Installermanual SMO20 - NIBE

Installer manual

LEK

SMO 20Control module

IHB GB 1546-5 231758

Quick guideNavigation

Ok button (confirm/select)

Back button (back/undo/exit)

Control knob (move/increase/reduce)

A detailed explanation of the button functions can be found on page 29.

How to scroll through menus and make different settings is described on page 31.

temperature1.1

Set the indoor climate

2X

INDOOR CLIMATE

HOT WATER

INFO

HEAT PUMP

The mode for setting the indoor temperature is accessed by pressing the OK button twice, when in the start modein the main menu.

INDOOR CLIMATE

HOT WATER

INFO

HEAT PUMP

off

temporary lux2.1

3 hrs

6 hrs

12 hrs

Increase hot water volume

2X

1X

To temporarily increase the amount of hot water (if a hot water heater is installed to your SMO 20), first turn thecontrol knob to mark menu 2 (water droplet) and then press the OK button twice.

In event of disturbances in comfortIf a disturbance in comfort of any type occurs there are some measures that can be taken before you need tocontact your installer. See page 44 for instructions.

Table of Contents

41 Important information4Safety information

72 Delivery and handling7Mounting

7Supplied components

83 The Control Module Design8Electrical components

94 Pipe connections9General

10Docking alternatives

135 Electrical connections13General

16Connections

19Optional connections

23Connecting accessories

246 Commissioning and adjusting24Preparations

24Commissioning with NIBE air/water heatpump

24Commissioning with additional heatingonly

24Check the reversing valve

24Check AUX socket

24Cooling mode

25Start guide

26Setting the cooling/heating curve

28Setting hot water circulation

28SG Ready

297 Control - Introduction29Display unit

30Menu system

338 Control33Menu 1 - INDOOR CLIMATE

34Menu 2 - HOT WATER

34Menu 3 - INFO

35Menu 4 - MY SYSTEM

36Menu 5 - SERVICE

419 Service41Service actions

4410 Disturbances in comfort44Manage alarm

44Troubleshooting

45Additional heating only

4611 Accessories

4812 Technical data48Dimensions and setting-out coordinates

49Technical specifications

50Electrical circuit diagram

54Index

3Table of Contents |SMO 20

Safety informationThis manual describes installation and service proced-ures for implementation by specialists.

This appliance can be used by childrenaged from 8 years and above and per-sons with reduced physical, sensory ormental capabilities or lack of experienceand knowledge if they have been givensupervision or instruction concerninguse of the appliance in a safe way andunderstand the hazards involved. Chil-dren shall not play with the appliance.Cleaning and user maintenance shallnot be made by children without super-vision.

Rights to make any design or technicalmodifications are reserved.

©NIBE 2015.

Symbols

NOTE

This symbol indicates danger to machine orperson.

Caution

This symbol indicates important informationabout what you should observe when main-taining your installation.

TIP

This symbol indicates tips on how to facilitateusing the product.

MarkingSMO 20 is CE marked and fulfils IP21.

The CE marking means that NIBE ensures that theproduct meets all regulations that are placed on itbased on relevant EU directives. The CE mark is obligat-ory for most products sold in the EU, regardless wherethey are made.

IP21 means that objects with a diameter larger thanor equivalent to 12.5 mm cannot penetrate and causedamage and that the product is protected againstvertically falling drops of water.

Serial numberThe serial number can be found on the upper side ofthe cover on the control module.

LEK

Serial number

Caution

Always give the product's serial number whenreporting a fault.

Country specific information

Installer manual

This installer manual must be left with the customer.

SMO 20Chapter 1 | Important information4

1 Important information

Inspection of the installationCurrent regulations require the heating installation to be inspected before it is commissioned. The inspection mustbe carried out by a suitably qualified person. Fill in the page for information about installation data in the Usermanual.

DateSignatureNotesDescription✔

Electricity (page 13)

Communication, heat pump

Supply connected 230 V

Outside sensor

Temperature sensor, hot water charging

Temperature sensor, hot water top

Temperature sensor, external flow line

Temperature sensor, external supply lineafter electric heater

Temperature sensor, external return line

Charge pump

Shuttle valve

AUX 1

AUX 2

AUX 3

AUX 4

AUX 5

AUX 6

AA2-X4

Miscellaneous

Checking additional heater

Checking the function of the reversingvalve

Checking charge pump function

Completed installation check of heatpump and associated equipment

5Chapter 1 | Important informationSMO 20

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Contact information

KNV Energietechnik GmbH, Gahberggasse 11, 4861 SchörflingAT

Tel: +43 (0)7662 8963-0 Fax: +43 (0)7662 8963-44 E-mail: [email protected] www.knv.atNIBE Wärmetechnik c/o ait Schweiz AG, Industriepark, CH-6246 AltishofenCH

Tel: (52) 647 00 30 Fax: (52) 647 00 31 E-mail: [email protected] www.nibe.chDruzstevni zavody Drazice s.r.o, Drazice 69, CZ - 294 71 Benatky nad JizerouCZ

Tel: +420 326 373 801 Fax: +420 326 373 803 E-mail: [email protected] www.nibe.czNIBE Systemtechnik GmbH, Am Reiherpfahl 3, 29223 CelleDE

Tel: 05141/7546-0 Fax: 05141/7546-99 E-mail: [email protected] www.nibe.deVølund Varmeteknik A/S, Member of the Nibe Group, Brogårdsvej 7, 6920 VidebækDK

Tel: 97 17 20 33 Fax: 97 17 29 33 E-mail: [email protected] www.volundvt.dkNIBE Energy Systems OY, Juurakkotie 3, 01510 VantaaFI

Puh: 09-274 697 0 Fax: 09-274 697 40 E-mail: [email protected] www.nibe.fiNIBE Energy Systems France Sarl, Zone industrielle RD 28, Rue du Pou du Ciel, 01600 ReyrieuxFR

Tel : 04 74 00 92 92 Fax : 04 74 00 42 00 E-mail: [email protected] www.nibe.frNIBE Energy Systems Ltd, 3C Broom Business Park, Bridge Way, Chesterfield S41 9QGGB

Tel: 0845 095 1200 Fax: 0845 095 1201 E-mail: [email protected] www.nibe.co.ukNIBE Energietechniek B.V., Postbus 634, NL 4900 AP OosterhoutNL

Tel: 0168 477722 Fax: 0168 476998 E-mail: [email protected] www.nibenl.nlABK AS, Brobekkveien 80, 0582 Oslo, Postadresse: Postboks 64 Vollebekk, 0516 OsloNO

Tel. sentralbord: +47 23 17 05 20 E-mail: [email protected] www.nibeenergysystems.noNIBE-BIAWAR Sp. z o. o. Aleja Jana Pawła II 57, 15-703 BIAŁYSTOKPL

Tel: 085 662 84 90 Fax: 085 662 84 14 E-mail: [email protected] www.biawar.com.pl© "EVAN" 17, per. Boynovskiy, Nizhny NovgorodRU

Tel./fax +7 831 419 57 06 E-mail: [email protected] www.nibe-evan.ruNIBE AB Sweden, Box 14, Hannabadsvägen 5, SE-285 21 MarkarydSE

Tel: +46-(0)433-73 000 Fax: +46-(0)433-73 190 E-mail: [email protected] www.nibe.se

For countries not mention in this list, please contact Nibe Sweden or check www.nibe.eu for more information.

SMO 20Chapter 1 | Important information6

MountingNOTE

For wall mounting, use the mounting adaptedfor the base.

110

410

360

110

10

310

2157035

Use all mounting points and install SMO 20 upright flatagainst the wall without any part of the control moduleprotruding out beyond the edge of the wall.

Leave at least 100 mm free space around the controlmodule to facilitate access and cable routing on install-ation and service.

NOTE

Access the screws for installing the front coverfrom underneath.

Supplied components

Heating pipe pasteOutside sensor

LE

K

Temperature sensorInsulation tape

LE

K

Cable tiesAluminium tape

7Chapter 2 | Delivery and handlingSMO 20

2 Delivery and handling

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1

AA2

AA4-XJ3

X1

SF1

AA4

X2

AA7

AA4-XJ4

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AA2

X1

FA1

AA7

UB2UB1

PF3 Electrical componentsBase cardAA2Display unitAA4

AA4-XJ3 USB socket

AA4-XJ4 Service outlet (No function)Extra relay circuit boardAA7Miniature circuit-breakerFA1Terminal block, incoming electrical supplyX1Terminal block, control signal circulation pump,sensors AUX inputs and heat pump

X2

SwitchSF1

Serial number platePF3Cable grommet, incoming supply electricity,power for accessories

UB1

Cable gland, signalUB2

Designations in component locations according tostandard IEC 81346-1 and 81346-2.

SMO 20Chapter 3 | The Control Module Design8

3 The Control Module Design

GeneralPipe installation must be carried out in accordance withcurrent norms and directives. See manual for compat-ible NIBE air/water heat pump for installation of theheat pump.

Compatible NIBE air/water heat pumpsCompatible NIBE air/water heat pumps must beequipped with a control card that has at least thesoftware version given in the following list. The controlcard version is displayed in the heat pump's display (ifapplicable) upon start-up.

Software versionProduct

55F2015

55F2016

118F2020

55F2025

55F2026

all versionsF2030

all versionsF2040

55F2300

Symbol key

MeaningSymbol

Shut-off valve

Trim valve

Shunt / shuttle valve

Safety valve

Temperature sensor

Pressure gaugeP

Circulation pump

Particle filter

Auxiliary relay

Temperature sensor installation on pipe

LEK

LEK

The temperature sensors are mounted with heat con-ducting paste, cable ties (the first cable tie is securedto the pipe in the middle of the sensor and the othercable tie is mounted approx. 5 cm beyond the sensor)and aluminium tape. Then insulate with supplied insu-lation tape.

NOTE

Sensor and communication cables must notbe placed near power cables.

9Chapter 4 | Pipe connectionsSMO 20

4 Pipe connections

Docking alternativesSMO 20 can be connected with other products fromNIBE in several different ways, some of which are shownbelow (accessories may be required).

Further option information is available at www.nibe.euand in the respective assembly instructions for the ac-cessories used. See page 46 for a list of the accessoriesthat can be used with SMO 20.

Installations with SMO 20 can produce heating andhot water. Cooling can also be produced, but it de-pends on the heat pump that is used.

On cold days of the year when the access to energyfrom the air is reduced the additional heating cancompensate and help to produce heat. The additionalheating is also good to have as assistance if the heatpump ends up outside its working range or if it hasbeen blocked for any reason.

NOTE

The heating medium side and the hot waterside must be fitted with the necessary safetyequipment in accordance with the applicableregulations.

This is the outline diagram. Actual installationsmust be planned according to applicablestandards.

ExplanationSMO 20AA25Outdoor sensor1)BT1Temperature sensor, hot water charging1)BT6Temperature sensor, hot water top1)BT7Temperature sensor, external supply line1)BT25Room sensorBT50Temperature sensor, external supply lineafter electric heater

BT63

Temperature sensor, external return line1)BT71Circulation pump, Heating mediumGP10Reversing valve, Hot water/Heating medi-um2)

QN10

Additional heatEB1Immersion heaterEB1Auxiliary relay/Contactor2)KA1Heat pump systemEB101Temperature sensor, return line3)BT3Temperature sensor, condenser supplyline3)

BT12

Heat pumpEB101Safety valveFL10Charge pump2)GP12Particle filter3)HQ1Drain valve, Heating mediumQM1Shut-off valve, Heating medium, FlowQM31Shut off valve, Heating medium, ReturnQM32Shut-off valveQM43

Cooling systemEQ1Temperature sensor, cooling supply line2)BT64Single jacket accumulator tank, coolingCP6Circulation pump, coolingGP13Reversing valve, Cooling/Heating2)QN12

MiscellaneousExpansion vessel closed, Heating mediumCM1Buffer vessel (UKV)CP5Accumulator tank with hot water heatingCP10Immersion heaterEB20Safety valve, Heating mediumFL2Auxiliary relay/ContactorKA1Trim valveRN10

1) Included in and supplied SMO 20

2) Included in and supplied accessory

3) Included in and supplied NIBE heat pump (can vary dependingon heat pump).

Designations according to standards 81346-1 and81346-2.

SMO 20Chapter 4 | Pipe connections10

Compatible NIBE air/water heat pump together with SMO 20 - docking step controlled additional heat before reversing valve for hot water and cooling function (4 pipe system)

-FL2

-CM1

-EB101

-QM1

-BT3

-BT12 -QM31

-QM32 -QM43-GP12

-EB101

-HQ1

-BT1

-AA25

-AA25-BT50-AA25

-BT63-KA1

-EB1

-FL10

-RN10

-CP10

-AA25-QN10

-AA25-BT7

-AA25-BT6

-GP13

-CP6

-BT64

-EQ1-QN12

-EQ1

-EB1

NOTE

NIBE does not supply all components in thisoutline diagram.

SMO 20 (AA25) starts and stops the heat pump (EB101)to meet the heat and hot water demand of the install-ation. At simultaneous heating and hot water demandthe reversing valve switches (AA25-QN10) periodicallybetween the climate system and the water heater/ac-cumulator tank (CP10). When the hot water heater/ac-cumulator tank is fully charged (CP10), the reversingvalve switches (AA25-QN10) to the climate system.

Additional heat (EB1) is connected automatically whenthe power demand for the installation exceeds theheat pump capacity. This is used for both heating andcharging hot water.

The additional heat can also be used if a higher temper-ature in the hot water is required than the heat pumpcan produce.

During cooling operation (requires compatible heatpump) the reversing valve (EQ1-QN12) switches to thecooling system (EQ1). If several simultaneous demandsoccur while there is a cooling demand the installationreacts differently. In event of a hot water demand thereversing valve (EQ1-QN12) switches back and hotwater is produced until the demand is fulfilled. In eventof a heating demand the reversing valve (EQ1-QN12)instead switches periodically between the demands. Ifthe cooling demand is met, the reversing valve switchesback to basic mode (heat/hot water).

11Chapter 4 | Pipe connectionsSMO 20

Compatible air/water heat pump together with SMO 20 - docking step controlled additionalheat after reversing valve for hot water and cooling function (4 pipe system)

-EB20

-KA1

-FL2

-CM1

-EB101

-QM1

-BT3

-BT12 -QM31

-QM32 -QM43-GP12

-EB101

-HQ1

-BT1

-AA25

-AA25 -AA25

-FL10

-RN10

-CP10

-AA25-QN10

-AA25-BT7

-AA25-BT6

-BT25

-EB1

-CP5

-GP10

-KA1

-BT71

-EB1

-AA25

-GP13

-CP6

-BT64

-EQ1-QN12

-EQ1

-BT50

NOTE

NIBE does not supply all components in thisoutline diagram.

This installations alternative is suitable for more com-plex installations with a focus on comfort.

SMO 20 (AA25) starts and stops the heat pump (EB101)to meet the heat and hot water demand of the install-ation. At simultaneous heating and hot water demandthe reversing valve switches (AA25-QN10) periodicallybetween the climate system and the water heater/ac-cumulator tank (CP10). When the hot water heater/ac-cumulator tank is fully charged (CP10), the reversingvalve switches (AA25-QN10) to the climate system.

Additional heat (EB1) is connected automatically whenthe energy demand exceeds the heat pump capacity.Immersion heater (EB20) in the water heater/accumu-lator tank (CP10) is used during the time to producehot water if the heat pump (EB101) is used for heatingthe building at the same time.

The immersion heater (EB20) can also be used if ahigher temperature of hot water is required than theheat pump can produce.

During cooling operation (requires compatible heatpump) the reversing valve (EQ1-QN12) switches to thecooling system (EQ1). If several simultaneous demandsoccur while there is a cooling demand the installationreacts differently. In event of a hot water demand thereversing valve (EQ1-QN12) switches back and hotwater is produced until the demand is fulfilled. In eventof a heating demand the reversing valve (EQ1-QN12)instead switches periodically between the demands. Ifthe cooling demand is met, the reversing valve switchesback to basic mode (heat/hot water).

SMO 20Chapter 4 | Pipe connections12

General■ Disconnect SMO 20 before insulation testing the

house wiring.■ If the building is equipped with an earth-fault

breaker, SMO 20 should be equipped with a separateone.

■ SMO 20 must be installed via an isolator switch witha minimum breaking gap of 3mm.

■ For the electrical wiring diagram for the controlmodule, see page 50.

■ Communication and sensor cables to external con-nections must not be laid close to high current cables.

■ The minimum area of communication and sensorcables to external connections must be 0.5 mm² upto 50 m, for example EKKX or LiYY or equivalent.

■ Use a screened three core cable for communicationwith the heat pump.

■ When cable routing in SMO 20, cable grommets (UB1and UB2, marked in image) must be used.

NOTE

The switch (SF1) must not be moved to "" or" " until the boiler in the system has beenfilled with water. The compressor in the heatpump and any external addition can be dam-aged.

NOTE

Electrical installation and service must be car-ried out under the supervision of a qualifiedelectrician. Cut the current with the circuitbreaker before carrying out any servicing.Electrical installation and wiring must be car-ried out in accordance with the stipulations inforce.

When installing SMO 20, NIBE's air/water heatpump and any addition must be current free.

NOTE

See outline diagram for your system for phys-ical location of the temperature sensor that isto be installed.

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SF1

FA1

UB2UB1

Miniature circuit-breakerThe control module operating circuit and parts of itsinternal components are internally fused by a miniaturecircuit-breaker (FA1).

13Chapter 5 | Electrical connectionsSMO 20

5 Electrical connections

Accessibility, electrical connectionThe cover of the control module is opened using a Torx25 driver. Assembly takes place in reverse order.

3

1

2

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NOTE

The cover to access the base card is openedusing a Torx 25 screwdriver.3

1

2

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The display may need to be moved for easier accesswhen connecting electrics. This is easily done by follow-ing these steps.1.

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b

a

Press in the catch on the upper rear side of thedisplay unit towards you (a) and move the displayunit upwards (b) so that the mountings unhookfrom the panel.

2.

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b

a

Lift the display unit from its mountings.3.

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b

a

Align the two lower mountings on the reverse ofthe display unit with the two upper holes in thepanel as illustrated.

SMO 20Chapter 5 | Electrical connections14

4.

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b

a

Secure the display on the panel.5. When the electrical connection is ready the display

must be reinstalled with three mounting pointsagain, otherwise the front cover cannot be in-stalled.

Cable lockUse a suitable tool to release/lock cables in the heatpump terminal blocks.

Terminal block on the electrical card

LE

K

1

1

2

2

3

3

1

2

3

3

4

1

2LE

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1

1

2

2

3

3

1

2

3

3

4

1

2

1

2

Terminal block

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1 mm

3,5 mm

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1 mm

3,5 mm


ConnectionsNOTE

To prevent interference, unscreened commu-nication and/or sensor cables to external con-nections must not be laid closer than 20 cmfrom high voltage cables.

Power connectionSMO 20 must be installed via an isolator switch with aminimum breaking gap of 3mm. Minimum cable areamust be sized according to the fuse rating used.

1NL

X1

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Tariff controlIf the voltage to the compressor in the heat pump dis-appears for a certain period, simultaneous blocking ofthese must take place via software controlled input(AUX input) to avoid alarm, see page 21.

Connecting the charge pump for the heatpumpConnect circulation pump (EB101-GP12) as illustratedto terminal block X4:5 (PE), X4:6 (N) and X4:7 (230 V)on the base board (AA2).

Control signal for (EB101-GP12) is connected to termin-al block X2:1 (PWM) and X2:2 (GND) as illustrated.

987654

SMO

Externt

PE LN

External

SMO 20

AA2-X4

EB101-GP12

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4

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ExterntExternal

SMO 20

X2

EB101-GP12

PWM

GND

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Communication with heat pumpConnect the heat pump (EB101) with a screened threecore cable to terminal block X2:19 (A), X2:20 (B) andX2:21 (GND) as illustrated.

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B

GND

A

B

GND

A

B

GND

SMO

F2015/F2020/F2025/F2300

F2016/F2026

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31

A

B

GND

F2030

54

23

1

A

B

GND

A

B

GND

F2040

19

20

21

18

X2

SMO 20

AA21-J2

X5

X5

AA23-X4

Outside sensorInstall the outside temperature sensor (BT1) in theshade on a wall facing north or north-west, so it is un-affected by the morning sun.

Connect the sensor to terminal block X2:3 and X2:6.Use a twin core cable of at least 0.5 mm² cable area.

If a conduit is used it must be sealed to prevent con-densation in the sensor capsule.

SMO Externt

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ExternalSMO 20

X2

BT1

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Temperature sensor, hot water chargingThe temperature sensor, hot water charging (BT6) isplaced in the submerged tube on the water heater.


Hot water charging is activated in menu 5.2 or in thestart guide.

SMO Externt

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ExternalSMO 20

X2

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Temperature sensor, hot water topA temperature sensor for hot water top (BT7) can beconnected to SMO 20 to show the water temperatureat the top of the tank (if it is possible to install a sensorat the top of the tank).


SMO Externt

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ExternalSMO 20

X2

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Temperature sensor, external flow lineConnect temperature sensor, external supply (BT25)(required for additional heat after reversing valve(QN10)), to terminal block X2:8 and X2:10. Use a twocore cable with a minimum 0.5 mm² cable area.

SMO Externt

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ExternalSMO 20

X2

BT25LEK

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Temperature sensor, external supply at addi-tional heat before reversing valve (QN10)Connect temperature sensor, external supply afterelectric heater (BT63) (required for additional heat be-fore reversing valve for hot water charging (QN10)), toterminal block X2:9 and X2:10. Use a two core cablewith a minimum 0.5 mm² cable area.

SMO Externt

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NOTE

For docking that requires connection of othersensors. See "Possible selection for AUX inputs"on page 21.


Optional connectionsRoom sensorSMO 20 can be supplemented with a room sensor(BT50). The room temperature sensor has up to threefunctions:1. Show current room temperature in the control

module display.2. Option of changing the room temperature in °C.3. Makes it possible to change/stabilise the room

temperature.

Install the sensor in a neutral position where the settemperature is required. A suitable location is on a freeinner wall in a hall approx. 1.5 m above the floor. It isimportant that the sensor is not obstructed frommeasuring the correct room temperature by beinglocated, for example, in a recess, between shelves, be-hind a curtain, above or close to a heat source, in adraft from an external door or in direct sunlight. Closedradiator thermostats can also cause problems.

The control module operates without the sensor, butif one wishes to read off the accommodation's indoortemperature in SMO 20 display the sensor must be in-stalled. Connect the room sensor to terminal block X2:7and X2:10.

If the sensor is to be used to change the room temper-ature in °C and/or to change/stabilise the room tem-perature, the sensor must be activated in menu 1.9.4.

If the room sensor is used in a room with underfloorheating, it should only have an indicatory function, notcontrol of the room temperature.

SMO Externt

9

10

11

6

8

7

ExternalSMO 20

X2

BT50LEK

L N 1 1 0 2 3 4PE

21

20

19

18

17

16

15

14

13

12

11

10

98

76

54

32

1

X2

5

6

7

2

1

8

9

13

12

4

3

11

10

19

20

21

14

18

16

17

15

Caution

Changes of temperature in accommodationtake time. For example, short time periods incombination with underfloor heating will notgive a noticeable difference in room temperat-ure.

Step controlled additional heat

NOTE

Mark up any junction boxes with warnings forexternal voltage.

External step controlled additional heat can be con-trolled by up to three potential-free relays in the controlmodule (3 step linear or 7 step binary). Alternativelytwo relays (2 step linear or 3 step binary) can be usedfor step controlled additional heat, which means thatthe third relay can be used to control the immersionheater in the water heater/accumulator tank.

Step in occurs with at least 1 minute intervals and stepouts with at least 3 seconds intervals.

Step 1 is connected to terminal block X2:2 on the addi-tional relay board (AA7).

Step 2 is connected to terminal block X2:4 on the addi-tional relay board (AA7).

Step 3 or immersion heater in the water heater/accu-mulator tank is connected to terminal block X2:6 onthe additional relay board (AA7).

The settings for step controlled additional heat aremade in menu 4.9.3 and menu 5.1.12.

All additional heat can be blocked by connecting apotential-free switch function to the software con-trolled input on terminal block X2 (see page 21) whichis selected in menu 5.4.

SMO

Externt

654321

1 0 PE

A1

A2

A1

A2

A1

-K1 -K2 -K3

A2

External

SMO 20

AA7-X2X1

LEK

L N 1 1 0 2 3 4PE

X1

1 1NL 0 432PE

-X2

1

123456

2 3 4 5 6

-X1

AA7-X2

If the relays are to be used for control voltage, bridgethe supply from terminal block X1:1 toX2:1, X2:3 andX2:5 on additional relay board (AA7). Connect theneutral from the external additional heat to terminalblock X1:0.

With step controlled additional heat before thereversing valve

The electric additional heat will charge with the max-imum permitted immersion heater output togetherwith the compressor to conclude the hot water char-ging and return to charging the heating as soon aspossible. This only occurs when the number of degreeminutes is below the start value for the additional heat.


Relay output for emergency mode

NOTE


When the switch (SF1) is in " " mode (emergencymode) the circulation pump is activated (EB101-GP12).

Caution

No hot water is produced when emergencymode is activated.

The emergency mode relay can be used to activateexternal additional heat, an external thermostat mustthen be connected to the control circuit to control thetemperature. Ensure that the heating medium circu-lates through the external additional heating.

432PE

SMO

Externt

X1

ExternalSMO 20

LEK

L N 1 1 0 2 3 4PE

21

20

19

18

17

16

15

14

13

12

11

10

98

76

54

32

1

X1

1 1NL 0 432PE

1 0 432PE

SMO

Externt

N L

X1

External

SMO 20

LEK

L N 1 1 0 2 3 4PE

21

20

19

18

17

16

15

14

13

12

11

10

98

76

54

32

1

X1

1 1NL 0 432PE

If the relay is to be used for control voltage, bridge thesupply from terminal block X1:1 to X1:2 and connectneutral and control voltage from the external additionalheat to X1:0 (N) and X1:4 (L).

External circulation pumpConnect the external circulation pump (GP10) as illus-trated to terminal block X4:9 (PE), X4:10 (N) and X4:11(230 V) on the base board (AA2).

1312111098

SMO

Externt

PE LN

External

SMO 20

AA2-X4

GP10

LEK

L N 1 1 0 2 3 4PE

AA2-X4

Shuttle valveSMO 20 can be supplemented with an external revers-ing valve (QN10) for hot water control (see page 46for accessory).

Hot water production can be selected in menu 5.2.4.

Connect the external reversing valve (QN10) as illus-trated to terminal block X4:2 (N), X4:3 (control) andX4:4 (L) on the base board (AA2).

654321

SMO

Externt

N L

External

SMO 20

QN10

AA2-X4

LEK

L N 1 1 0 2 3 4PE

AA2-X4

NIBE Uplink™Connect the network connected cable (straight, Cat.5eUTP) with RJ45-contact (male) to contact AA4-X9 onthe display unit (as illustrated). Use the cable grommet(UB2) in the control module for cable routing.

LEK

AA4-X9


External connection optionsOn terminal block X2, SMO 20 has software controlledinputs and outputs for connection of sensors and ex-ternal switch function. This means that a sensor or anexternal switch function can be connected to one ofsix special connections where the function for connec-tion is decided in the control module software.

Caution

If an external contact function is connected toSMO 20, the function for use input or outputmust be selected in menu 5.4.

Selectable inputs terminal block X2 for these functionsare AUX1 (X2:11), AUX2 (X2:12), AUX3 (X2:13), AUX4(X2:15), AUX5 (X2:16) andAUX6 (X2:17). Earth is con-nected to terminal block X2:14 respectively X2:18 (seeelectrical wiring diagram for more information).

Selectable output is terminal block X4:15-17 on basecard (AA2.

block heating

activate temp lux

not used

soft in/outputs5.4

not used

not used

not used

B

SMO Externt

13

14

15

10

12

11

A

ExternalSMO 20

X2

LEK

L N 1 1 0 2 3 4PE

21

20

19

18

17

16

15

14

13

12

11

10

98

76

54

32

1

X2

5

6

7

2

1

8

9

13

12

4

3

11

10

19

20

21

14

18

16

17

15

The example above uses the inputs AUX1 (X2:11) and AUX3(X2:13) on terminal block (X2).

Caution

Some of the following functions can also beactivated and scheduled via menu settings.

Possible selection for AUX inputsFollowing functions can be connected to the AUX in-puts on terminal block X2.

These functions are then selected in menu 5.4. Use a2 core cable of at least 0.5 mm2 cable area.■ Temperature sensor, cooling/heating

If a particular room will determine how the wholeinstallation will work, a room sensor ((BT74) is used.If room sensor (BT74) is connected to SMO 20, room

sensor (BT74) determines when it is time to switchbetween cooling and heating operation for thewhole installation.

The alternative only applies if accessories for coolingare present or if the heat pump has the integratedcooling function.

■ Temperature sensor, external return line

If temperature sensor, external return line (BT71)needs to be used, connect it to selected input (menu5.4, see page 38) on terminal block X2. Use a 2 corecable of at least 0.5 mm2 cable area.

■ Temperature sensor, flow line cooling

In cases where the active cooling 4 pipe systemfunction is used on the AUX output, a temperaturesensor supply line cooling (BT64) must be connectedto SMO 20. The alternative is only shown if the cool-ing function in the heat pump has been activated.

■ Contact for external tariff blocking

In cases where external tariff blocking is required itmust be connected to terminal block X2.

Tariff blocking means that the additional heat, thecompressor, heating and cooling are disconnectedby connecting a potential free switch function to theinput selected in menu 5.4.

A closed contact results in the electrical output beingdisconnected.

■ Switch for "SG ready"

NOTE

This function can only be used in mains net-works that support the "SG Ready"-standard.

"SG Ready" requires two AUX inputs.

In cases where this function is required it must beconnected to terminal block X2.

"SG Ready" is a smart form of tariff control where yourelectricity supplier can affect the indoor and hot watertemperatures or simply block the additional heatand/or the compressor in the heat pump at certaintimes of the day (can be selected in menu 4.1.5 afterthe function is activated). Activate the function byconnecting potential-free switch functions to two in-puts selected in menu 5.4 (SG Ready A and SG Ready B),see page 38.

Closed or open switch means one of the following:


■ Blocking (A: Closed, B: Open)

"SG Ready" is active. The compressor in the heatpump and additional heat is blocked like the day'stariff blocking.

■ Normal mode (A: Open, B: Open)

"SG Ready" is not active. No effect on the system.■ Low price mode (A: Open, B: Closed)

"SG Ready" is active. The system focuses on costssavings and can for example exploit a low tariff fromthe electricity supplier or over-capacity from any ownpower source (effect on the system can be adjustedin the menu 4.1.5).

■ Overcapacity mode (A: Closed, B: Closed)

"SG Ready" is active. The system is permitted to runat full capacity at over capacity (very low price) withthe electricity supplier (effect on the system is set-table in menu 4.1.5).

(A = SG Ready A and B = SG Ready B )■ Contact for activation of “temporary lux"

An external switch function can be connected toSMO 20 for activation of the hot water function"temporary lux". The switch must be potential freeand connected to the selected input (menu 5.4) onterminal block X2.

"temporary lux" is activated for the time that thecontact is connected.

■ Contact for activation of “external adjustment"

An external contact function can be connected toSMO 20 to change the supply temperature and theroom temperature.

When the switch is closed the temperature changesin °C (if the room sensor is connected and activated).If a room sensor is not connected or activated, thedesired change of "temperature" (heating curve off-set) with the number of steps selected is set. Thevalue is adjustable between -10 and +10.■ climate system 1

The switch must be potential-free and connectedto the selected input (menu 5.4) on terminal blockX2.

The value for the change is set in menu 1.9.2, "ex-ternal adjustment".

■ Switch for external alarm

Alarms from external devices can be connected tothe control and appear as an info alarm. Potential-free signal of NO or NC type can be connected.

Switch for external blocking of

In those cases where external blocking of the functionis desired, this can be connected to terminal block X2.

The function is disconnected by connecting a potential-free switch function to the input selected in menu 5.4.

A closed contact results in the function being discon-nected.

Functions that can be blocked:■ addition■ compressor in heat pump EB101■ heating■ cooling■ hot water


Possible selection for AUXoutput (potentialfree variable relay)It is possible to have an external connection throughthe relay function via a potential-free variable relay(max 2 A at resistive load) on terminal block X4:15-17on the base board (AA2).

Optional functions for external connection:■ Indication of buzzer alarm. The function gives signals

whilst a constant alarm is indicated by the controlmodule.

■ Cooling mode indication. This option requires activa-tion of some form of cooling function. The functiongives signals when the system permits cooling andcan be used to control external pumps for example.

■ Active cooling (4 pipe) This option requires activationof some form of cooling function and can be usedfor simple 4-pipe systems (an outdoor unit). Thefunction gives signals when a connected heat pumpproduces cooling and there are no other demandsand cooling is permitted. This function can be usedto control reversing valve for cooling EP25-QN12.

Caution

With this option, the charge pump (GP12)is always controlled in "auto" operatingmode, which means that the pump is run-ning when the reversing valve (QN12) is to-wards the cooling system.

■ External heating medium pump. The function givessignals when an external circulation pump (GP10) isto be operated according to settings for the operat-ing mode.

■ Control of circulation pump for hot water circulation.The function gives signals when a circulation pumpfor hot water circulation (GP11) is to be operatedaccording to settings in menu "hot water recirc."(2.9.2).

If any of the above is installed to terminal block X4:15-17 on base board (AA2) the function must be selectedin menu 5.4

The common alarm is preselected at the factory.

17161514

SMO

ExterntExternal

SMO 20

AA2-X4

LEK

L N 1 1 0 2 3 4PE

AA2-X4

The picture shows the relay in the alarm position.

When switch (SF1) is in the " " or " " position therelay is in the alarm position.

Hot water circulation pump or external heating medi-um pump connected to the buzzer alarm relay as illus-trated below.

NOTE


17161514

SMO

Externt

L

L

N

N

PEPE

External

SMO 20

AA2-X4

LEK

L N 1 1 0 2 3 4PE

AA2-X4

Reversing valve for cooling connected to the buzzeralarm relay as illustrated below.

17161514

SMO

Externt

L

L

N

N

External

SMO 20

AA2-X4

LEK

L N 1 1 0 2 3 4PE

AA2-X4

Caution

The relay outputs can have a max load of 2 Aat resistive load (230V AC).

Connecting accessoriesInstructions for connecting other accessories are in theinstallation instructions provided. See page 46 for thelist of the accessories that can be used with SMO 20.


Preparations■ Compatible NIBE air/water heat pump must be

equipped with a control card that has at least thesoftware version as listed on page 9. The controlcard version is displayed in the heat pump's display(if applicable) upon start-up.

■ SMO 20 must be ready-connected.■ The climate system must be filled with water and

bled.

Commissioning with NIBEair/water heat pumpNIBE F2015/F2020/F2025■ Follow the instructions in the heat pump's Installation

and Maintenance under section "Commissioning andadjustment" – "Start-up and inspection".

NIBE F2016/F2026/F2030/F2040/F2300■ Follow the instructions in the heat pump's Installation

manual under section "Commissioning and adjust-ment" – "Start-up and inspection".

SMO 201. Power the heat pump.2. Power SMO 20.3. Follow the start guide in the display on SMO 20

alternatively start the start guide in menu 5.7.

Commissioning with additional heating onlyAt first start follow the start guide, otherwise follow the list below.

1. Go to menu 4.2 op. mode.2. Mark ”add. heat only” using the control knob and

then press the OK button.3. Return to the main menus by pressing the Back

button.

Caution

When commissioning without NIBE air/waterheat pump an alarm communication error mayappear in the display.

The alarm is reset if the relevant heat pump isdeactivated in menu 5.2.2 ("installed heatpump").

Check the reversing valve1. Activate "AA2-K1 (QN10)" in menu 5.6.2. Check that the reversing valve opens or is open for

hot water charging.3. Deactivate "AA2-K1 (QN10)" in menu 5.6.

Check AUX socketTo check any function connected to the AUX socket1. Activate "AA2-X4" in menu 5.6.2. Check the desired function.3. Deactivate "AA2-X4" in menu 5.6.

Cooling modeIf the installation contains a NIBE air/water heat pumpthat can produce cooling (for example NIBE F2040)cooling can be permitted in menu 5.11.1.1.

You can now select cooling mode indication in menu5.4 for AUX output.

SMO 20Chapter 6 | Commissioning and adjusting24

6 Commissioning and adjusting

Start guideNOTE

There must be water in the climate systembefore the switch is set to " ".

1. Set the control module's switch () to "".2. Follow the instructions in the start guide in the

control module display. If the start guide does notstart when you start the control module, start itmanually in menu 5.7.

TIP

See page 29 for a more in-depth introductionto the installation’s control system (operation,menus etc.).

CommissioningThe first time the installation is started a start guide isstarted. The start guide instructions state what needsto carried out at the first start together with a runthrough of the installation’s basic settings.

The start guide ensures that the start-up is carried outcorrectly and cannot be bypassed. The start guide canbe started later in menu 5.7.

This applies to a heat pump with approximately 4 kWrated output.

For a 15 kW heat pump the corresponding flow is from0.09 l/s (324 l/h) to 0.14 l/s (504 l/h).

During the start-up guide, the reversing valves and theshunt are run back and forth to help vent the heatpump.

Caution

As long as the start guide is active, no functionin the heat pump will start automatically.

The guide will appear at each heat pump re-start until it is deselected on the last page.

Operation in the start guide

language4.6

If the start guide is left on this page it closesautomatically in

60 min

A.Page

C. Option / setting

B. Name and menu number

A. Page

Here you can see how far you have come in the startguide.

Scroll between the pages of the start guide as follows:1. Turn the control knob until one of the arrows in

the top left corner (at the page number) has beenmarked.

2. Press the OK button to skip between the pages inthe start guide.

B. Name and menu number

Read what menu in the control system this page of thestart guide is based on. The digits in brackets refer tothe menu number in the control system.

If you want to read more about affected menus eitherconsult the help menu or read the user manual.

C. Option / setting

Make settings for the system here.

D. Help menu

In many menus there is a symbol that indicatesthat extra help is available.

To access the help text:1. Use the control knob to select the help symbol.2. Press the OK button.

The help text often consists of several windows thatyou can scroll between using the control knob.

25Chapter 6 | Commissioning and adjustingSMO 20

Setting the cooling/heatingcurve

heating curve 1.9.1.1system

outdoor temp. °C

flow temperature °C

cooling curve 1.9.1.2

system

outdoor temp. °C

flow temperature °C

heating curveSetting range: 0 - 15

Default value: 9

cooling curve (accessory required)Setting range: 0 - 9

Default value: 0

The prescribed heating curve for your house can beviewed in the menu heating curve . The task of theheating curve is to give an even indoor temperature,regardless of the outdoor temperature, and therebyenergy efficient operation. It is from this heating curvethat the control module's control computer determinesthe temperature of the water to the heating system,supply temperature, and therefore the indoor temper-ature. Select the heating curve and read off how thesupply temperature changes at different outdoortemperatures here. If there is access to cooling the samesettings can be made for the cooling curve.

Curve coefficientThe slopes of the heating /cooling curves indicate howmany degrees the supply temperature is to be in-creased/reduced when the outdoor temperaturedrops/increases. A steeper slope means a higher supplytemperature for heating or a lower supply temperaturefor cooling at a certain outdoor temperature.

30

40

50

60

70

°C

FR

AM

LE

DN

ING

ST

EM

PE

RA

TU

R

- 40°C

UTETEMPERATUR

- 10010 - 20 - 30

Brantare kurvlutning

Supply temperature

Outdoor temperature

Steeper curve slope

The optimum slope depends on the climate conditionsin your location, if the house has radiators or underfloor heating and how well insulated the house is.

The curve is set when the heating installation is in-stalled, but may need adjusting later. Normally, thecurve will not need further adjustment.

Caution

In the event of making fine adjustments of theindoor temperature, the curve must be offsetup or down instead, this is done in menu 1.1temperature .

Curve offsetAn offset of the curve means that the supply temperat-ure changes as much for all the outdoor temperatures,e.g. that a curve offset of +2 steps increases the supplytemperature by 5 C at all outdoor temperatures.

Flow line temperature– maximum andmin-imum valuesBecause the flow line temperature cannot be calculatedhigher than the set maximum value or lower than theset minimum value the heating curve flattens out atthese temperatures.

Caution

Underfloor heating systems are normally maxflow line temperature set between 35 and 45°C.

Must be restricted with underfloor coolingmin. flow line temp. to prevent condensation.

Check the max temperature for your floor withyour installer/floor supplier.

The figure at the end of the curve indicates the curveslope. The figure beside the thermometer gives thecurve offset. Use the control knob to set a new value.Confirm the new setting by pressing the OK button.

Curve 0 is an own curve created in menu 1.9.7.

To select another curve (slope):1. Press the OK button to access the setting mode2. Select a new curve. The curves are numbered from

0 to 15, the greater the number, the steeper theslope and the greater the supply temperature.Curve 0 means that own curve (menu 1.9.7) isused.

3. Press the OK button to exit the setting.


To read off a curve:1. Turn the control knob so that the ring on the shaft

with the outdoor temperature is marked.2. Press the OK button.3. Follow the grey line up to the curve and out to the

left to read off the value for the supply temperatureat the selected outdoor temperature.

4. You can now select to take read outs for differentoutdoor temperatures by turning the control knobto the right or left and read off the correspondingflow temperature.

5. Press the OK or Back button to exit read off mode.

TIP

Wait 24 hours before making a new setting,so that the room temperature has time tostabilise.

If it is cold outdoors and the room temperatureis too low, increase the curve slope by one in-crement.

If it is cold outdoors and the room temperatureis too high, lower the curve slope by one incre-ment.

If it is warm outdoors and the room temperat-ure is too low, increase the curve offset by oneincrement.

If it is warm outdoors and the room temperat-ure is too high, lower the curve offset by oneincrement.

27Chapter 6 | Commissioning and adjustingSMO 20

Setting hot water circulationhot water recirc.

operating timeSetting range: 1 - 60 min

Default value: 60 min

downtimeSetting range: 0 - 60 min

Default value: 0 min

Set the hot water circulation for up to three periodsper day here. During the set periods the hot water cir-culation pump will run according to the settings above.

"operating time" decide how long the hot water circu-lation pump must run per operating instance.

"downtime" decide how long the hot water circulationpump must be stationary between operating instances.

Hot water circulation is activated in menu 5.4 "soft in-puts and outputs".

SG ReadySG ReadyThis function can only be used in mains networks thatsupport the "SG Ready"-standard .

Make settings for the function "SG Ready" here.

Low price mode means that the electricity supplier hasa low tariff and the system uses this to reduce costs.

Over capacity mode means that the electricity supplierhas set the tariff very low and the system uses this toreduce the costs as much as possible.

affect room temperature

Here you set whether room temperature should beaffected when activating "SG Ready".

With low price mode of "SG Ready" the parallel offsetof the indoor temperature is increased by "+1". If aroom sensor is installed and activated, the desired roomtemperature increases by 1 °C.

With over capacity mode of "SG Ready" the paralleloffset for the indoor temperature is increased by"+2".If a room sensor is installed and activated, the desiredroom temperature increases by 2 °C.

affect hot water

Here you set whether the temperature of the hot watershould be affected when activating "SG Ready".

With low price mode on "SG Ready" the stop temper-ature of the hot water is set as high as possible at onlycompressor operation (immersion heater not permit-ted).

With over capacity mode of "SG Ready" the hot wateris set to "luxury" (immersion heater permitted).

affect cooling (accessory required)

Here you set whether room temperature during coolingoperation should be affected when activating "SGReady".

With low price mode of "SG Ready" and cooling oper-ation the indoor temperature is not affected.

With over capacity mode of "SG Ready" and coolingoperation the parallel offset for the indoor temperatureis reduced by"-1". If a room sensor is installed and ac-tivated, the desired room temperature decreases by 1°C.

NOTE

The function must be connected to two AUXinputs and activated in menu 5.4.


Display unit

A

B

C

D

E

F

Display

Status lamp

OK button

Back button

Control knob

Switch

INDOOR CLIMATE

HOT WATER

INFO

HEAT PUMP

SMO 20 G USB port

DisplayInstructions, settings and operational informa-tion are shown on the display. The easy-to-readdisplay and menu system, facilitates navigationbetween the different menus and options toset the comfort or obtain the information yourequire.

A

Status lampThe status lamp indicates the status of thecontrol module. It:■ lights green during normal operation.■ lights yellow in emergency mode.■ lights red in the event of a deployed alarm.

B

OK buttonThe OK button is used to:■ confirm selections of sub menus/options/set

values/page in the start guide.

C

Back buttonThe back button is used to:■ go back to the previous menu.■ change a setting that has not been con-

firmed.

D

Control knobThe control knob can be turned to the right orleft. You can:■ scroll in menus and between options.■ increase and decrease the values.■ change page in multiple page instructions

(for example help text and service info).

E

Switch (SF1)The switch assumes three positions:■ On ()■ Standby ( )■ Emergency mode ( )

Emergency mode must only be used in theevent of a fault on the control module. In thismode, the compressor in the heat pumpswitches off and the immersion heater engages.The control module display is not illuminatedand the status lamp illuminates yellow.

F

USB portThe USB port is hidden beneath the plasticbadge with the product name on it.

The USB port is used to update the software.

Visit http://www.nibeuplink.com and click the"Software" tab to download the latest softwarefor your installation.

G

29Chapter 7 | Control - IntroductionSMO 20

7 Control - Introduction

Menu system

INDOOR CLIMATE

HOT WATER

INFO

HEAT PUMP

SERVICE

Indoor temperature -(if room sensors areinstalled)

Hot water temp.

Temporary lux (ifactivated)

Outdoortemperature

Estimated amount ofhot water

Menu 1 - INDOOR CLIMATESetting and scheduling the indoor climate. See inform-ation in the help menu or user manual.

Menu 2 - HOT WATERSetting and scheduling hot water production. See in-formation in the help menu or user manual.

This menu only appears if a water heater is installed inthe system.

Menu 3 - INFODisplay of temperature and other operating informa-tion and access to the alarm log. See information inthe help menu or user manual.

Menu 4 - MY SYSTEMSetting time, date, language, display, operating modeetc. See information in the help menu or user manual.

Menu 5 - SERVICEAdvanced settings. These settings are not available tothe end user. The menu is made visible by pressing theBack button for 7 seconds when in the start menu. Seepage 36.

Symbols in the displayThe following symbols can appear in the display duringoperation.

DescriptionSymbol

This symbol appears by the informationsign if there is information in menu 3.1that you should note.

These two symbols indicate whether thecompressor in the outdoor unit or addi-tional heat in the installation is blockedvia SMO 20.

These can, for example, be blocked de-pending on which operating mode is se-lected in menu 4.2, if blocking is sched-uled in menu 4.9.5 or if an alarm has oc-curred that blocks one of them.

Blocking the compressor.

Blocking additional heat.

This symbol appears if periodic increaseor lux mode for the hot water is activated.

This symbol indicates whether "holidaysetting" is active in 4.7.

This symbol indicates whether SMO 20has contact with NIBE Uplink™.

This symbol indicates whether cooling isactive.

Heat pump with cooling function re-quired.

SMO 20Chapter 7 | Control - Introduction30

INDOOR CLIMATE

HOT WATER

INFO

HEAT PUMP

temperature

INDOOR CLIMATE 1

advanced

scheduling off

Marked mainmenu

Menu number – marked sub menu Name and menu number – main menu

Symbol –main menu

Status information – submenus

Name – sub menusSymbols – sub menus

OperationTo move the cursor, turn the control knobto the left or the right. The marked positionis brighter and/or has a light frame.

Selecting menuTo advance in the menu system select a main menu bymarking it and then pressing the OK button. A newwindow then opens with sub menus.

Select one of the sub menus by marking it and thenpressing the OK button.

Selecting options

economy

comfort mode2.2

normal

luxury

Alternative

In an options menu the current selected option isindicated by a green tick.

To select another option:1. Mark the applicable option. One of the options

is pre-selected (white).2. Press the OK button to confirm the selected

option. The selected option has a green tick.

Setting a value

time & date4.4time

day

year

month

24 h

12 h

date

Values to be changed

To set a value:1. Mark the value you want to set using the

control knob.2. Press the OK button. The background of the

value becomes green, which means that youhave accessed the setting mode.

3. Turn the control knob to the right to increasethe value and to the left to reduce the value.

4. Press the OK button to confirm the value youhave set. To change and return to the originalvalue, press the Back button.

31Chapter 7 | Control - IntroductionSMO 20

Use the virtual keyboard

Different keyboards

In some menus where text may require entering, a vir-tual keyboard is available.

Depending on the menu, you can gain access to differ-ent character sets which you can select using the con-trol knob. To change character table, press the Backbutton. If a menu only has one character set the key-board is displayed directly.

When you have finished writing, mark "OK" and pressthe OK button.

Scroll through the windowsA menu can consist of several windows. Turn the con-trol knob to scroll between the windows.

Current menuwindow

Number of windowsin the menu

Scroll through the windows in the start guide

language4.6

If the start guide is left on this page it closesautomatically in

60 min

Arrows to scroll through window in start guide

1. Turn the control knob until one of the arrows inthe top left corner (at the page number) has beenmarked.

2. Press the OK button to skip between the steps inthe start guide.

Help menuIn many menus there is a symbol that indicatesthat extra help is available.

To access the help text:1. Use the control knob to select the help symbol.2. Press the OK button.

The help text often consists of several windows thatyou can scroll between using the control knob.

SMO 20Chapter 7 | Control - Introduction32

Menu 1 - INDOOR CLIMATE1.1.1 - heating1.1 - temperature1 - INDOOR CLIMATE

1.1.2 - cooling *

1.3.1 - heating1.3 - scheduling

1.3.2 - cooling *

1.9.1.1 heating curve1.9.1 - curve1.9 - advanced

1.9.1.2 - cooling curve *

1.9.2 - external adjustment

1.9.3.1 - heating1.9.3 - min. flow line temp.

1.9.3.2 - cooling *

1.9.4 - room sensor settings

1.9.5 - cooling settings *

1.9.7.1 - heating1.9.7 - own curve

1.9.7.2 - cooling *

1.9.8 - point offset

* Heat pump with cooling function required.

33Chapter 8 | ControlSMO 20

8 Control

Menu 2 - HOT WATER2.1 - temporary lux2 - HOT WATER

2.2 - comfort mode

2.3 - scheduling

2.9.1 - periodic increase2.9 - advanced

2.9.2 - hot water recirc. *

Menu 3 - INFO3.1 - service info3 - INFO

3.2 - compressor info

3.3 - add. heat info

3.4 - alarm log

3.5 - indoor temp. log

* Accessories are needed.

SMO 20Chapter 8 | Control34

Menu 4 - MY SYSTEM4.1.3.1 - nibe uplink4.1.3 - internet4.1 - plus functions4 - MY SYSTEM

4.1.3.8 - tcp/ip settings

4.1.3.9 - proxy settings

4.1.5 - SG Ready

4.1.6 - smart price adaption

4.2 - op. mode

4.3 - my icons

4.4 - time & date

4.6 - language

4.7 - holiday setting

4.9.1 - op. prioritisation4.9 - advanced

4.9.2 - auto mode setting

4.9.3 - degree minute setting

4.9.4 - factory setting user

4.9.5 - schedule blocking

4.9.6 - schedule silent mode


Menu 5 - SERVICEOverview

5.1.1 - hot water settings *5.1 - operating settings5 - SERVICE

5.1.2 - max flow line temperature

5.1.3 - max diff flow line temp.

5.1.4 - alarm actions

5.1.12 - addition

5.1.14 - flow set. climate system

5.1.22 - heat pump testing

5.1.23 - compressor curve

5.2.2 - installed heat pump5.2 - system settings

5.2.4 - accessories

5.4 - soft in/outputs

5.5 - factory setting service

5.6 - forced control

5.7 - start guide

5.8 - quick start

5.9 - floor drying function

5.10 - change log

5.11.1.1 - heat pump5.11 -heat pump settings

5.11.1.2 - charge pump(GP12)

5.12 - country

* Accessory needed.

Go to the main menu and hold the Back button in for7 seconds to access the Service menu.

Sub-menus

Menu SERVICE has orange text and is intended forthe advanced user. This menu has several sub-menus.Status information for the relevant menu can be foundon the display to the right of the menus.

operating settings Operating settings for the controlmodule.

system settings System settings for the control mod-ule, activating accessories etc.

soft in/outputs Setting software controlled in andoutputs on the input card (AA3) and terminal block(X2).

factory setting service Total reset of all settings (includ-ing settings available to the user ) to default values.

forced control Forced control of the different compon-ents in the indoor module.

start guide Manual start of the start guide which isrun the first time when the control module is started.

quick start Quick starting the compressor.

NOTE

Incorrect settings in the service menus candamage the installation.

Menu 5.1 - operating settingsOperating settings can be made for the control modulein the sub menus.


Menu 5.1.1 - hot water settings

economySetting range start temp. economy: 5 – 55 °C

Factory setting start temp. economy: 42 °C

Setting range stop temp. economy: 5 – 60 °C

Factory setting stop temp. economy: 48 °C

normalSetting range start temp. normal: 5 – 60 °C

Factory setting start temp. normal: 46 °C

Setting range stop temp. normal: 5 – 65 °C

Factory setting stop temp. normal: 50 °C

luxurySetting range start temp. lux: 5 – 70 °C

Factory setting start temp. lux: 49 °C

Setting range stop temp. lux: 5 – 70 °C

Factory setting stop temp. lux: 53 °C

stop temp. per. increaseSetting range: 55 – 70 °C

Factory setting: 55 °C

charge methodSetting range: target temp, delta temp

Default value: delta temp

Here you set the start and stop temperature of the hotwater for the different comfort options in menu 2.2 aswell as the stop temperature for periodic increase inmenu 2.9.1.

The charge method for hot water mode is selectedhere. "delta temp" is recommended for heaters withcharge coil, "target temp" for heaters with domesticcoil.

Menu 5.1.2 - max flow line temperature

climate systemSetting range: 5-70 °C

Default value: 60 °C

Set the maximum supply temperature for the climatesystem here.

Caution

Underfloor heating systems are normally maxflow line temperature set between 35 and 45°C.

Check the max floor temperature with yourfloor supplier.

Menu 5.1.3 - max diff flow line temp.

max diff compressorSetting range: 1 – 25 °C


max diff additionSetting range: 1 – 24 °C


Here you set the maximum permitted differencebetween the calculated and actual supply temperatureduring compressor respectively add. heat mode. Maxdiff. additional heat can never exceed max diff. com-pressor

max diff compressor

When the current supply temperature deviates fromthe set value compared to that calculated, the heatpump is forced to stop irrespective of the degree-minute value.

If the current supply temperature exceeds the calcu-lated flow with set value, the degree minute value isset to 0. The compressor in the heat pump stops whenthere is only a heating demand.

max diff addition

If "addition” is selected and activated in menu 4.2 andthe present supply temp exceeds the calculated withset value, the additional heat is forced to stop.

Menu 5.1.4 - alarm actionsSelect how you want the control module to alert youthat there is an alarm in the display here. The differentalternatives are; the heat pump stops producing hotwater and/or reduces the room temperature.

Caution

If no alarm action is selected, it can result inhigher energy consumption in the event of analarm.

Menu 5.1.12 - addition

max stepSetting range (binary stepping deactivated): 0 – 3

Setting range (binary stepping activated): 0 – 7

Default value: 3

fuse sizeSetting range: 1 - 200 A

Factory setting: 16 A

Here you select whether the step controlled additionalheat is positioned before or after the reversing valvefor hot water charging (QN10). Step controlled addi-tional heat is for example an external electric boiler.


You can set the maximum number of permitted addi-tional heat steps, if there is internal additional heat inthe tank (only accessible if the additional heat is posi-tioned after QN10), whether binary stepping is to beused and the size of the fuse.

TIP

See the accessory installation instructions forfunction description.

Menu 5.1.14 - flow set. climate system

presettingsSetting range: radiator, floor heat., rad. + floor heat.,DOT °C

Default value: radiator

Setting range DOT: -40.0 – 20.0 °C

The factory setting of DOT value depends on thecountry that has been given for the product's loca-tion. The example below refers to Sweden.

Factory setting DOT: -20.0 °C

own settingSetting range dT at DOT: 0.0 – 25.0

Factory setting dT at DOT: 10.0

Setting range DOT: -40.0 – 20.0 °C

Factory setting DOT: -20.0 °C

The type of heating distribution system the heatingmedium pump works towards is set here.

dT at DOT is the difference in degrees between flowand return temperatures at dimensioned outdoortemperature.

Menu 5.1.22 - heat pump testing

NOTE

This menu is intended for testing SMO 20 ac-cording to different standards.

Use of this menu for other reasons may resultin your installation not functioning as inten-ded.

This menu contains several sub-menus, one for eachstandard.

Menu 5.1.23 - compressor curveSet whether the compressor in the heat pump shouldwork to a particular curve under specific requirementsor if it should work to predefined curves.

You set a curve for a demand (heat, hot water, coolingetc.) by unticking "auto", turning the control knob untila temperature is marked and pressing OK. You cannow set at what temperature max- respectively minfrequencies will occur.

This menu can consist of several windows (one for eachavailable demand), use the navigation arrows in thetop left corner to change between the windows.

NOTE

This menu is only displayed if SMO 20 is con-nected to a heat pump with inverter controlledcompressor.

Menu 5.2 - system settingsMake different system settings for your installationhere, e.g. activate the connected heat pump and whichaccessories are installed.

Menu 5.2.2 - installed heat pumpIf a heat pump is connected to the master installation,set it here.

Menu 5.2.4 - accessoriesSet which accessories are installed on the installationhere.

If the water heater is connected to SMO 20 hot watercharging must be activated here.

Menu 5.4 - soft in/outputsHere you can select the in/output on the input board(X2) the external contact function (page 21) must beconnected to.

Selectable inputs on terminal blocks AUX1-6 (X2:11-18 and output AA2-X4.

Menu 5.5 - factory setting serviceAll settings can be reset (including settings availableto the user) to default values here.

NOTE

When resetting, the start guide is displayedthe next time the control module is restarted.

Menu 5.6 - forced controlYou can force control the different components in thecontrol module and any connected accessories here.

Menu 5.7 - start guideWhen the control module is started for the first timethe start guide starts automatically. Start it manuallyhere.

See page 25 for more information about the startguide.


Menu 5.8 - quick startIt is possible to start the compressor from here.

Caution

There must be a heating or hot water demandto start the compressor.

Caution

Do not quick start the compressor too manytimes over a short period of time as this maydamage the compressor and its surroundingequipment.

Menu 5.9 - floor drying function

length of period 1 – 7Setting range: 0 – 30 days

Factory setting, period 1 – 3, 5 – 7: 2 days

Factory setting, period 4: 3 days

temp. period 1 – 7Setting range: 15 – 70 °C

Default value:20 °Ctemp. period 130 °Ctemp. period 240 °Ctemp. period 345 Ctemp. period 440 °Ctemp. period 530 °Ctemp. period 620 °Ctemp. period 7

Set the function for under floor drying here.

You can set up to seven period times with differentcalculated flow temperatures. If less than seven periodsare to be used, set the remaining period times to 0days.

Mark the active window to activate the underfloordrying function. A counter at the bottom shows thenumber of days the function has been active.

TIP

If operating mode "add. heat only" is to beused, select it in menu 4.2.

Menu 5.10 - change logRead off any previous changes to the control systemhere.

The date, time and ID no. (unique to certain settings)and the new set value is shown for every change.

NOTE

The change log is saved at restart and remainsunchanged after factory setting.

Menu 5.11 - heat pump settingsSettings for installed heat pump can be made in thesubmenus.

Menu 5.11.1.1 - heat pumpMake settings for the installed heat pump here. To seewhat settings you can make, see installation manualfor the heat pump.

Menu 5.11.1.2 - charge pump (GP12)

op. modeHeating/cooling

Setting range: auto / intermittent

Default value: auto

Set the operating mode for the charge pump here.

auto: The charge pump runs according to the currentoperating mode for SMO 20.

intermittent: The charge pump starts and stops 20seconds before and after the compressor in the heatpump.

speed during operationheating, hot water, cooling

Setting range: auto / manual

Default value: auto

Manual setting

Setting range: 1–100 %

Default values: 70 %

speed in wait modeSetting range: 1–100 %


max. allowed speedSetting range: 80–100 %


Set the speed at which the charge pump is to operatein the present operating mode. Select "auto" if thespeed of the charge pump is to be regulated automat-ically (factory setting) for optimal operation.

If "auto" is activated for heating operation, you canalso make the setting "max. allowed speed" which re-stricts the charge pump and does not allow it to run ata higher speed than the set value.

For manual operation of the charge pump deactivate"auto" for the current operating mode and set the valueto between 1 and 100 % (the previously set value for"max. allowed speed" no longer applies).

Speed in standbymode (only used if "auto" has beenselected for "Operating mode") means the chargepump operates at the set speed during the time whenthere is neither a need for compressor operation noradditional heat.


5.12 - countrySelect here where the product was installed. This allowsaccess to country specific settings in your product.

Language settings can be made regardless of this selec-tion.

NOTE

This option locks after 24 hours, restart of dis-play or program updating.


Service actionsNOTE

Servicing should only be carried out by personswith the necessary expertise.

When replacing components on SMO 20 onlyreplacement parts from NIBE may be used.

Emergency mode

NOTE

Switch (SF1) must not be put into mode "" orbefore the installation is filled with water.

The compressor in the heat pump can bedamaged.

Emergency mode is used in event of operational inter-ference and in conjunction with service. Hot water isnot produced in emergency mode.

Emergency mode is activated by setting switch (SF1)in mode " ". This means that:■ The status lamp illuminates yellow.■ The display is not lit and the control computer is not

connected.■ Hot water is not produced.■ The compressors are switched off. Charge pump

(EB101-GP12) is running.■ The heating medium pump is active.■ The emergency mode relay (K1) is active.

External additional heat is active if it is connected tothe emergency mode relay (K1, terminal block X1).Ensure that the heating medium circulates through theexternal additional heat.

Temperature sensor data

Voltage (VDC)Resistance(kOhm)

Temperature(°C)

3.256351.0-403.240251.6-353.218182.5-303.189133.8-253.15099.22-203.10574.32-153.04756.20-102.97642.89-52.88933.0202.78925.6152.67320.02102.54115.77152.39912.51202.24510.00252.0838.045301.9166.514351.7525.306401.5874.348451.4263.583501.2782.968551.1362.467601.0072.068650.8911.739700.7851.469750.6911.246800.6071.061850.5330.908900.4690.779950.4140.672100

41Chapter 9 | ServiceSMO 20

9 Service

USB service outlet

LEK

SMO 20 is equipped with a USB socket in the displayunit. This USB socket can be used to connect a USBmemory to update the software, save logged informa-tion and handle the settings in SMO 20.

INDOOR CLIMATE

HOT WATER

INFO

HEAT PUMP

USB

update firmware

USB 7

logging

manage settings

When a USB memory is connected a new menu (menu7) appears in the display.

Menu 7.1 - update firmware

update firmware7.1

start updating

choose another file

This allows you to update the software in SMO 20.

NOTE

For the following functions to work the USBmemory must contain files with software forSMO 20 from NIBE.

The fact box at the top of the display shows information(always in English) of the most probable update thatthe update software has selected form the USBmemory.

This information states which product the software isintended for, the software version and general inform-ation about them. If you wish to select another file thanthe one selected, the correct file can be selected by"choose another file".

start updating

Select “start updating" if you want to start the update.You are asked whether you really want to update thesoftware. Respond "yes" to continue or "no" to undo.

If you responded"yes" to the previous question theupdate starts and you can now follow the progress ofthe update on the display. When the update is com-plete SMO 20 restarts.

NOTE

A software update does not reset the menusettings in SMO 20.

NOTE

If the update is interrupted before it is com-plete (for example power cut etc.) the softwarecan be reset to the previous version if the OKbutton is held in during start up until the greenlamp starts to illuminate (takes about 10seconds).

SMO 20Chapter 9 | Service42

choose another file

update firmware7.1

Select “choose another file" if you do not want to usethe suggested software. When you scroll through thefiles, information about the marked software is shownin a fact box just as before. When you have selected afile with the OK button you will return to the previouspage (menu 7.1) where you can choose to start theupdate.

Menu 7.2 - logging

logging7.2

activated

interval sec5

Setting range: 1 s – 60 min

Factory setting range: 5 s

Here you can choose how current measurement valuesfrom SMO 20 should be saved onto a log file on theUSB memory.1. Set the desired interval between loggings.2. Tick “activated".3. The present values from SMO 20 are saved in a file

in the USB memory at the set interval until “activ-ated" is unticked.

NOTE

Untick "activated" before removing the USBmemory.

Menu 7.3 - manage settings

manage settings 7.3

save settings

recover settings

Here you can manage (save as or retrieve from) all themenu settings (user and service menus) in SMO 20 witha USB memory.

Via "save settings" you save the menu settings to theUSB memory in order to restore them later or to copythe settings to another SMO 20.

NOTE

When you save the menu settings to the USBmemory you replace any previously saved set-tings on the USB memory.

Via "recover settings" you reset all menu settings fromthe USB memory.

NOTE

Reset of the menu settings from the USBmemory cannot be undone.

43Chapter 9 | ServiceSMO 20

In most cases, the control module notes a malfunctionand indicates this with alarms and shows instructionsto rectify it in the display. See "Manage alarm" for in-formation about managing alarms. If the malfunctiondoes not appear in the display, or if the display is notlit, the following troubleshooting guide can be used.

Manage alarm

info / action

reset alarm

aid mode

Low pressure alarm

alarm

In the event of an alarm, some kind of malfunction hasoccurred, which is indicated by the status lamp chan-ging from green continuously to red continuously. Inaddition, an alarm bell appears in the informationwindow.

AlarmIn the event of an alarm with a red status lamp a mal-function has occurred that the heat pump and/orcontrol module cannot remedy itself. In the display, byturning the control knob and pressing the OK button,you can see the type of alarm it is and reset it. You canalso choose to set the installation to aid mode.

info / actionHere you can read what the alarm meansand receive tips on what you can do to correct theproblem that caused the alarm.

reset alarm In most cases it is enough to select "resetalarm" to correct the problem that caused the alarm.If a green light illuminates after selecting "reset alarm"the alarm has been remedied. If a red light is still visibleand a menu called ”alarm” is visible in the display, theproblem that caused the alarm remains. If the alarmdisappears and then returns, see the troubleshootingsection (page 44).

aid mode ”aid mode” is a type of emergency mode.This means that the installation produces heat and/orhot water despite there being some kind of problem.This can mean that the heat pump's compressor is notrunning. In this case any electrical addition producesheat and/or hot water.

NOTE

To select aid mode an alarm action must beselected in the menu 5.1.4.

Caution

Selecting "aid mode” is not the same as correct-ing the problem that caused the alarm. Thestatus lamp will therefore continue to be red.

TroubleshootingIf the operational interference is not shown in the dis-play the following tips can be used:

Basic actionsStart by checking the following possible fault sources:■ The switch's (SF1) position.■ Group and main fuses of the accommodation.■ The property's earth circuit breaker.■ The control module's miniature circuit breaker (FA1).

Low hot water temperature or a lack of hotwaterThis part of the fault-tracing chapter only applies if thewater heater is installed in the system.■ Closed or choked filling valve for the hot water

heater.■ Open the valve.

■ Mixing valve (if there is one installed) set too low.■ Adjust the mixer valve.

■ Control module in incorrect operating mode.■ If mode "manual" is selected, select "addition".

■ Large hot water consumption.■ Wait until the hot water has heated up. Temporar-

ily increased hot water capacity (temporary lux)can be activated in menu 2.1.

■ Too low hot water setting.■ Enter menu 2.2 and select a higher comfort mode.

■ Too low or no operating prioritisation of hot water.■ Enter menu 4.9.1 and increase the time for when

hot water is to be prioritised.

Low room temperature■ Closed thermostats in several rooms.■ Set the thermostats to max, in as many rooms as

possible. Adjust the room temperature via menu1.1, instead of choking the thermostats.

■ Control module in incorrect operating mode.■ Enter menu 4.2. If mode "auto" is selected, select

a higher value on "stop heating" in menu 4.9.2.■ If mode "manual" is selected, select "heating". If

this is not enough, select "addition".■ Too low set value on the automatic heating control.■ Enter menu 1.1 "temperature" and adjust the offset

heating curve up. If the room temperature is onlylow in cold weather the curve slope in menu 1.9.1"heating curve" needs adjusting up.

■ Too low or no operating prioritisation of heat.■ Enter menu 4.9.1 and increase the time for when

heating is to be prioritised.■ "Holiday mode" activated in menu 4.7.■ Enter menu 4.7 and select "Off".

■ External switch for changing the room heating activ-ated.■ Check any external switches.

■ Air in the climate system.

SMO 20Chapter 10 | Disturbances in comfort44

10 Disturbances in comfort

■ Vent the climate system.■ Closed valves to the climate system.■ Open the valves.

High room temperature■ Too high set value on the automatic heating control.■ Enter menu 1.1 (temperature) and reduce the off-

set heating curve. If the room temperature is onlyhigh in cold weather the curve slope in menu 1.9.1"heating curve" needs adjusting down.

■ External switch for changing the room heating activ-ated.■ Check any external switches.

Low system pressure■ Not enough water in the climate system.■ Top up the water in the climate system.

The compressor does not start■ There is no heating requirement.■ The heat pump does not call on heating nor hot

water.■ Temperature conditions tripped.■ Wait until the temperature condition has been re-

set.■ Minimum time between compressor starts has not

been reached.■ Wait 30 minutes and check if the compressor has

started.■ Alarm tripped.■ Follow the display instructions.

Additional heating onlyIf you are unsuccessful in rectifying the fault and areunable to heat the house, you can, whilst waiting forassistance, continue running the heat pump in ”add.heat only”. This means that additional heating only isused to heat the house.

Set the installation to additional heat mode1. Go to menu 4.2 op. mode.2. Mark ”add. heat only” using the control knob and

then press the OK button.3. Return to the main menus by pressing the Back

button.

Caution

When commissioning without NIBE air/waterheat pump an alarm communication error mayappear in the display.

The alarm is reset if the relevant heat pump isdeactivated in menu 5.2.2 ("installed heatpump").

45Chapter 10 | Disturbances in comfortSMO 20

Auxiliary relay HR 10Part no. 067 309

Charge pump CPD 11Charge pump for heat pump

CPD 11-25/75Part no. 067 320

CPD 11-25/65Part no. 067 321

Connection box K11Connection box with thermostat and overheatingprotection.

Part no. 018 893

External electric additional heat ELKThese accessories may require accessories card AXC 30(step controlled addition).

ELK 5

Immersion heater

5 kW, 1 x 230 V

Part no. 069 025

ELK 8

Immersion heater

8 kW, 1 x 230 V

Part no. 069 026

ELK 15

Immersion heater

15 kW, 3 x 400 V

Part no. 069 022

ELK 26

Immersion heater

26 kW, 3 x 400 V

Part no. 067 074

ELK 213

Immersion heater

7-13 kW, 3 x 400 V

Part no. 069 500

Heat pump

F2030

7 kW Part no. 064 099

9 kW Part no. 064 070

F2040

8 kW Part no. 064 109

12 kW Part no. 064 092

16 kW Part no. 064 108

F2300

14 kW Part no. 064 063

20 kW Part no. 064 064

Hot water control

VST 05

Reversing valve, Cu pipe Ø22

Max heat pump size 8 kW

Part no. 089 882

VST 11

Reversing valve, Cu pipe Ø28(Max recommended output, 17 kW)

Part no. 089 152

VST 20

Reversing valve, Cu pipe Ø35(Max recommended output, 40 kW)

Part no. 089 388

Immersion heater IUPart no. 018 0843 kW

Part no. 018 0886 kW

Part no. 018 0909 kW

Reversing valve for cooling

VCC 05

Part no. 067 311

VCC 11

Part no. 067 312

Room sensorRTS 40Part no. 067 065

Water heater/Accumulator tank

VPA 450/300

Water heater with double-jacketed vessel.Part no. 088 660CopperPart no. 088 670Enamel

VPB 200

Water heater with charge coil.Part no. 088 515CopperPart no. 088 517EnamelPart no. 088 518Stainless

steel

SMO 20Chapter 11 | Accessories46

11 Accessories

VPB 300

Hot water heater with charge coilPart no. 083 009CopperPart no. 083 011EnamelPart no. 083 010Stainless

steel

VPB 500

Copper lined water heater with charge coil

Part no. 083 220

VPB 750-2


Part no. 083 231

VPB 1000


Part no. 083 240

VPAS 300/450

Water heater with double-jacketed vessel and solarcoil.

Part no. 087 720CopperPart no. 087 710Enamel

47Chapter 11 | AccessoriesSMO 20

Dimensions and setting-out coordinates

110

410

360

110

10

310

21570

35

SMO 20Chapter 12 | Technical data48

12 Technical data

Technical specifications

IP 21

SMO 20

Electrical data

230 V ~ 50 HzSupply voltage

IP21Enclosure class

4kVRated value for impulse voltage

2Pollution degree

Optional connections

1Max number air/water heat pumps

8Max number of sensors

1Max number of charge pumps

3Max number of outputs for additional heat step

Miscellaneous

Type 1Operation mode (EN60730)

-25 – 70°CArea of operation

5 – 35°CAmbient temperature

1, 24Program cycles, hours

1, 2, 5, 7Program cycles, days

1min.Resolution, program

Dimensions and weight

360mmWidth

110mmDepth

410mmHeight

4.3kgWeight, (without packaging and enclosed components)

067 224Part No.

49Chapter 12 | Technical dataSMO 20

Electrical circuit diagram


Item register

AAccessibility, electrical connection, 14Accessories, 46Alarm, 44

BBack button, 29

CCable lock, 15Commissioning and adjusting, 24

Commissioning with additional heating only, 24Commissioning with NIBE air/water heat pump, 24Cooling mode, 24Preparations, 24Setting hot water circulation, 28Setting the cooling/heating curve, 26SG Ready, 28Start guide, 25

Commissioning with additional heating only, 24Commissioning with NIBE air/water heat pump, 24Communication with heat pump, 17Connecting accessories, 23Connecting the charge pump for the heat pump, 16Connections, 16Contact for activation of “external adjustment", 22Contact for activation of “temporary lux", 22Contact for external tariff blocking, 21Contact information, 6Control, 29, 33

Control - Introduction, 29Control - Menus, 33

Control - Introduction, 29Display unit, 29Menu system, 30

Control knob, 29Control - Menus, 33

Menu 5 - SERVICE, 36Cooling mode, 24Cooling mode indication, 23

DDelivery and handling, 7

Mounting, 7Supplied components, 7

Display, 29Display unit, 29

Back button, 29Control knob, 29Display, 29OK button, 29Status lamp, 29Switch, 29

Disturbances in comfort, 44Alarm, 44Manage alarm, 44Only additional heat, 45Troubleshooting, 44

Docking alternatives, 10

EElectrical connections, 13

Accessibility, electrical connection, 14Cable lock, 15Communication with heat pump, 17Connecting accessories, 23Connecting the charge pump for the heat pump, 16Connections, 16External circulation pump, 20

External connection options, 21General, 13Miniature circuit-breaker, 13NIBE Uplink™, 20Optional connections, 19Outdoor sensor, 17Power connection, 16Relay output for emergency mode, 20Reversing valve, 20Room sensor, 19Step controlled additional heat, 19Temperature sensor, external flow line, 18Temperature sensor, external supply line after electric heat-er, 18Temperature sensor, hot water charging, 17

External circulation pump, 20External connection options, 21

Contact for activation of “external adjustment", 22Contact for activation of “temporary lux", 22Contact for external tariff blocking, 21Cooling mode indication, 23Extra circulation pump, 23Hot water circulation, 23Possible selection for AUX inputs, 21Possible selection for AUX output (potential free variable re-lay), 23Switch for "Smart Grid ready", 21Switch for activation of external alarm, 22Switch for external blocking of function, 22Temperature sensor, cooling/heating, 21Temperature sensor, external flow line, 21Temperature sensor, flow line cooling, 21Temperature sensor, hot water top, 17

Extra circulation pump, 23

HHelp menu, 25, 32Hot water circulation, 23

IImportant information, 4

Safety information, 4Inspection of the installation, 5

MManage alarm, 44Marking, 4Menu 5 - SERVICE, 36Menu system, 30

Help menu, 25, 32Operation, 31Scroll through the windows, 32Selecting menu, 31Selecting options, 31Setting a value, 31Use the virtual keyboard, 32

Miniature circuit-breaker, 13Mounting, 7

NNIBE Uplink™, 20

OOK button, 29Only additional heat, 45Operation, 31Optional connections, 19Outdoor sensor, 17

SMO 20Chapter 13 | Item register54

13 Item register

PPipe connections, 9

Docking alternatives, 10General, 9Symbol key, 9

Possible selection for AUX inputs, 21Possible selection for AUX output (potential free variable relay), 23Power connection, 16Preparations, 24

RRelay output for emergency mode, 20Reversing valve, 20Room sensor, 19

SSafety information, 4

Contact information, 6Inspection of the installation, 5Marking, 4Serial number, 4Symbols, 4

Scroll through the windows, 32Selecting menu, 31Selecting options, 31Serial number, 4Service, 41

Service actions, 41Service actions, 41

Standby mode, 41Temperature sensor data, 41USB service outlet, 42

Setting a value, 31Setting hot water circulation, 28Setting the cooling/heating curve, 26SG Ready, 28Standby mode, 41Start guide, 25Status lamp, 29Step controlled additional heat, 19Supplied components, 7Switch, 29Switch for "Smart Grid ready", 21Switch for activation of external alarm, 22Switch for external blocking of function, 22Symbol key, 9Symbols, 4

TTechnical data, 48

Technical Data, 49Technical Data, 49Temperature sensor, cooling/heating, 21Temperature sensor, external flow line, 18, 21Temperature sensor, external supply line after electric heater, 18Temperature sensor, flow line cooling, 21Temperature sensor, hot water charging, 17Temperature sensor, hot water top, 17Temperature sensor data, 41The Control Module Design, 8

Component locations, 8List of components, 8

Troubleshooting, 44

UUSB service outlet, 42Use the virtual keyboard, 32

55Chapter 13 | Item registerSMO 20

WS name: -GemensamtWS version: a89WS release date: 2015-09-26 11:55Publish date: 2015-11-13 09:25

NIBE AB Sweden

Hannabadsvägen 5Box 14 SE-285 21 [email protected]

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Installermanual SMO20 - NIBE

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