is built to meet all recognised technical requirements. However, improper use may result in serious physical injuries or death, as well as property damage.

To prevent such risks, install and operate ROTEX HPSU compact only:– as stipulated and in perfect condition,– with an awareness of the safety and hazards involved.

This assumes knowledge and use of the contents of this manual, the relevant accident prevention regulations and the recognised safety-related and occupational medical rules.

2.4 Intended useThe ROTEX HPSU compact may only be used for preparation of warm water, as a room heating system, and depending on its design, as a room cooling system. The ROTEX HPSU compact must be installed, connected and operated only according to the indications in this manual.

Only use of a suitable external unit approved by ROTEX is per-mitted. The following combinations are permissible in this re-spect:

Tab. 2-1 Permissible combinations of ROTEX exterior heat pump units and ROTEX HPSU compact internal units

Any other use outside the intended use is considered as im-proper. The operator alone shall bear responsibility for any re-sulting damage.

Proper use also includes observing the relevant maintenance and servicing conditions. Spare parts must at least satisfy the technical requirements defined by the manufacturer. This is the case, for example, with original spare parts.

2.5 Instructions for operating safety

2.5.1 Before working on the hydraulic systemWork on the ROTEX HPSU compact (such as setup,servicing, connection and initial start-up) is only to be carriedout by persons who are authorised and who have success-fully completed qualifying technical or vocational training andwho have taken part in advanced training sessions recog-nised by the appropriate responsible authorities. This, inparticular, includes heating specialists and climate controltechnicians who have experience, as a result of theirtechnical training and their knowledge of the subject, ofproper and appropriate installation and maintenance ofheating, climate control and cooling installations and heatpumps.Switch off the external main switch before starting any workon the ROTEX HPSU compact and secure it against uninten-tional switch-on.Seals must not be damaged or removed.Make sure that the safety valves comply with the require-ments of EN 12828 when connecting on the heating side, andwith the requirements of EN 12897 when connecting on thedomestic water side.Only original ROTEX replacement parts may be used.

2.5.2 Electrical installationElectrical installation may be carried out only by electricalengineers and in compliance with the valid electro-technicalguidelines as well as the regulations of the relevant energysupply company (EVU).Compare the mains voltage (~230 V, 50 Hz or ~400 V, 50 Hz) indicated on the type plate with the supply voltage beforeconnecting to the mains.Before beginning work on live parts, disconnect them from the power supply (switch off external main switch, remove fuse)and secure against unintentional restart.Equipment covers and service panels must be replaced assoon as the work is completed.

2.5.3 Working on cooling systems (Heat pump)

Always wear safety goggles and protective gloves.When working on the refrigerant circuit, ensure that theworkplace is well ventilated.Never carry out work on the refrigerant circuit in closed rooms or work pits.Do not let refrigerant come into contact with open fire, embers or hot objects.Never allow refrigerant to escape into the atmosphere (highpressure at the point of the leak).When removing the service pipes from the filling connections, never hold the connections in the direction of your body.Residual refrigerant could escape.Components and spare parts must at least satisfy thetechnical requirements defined by the manufacturer.

WARNING!

This unit is not intended for use by persons (including children) with impaired physical, sensory or mental faculties or persons with insufficient experience and/or expertise unless supervised by a person responsible for ensuring their safety or are given instruction by this person on how to use the unit.

Internal unit External unit

HPSU compact 4 304 (H/C) DBRRLQ004CAV3

HPSU compact 4 304 (H/C) BIV

HPSU compact 4 308 (H/C) DB

RRLQ006CAV3

RRLQ008CAV3


HPSU compact 4 508 (H/C) DB


HPSU compact 4 516 (H/C) DB RRLQ011CA(V3/W1)

RRLQ014CA(V3/W1)

RRLQ016CA(V3/W1)HPSU compact 4 516 (H/C) BIV

For work on stationary refrigeration systems (heat pumps) and air conditioning systems, proof of expertise is required in the European Community according to the F-Gases Directive (EC) No. 842/2006.

– Up to 3 kg coolant fill quantity: Stationary equip-ment qualification category 2

– 3 kg coolant fill quantity or over: expert certifi-cate category 1


2 x Safety2.5.4 Site of installationFor safe and fault-free operation, it is necessary that the instal-lation location of the ROTEX HPSU compact fulfils certain cri-teria. Related information can be found in chapter 4.2.

Information on the installation site of other components can be found in the associated documentation supplied with them.

2.5.5 Heating system and sanitary connectionCreate a heating system according to the safety requirements of EN 12828.With sanitary connection, you must observe;– EN 1717 - Protection of domestic water from contamina-

tion in domestic water installations and general require-ments concerning safety equipment for the prevention ofdomestic water contamination by back-flow

– EN 806 - Technical regulations for domestic water instal-lations (TRWI)

– and, in addition, the country-specific legal regulations.

The connection of a solar installation, an electric heating rod or an alternative heat generator may cause the storage temperature to exceed 60 °C.

For this reason you should fit scalding protection (e.g. VTA32+ Verschraubungsset 1") during installation.

If the ROTEX HPSU compact is connected to a heating system with steel pipes, radiators or non-diffusion-proof floor heating pipes, slurry and swarf could enter the hot water storage tank and cause blockages, local overheating or corrosion.

To prevent possible damage, fit a dirt filter or sludgeseparator into the heating return flow of the system.– SAS 1

2.5.6 Requirements for the heating waterAvoid damage caused by deposits and corrosion: Observe the relevant regulations of technology to prevent creation of cor-rosion products and deposits.

Measures for desalination, softening or hardness stabilization are necessary, if the filling and top-up water have a high total hardness (> 3 mmol/l - sum of the calcium and magnesium con-centrations, calculated as calcium carbonate.

Using filling water and top-up water which does not meet the stated quality requirements can cause a considerably reduced service life of the equipment. The responsibility for this is entirely that of the operator.

2.5.7 OperationThe ROTEX HPSU compact:

Do not operate until all installation and connection work iscompleted.Only operate with a completely full storage tank (Levelindicator) and heating circuit.Operate at a maximum pressure of 3 bar.Only connect with a pressure reducer on the external watersupply (Supply line).Only operate the with the specified quantity of refrigerant andthe type of refrigerant specified.only operate if the protective cover is installed.

The specified servicing intervals should be adhered to and in-spection work must be carried out.

2.5.8 Instructing the user/ownerBefore you hand over the ROTEX HPSU compact, explain tothe user/owner how to operate and check the system.Hand over the technical documentation (this document andall supporting documents) to the user and advise him thatthese documents must be made available at all times and bestored in the immediate vicinity of the unit.Make a record of the handover by filling out and signing theinstallation and instruction forms jointly with the user/owner.

3 x Product description


3 Product description

3.1 Design and components

3.1.1 Top of unit

1 Solar - inflow (1" ÜM) 2 Cold water flow (1" AG) 3 Hot water flow (1" AG) 4 Heating flow (1" AG)* 5 Heating return (1" AG)* 6 Circulation pump7 Safety-pressure relief valve (Heating circuit) 8 Automatic vent 17 Fill level indicator (Tank water)18 Connection electrical ROTEX backup heater (R 1½" IG) (Ac-

cessory)30 Plate heat exchanger (PWT)31 Connection refrigerant fluid line

ROTEX HPSU compact 304/308 (BIV): Cu Ø 6.4 mm (1/4"), ROTEX HPSU compact 516 (BIV): Cu Ø 9.5 mm (3/8")

32 Connection refrigerant gas line Cu Ø 15.9 mm (5/8")

34 Ball cock (Heating circuit)35 Combined filling and draining valve (Heating circuit)37 Storage tank temperature sensor tDHW1 and tDHW238 Connection diaphragm expansion vessel39 Controller housing with elect. terminal strip

3UVB 3-way diverter valve (temperature limiter)

3UV DHW 3-way switch valve (hot water/heating)

DS pressure sensorFLS (tR1, V1)

Return flow temperature and flow sensor tR2 return temperature sensortV1, tV2

Feed temperature sensors tV, BH

Flow temperature sensor Backup Function

Safety devicesObserve tightening torque!

* Ball cock (1" IG) is supplied with the equipment

Fig. 3-1 Design and components ROTEX HPSU compact(04/08/16) (Top of unit)


3 x Product description3.1.2 Outside of unit and internal structure ROTEX HPSU compact 304/308

Fig. 3-2 Structure and constituents ROTEX HPSU compact 304/308 (external view and internal structure) legend designations see tab. 3-1



3.1.3 Outside of unit and internal structure ROTEX HPSU compact 304/308 (BIV)

Fig. 3-3 Structure and constituents ROTEX HPSU compact 304/308 (BIV) (external view and internal structure) legend designations see tab. 3-1


3 x Product description3.1.4 Outside of unit and internal structure ROTEX HPSU compact 508/516

Fig. 3-4 Structure and constituents ROTEX HPSU compact 508/516 (external view and internal structure) legend designations see tab. 3-1



3.1.5 Outside of unit and internal structure ROTEX HPSU compact 508/516 (BIV)

Fig. 3-5 Structure and constituents ROTEX HPSU compact 508/516 (BIV) (external view and internal structure) legend designations see tab. 3-1



Tab. 3-1 Legend from fig. 3-2 to fig. 3-5

1 Solar - feed or connection additional heat source (1" ÜM)

2 Cold water flow (1" AG) 3 Hot water flow (1" AG) 4 Heating flow (1" AG)* 5 Heating return (1" AG)* 6 Circulation pump7a Recommended accessories:

Non-return valves (2 pcs) 9 Storage tank (double-walled polypropyl-

ene shell with PUR rigid foam heat insula-tion)

10 Filling and drain connection or solar return connection

11 Mount for solar R3 controller or handle12 Heat exchanger (Stainless steel) for drink-

ing water heating13 Heat exchanger (Stainless steel) for stor-

age tank charging or heating support (1

14 Heat exchanger (Stainless steel) for pres-surised solar storage tank charging

15 Connection for optional electrical Backup Heater (R 1½" IG)

16 Solar inflow layering pipe17 Fill level indicator (storage tank)18 Optional: electrical backup heater19 Submersible sensor sleeve for storage

tank temperature sensor tDHW1 and tDHW220 Unpressurised storage tank water

21 Solar zone22 Hot water zone23 Safety overflow connection24 Carrying loop25 Type plate26 Protective cover27 Solar - Return28 Solar - Feed flow (only ROTEX HPSU

compact BIV type)29 Solar - Return (only ROTEX HPSU

compact BIV type)30 Panel heat exchanger31 Connection refrigerant fluid line

ROTEX HPSU compact 304/308 (BIV): Cu Ø 6.4 mm (1/4"), ROTEX HPSU compact 516 (BIV): Cu Ø 9.5 mm (3/8")

32 Connection refrigerant gas line Cu Ø 15.9 mm (5/8")

3UVB 3-way diverter valve (temperature limiter)

3UV DHW 3-way switch valve (hot water/heating)

DS pressure sensorFLS (tR1, V1)

Return flow temperature and flow sensor

tR2 return temperature sensortV1, tV2

Feed temperature sensors tV, BH

Flow temperature sensor Backup Function

tDHW1, tDHW2Storage tank temperature sensor

AG Male threadIG Female threadÜM Union nutRoCon B1

Operating section ROTEX HPSU compact control unit

RPS3Optional: ROTEX R3 solar control and pump unit

Safety devicesObserve tightening torque!

* Ball cock (1" IG) is supplied with the equip-ment

(1 Shown on type 508

4 x Set-up and installation


4 Set-up and installation

4.1 Dimensions and connections

4.1.1 ROTEX HPSU compact 304/308 (BIV)

WARNING

Cooling systems (Heating pumps), climate control systems and heating devices that have been set up and installed incor-rectly can both endanger life and health of people and be impaired in their function.

Work on the ROTEX HPSU compact (such as setup, servicing, connection and initial start-up) is only to be carried outby persons who are authorised and who have successfully completed qualifying technical or vocational training andwho have taken part in advanced training sessions recognised by the relevant responsible authorities. These include inparticular certified heating engineers, qualified electricians and HVAC specialists, who because of their profes-sional training and expert knowledge, have experience in the professional installation and maintenance of heating,cooling and air conditioning systems and heat pumps.

1 Solar - Feed2 Cold water3 Hot water4 Heating Feed5 Heating Return6 Connection refrigerant gas line

7 Connection refrigerant fluid line8 Solar - Feed flow (only ROTEX HPSU compact (BIV) type)9 Solar - Return (only ROTEX HPSU compact (BIV) type)

A FrontB Back

Fig. 4-1 ROTEX HPSU compact 304/308 (BIV) connections and dimensions (general)


4 x Set-up and installation4.1.2 ROTEX HPSU compact 508/516 (BIV)

4.1.3 Scope of delivery– ROTEX HPSU compact– Bag of accessories (see fig. 4-3)

1 Solar - Feed2 Cold water3 Hot water4 Heating Feed5 Heating Return6 Connection refrigerant gas line

7 Connection refrigerant fluid line8 Solar - Feed flow (only ROTEX HPSU compact (BIV) type)9 Solar - Return (only ROTEX HPSU compact (BIV) type)

A FrontB Back

Fig. 4-2 ROTEX HPSU compact 508/516 connections and dimensions (general)

A Handles (only required for transport)

B Cover screenC Connection piece for safety

overflow

D Clamping pieceE Fitting spanner

Fig. 4-3 Content of bag of accessories



4.2 Set-up

Remove packing and dispose of it in an environment-friendlymanner.Unscrew the threaded inserts (fig. 4-4, item G), onto whichthe handles are to be fitted, from the hot water storage tank.

Install the ROTEX HPSU compact at the installation site.– Recommended clearances (fig. 4-5):

From the wall (s1): 200 mm.From the ceiling (X): 1200 mm.

– Transport the ROTEX HPSU compact carefully, use sup-porting straps.

– When setting up the unit in a cabinet, behind panels or inother restricted conditions, sufficient ventilation (e.g.,using ventilation gratings) must be ensured.

If necessary, install the optional backup heater (BU9c) in theROTEX HPSU compact (fig. 4-5).A separate manual, including, among other things, i instruc-tions for installation and operation is attached to this compo-nent ( Pay attention to the tightening torque, seechapter 10.3 "Tightening torque").

CAUTION!

Only erect the ROTEX HPSU compact when asufficient ground load-bearing capacity, of1050 kg/m² plus safety margin, has been assured. The ground must be flat and level.Outdoor installation is not permitted.The electronic control system must not besubjected to atmospheric factors under anycircumstances.The storage tank must not be exposed tocontinuous direct solar radiation, since the UVradiation and weather-influences will damage theplastic.The ROTEX HPSU compact must be installed in amanner protected from frost.Make sure that the supply company does notprovide corrosive domestic water.– Suitable water treatment may be required.

WARNING!

The plastic wall of the storage tank on the ROTEX HPSU compact may melt due to the effects of external heat (> 80 °C) and, in the extreme case, can catch fire.

Erect the ROTEX HPSU compact only at aminimum distance of 1 m to other heat sources(> 80 °C) (e.g. electric heater, gas heater, chimney) and flammable materials.

CAUTION!

If the ROTEX HPSU compact is not erected with suf-ficient distance beneath the solar flat collectors (top edge of storage tank is higher than the lower edge of the solar panel), the unpressurised solar system in the outdoor area will be unable to drain completely.

Erect the ROTEX HPSU compact with a solarconnection at a sufficient depth to the flat solarpanels (observe the minimum gradient in the solarconnecting lines).

Fig. 4-4 Mounting the handles


4 x Set-up and installation4.3 Hydraulic connection

Requirement: Optional accessories (e.g. Solar, Backup Heater) mounted on the ROTEX HPSU compact according to the specifi-cations of the instructions included.

Establish hydraulic connections at the ROTEX HPSUcompact.– For the position and dimension of the connections, see

section 4.1.– Pay attention to the tightening torque (see

chapter 10.3 "Tightening torque")Carefully lag the hot water pipes to prevent heat loss.– The thermal insulation needs to be at least 20 mm thick to

prevent condensation from forming on the surface of theinsulation material.

Connect the pressure relief line to the safety pressure reliefvalve and the membrane expansion tank as per EN 12828.Check the cold water connection pressure (maximum 6 bar).

At higher pressure in the drinking water line, a pressurereducer must be installed.

Connect the drain hose to the connection piece for the safetyoverflow (fig. 3-2 to fig. 3-5, item 23).– Use transparent drain hose (draining water must be visi-

ble).– Connect the drain hose to an adequately dimensioned

waste water installation.– Drain should not be lockable.

Fig. 4-5 Installation (shown on ROTEX HPSU compact 508/516 with the fitting of optional backup heater)

CAUTION:

If the ROTEX HPSU compact is connected to a heating system with steel pipes, radiators or non-dif-fusion-proof floor heating pipes, slurry and swarf could enter the hot water storage tank and cause blockages, local overheating or corrosion.

Make sure the volume is at least 10 l up to theheating circuit manifold. This results, for example, from a total line length VA Ø 32 of 24 m or Cu Ø 28 of 20.4 m.Flush the feed pipes before filling the heatexchanger.Rinse out the heat distribution network (in theexisting heating system).Install the dirt filter or sludge separator into theheating return flow (see chapter 2.5.5).

ONLY ROTEX HPSU COMPACT - BIV

CAUTION:

If the heat exchanger for charging the pressurised solar system (fig. 4-1 / fig. 4-2, item 8+9) has an ex-ternal heating unit (e.g. wood-burning boiler) con-nected to it, an excessive flow temperature at these connections can damage or destroy the ROTEX HPSU compact.

The feed flow temperature of the external heatershould be limited to max. 95 °C.



4.4 Electrical connection

Fig. 4-6 Installation of drain hose at safety overflow

WARNING!

Touching live parts can result in an electric shock and lead to potentially fatal injuries and burns.

Before beginning work on live parts, disconnectthem from the power supply (switch off fuse,main switch) and secure against unintentionalrestart.The electrical connection and working on theelectrical components should only be performedby electrical engineers in compliance with validstandards and guidelines as well as the specifica-tions of the energy supply company.The equipment covers and maintenanceopening covers must be re-fitted immediatelyafter completion of the work.

CAUTION:

Increased temperatures may arise in the control housing of ROTEX HPSU compact during operation. This can result in currently-carrying wires from reaching higher temperatures during operation due to self-heating. For this reason, these lines must have a temperature for continuous use of 90 °C.

For the following connections, use only cables witha long-term use temperature 90 °C:– Exterior heat pump unit– Backup-Heater (optional)


4 x Set-up and installation4.4.1 Overall connection plan ROTEX HPSU compact

Fig. 4-7 Overall connection diagram - For disconnecting the exterior unit by EVU (ROTEX HPSU compact interior unit is not disconnected).



4.4.2 Position of the circuit boards

4.4.3 Terminal assignment RTX AL4 circuit board

4.4.4 Terminal assignment RTX EHS circuit board

1 Control housing2 Control panel3 Control unit for the controlA1P Circuit boardRTX AL4

Circuit board

RTX EHSCircuit board

RoCon BM1Circuit board

Fig. 4-8 Overview circuit boards (Internal housing)

Fig. 4-9 RTX AL4 Circuit board

Fig. 4-10 RTX EHS circuit board

K1

K2

K3


4 x Set-up and installation4.4.5 Connection assignment, circuit board A1PThe A1P circuit board comes pre-connected to the unit. No as-sembly or connection work is necessary on the A1P Circuit board!

Fig. 4-11 Circuit board A1P



4.4.6 Connection assignment, Circuit board RoCon BM1

4.4.7 Mains connection ROTEX HPSU compactA flexible cable for the mains connection is already connected in-ternal to the device.

Check the supply voltage (~230 V, 50 Hz).Disconnect the junction box of the domestic installation.Connect the cable for the mains connection on the ROTEXHPSU compact to the junction box of the domestic installation via an all-pole disconnecting main switch to be installed bythe customer (separate isolator according to EN 60335-1).Ensure that the polarity is correct.

The external device and optional accessories must be connected separately to the regulator on the ROTEX HPSU compact. To do so, the protective cover on the ROTEX HPSU compact must be removed. The regulator may need to be opened (see section 4.4.1).

4.4.8 Removing the protective cover

Fig. 4-12 Circuit board RoCon BM1 (1 Connection plan in this instruction manual Mains supply 230 V, 50 Hz

Fig. 4-13 Unscrew the bolt and unlock the rear protec-tive cover.

Fig. 4-14 Remove the protective cover upwards and to-wards the front.



4.4.9 Connection of RRLQ exterior heat pump unit

Dismount the protective cover (see section 4.4.8).Connect the exterior heat pump unit to the terminal stripXAG1 (see fig. 4-21, fig. 4-23).

4.4.10 Connection of external temperature sensor RoCon OT1

The exterior heat pump unit of the ROTEX HPSU compact has a built-in exterior temperature sensor which is used to regulate the inflow temperature depending on the weather, with frost pro-tection function.

Instead of the exterior temperature sensor built into the exterior heat pump unit, the optional exterior temperature sensor RoCon OT1 can also be used to regulate the inflow temperature de-pending on the weather, with frost protection function.

Fig. 4-15 Dismount right housing cover.

Fig. 4-16 Unlock front panel.

Fig. 4-17 Open front panel and place in assembly posi-tion.

Fig. 4-18 Route cabling into the regulator and make the electrical connections.

Fig. 4-19 Lay cables in the right housing cover.

Fig. 4-20 Install the right housing cover.

1 Terminal strip XAG2 Terminal strip XBUH1

Fig. 4-21 Make the electrical connections to the rear of the housing (see section 4.4.1).

Fig. 4-22 Fasten cabling on the storage container.

This component has a separate manual attached, including among other things instructions for installation and operation.

Fig. 4-23 Connection to exterior heat pump unit - for disconnection of the outdoor unit by the EVU (the ROTEX HPSU compact interior unit is not disconnected)

If the ROTEX HPSU compact is used in a CAN bus sys-tem as a master ("Terminal function" for the remote control of other data bus devices), the exterior temper-ature sensor RoCon OT1 must be connected directly to the regulator RoCon HP on the master and not to the remote controlled device (mixer circuit module RoCon M1 or a different heat generator).



After connecting the exterior temperature sensor RoCon OT1 to the regulator RoCon HP of the ROTEX HPSU compact, the pa-rameter [Outside Config] must be set to "On".

4.4.11 Connecting the ROTEX solar installation By connecting the burner blocking contact of the ROTEX solar system to the ROTEX HPSU compact (fig. 4-25) and setting the appropriate parameters in its controller, the ROTEX HPSU compact can be controlled by the ROTEX solar installation in your operation mode. The current operating mode can be switched thanks to a changing resistance reading (tab. 4-1). The switching of the operating mode remains in effect only while the corresponding input value is wired up.

The operating mode has an effect on the direct circuit of the ROTEX HPSU compact as well as all other heating circuits op-tionally connected to this device.

The operating mode display on the RoCon HP controller of the ROTEX HPSU compact may vary from the operating mode display for the operating mode selection (parameter).

If special functions, such as "Manual Operation" are activated, the input is not evaluated.

Tab. 4-1 Resistance readings for evaluating the EXT signal

4.4.12 Connection to ROTEX Backup Heater

Connect the backup heater to the terminal strip RTXEHS(fig. 4-10) of the ROTEX HPSU compact.

Fig. 4-24 Connection of the exterior temperature sensor RoCon OT1 to ROTEX HPSU compact (Operating as a Single Solution/Mas-ter in a data bus)

Fig. 4-25 Connection BSK contact for optional solar installation

Operating mode Resistance ToleranceStandby < 680

± 5 %

heating 1200 Reducing 1800 Summer 2700

Automatic 1 4700 Automatic 2 8200

When the resistance readings are greater than the value for "Automatic 2", the input will be ignored.


A On-site cablingA1 BU9c connection variants 3-phaseA2 BU9c connection variants 1-phase (observe country-specific con-

nection conditions - request from responsible power company (EVU))!

X minimum clearance contact (>3 mm)Y Switching contactorFig. 4-26 1-phase connection, backup heater



4.4.13 Connection of ROTEX room thermostat

4.4.14 Connection ROTEX room controller RoCon U1For the remote setting of operating modes and room target tem-peratures from a different room, a separate room controller RoCon U1 can be connected for each heating circuit.

4.4.15 Connection of ROTEX mixer module RoCon M1The ROTEX HPSU compact can be connected to the RoCon M1 mixer module which is controlled via the RoCon HP electronic controller.

The connection of the CAN data bus lines is identical to the fig. 4-30 to connection J13 of the ROTEX HPSU compact.

Fig. 4-27 3-phase connection, Backup Heater


Fig. 4-28 Connection with room thermostat cable-connected

Fig. 4-29 Connection with radio-controlled room thermostat

Fig. 4-30 Connection room control RoCon U1





4.4.16 Internet gateway ROTEX RoCon G1The controller can be connected to the internet via the optional RoCon G1 gateway. This means that the ROTEX HPSU compact can be controlled remotely via mobile phone (using an App).

4.4.17 connection ROTEX HP convector– Original ROTEX connecting cable (HPc-VK)– Control of 2-way valve*.– DIP switch setting SS2-3 on circuit board A1P = AUS

(see also tab. 8-3, page 46).

4.4.18 Connection of switching contact (AUX output)

4.4.19 Low-cost connector (HT/NT)If the outdoor unit is connected to a reduced tariff mains con-nection, the voltage-free contact of the receiver, which eval-uates the low tariff input signal emitted by the electricity supply company, must be connected to the plug J8, contact EVU + GND on the RoCon BM1 circuit board (see fig. 4-33).

a) In the moment when the power company sends the low-costsignal, the Parameter [HT/NT Function] > 0 and theParameter [HT/NT Contact] = 0, the contact is opened andthe system switches to "Forced OFF". If the signal is sentagain, the potential-free contact is closed and the machineresumes operations.

b) In the moment when the power company sends the low-costsignal, the Parameter [HT/NT Function] > 0 and the Param-eter [HT/NT Contact] = 1, the contact is opened and the sys-tem switches to "Forced OFF". If the signal is re-opened, thepotential-free contact re-opens and the machine resumesoperations.– Type 1: For this type of low-tariff mains connection, the

power supply is not disconnected.– Type 2: For this type of low-cost mains connection, the

power supply is connected after a certain period of time.



Mode (Heating/Cooling) can only be switched on the ROTEX HPSU compact.

Fig. 4-31 Connecting the ROTEX HP convector to the ROTEX HPSU compact

Fig. 4-32 Connection switching contact (AUX output)

1 Mains connection boxes for low-cost mains connection2 Recipient for evaluation of the HT/NT control signal3 Mains connection of exterior unit (see installation manual for the

exterior unit)4 De-energised contact for interior unitFig. 4-33 Connection HT/NT Contact

[HT/NT Function] > 0[HT/NT Function] = 0


4 x Set-up and installation4.4.20 Connection intelligent controller (Smart Grid - SG)As soon as the function is activated by the parameter [SMART GRID] = 1, the heat pump is moved to the standby, normal or ex-tended operating mode, depending on the signal provided by the energy supply company.

The the potential-free contact of the intelligent controller must be connected to the connector J8, contact Smart Grid + GND, to the contact EVU + GND on the circuit board RoCon BM1 (see fig. 4-34, fig. 4-12).

As soon as the Smart Grid function is active, the HT/NT function is deactivated automatically. Depending on the value of the pa-rameter [Mode SG], the heating pump is operated differently.

4.4.21 Symbols and legend keys on connection and circuit diagrams

Fig. 4-34 Connection Smart Grid

Explanation ExplanationSymbols

Safety earthing External cabling (number of individual cores and the mains voltage are partially quoted.)

Low external voltage earthing Pushbutton

Connection terminal DIP switch

Plug connection Optional component

Terminal rail Plug and socket connection

2-core cabling (non-screened) 3-core cabling (non-screened)

4-core cabling (non-screened) 5-core cabling (non-screened)

6-core cabling (non-screened) Shielded cabling (for example 3-strand)

Tab. 4-2 Symbol explanations for connection and circuit diagrams



Key namesShort

designationExplanation Short

designationExplanation

3UVB1 3-Way Switch valve (temperature limiter) M1 Mixer module3UV DHW 3-Way Switch valve (hot water/heating) PK Circulation pump (internal)A1P Connection board PZ Circulation pumpAUX Switching contact PWM Pump connection (PWM-signal)BSK Burner block contact (solar) RPS3 Control and pump unitBU9c Backup Heater RoCon B1 Control unit for the controllerDS Pressure sensor RoCon BM1 Circuit boardEXT External changeover of operating mode RoCon U1 Room temperature controller F1 Fuse 250 V T 2A RT Room thermostat (RKRTR/RKRTW)FLS FlowSensor RTX AL4 Circuit boardHT/NT Off-peak mains connection RTX EHS Circuit boardJ1 Plug connection circulation pump P RRLQ External unit for heat pumpJ2 Plug connection 3UV DHW tAU External temperature sensor (RoCon OT1)J3 Plug connection AUX contact tDHW1 Tank temperature sensor 1J4 Not assigned tDHW2 Tank temperature sensor 2J5 Plug connection pressure sensor tR1 Return line temperature sensor 1 (FLS)J6 Plug connection mains voltage tR2 Return line temperature sensor 2J7 Plug connection PWM tV1 Flow temperature sensor 1

J8

Plug connection HT/NT contact EVU tV2 Flow temperature sensor 2Plug connection SmartGrid contact EVU tV, BH Flow temperature sensor backup heaterPlug connection RPS3 V1 Flow sensor (FLS)Plug connection storage temperature sensor tDHW1 + tDHW2

XBUH1 Plug connection backup heater (BU9c)

Plug connection exterior temperature sensor tAU

X2A Plug connection to J1 from RTX AL4

Plug connection BSK X2M6 Connecting cable clamp HPc-VKJ9 Plug connection FLS (tR1+ V1) X2M7 Connecting cable clamp HPc-VKJ10 Plug connection internal cabling X4A Plug connection to J4 from RTX AL4J11 Plug connection internal cabling X5A Plug connection flow temperature sensor tV2

J12 Plug connection 3UVB1 X6A Plug connection flow temperature sensor tV, BUH

J13 Plug connection room temperature controller (RoCon U1) X7A Plug connection temperature sensor

(fluid-side refrigerant) tL2

J14 Plug connection circulation pump X8A Plug connection return line temperature sensor tR2

J15 Plug connection internal cabling X9A Plug connection tank temperature sensor tDHW2

J16 Plug connection room thermostat (RKRTR / RKRTW) X18A Plug connection to J4 from RTX AL4

K1 Backup Heater Relay (BU9c) 1 X19A Plug connection to XAG + J10K2 Backup Heater Relay (BU9c) 2 X11M Terminal strip HP convectorK3 Backup Heater Relay (BU9c) 3 X2_1 Plug connection to XBUH1

K7 Relay STB monitoring backup heater in booster function X2_2 Plug connection to XBUH1

K8 Relay 1 Room thermostat (Reversal) X2_3 Plug connection to XBUH1K9 Relay 2 Room thermostat (Control) XAG Plug connection exterior heat pump unit

Tab. 4-3 Key names for connection and circuit diagrams


4 x Set-up and installation4.5 Laying refrigerant lines

Check whether oil trap arc necessary.– Required when ROTEX HPSU compact not installed on

same level as external unit.– An oil trap arc must be installed every 10 m difference in

height(fig. 4-35, H = Clearance from oil trap arc to oil trap arc).

– Oil trap arc only required in gas line.Install lines with bending unit and an adequate clearance toelectrical lines.Only solder with light nitrogen flow (hard soldering only).Do not apply insulation to joins until after start-up (forpurposes of leakage search).Establish flange connections and connect to the units.( Pay attention to the tightening torque, see chapter 10.3"Tightening torque").

4.6 Pressure test and vacuumPerform pressure test with nitrogen.– Use nitrogen 4.0 or higher.– Maximum 40 bar.After leak search is complete, completely drain.Vacuum lines.– Pressure to be reached 1 mbar absolute.– Time: minimum 1 hCheck whether additional refrigerant is needed for primerfilling, fill where necessary.Open stop valve on exterior unit completely until the stop.Tighten loosely.Reassemble valve caps.Check whether the storage temperature probes are insertedto a depth of t DHW1 and t DHW2 80 cm.

4.7 Filling and topping up the heating systemSee chapter 7.4.

4.8 Filling and topping up the storage tankSee chapter 7.5.

A Exterior heat pump unit (RRLQ)B ROTEX HPSU compactC Gas lineD Liquid lineE Oil trap arcH Height to the 1st oil trap (10 m)Fig. 4-35 Oil trap arc refrigerant line

5 x Start-up


5 Start-up

5.1 Initial start-upAfter the ROTEX HPSU compact was installed and connected completely, it will need to be undergo a one-time adaptation to the installation environment to be carried out by technical per-sonnel (configuration).

After this configuration is complete, the installation is ready for operation and the operator can make additional custom configu-rations on it.

The heating specialist must instruct the operator [on using the machine], must prepare the commissioning report, and fill out the operating manual.

The setting of the optional components such as room thermostat or the ROTEX solar installation is done on the respective compo-nents themselves.

5.1.1 Requirements– The ROTEX HPSU compact is fully connected.– The refrigerant system is dehumidified and filled with the

specified amount of refrigerant.– The heating system and storage tank container are filled.– Optional accessories have been mounted on and connected

up.– The control valves of the heating system are open.

5.1.2 Setting the controller parametersTurn power supply to ROTEX HPSU compact on.

After the start phase, the operating language selector isdisplayed.

Use the rotary switch to select the desired language.

Confirm the changes with a brief push of the rotary switch.The ROTEX HPSU compact Basic Configuration isloaded.The message "Starting Up" is displayed.The message "Initialization" is displayed.The standard display for the current rotary switch settingis displayed.

Set the controller on the ROTEX HPSU compact according to the installation demands.– Switch off the legionellic system (if not required).– For configuration and explanations of the system

parameters, see operating instructions "ROTEX con-troller RoCon HP".

Enter the configuration values into the corresponding table inthe "Notes" chapter of the operating manual.

WARNING!

A ROTEX HPSU compact that is installed or started in-correctly may not operate properly and is dangerous for the health and safety of individuals.

The ROTEX HPSU compact may only be startedup by authorised and trained heating experts.

CAUTION!

A ROTEX HPSU compact not put into operation properly can lead to damage to property and the envi-ronment.

Observe the relevant regulations of technology toprevent creation of corrosion products anddeposits.Measures for desalination, softening or hardnessstabilization are necessary, if the filling and top-upwater have a high total hardness (>3 mmol/l - sumof the calcium and magnesium concentrations,calculated as calcium carbonate.During system operation, the water pressure at the pressure gauge must be checked at regularintervals. If necessary, readjust by refilling

The operating language can be changed again at any time.


5 x Start-upSet the commissioning parametersTo set the commissioning parameters, the heating expert must be logged into the controller (as-delivered condition). If this is not the case, the technician Password will need to be entered as follows.

Technician Login

Set commissioning parameters according to the systemrequirements (see operating instructions "ROTEX RoCon HP controller").

5.1.3 Discharge the circulation pump and check the minimum flow

Turn the rotary switch to the operating mode "Heat".Set the set room temperature on the controller of the ROTEXHPSU compact to the maximum value until the system starts.Set the parameter [T-Outside lim day] in the level "HC Config-uration" to the maximum value.– For configuration and explanations of the system

parameters, see operating instructions "ROTEX con-troller RoCon HP".

Fig. 5-1 Entering the access code

Configuration

SetupSystem Configuration

Access Rights

User

Access Rights

Expert

Setup

LanguageDate

Setup

Keylock Function

Access RightsOutdoor type

Access Rights Access Rights

Access Rights

Fig. 5-2 Setting the commissioning parameters

The safety settings of the ROTEX HPSU compact hinder the operation of the heat pump if– the outdoor temperature is < 12 °C and simultane-

ously– the storage tank temperature is < 30 °C.Without Backup Heater:The storage tank water must be heated to > 30 °C by an external heater.

With Backup Heater (BU9c): At an outdoor temperature < 12 °C and a storage tem-perature < 35 °C, the Backup Heater (BU9c) switches on automatically to heat the water in the storage tank to > 30 °C.

In order to accelerate the heating up process withthe BU9c, temporarily set the– Set parameter [Function Heating Rod] = "1"

and– Parameter [Power DHW] to 9000 W.– Set the rotary switch to operating mode

and the parameter [1x Hot Water] to "On"; oncethe heating process is complete, return theparameter to "Off".

Configuration

SetupSystem Configuration

System Configuration

Power DHWBUH s1 power

Setup

LanguageDate

5 x Start-up


Ventilate circulation pump as follows:– Open ventilation screw on circulation pump.– Allow pump wheel to run until water emerges from the

ventilation screw without bubbles.– Close ventilation screw on the circulation pump again.Check the minimum flow while the heating circuit is closed:– Minimum flow ROTEX HPSU compact 4-8 kW: >720 l/h– Minimum flow ROTEX HPSU compact 11-16 kW:

>900 l/h

5.1.4 Configuring the screed function parameters (only if needed)

With the screed function, the flow temperature is controlled ac-cording to a flow program with special parameters.

For more information about the screed function, how it is acti-vated and its operating sequence, see operating instructions "ROTEX RoCon HP controller".

The following rework is still necessary after the screed function has run, based on the connection variant.

a) Connection without a room thermostat:Set the desired flow temperature or activate weather-dependent set value regulation.

b) When connecting with room thermostat:Activate room thermostat.Set the desired flow temperature or activate weather-dependent set value regulation.

5.2 Re-commissioning

5.2.1 Requirements

– The ROTEX HPSU compact is fully connected.– The heating and hot water systems are filled and charged at

the right pressure (see chapter 7.4).– The storage tank is filled up to the overflow (see chapter 7.5).

5.2.2 Start-up

1. Check the cold water connection and, where necessary, fillthe potable water heat exchanger.

2. Set the dial on the controller to the required operating mode.

3. Turn power supply to ROTEX HPSU compact on.

4. Wait for the start phase.

5. After the start phase has completed, in heating mode,evacuate the heating system, check the installation pressureand adjust where necessary (max. 3 bar).

6. Carry out a visual inspection for leaks on all joints internally.Seal any leaks that occur in a professional manner.

7. If a ROTEX solar system is connected, commission thisin accordance with instructions provided. After connecting the ROTEX solar system, make a further check on the levelin the buffer storage tank.

CAUTION!

If the minimum flow is too low, an error message may appear and the heating system may shut down.

If the minimum flow is insufficient:If there is insufficient pumping capacity, a hydraulic barrier must be installed with an additional circu-lation pump (by the customer)

CAUTION!

Setting up in frosty conditions can result in damage to the entire heating system.

Only set up at temperatures below 0 °C when awater temperature of at least 5 °C can beguaranteed in the hydraulic system and storagetank.

ROTEX recommends not operating the installation in extremely frosty conditions.


ously– the storage tank temperature is < 30 °C.Without Backup Heater:With an outdoor temperature < 12 °C, the storage tank water needs to be heated up by an external heater to > 30 °C.


In order to accelerate the heating up process withthe BU9c, temporarily set the– Set parameter [Function Heating Rod] = "1"

and– Parameter [Power DHW] to 9000 W.– Set the rotary switch to operating mode



6 x Decommissioning6 Decommissioning

6.1 Temporary shutdown

If the ROTEX HPSU compact is not needed for a long time, it can be temporarily decommissioned.

However, ROTEX advises against disconnecting the system from the power supply, and recommends instead that you only set the rotary switch on the RoCon HP controller to "Standby".

The system is then protected from frost. The pumps and valve protection functions are active.

If it is not possible to guarantee the power supply when there is danger of frost,– completely discharge the ROTEX HPSU compact on the

water side, or– suitable anti-frost measures are taken.

6.1.1 Draining the storage tankDisconnect the ROTEX HPSU compact from the powersupply.Connect the drain hose to the KFE-Befüllanschluss(fig. 6-1, item A) and to a waste water drainage point which isat least at ground level.

Tab. 6-1 Legend from fig. 6-1 to fig. 6-6

Without Solar installation

Insert the KFE-Befüllanschluss into the threaded piece(fig. 6-3, item E) and secure it using a clamping piece(fig. 6-3, item D).Place a suitable collection trough under the filling andemptying fitting.Immediately after unscrewing the threaded piece (fig. 6-4,item E) on the filling and emptying fitting and removing thesealing plug (fig. 6-4, item F), screw in the pre-assembledthreaded insert with the KFE-Befüllanschluss into the fillingand emptying fitting (fig. 6-4).

WARNING!

Danger of scalding and flooding when opening the solar return flow coupling or heating and hot water pipes due to escaping hot water.

Only drain the storage tank container or heatingsystem– when they have been left to cool sufficiently,– with a suitable device for the safe draining or

catching of escaping water,– wearing appropriate protective clothing.

CAUTION!

A heating system which is shut down can freeze in the event of frost and may suffer damage.

If there is any risk of frost, empty any water fromthe decommissioned heating system.If the heating system is not drained and there is the risk of frost, the power supplies must be securedand the external main switch must remain switched on.

If there is a danger of frost and the power supply cannot be guaranteed for just a few days, the unit's excellent heat insulation means that the ROTEX HPSU compact does not have to be drained, provided that the storage tank temperature is monitored regularly and does not fall below +3 °C.

However, there is no frost protection for the connected heat distribution system through this.

If no KFE-Befüllanschluss is available, the con-nection piece (fig. 6-1, item C) can be removed from the safety overflow (fig. 6-1, item B) and used.

Once the draining process is complete, this must be replaced before the heating system can be started again.

Fig. 6-1 Connecting the drain hose

Optional: Removing the connec-tion piece from the safety overflow

A KFE-Befüllanschluss B Safety overflowC Connection piece for safety

overflowD Clamping piece

E Threaded pieceF Sealing plugG Connecting angleX Valve insert

Remove the covering blind from the filling andemptying fitting.When using the KFE-Befüllanschluss:Remove the covering blind from the handle andunscrew the threadedpiece (fig. 6-2, item E)from the storage tank con-tainer.

Fig. 6-2 Unscrewing the thread-ed piece

CAUTION!

Storage water will gush out as soon as the sealing plug is removed.

6 x Decommissioning


Open the KFE cock of the KFE-Befüllanschluss anddrain the water content of the storage tank.

Only for the Solar installationAdjust the valve insert on the connecting angle so that theblind plug is cut off (fig. 6-5).Remove the blanking plug from the connecting angle(fig. 6-5) and place a suitable collection trough under the unit.

Open the KFE cock on the KFE-Befüllanschluss.Adjust the valve insert on the connecting angle so that theflow to the drain hose is opened (also refer to fig. 6-5) anddrain the water content of the storage tank.

6.1.2 Draining the heating circuit and hot water circuit

Connect the drain hose to the combined filling and drainingvalve on the ROTEX HPSU compact.Open the combined filling and draining valve on the ROTEXHPSU compact.Allow the heating and warm water circuit to run empty.Disconnect the heating flow and return flow as well as the cold water inflow and the hot water outflow from the ROTEX HPSU compact.Connect the discharge hose on the heating flow and returnflow as well as the cold water inflow and hot water outflow sothat the hose opening is at ground level.Allow the individual heat exchangers to run empty one afterthe other based on the suction lifter method.

Fig. 6-3 KFE-Befüllanschluss Assembling the

Fig. 6-4 KFE-Befüllanschluss Screwing the into the fill-ing and emptying fitting

Fig. 6-5 Shutting off the valve insert and removing the blanking plug from the connecting angle

Insert the KFE-Befüllan-schluss into theconnecting angle andsecure using a retainingclamp (fig. 6-6).

Fig. 6-6 KFE-Befüllanschluss Assembling the in the connecting angle

X1

X3

X2

X44

3

2

1

2.

1.

G

3.

4.


6 x Decommissioning6.2 Final shutdown

A final shutdown may be necessary if– the system is defective and is being dismantled and disposed

of.– components of the system are defective, are being disman-

tled and replaced.– the system or parts of the system are being dismantled and

reassembled in another location.

The ROTEX HPSU compact is designed to be environmentally friendly and easy to install: the jobs described above can therefore be carried out in an efficient and environmentally-friendly manner.

When changing locations or replacing parts on the coolant system in the pipe network:

Pump the coolant back into the external heat pump unit(see installation and operating guide for the particularexternal heat pump unit).

When disposing of the machine or replacing parts in the coolant system:

Vacuum coolant from the machine and recycle (see instal-lation and operating guide for the particular external heatpump unit).

Decommissioning a ROTEX HPSU compact (see section6.1).Disconnect the ROTEX HPSU compact from all electricalconnections, refrigerant and water connections.Dismantle the ROTEX HPSU compact or components inaccordance with the installation guide in reverse order.ROTEX HPSU compact disposed off in a professionalmanner.

Recommendations for disposalThe ROTEX HPSU compact has an environmentally friendly design. During the disposal process, the only waste created is that which can be used for material or thermal recycling. The ma-terials used that are suitable for recycling can be sorted into indi-vidual types.

WARNING!

Cooling systems (Heating pumps), climate control systems and heating devices that are incorrectly dis-mantled can both endanger life and health of people and be impaired in their function during start-up.

Work on the ROTEX HPSU compact (such asdismantling components, temporary or finalshutdown of system) is only to be carried out bypersons who are authorised and who havesuccessfully completed qualifying technical orvocational training and who have taken part inadvanced training sessions recognised by therelevant responsible authorities. These include inparticular certified heating engineers, qualifiedelectricians and HVAC specialists, whobecause of their professional training and expertknowledge, have experience in the professionalinstallation and maintenance of heating, coolingand air conditioning systems and heat pumps.You must observe the warning and safetyinstructions in the installation manual on workingin the coolant system.

CAUTION!

Coolant escaping from the system causes long-term damage to the environment. Mixing different kinds of refrigerant can result in hazardous toxic gases being released. Mixing with oils when refrigerant escapes can lead to the soil being contaminated.

Only siphon out refrigerant into a recycling devicesuitable for this purpose.Always recycle refrigerant thus keeping itseparated from oils and other additives.Only keep each type of refrigerant separate insuitable pressure vessels.Dispose of refrigerants, oils and additives profes-sionally and in accordance with the applicablenational regulations of the country it is being usedin.

ROTEX has complied with the standards for environ-mentally-friendly disposal as a result of the environ-mentally-friendly design of the ROTEX HPSU compact. Proper disposal in compliance with the respective national regulations of the country of use is the respon-sibility of the user/owner.

The designation of the product means that electrical and electronic products may not be disposed of together with unsorted domestic waste.

Proper disposal in compliance with the respective national regulations of the country of use is the respon-sibility of the user/owner.

– Disassembly of the system, handling of coolant, oil and other parts may only be carried out by aqualified fitter.

– Disposal may only be carried out by a facilitythat specialises in reuse, recycling and recov-ery.

Further information is available from the installation company or the responsible local authorities.

7 x Service and maintenance


7 Service and maintenance

7.1 GeneralRegular inspection and maintenance of the ROTEX HPSU compact reduces energy consumption and ensures a long life and smooth operation.

Legal requirementsAccording to the F-gases directive (EC) No. 842/2006 item 3, op-erators (or owners) must regularly service their stationary cooling systems on a regular basis, check for leaks and remedy any leaks found as quickly as possible.

All maintenance and repair work on the refrigeration circuit must be documented in the operating manual. This obligation results from the directive published on June 14.th 2006 in the EU official gazette concerning greenhouse gases.

Operators of ROTEX heat pump systems are subject to the fol-lowing obligations:

With a total filling quantity of the system with refrigerant of3 kg – 30 kg or from 6 kg upwards in hermetic systems:

Checks by certified personnel at intervals no longer than12 months.

Compulsory documentation (maintenance and leak test) inthe operating manual, stating type and amount of filled-in or recovered refrigerant and the applied test method (in accordance with EC No. 1516/2007). Operator must keep documentation for at least five years after compiling it and show it to the responsible authority upon request.Responsibility of the operator of systems for recoveringF-gases by certified personnel.

7.2 Removing the protective cover

7.3 Activities to be performed annually

Have the inspection and maintenance carried out by authorised and trained HVAC engineers once a year, ideally before the heating period. This can prevent faults during the heating period.

ROTEX recommends an inspection and maintenance contract to ensure regular inspection and maintenance.

If the total filling quantity of the system with refrigerant is less than 3 kg, there is no European legal require-ment for testing intervals. ROTEX however, would rec-ommend entering into a maintenance contract and recording the work carried out in the operating manual in order to preserve guarantee claims.

Certified people are those who have proof of expertise for the European Community for work on stationary refrigeration systems (heat pumps) and air conditioning systems, according to the F-Gases Directive (EC) No. 842/2006.

– Up to 3 kg coolant fill quantity: expert certificatecategory 2

– 3 kg coolant fill quantity or over: expert certifi-cate category 1

Fig. 7-1 Unscrew the bolt and unlock the rear protec-tive cover.

Fig. 7-2 Remove the protective cover upwards and to-wards the front.

WARNING!

Improperly carried out work on the ROTEX HPSU compact and its components that have been con-nected as an option can endanger human life and health and adversely affect the operation of the these components.

Work on the ROTEX HPSU compact (such asmaintenance or servicing) is only to be carried outby persons who are authorised and who havesuccessfully completed qualifying technical orvocational training and who have taken part inadvanced training sessions recognised by theappropriate responsible authorities. These include in particular certified heating engineers,qualified electricians and HVAC specialists,who because of their professional training andexpert knowledge, have experience in the profes-sional installation and maintenance of heating,cooling and air conditioning systems and heatpumps.

WARNING!

The gaseous refrigerant is heavier than air. In pits or in badly ventilated rooms it can collect in high con-centrations. Breathing in high concentrations of gaseous refrigerant leads to feelings of faintness and suffocation. Toxic gases can be formed if gas-eous refrigerants come into contact with open fire or hot objects.

When working on the refrigerant circuit, ensurethat the workplace is well ventilated.If necessary, before starting work, evacuate therefrigerant system completely.Never carry out work on the refrigerant circuit inclosed rooms or work pits.Do not let refrigerant come into contact with openfire, embers or hot objects.Never allow refrigerant to escape into the atmos-phere (forms high concentrations).After removing the service pipes from the fillingconnections, carry out a leakproof test on the refrigeration system. Refrigerant can escape through leaks.



Dismount the protective cover (see section 7.2).Carry out a functional inspection of the ROTEX HPSUcompact, as well as all installed accessory components(Backup Heater, solar installation) by checking the temper-ature display and the switching states in the individual modes.If a ROTEX solar system of the type Drain Back isconnected and in operation, switch it off and empty the solarpanels.

When operating the ROTEX HPSU compact in a bivalent-alternative system; switch off all heat generators anddeactivate the bivalent control unit.Visual check of general condition of the ROTEX HPSUcompact.Visual check of the water storage tank level (filling levelindicator)

Top up the water if necessary (see section 7.5), deter-mine the reason for the low water level and remedy it.

Check the connection of the safety overflow and drain hosefor leaks, free drainage and gradient.

If necessary, clean the safety overflow and drain hose andrelay it; replace damaged parts.

Visual check of connections, lines and safety pressure reliefvalve. In the event of damage, determine the cause.

Replace defective parts.Check all electrical components, connections, and cables.

Repair damaged parts or replace them.Check the water pressure of the cold water supply (< 6 bar)

and if necessary the fitting or adjustment of the pressurereducer.

Check the system water pressure on the RoCon HP controller of the ROTEX HPSU compact.

Top up the water in the heating system if necessary, untilthe pressure display is within the permitted range (see section 7.4).

Clean plastic surface of ROTEX HPSU compact with a softcloth and mild cleaning agent. Do not use cleaning agentscontaining aggressive solvents, as this will damage theplastic surface.Refit the cover (see section 7.2).Servicing of the external unit and other heating componentsconnected to the ROTEX HPSU compact should be carriedout as specified in the respective associated installation andoperation manuals.Complete the confirmation of servicing in the suppliedoperating manual of the ROTEX HPSU compact.

WARNING!

At normal atmospheric pressure and ambient temper-atures, liquid refrigerant vaporises so suddenly that on contact with skin or eyes it can cause the tissue to freeze (danger of going blind).

Always wear safety goggles and protective gloves.Never allow refrigerant to escape into the atmos-phere (high pressure at the point of the leak).When removing the service pipes from the fillingconnections, never hold the connections in thedirection of your body. Residual refrigerant couldescape.

WARNING!

Under the cover of the ROTEX HPSU compact tem-peratures of up to 90 °C can arise during operation. During operation, hot water temperatures > 60 °C arise.

– Touching components during or after operationleads to a risk of burns.

– Water discharged during maintenance and servic-ing work can cause scalding on contact with theskin.Before carrying out servicing and maintenancework, allow the ROTEX HPSU compact to cooldown sufficiently.Wear protective gloves.

WARNING!

Live parts can cause an electric shock on contact and cause fatal burns and injuries.

Before beginning work on live parts, disconnectthem from the power supply (switch off fuse,main switch) and secure against unintentionalrestart.Electrical connection and work on electricalcomponents must only be carried out by qualifiedelectricians in compliance with valid standardsand guidelines as well as the specifications of theenergy supply company.Covers off equipment and servicing flaps are tobe replaced as soon as the work is completed.

The ROTEX HPSU compact is designed to be low-maintenance. No corrosion protection equipment is re-quired (such as expendable anodes). This means there is no need for maintenance work such as changing the protective anodes or cleaning the inside of the storage tank.

– Check the filling level, if necessary replenish water.



7.4 Filling and topping up the heating system

1. Connect the filling hose (fig. 7-3, item 1) with backflushprevention (1/2") and an external pressure gauge (on-site) tothe KFE cock (fig. 7-3, item 2) and secure from slipping usinga hose clamp.

2. Only necessary for initial commissioning, and forrecommissioning after a complete emptying!Click the hand lever (fig. 7-3, item 5.3) on the 3-way switching valve (3UVB1 + 3UV DHW) into the middle position (onlypossible when de-energised).

3. Open the water cock (fig. 7-3, item 4) in the supply line.

4. Open KFE cock (fig. 7-3, item 2).

5. Fill the system with water until a system pressure between 2.5 and 3.0 bar is reached on the external pressure gauge(overpressure valve may not trigger).

6. Close KFE cock (fig. 7-3, item 2).

7. Switch on the power supply of the ROTEX HPSU compact.

8. Turn the rotary switch to the operating mode "Heat".ROTEX HPSU compact runs in the hot water heatingmode after the start phase.

9. During the hot water heating mode, continuously check thewater pressure at the external pressure gauge. Wherenecessary, refill with water via the KFE cock (fig. 7-3, item 2).

10. Bleed the entire heating network (open the regulation valve.At the same time the underfloor heating system can be filledand flushed with the underfloor heating distributor.).

11. Inspect the water pressure at the external pressure gaugeagain. Where necessary, refill with water via the KFE cock(fig. 7-3, item 2).

12. Close the water cock (fig. 7-3, item 4) in the supply line.

13. Remove the filler hose (fig. 7-3, item 1) with flow-backpreventer from the KFE cock (fig. 7-3, item 2).

14. Only necessary for initial commissioning, and forrecommissioning after a complete emptying!Start "Air Purge" function.DANGER!

Water can come out of the automatic bleeder (fig. 7-3, item 6) during filling, which can cause electrocution if it comes into contact with the power supply to the 3-way switching valve.

Do not carry out any work in the area around the3-way switching valves during the filling process.

WARNING!

Polluted domestic water is hazardous to health.

When filling the heating system prevent any back-flow of heating water into the drinking water piping.

The centre position is on stable, when the 3-way switch valve has not power. The 3-way-switch valve unlocks automatically, when the voltage at the drive motor for the valve position AB-A is applied (storage tank charging).

Air Purge

FA_RoCon_HP (008.1414744)

1 Filler hose2 KFE cock3 Ball cock4 Water cock5.1 Valve drive

5.2 Unlocking button of the drive lock

5.3 Hand lever6 Automatic bleeder3UVB1, 3UV DHW

3-way switch valveFig. 7-3 Filling the heating circuit


7 x Service and maintenance7.5 Filling and topping up the storage tank

Without installed solar systemConnect the filling hose with backflush prevention (1/2") tothe connection "DrainBack Solar - feed" (see fig. 7-4, item 1).Fill the storage tank on the ROTEX HPSU compact untilwater comes out of the connection (fig. 7-4, item 23), that has been connected as the safety overflow.Remove the filling hose with backflush prevention (1/2")again.

With KFE-Befüllanschluss or with installed solar installation (also see chapter 6.1)

Without solar system: Connect the KFE-Befüllanschluss tothe filling and drain connection of the ROTEX HPSU compact (fig. 3-2 to fig. 3-5, item 10) or With solar system: Connect the KFE-Befüllanschluss to the bracket of the control and pump unit (RPS3).Connect the filling hose with backflush prevention (1/2") tothe previously installed KFE cock.Fill the storage tank on the ROTEX HPSU compact untilwater comes out of the connection (fig. 7-4, item 23), that has been connected as the safety overflow.Remove the filling hose with backflush prevention (1/2")again.

UK only!

CAUTION!

If filling or topping up the storage tank is done by means of the boiler filling and drain valve, a temporary filling loop must be used with the appropriate backflow prevention device in accordance with clause G24.2, Guidance to the Water Supply (Water Fittings) Regulations 1999.


ously– the storage tank temperature is < 30 °C.

Without Backup Heater:With an outdoor temperature < 12 °C, the storage tank water needs to be heated up by an external heater to > 30 °C.


In order to accelerate the heating up process with the BU9c, temporarily set the– Parameter [Function Heating Rod] = "1" and– parameter [Power DHW] to 9000 W.– Set the rotary switch to operating mode


Fig. 7-4 Filling buffer storage tank - without Solar system

8 x Faults and malfunctions


8 Faults and malfunctions

8.1 TroubleshootingThe electronic Solar tank with integrated interior heat pump unit detects and stores faults. These are shown by an error message on the display:– Red backlighting (see also chapter 3.2.1)– Fault code (see tab. 8-2).

An integrated Protocol stores up to 15 fault messages that have occurred most recently.

Depending on the operating mode, the fault messages are also forwarded to connected room stations or room thermostats.

8.1.1 Current fault display

8.1.2 Reading the ProtocolThe Protocol can be read-out in the "Special Level" (see Fig 8-3).

The last received (latest) fault message is in the first position. All the other previous fault messages are then pushed backwards by one place when a new entry is made. The 16th fault message will be deleted every time a new fault message is received.

8.1.3 TroubleshootingDetecting and remedying the cause of the malfunction.

– Contactor triggered:Nothing shown on the display in the controller. Ascertaincause of triggering the contactor and remedy fault. Start upsystem again.

once the cause has been remedied, the system willresume operations as normal.

– Contactor not triggered:a) No fault codes are shown but the system is not working

properly. Troubleshooting and eliminating faults(see section 8.2).Once the cause has been eliminated, the system contin-ues to work normally.

b) Fault codes are displayed as long as the fault conditionsare present. Troubleshooting and eliminating faults(see section 8.3). The system must be isolated from thepower supply for at least 10 secs. to unlock it.Once the cause has been eliminated, the system contin-ues to work normally.

CAUTION!

Electrostatic charges can lead to voltage arcing that can destroy the electronic components.

Secure potential equalisation before touching thecontrol panel circuit board (e.g. by touching thecontrol panel mounting).

1 Error message as a code (see tab. 8-2)2 Location information (equipment) of the detected fault3 Bus address of the unit causing the faultFig. 8-1 Displays an active error message (controller fault)

1 Error message as a code (see tab. 8-2)2 Fault message as clear text (see tab. 8-2)3 Location information (equipment) of the detected fault4 Bus address of the unit causing the faultFig. 8-2 Display of a current error message (heat pump fault)

Inside Unit:Address:

Boiler0

Inside Unit:Address:

Heating Module0

E 9001Fault T-return

Fig. 8-3 Read-out of Protocol

Special Level

Manual OperationFA failure

Protocol

Special Level

FA failure

ProtocolDelete message

Inside Unit:

Address:

Boiler0

Read Protocol


8 x Faults and malfunctions8.2 Malfunctions

Malfunction Possible cause Possible solution

System not working (Operation LED off, noth-ing on the display)

No mains voltageSwitch on the external main switch of the machine.Switch on system fuse(s).Replace system fuse(s).

Switching of the time pro-grams are not working or programmed switching times have been carried out at the wrong time

Time or weekday have not been set correctly. Set the clockSet the weekday

Wrong operating mode set. Engage Operating Mode "Automatic 1" or "Automatic2".

During a switching time the user made a man-ual setting (e.g. changed the target tempera-ture, changed the operating mode)

1. Set rotary switch to position "Info" .

2. Set rotary switch to position "Operating Mode".

3. Select correct operating mode.

Control unit does not respond to entries Operating system of control unit crashed. Carry out RESET of control unit.

Restart system (Mains voltage).

Operating data are not updated Operating system of control unit crashed.

Carry out RESET of control unit.Restart system (Mains voltage).Have the system checked by a ROTEX heatingtechnician.

Heating does not warm up

Room heating Standby switched off (e.g. time program is in the economy phase, outside temperature is too high, parameters for Backup Heater (BU9c) are set incorrectly, requirement for hot water is active)

Check the operating mode setting.Check the request parameters.Check the setting of time a weekday in the controlsystem.

Refrigerant compressor is not working.

With installed Backup Heater (BU9c):Check that the Backup Heater is heating the watertemperature to at least 15 °C (with a low water temper-ature, the system uses the Backup Heater first toattain the minimum water temperature). If applicable,check the power supply, thermal protection andoverheating fuse for the Backup Heater.

System is in the operating mode "Cooling". Switch the operating mode to "heating".

Settings for off-peak mains connection do not correspond to settings for electrical connec-tions.

HT/NT function is active and the parameter [HT/NTContact] is set incorrectly.Other configurations are also possible. However,these must match the type of off-peak mainsconnection.The parameter [SMART GRID] is active and theconnections are set incorrectly.

The power company has sent the high-cost signal.

Wait for the repeat off-peak rate signal which reacti-vates the power supply.



Heating does not warm up enough

Water flow too low.

Check that all stop valves of the water circuit arecompletely open.Check that the water filter is dirty.Check that the expansion tank is defective.Bleed system completely.Using the controller (rotary switch position "Info" )check whether sufficient water pressure (> 0.5 bar) isavailable.Check that the resistance in the water circuit is not toohigh for the pump (see installation manual for"Technical Data").

Target value range is too low. Increase parameter [T vbh1 max].

Weather-dependent set value regulation is active.

Check the settings on the level "HC Configuration" ofthe parameters [T-Outside lim day], [Heat-Slope] andthe settings in the rotary switch position "Set TempDay" .

Optional: Backup Heater (BU9c) not switched on.

Check mains supply of the Backup Heater (BU9c).Thermal contactor on Backup Heater (BU9c) wastriggered. Unlock.Overheat fuse on Backup Heater (BU9c) defective.Replace.Check the parameters [Function Heating Rod] and[BUH s1 power] and [BUH s2 power].

Water volume in system too low

Check water volume and associated primary pressure in expansion container, top up with water or recon-figure primary pressure (see installation manual forheat generator).

Hot water supply is taking too much of the out-put of the heat pump.

Check the settings of the parameter [EquilibriumFunc.] in level "Configuration", sub-level "Setup".Check the settings of the parameter [EquilibriumTemp] in level "Configuration", sub-level "SystemConfiguration".

Hot water does not warm up

DIP switch configured incorrectly Check DIP switch setting on board A1P(see section 8.4).

Hot water supply switched off (e.g. time pro-gram is in the economy phase, parameters for hot water supply have been set incorrectly).

Check the operating mode setting.Check the request parameters.

Storage tank charging temperature too low. Increase the target hot water temperature.

Draw-off rate too high. Reduce the draw-off rate, limit throughput.

Output of heat pump too low. Check the switching times for room heating and hotwater supply for overlaps.

Water volume in system too lowCheck the water volume and the associated primarypressure in the expansion tank, if necessary top up thewater and reset the primary pressure.

Optional: Backup Heater (BU9c) not switched on.

Check mains supply of the Backup Heater (BU9c).Thermal contactor on Backup Heater (BU9c) wastriggered. Unlock.Overheat fuse on Backup Heater (BU9c) defective.Replace.Check the parameters [Function Heating Rod] and[BUH s1 power] and [BUH s2 power].




Room cooling does not cool

Water flow too low.

Check that all stop valves of the water circuit arecompletely open.Check that the expansion tank is defective.Bleed system completely.Using the controller (rotary switch position "Info" )check whether sufficient water pressure (> 0.5 bar) isavailable.Check that the resistance in the water circuit is not toohigh for the pump (see installation manual for"Technical Data").

"Cooling" turned off (e.g. switching time pro-gramme is in the setback phase, exterior tem-perature too low).

Check the operating mode setting.Check the request parameters.Check the setting of time a weekday in the controlsystem.

Refrigerant compressor is not working.

Wait until minimum water temperature is reached(15 °C). At a low water temperature the system mayuse the optional Backup Heater (BU9c) first to reachthe minimum water temperature.

System is in the operating mode "heating". Switch the operating mode to "Cooling".

Cooling effect of room cooling too little

Water flow too low.

Check that all stop valves of the water circuit arecompletely open.Check that the water filter is dirty.Check that the expansion tank is defective.Bleed system completely.Using the controller (rotary switch position "Info" )check whether sufficient water pressure (> 0.5 bar) isavailable.Check that the resistance in the water circuit is not toohigh for the pump (see installation manual for"Technical Data").

Water volume in system too low

Check water volume and associated primary pressure in expansion container, top-up water level if necessary and reconfigure primary pressure (see installationmanual for "Minimum Flow").

Quantity of refrigerant in the system too low or too high.

Have the coolant level checked by a ROTEX specialist heating technician. Have him check the system forleaks.

Circulation pump is being excessively noisy while running

Air in the water circuit Bleed the entire water circuit.

Noises caused by vibrations. Check the ROTEX HPSU compact, its componentsand covers to ensure they are fastened correctly.

Bearings damage in the circulation pump. Reduce speed of pump, replace circulation pump.

Water pressure at pump inlet too low.

Using the controller (rotary switch position "Info" )check whether sufficient water pressure (> 0.5 bar) isavailable.Check that the pressure gauge is working correctly(connect an external pressure gauge).Check that the expansion tank is not defective and that the primary pressure has been set correctly(see installation manual).




8.3 Fault codes

Safety pressure relief valve is leaking or always open.

Expansion tank is defective. Replace expansion tank.

Water quantity or water pressure in the sys-tem is too high.

On the controller (rotary switch setting "Info" )check whether there is adequate water pressure(> 0.5 bar) (must be below the stated maximumpressure) and where necessary drain water off until itlies mid-range.

Safety pressure relief valve is stuck.

Check safety pressure relief valve and if necessary,replace it.– Turn the red knob on the safety pressure relief

valve counterclockwise. If you can hear a rattlingnoise, the safety pressure relief valve needsreplacing.

Tab. 8-1 Possible malfunctions of the ROTEX HPSU compact


Code Error message Component/Designation Fault and possible causesDisplay Internal

9001 80 Fault return sensor Temperature sensor dis-charge water temperature Return line temperature sensor tR2 defective.

9002 81 Fault flow sensor Temperature sensor feed water temperature Flow temperature sensor tV2 defective.

9003 89 Fault frost protec-tion function.

Failure of the frost protec-tion function of the water heat exchanger

Failure of the frost protection function of the water heat exchanger because the water flow is too low. See fault code "7H".Failure of the frost protection function of the water heat exchanger because there is a lack of refrigerant in the system.

9004 7H Fault flow rate Flow disruption water cir-cuit

Water flow is too low or there is none at all, minimum water flow required:– ROTEX HPSU compact 4-8 kW: >720 l/h– ROTEX HPSU compact 11-16 kW: > 900 l/h

Check the following items:All stop valves of the water circuit must be completely open.Optional water filters must not be contaminated.System must run within its operating parameters.System must be completely evacuated.Using the controller (rotary switch position "Info" ) checkwhether sufficient water pressure (> 0.5 bar) is available.If this fault occurs during defrost operation in the operating mode room heating or hot water supply: With optional Backup Heater: check its power supply and fuses.In the switch cabinets of ROTEX HPSU compact, check the pump fuse (FU1) and circuit board fuse (F1).

9005 8F Flow temperature > 75 °C

Outlet water temperature in ROTEX HPSU compact > 75 °C

Discharge water temperature in ROTEX HPSU compact is too high (> 65 °C).

– Temperature sensor discharge water temperature pro-vides incorrect values or

– With installed Backup Heater: STL in the Backup Heater(BU9c) triggered.

9006 8H Flow temperature > 65 °C

Outlet water temperature in ROTEX HPSU compact > 65 °C

9007 A1 IG main board defective

PCB A1P ROTEX HPSU compact Malfunction message. Contact ROTEX heating technician.

9008 A5 Refrigerant tem-perature

Refrigerant temperature outside of the valid range

No heat consumption at underfloor heat exchanger

Check flow.If the flow is OK, replace the refrigerant sensor.

9009 AASTB fault

Optional: STL Backup Heater (BU9c)

STL in the Backup Heater (BU9c) triggered.Check and unlock position of STL.

9010 AC Bridge on board A1P Bridge of connection socket "X21A" missing on the board A1P.9011 C0 Fault flow sensor FlowSensor Flow sensor on ROTEX HPSU compact is defective.



9012 C4 Fault flow sensor Temperature sensor heat exchanger

Temperature sensor heat exchanger of the ROTEX HPSU com-pact is defective.

9013 E1 AG main board defective

PCB in the external heat pump device Malfunction message. Contact ROTEX heating technician.

9014 E3 Over-pressure refrigerant

Pressure in refrigerant system

Pressure in refrigerant system is too high. System must run within its operating parameters.

9015 E4 Under-pressure refrigerant

Low pressure sensor in the external heat pump device

Low pressure sensor in the external heat pump unit activated. Check system for loss of refrigerant and if necessary check low pressure sensor (short circuit).

9016 E5 Load protection compressor

Overload protection refrig-erant compressor

Overload protection refrigerant compressor triggered. System must run within its operating parameters.

9017 E7 Fan blocked Fan block in the external heat pump unit

A fan in the external heat pump device is blocked. Check fan for dirt affecting it, the fan may be defective.

9018 E9 Expansion valve Electronic expansion valve

The electronic expansion valve in the external heat pump unit is defective.

9019 EC Hot water temper-ature > 85 °C

Temperature in internal hot water tank is too high

The temperature sensor in the hot water storage tank shows a temperature value of > 85 °C. Check that the temperature sensor is showing the correct value. With installed Backup Heater (BU9c): Transfer STB signal booster function faulty. Check connection. Check switching contactor Backup Heater for short circuit.

9020 F3 Over-temperature evaporator

The discharge tempera-ture from the heat exchanger of the external heat pump unit is too high

The discharge temperature from the heat exchanger of the exter-nal heat pump unit is too high due to a blockage. Remove possible contamination on the heat exchanger. Contact ROTEX heating technician if the fault signal persists.

9021 H3 HPS-SystemHeat pump system (only with 11-16 kW sys-tem)

Internal fault in the heat pump system. Contact ROTEX heating technician.

9022 H9 Fault AT sensor External heat pump unit temperature sensor

The external temperature sensor of the external heat pump unit is defective.

9023 HC Fault storage tank sensor

Hot water storage tank temperature sensor

Temperature sensor/connecting cable of storage tank sensor is faulty.

9024 J1 Pressure sensor Pressure sensor

Malfunction message. Contact ROTEX heating technician.

9025 J3 Fault return sensor Thermistor discharge

9026 J5 Fault suction pipe sensor

Temperature sensor suction pipe

9027 J6 Aircoil sensor defrost Aircoil temperature sensor

9028 J7 Aircoil sensor Temp. Aircoil temperature sensor

9029 J8 Fault refrigerant sensor AG

Temperature sensor liquid line

The temperature sensor of the fluid line in the external heat pump device is defective. Contact ROTEX heating technician.

9030 L4

Electrical fault

Electrical components

Malfunction message. Contact ROTEX heating technician.

9031 L5 Electrical components9032 L8 Electrical components9033 L9 Electrical components9034 LC Electrical components

9035 P1 Board defective PCB in the external heat pump device

9036 P4 Electrical fault Electrical components9037 PJ Output setting Incorrect capacity setting

9038 U0 Refrigerent leak Refrigerant loss There is too little or no refrigerant left in the system. Check system for leaks, repair and refill.

9039 U2 Under/ Over volt-age Main circuit without power Malfunction message. Contact ROTEX heating technician.

9040 U3 Screed function Screed function active No fault.




Tab. 8-2 Error codes on the main control unit of ROTEX HPSU compact

9041 U4

Transmission error

Communication fault

Malfunction message. Contact ROTEX heating technician.9042 U5 Communication fault9043 U7 Communication fault9044 UA Communication fault

E75 — — Outside temperature sen-sor Outside temperature sensor defective.

E76 — — Domestic hot water tem-perature sensor Domestic hot water temperature sensor defective.

E81 — — Circuit board RoCon BM1 Parameter store in EEPROM faulty. E88 — — Circuit board RoCon BM1 Parameter store in external flash memory faulty.E91 — — Connected CAN modules Bus detection of a CAN module doubly present.E128 — — Temperature sensor Temperature sensor in flow sensor defective.E129 — — Pressure sensor Pressure sensor defective.

E198 — — Fault volume flow – Internal circulation pump is not running.– Flowsensor defective.

E200 — — Communication faultThe Modbus communication between the operating section BM1 and main board A1P is disrupted. Check cabling, check RTXAL4 board.

E8005 — — Water pressure heating network too low Water pressure has fallen below the minimum permissible value.

E9000 — — Temporary internal mes-sage

If this message is shown for a longer period of time, contact the ROTEX Service Team.

W8006 — — Heating network Maximum permissible pressure drop exceeded.

W8007 — — Water pressure heating network too high Water pressure has exceeded the maximum permissible value.


Respect the maximum tightening torque of the temper-ature sensor (see chapter 10.3 "Tightening torque").


8 x Faults and malfunctions8.4 Configuration DIP switch

Check the DIP switch setting on the A1P circuit board of theROTEX HPSU compact, adjust where necessary (see tab. 8-3).The factory preset may only be changed if e.g. anoptional accessory was connected.

Tab. 8-3 DIP Switch Settings (* = factory setting)

WARNING!

To make changes to the DIP switch settings, the installation must first be disconnected from the power supply.

Non compliance may cause damage to the ROTEX HPSU compact.

DIP switch settings are not recognised until a brief inter-ruption to the power supply.

Fig. 8-4 Setting of DIP switch SS2

DIP switch

No. Designation Setting

SS2

1 Do not change. – –*

2 Domestic hot water generation On* Off

3 Room thermostat / Pump in continuous operation On Off*

4 Do not change. – –*

9 x Hydraulic system connection


9 Hydraulic system connection

WARNING!

High temperatures can occur in the solar storage tank. Therefore, sufficient scalding protection must be included when the hot water system is installed (auto-matic hot water mixing device).

CAUTION!

The ROTEX units can also be optionally fitted with gravity breaks made of plastic. They are suitable for maximum operating temperatures of 95 °C. If a heat exchanger is operated at temperatures greater than 95 °C, another gravity brake must be installed in the building.

A selection of diagrams of the most common systems is shown below. The arrangements shown are only examples, and are no substitute for careful system planning. For more diagrams see the ROTEX home-page.

Fig. 9-1 ROTEX HPSU compact (all types) with DrainBack Solar (for legend see tab. 9-1)



Fig. 9-2 ROTEX HPSU compact 508/516 with wood-burning boiler <8kW without solar support (Legend see tab. 9-1)

Fig. 9-3 ROTEX HPSU compact 508/516 (BIV) with wood-burning boiler <8kW and Drain-Back solar (Legend see tab. 9-1)



Short name. Meaning1 Cold water distribution network2 Hot water distribution network3 Heating flow4 Heating return flow5 Mixing circuit6 Circulation7 Check valve, return valve7a Non return valves8 Solar circuit9 Gas pipe (refrigerant)10 Fluid pipe (refrigerant)3UVB1 3-Way Switch valve (temperature limiter)3UV DHW 3-Way Switch valve (hot water/heating)AUX AUX contact control cable (see chapter 4.4.18)BU9c Backup HeaterBV Bypass valveC Refrigerant compressorCW Cold waterDHW Domestic hot waterE Expansion valve

FLS Flow Sensor - Solar flow and feed flow tempera-ture measurement

H1,H2 ... Hm Heating circuitsMAG Diaphragm expansion vesselMIX 3-way-mixer with drive motorMK1 Mixer group with high-efficiency pump

MK2 Mixer group with high-efficiency pump (PWM controlled)

PMi Mixing circuit pumpPS1 Solar operating pumpPS2 Solar pressure increasing pumpPW1 Primary circuit pump WEXPW2 Secondary circuit pump WEXPZ Circulation pumpPWT Panel heat exchanger (condenser)RoCon HP Control ROTEX HPSU compactRoCon M1 Mixer circuit controlRPS3 Solar regulating and pump unit RRLQ External unit for heat pumpRT Room thermostatSAH Storage tank connection (wood boiler)SK Solar panel fieldSV Safety over-pressure valve

tAUOutside temperature sensor RoCon OT1 (see chapter 4.4.10)

tDHWStorage tank temperature sensor (heat genera-tor)

tMi Mixer circuit flow temperature sensorTK Solar collector temperature sensorTR Solar return flow temperature sensorTS Solar storage cylinder temp. sensorTV Solar flow temperature sensor

TMV Thermostatic 3-way valve for return temperature increase

V Fan (vaporiser)VS Protection against scalding VTA32WEX External heat generator

Follow the information about the electrical con-nection!

Tab. 9-1 Short names in hydraulic drawings

Short name. Meaning


10 x Technical data10 Technical data

10.1 Equipment data

10.1.1 ROTEX HPSU compact 304/308 (BIV)

Unit ROTEX HPSU compact304 308 304 BIV 308 BIV

Can be used with an external heat pump unit

RRLQ004CAV3

RRLQ006CAV3 /

RRLQ008CAV3

RRLQ004CAV3

RRLQ006CAV3 /

RRLQ008CAV3

Dimensions and weightsDimensions (H x W x D) cm 195 x 61.5 x 59.5Empty weight kg 87 92Main components

Water circulation pump

Type — Grundfos UPM2 15-70 CES87Speed rates — PWMVoltage V 230Frequency Hz 50Protection type — IP 42Power consumption A 0.38Maximum rated output W 45

Heat exchanger (Water/Coolant)

Type — Stainless steel underfloor heat exchangerNumber — 1Volume Litres 0.67Minimum flow quantity 2) l/min 3.5Maximum flow quantity l/min 40Thermal insulation — EPP

Storage tankTotal storage capacity Litres 300Maximum permissible storage water temperature °C 85Heat consumption at stand-by and at 60 °C kWh/24h 1.3

Domestic water heat exchanger (stainless steel 1.4404)

Water capacity heat exchanger Litres 27.8Maximum operating pressure bar 6Domestic water heat exchanger sur-face m2 5.8

Storage tank charg-ing heat exchanger (stainless steel 1.4404)

Water capacity heat exchanger Litres 13.2

Heat exchanger surface aream2

2.7

Pressurised solar heat exchanger (stainless steel 1.4404)

Water capacity heat exchanger Litres — 4.2


— 0.8

10 x Technical data


Heating system performance data 5)

Volume of hot water without reheating at draw-off rate (8 l/min /12 l/min) 3)

(TCW=10 °C / TDHW=40 °C / TS=50 °C)

Litres 184 / 153


(TCW=10 °C / TDHW=40 °C / TS=60 °C)

Litres 282 / 252


(TCW=10 °C / TDHW=40 °C / TS=65 °C)

Litres 352 / 321

Reheating time with a draw-off quan-tity:

min140 l = 5820 Wh (Ø bathtub draw-off quantity) 90 45 90 45

90 l = 3660 Wh (Ø shower draw-off quantity) 55 30 55 30

Pipe connectionsCold and hot water Inches 1" AGHeating feed and return flow Inches 1" IGSolar connections Inches 1" IG

Refrigerant circuitNumber of circuits — 1

Pipe connections

Number — 2

Liquid lineType Inches Flanged connection

External Diameter

Inches 1/4" AG

Gas linesType — Flanged connection

External Diameter

Inches 5/8" AG

Operating data

Operating range

Flow temperature for room heat-ing/cooling function

Heating (min./max.)

°C 15 to 55

Cooling (min/max) °C 5 to 22

Hot water heating (with BUH)

Heating (min./max.) °C 25 to 80

Noise levelAudibility dBA 42Noise pressure 1) dBA 28

Electrical data:

Voltage supply

Phases — 1Voltage V 230Voltage range V Voltage ±10%Frequency Hz 50

Mains connection 6)

Exterior heat pump unit for ROTEX HPSU compact

— 4G

External unit for heat pump — 3GOptional auxiliary heating

Backup Heater (BU9c)

— 3G (1-phase) / 5G (3-phase)

1) With a reference spacing of 1 m.2) Upstream of safety protection.3) Completely load with storage tank charging heat exchanger.

5) TCW - Chilled water inlet temperatureTDHW - Hot-water tap temperatureTS - Storage-tank temperature

6) Number of wires in the connection cable, include the protective conduc-tor. The cross section of the wires depends on the current load, the length of the connecting cable and the relevant statutory provisions.

Tab. 10-1 Basic data ROTEX HPSU compact 304/308 (BIV)

Unit ROTEX HPSU compact304 308 304 BIV 308 BIV


10 x Technical data10.1.2 ROTEX HPSU compact 508/516 (BIV)

Unit ROTEX HPSU compact 508 516 508 BIV 516 BIV

Can be used with an external heat pump unit

RRLQ006CAV3 /

RRLQ008CAV3

RRLQ011CA / RRLQ014CA / RRLQ016CA

(V3/W1)

RRLQ006CAV3 /

RRLQ008CAV3

RRLQ011CA / RRLQ014CA / RRLQ016CA

(V3/W1)Dimensions and weightsDimensions (H x W x D) cm 195 x 79 x 79Empty weight kg 114 116 119 121Main components

Water circulation pump

Type — Grundfos UPM2 15-70 CES87Speed rates — PWMVoltage V 230Frequency Hz 50Protection type — IP 42Power consumption A 0.38Maximum rated output W 45

Heat exchanger (Water/Coolant)

Type — Stainless steel underfloor heat exchangerNumber — 1Volume Litres 0.67Minimum flow quantity 2) l/min 3.5Maximum flow quantity l/min 40Thermal insulation — EPP

Storage tankTotal storage capacity Litres 500Maximum permissible storage water temperature °C 85Heat consumption at stand-by and at 60 °C kWh/24h 1.4

Domestic water heat exchanger (stainless steel 1.4404)

Water capacity heat exchanger Litres 29Maximum operating pressure bar 6Domestic water heat exchanger sur-face m2 6

Storage tank charg-ing heat exchanger (stainless steel 1.4404)

Water capacity heat exchanger Litres 12.1 17.4 12.1 17.4


2.5 3.5 2.5 3.5

Pressurised solar heat exchanger (stainless steel 1.4404)

Water capacity heat exchanger Litres — 12.5 — 12.5


— 1.7 — 1.7

10 x Technical data


Heating system performance data 5)


(TCW=10 °C / TDHW=40 °C / TS=50 °C)

Litres 364 / 318328 4) / 276 4)

324 / 282288 4) / 240 4)


(TCW=10 °C / TDHW=40 °C / TS=60 °C)

Litres 540 / 494 492 / 444


(TCW=10 °C / TDHW=40 °C / TS=65 °C)

Litres 612 / 564 560 / 516

Reheating time with a draw-off quan-tity:

min140 l = 5820 Wh (Ø bathtub draw-off quantity) 45 25 45 25

90 l = 3660 Wh (Ø shower draw-off quantity) 30 17 30 17

Pipe connectionsCold and hot water Inches 1" AGHeating feed and return flow Inches 1" IGSolar connections Inches 1" IG

Refrigerant circuitNumber of circuits — 1

Pipe connections

Number — 2

Liquid lineType Inches Flanged connection

External Diameter

Inches 1/4" AG 3/8" AG 1/4" AG 3/8" AG

Gas linesType — Flanged connection

External Diameter

Inches 5/8" AG

Operating data

Operating range

Flow temperature for room heat-ing/cooling function

Heating (min/max)

°C 15 to 55

Cooling (min/max) °C 5 to 22

Hot water heating (with BUH)

Heating (min/max) °C 25 to 80

Noise levelAudibility dBA 42 46 42 46Noise pressure 1) dBA 28 32 28 32

Electrical data:

Voltage supply

Phases — 1Voltage V 230Voltage range V Voltage ±10%Frequency Hz 50

Mains connection 6)

Exterior heat pump unit for ROTEX HPSU compact

— 4G

External unit for heat pump — 3G 3G / 5G 3G 3G / 5GOptional auxiliary heating

Backup Heater (BU9c)

— 3G (1-phase) / 5G (3-phase)

1) With a reference spacing of 1 m.2) Upstream of safety protection.3) Completely load with storage tank charging heat exchanger.4) Storage tank charged just by heat pump without backup heat-

er.

5) TCW - Chilled water inlet temperatureTDHW - Hot-water tap temperatureTS - Storage-tank temperature

6) Number of wires in the connection cable, include the protective conduc-tor. The cross section of the wires depends on the current load, the length of the connecting cable and the relevant statutory provisions.

Tab. 10-2 Basic data ROTEX HPSU compact 508/516 (BIV)

Unit ROTEX HPSU compact 508 516 508 BIV 516 BIV


10 x Technical data10.2 Characteristic lines

10.2.1 Sensor characteristic lines

Temperature sensorMeasured temperature in °C-20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120

Sensor resistance in kOhm according to standard or manufacturer's indicationstDHW2 NTC 4783.0 1414.5 811.5 480.6 293.2 183.8 118.2 77.7 52.3 35.8 25.1 17.8 12.9 9.5 7.1

tAu, tDHW1 NTC 98.66 56.25 33.21 20.24 12.71 8.20 5.42 3.66 2.53 1.78 1.28 0.93 0.69 0.52 0.36

tV1, tV2, tV, BH1, tR2

NTC 197.80 120.00 65.84 39.91 24.95 16.04 10.58 7.14 4.77 3.19 2.36 1.74 1.33 1.07 0.84

Flow sensor (flow/temperature)

FLS200

V1

Measured flow in l/min10,0 20,0 30,0 40,0 50,0 60,0 70,0 80,0 —

Sensor output frequency in Hz(14 - 229 Hz) 28 54 81 108 135 162 188 215 —

tR1

Measured temperature in °C10,0 20,0 30,0 40,0 50,0 60,0 70,0 80,0 90,0

Sensor resistance in Ohms(Pt 1000) 1039 1077 1116 1155 1194 1232 1270 1308 1347

Tab. 10-3 Sensor Table ROTEX HPSU compact Maximum tightening torque of sensor =10 Nm.

RS Sensor resistance (NTC)t TemperaturetDHW2 Storage temperature sensortR2 Return temperature sensortV1, tV2 Flow temperature sensortV, BH Flow temperature sensor Backup HeaterFig. 10-1 Resistance characteristics of the NTC temperature sensor

ROTEX HPSU compact - part 1

RS Sensor resistance (NTC)t TemperaturetAU Outside temperature sensor RoCon OT1tDHW1 Storage temperature sensorFig. 10-2 Resistance characteristics of the NTC temperature sensor

ROTEX HPSU compact - part 2

10 x Technical data


10.2.2 Characteristic curves for pumps

10.3 Tightening torque

f Frequencym Flow rateFig. 10-3 Characteristics of the flow meter in the flow sensor (FLS200)

ROTEX HPSU compact

RS Sensor resistance (NTC)t TemperaturetR1 Return line temperature sensor in the flow meterFig. 10-4 Temperature characteristics of the return flow temperature in

the flow sensor(FLS200) ROTEX HPSU compact

U VoltageP Water pressureFig. 10-5 Characteristics of the pressure sensor (DS) ROTEX HPSU

compact

PR Residual pumping height of circulation pump (in mbar)mH Flow heating network (in l/h)Fig. 10-6 Residual pumping height of ROTEX HPSU compact 304/308

(BIV) / ROTEX HPSU compact 508 (BIV) circulation pump with heating support heat exchanger

PR Residual pumping height of circulation pump (in mbar)mH Flow heating network (in l/h)Fig. 10-7 Residual pumping height of ROTEX HPSU compact 516 (BIV)

circulation pump with heating support heat exchanger

Component Thread size

Tightening torque

Temperature sensor all max. 10 NmHydraulic line connections (Water) 1" 25 to 30 NmGas line connections (Refrigerant)

5/8" 63 to 75 Nm

Liquid line connections (Refrigerant)

1/4" 15 to 17 Nm

Liquid line connections (Refrigerant)

3/8" 33 to 40 Nm

Backup Heater 1.5" max. 10 Nm (hand-tight)

Tab. 10-4 Tightening torque


10 x Technical data10.4 Circuit diagram ROTEX HPSU compact

Fig. 10-8 ROTEX HPSU compact circuit diagram

11 x List of keywords


11 List of keywordsA

Additional water . . . . . . . . . . . . . . . . 6Air Purge . . . . . . . . . . . . . . . . . . . . . 37

BBackup Heater . . . . . . 16, 17, 30, 38

Electrical connection . . . . . . . . . . . 23Backup heater . . . . . . . . . . . . . . .7, 31

Installation location . . . . . . . . . . . . 12

CCharacteristic curves for pumps . . . 55Circuit boards . . . . . . . . . . . . . . . . . 19Circuit diagram . . . . . . . . . . . . . . . . 56Circulation pump

Minimum flow . . . . . . . . . . . . . . . . 31Vent . . . . . . . . . . . . . . . . . . . . . . . 30

Convection brake . . . . . . . . . . . . . . 12

DDanger of frost . . . . . . . . . . . . . . . . 32Declaration of conformity . . . . . . . . . 3Decommissioning . . . . . . . . . . . . . . 32Design and components . . . . . . . . . . 7DIP switch . . . . . . . . . . . . . . . . . . . . 46Dirt filter . . . . . . . . . . . . . . . . . . . . . 16Disposal . . . . . . . . . . . . . . . . . . . . . 34

EElectrical connection . . . . . . . . . . . . 17

Backup Heater . . . . . . . . . . . . . . . 23Connection diagrams . . . . . . . . . . 18External unit for heat pump . . . . . 22HP convector . . . . . . . . . . . . . . . . 25Important information . . . . . . . . . . . 5Low tariff connection . . . . . . . . . . . 25Room station RoCon U1 . . . . . . . . 24Room thermostat . . . . . . . . . . . . . 24Solar installation . . . . . . . . . . . . . . 23Switching contact (AUX output) . . 25Symbols, abbreviations . . . . . . . . 26

Error message . . . . . . . . . . . . . . . . 39Explanation of symbols . . . . . . . . . . . 4External unit for heat pump . . . . . . . 17

Electrical connection . . . . . . . . . . . 22Permissible combinations . . . . . . . . 5

FFaults and malfunctions

Fault codes . . . . . . . . . . . . . . . . . . 43Malfunctions . . . . . . . . . . . . . . . . . 40

Filling processHeating system . . . . . . . . . . . . . . . 37outer layer of storage tank . . . . . . 38

HHeating expert log-in . . . . . . . . . . . . 30Hydraulic connection

Connection examples . . . . . . . . . . 47Connections . . . . . . . . . . . 7, 13, 14Important information . . . . . . . . . . . 6Installation . . . . . . . . . . . . . . . . . . 16

IInitial start-up . . . . . . . . . . . . . . . . . 29

KKFE filling connection . . . . . . . 32, 38

LLaying refrigerant lines . . . . . . . . . . 28Low tariff mains connection (HT/NT) 25

MMaintenance . . . . . . . . . . . . . . . . . . 35Minimum flow . . . . . . . . . . . . . . . . . 30

OOil trap arc . . . . . . . . . . . . . . . . . . . 28Operating safety . . . . . . . . . . . . . . . . 5

PPressure test and vacuum . . . . . . . 28Proper use . . . . . . . . . . . . . . . . . . . . 5

RRe-commissioning . . . . . . . . . . . . . 31Relevant documents . . . . . . . . . . . . . 4

SSafety devices . . . . . . . . . . . . . . . . . . 7Sanitary connection . . . . . . . . . . . . . 6Sensor characteristic lines . . . . . . . 54Set-up . . . . . . . . . . . . . . . . . . . . . . . 15Shutdown

Final . . . . . . . . . . . . . . . . . . . . . . . 34Temporary . . . . . . . . . . . . . . . . . . 32

Smart Grid - SG . . . . . . . . . . . . . . . 26Solar installation

Electrical connection . . . . . . . . . . . 23Start-up . . . . . . . . . . . . . . . . . . . . . . 29

Control . . . . . . . . . . . . . . . . . . . . . 29Screed function . . . . . . . . . . . . . . . 31

TTapping rate . . . . . . . . . . . . . . . . . . 41Technical data . . . . . . . . . . . . . . . . . 50

Basic data . . . . . . . . . . . . . . . . . . . 50Characteristic curves for pumps . . 55Sensor characteristic lines . . . . . . 54

Technician password . . . . . . . . . . . 30Temperature for continuous use . . . 17Tightening torque . . . . . . . . . . . 7, 55

UUnit installation room . . . . . . . . . . . . 6

WWarranty . . . . . . . . . . . . . . . . . . . . . . 3


12 x Notes12 Notes

12 x Notes


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ROTEX HPSU compact Installation and Operating...

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