TIME InstallationMaintenanceOperation UK 04 2008

TIME

Installation, Maintenance & Operation

2

Table of Contents

Declaration of Conformity . . . . . . . . . . . . . . 31 . Transport . . . . . . . . . . . . . . . . . . . . . 4

1 .1 Accessories . . . . . . . . . . . . . . . . 4 1 .2 Unloading by fork-lift . . . . . . . . . . . . 4 1 .3 Unloading by crane . . . . . . . . . . . . 4 1 .4 Pre-assembly storage . . . . . . . . . . . 4

2 . Installation—mechanical . . . . . . . . . . . . . 5 2 .1 Floor . . . . . . . . . . . . . . . . . . . . 5 2 .2 Install the adjustable feet before the sections are pushed together . . . . . . . . . . . . . . 5 2 .3 Assembling the AHU sections . . . . . . . 5 2 .4 Fitting the ductwork . . . . . . . . . . . . 6 2 .5 Free entrance for maintenance . . . . . . 6 2 .6 Pipe connection to coils . . . . . . . . . . 6

2 .6 .1 Pipe connection to heating coil . . . 62 .6 .2 Pipe connection of chilled water to cooling coil . . . . . . . . . . . . . . . . . 6

2 .7 Valve motor and 2-way control valve for heating . . . . . . . . . . . . . . . . . . . 7 2 .8 Drainage of condensate water . . . . . . . 7

2 .8 .1 Drainage from plate heat exchanger . 72 .8 .2 Drainage from cooling coil . . . . . . 7

2 .9 Dismantling and disposal . . . . . . . . . 73 . Installation – electrical . . . . . . . . . . . . . . 8

3 .1 “Quick guide” for the installation . . . . . . . 8 3 .2 Flow Chart . . . . . . . . . . . . . . . . 11 3 .3 Function . . . . . . . . . . . . . . . . . . 13

3 .3 .1 Control of supply temperature is a cascaded room temperature control . . . 133 .3 .1 .1 Alternative temperature control modes . . . . . . . . . . . . . . . . . . . 143 .3 .2 Fan Control . . . . . . . . . . . . . 143 .3 .2 .1 The unit running according to the CAV principle . . . . . . . . . . . . . . 143 .3 .2 .3 Alternative fan control modes . . . 143 .3 .3 .3 Frost protection – heating coil . . . 143 .3 .4 Frost Protection – Plate heat exchanger . . . . . . . . . . . 153 .3 .5 Filter alarm . . . . . . . . . . . . . . 153 .3 .6 Fire Alarm and Fire Protection (option) . . . . . . . . . . . . . . . . . . . 153 .3 .7 Extended Running – Installation and Activation (option) . . . . 153 .3 .9 Cooling recovery in output block Y4 (option) . . . . . . . . . . . . . . 163 .3 .10 Change over coil regulation . . . . 16

3 .4 Start-up and control . . . . . . . . . . . . 173 .4 .1 Checklist before initial start-up . . . . 173 .4 .2 Start and stop conditions and sequence . . . . . . . . . . . . . . . . . 173 .4 .3 Constant Airflow Volume – CAV . . . 173 .4 .4 Variable Air Volume – VAV (Constant pressure in the ducts) . . . . . . . . . . . 17

3 .4 .5 Temperature setting . . . . . . . . . 173 .4 .6 Alarms . . . . . . . . . . . . . . . . 173 .4 .7 Access rights – passwords . . . . . 18

3 .5 External connections . . . . . . . . . . . . 19 3 .6 Standard components . . . . . . . . . . . 20 3 .7 Options . . . . . . . . . . . . . . . . . . 20 3 .8 Terminals . . . . . . . . . . . . . . . . . . 21 3 .9 Communication – Input and Output list for terminals on the Corrigo E28 . . . . . . . . . . 22 3 .10 Communication to BMS systems . . . . . 23

3 .10 .1 Communication to BMS systems with TCP/IP . . . . . . . . . . . . . . . . 233 .10 .2 Communication to BMS systems with LON . . . . . . . . . . . . . . . . . . 233 .10 .3 Communication to BMS systems with MODBUS . . . . . . . . . . . . . . . 23

4 . Maintenance . . . . . . . . . . . . . . . . . . . 24 4 .1 Stop the unit and switch off the main power supply before maintenance . . . . . . . . 24 4 .2 Maintenance schedule . . . . . . . . . . . 24 4 .3 Air Handling Unit . . . . . . . . . . . . . . 26 4 .4 Dampers . . . . . . . . . . . . . . . . . . 26 4 .5 Filters . . . . . . . . . . . . . . . . . . . 26 4 .6 Rotary heat exchanger . . . . . . . . . . . 27

4 .6 .1 Rotor . . . . . . . . . . . . . . . . . 274 .6 .2 Motor and belt drive . . . . . . . . . 274 .6 .3 Varimatic system . . . . . . . . . . . 27

4 .7 Plate heat exchanger . . . . . . . . . . . 284 .7 .1 By-pass damper . . . . . . . . . . . 284 .7 .2 Condense water drain . . . . . . . . 28

4 .8 Heating and cooling coils . . . . . . . . . 284 .8 .1 Heating coil – frost protection . . . . 284 .8 .2 Cooling coil . . . . . . . . . . . . . 29

4 .9 Fans . . . . . . . . . . . . . . . . . . . . 294 .9 .1 Motor . . . . . . . . . . . . . . . . 29

4 .10 Fire alarm . . . . . . . . . . . . . . . . . 29 4 .11 Battery backup in the controller . . . . . . 29

5 . Commissioning report . . . . . . . . . . . . . . 30 5 .1 Alarm settings . . . . . . . . . . . . . . . 34

3TIME (Master/uk) V.05.04.2008

Declaration of Conformity The Manufacturer: Systemair A/S Ved Milepælen 7 DK - 8361 Hasselager Denmark Hereby declares that: The Product: Air Handling Unit DV Air Handling Unit DV-TIME is in conformity with the following Directives and Standards: Low Voltage Directive 2006/95/EC Standard: EN 60 204-1 EMC Directive 2004/108/EC Standards: EN 61 000-6-2, EN 61 000-6-4 By design, the Units, considered as components, comply with the essential requirements of Machinery Directive 98/37/EC Annex II, Sub B provided that the Installation is correctly realised by the Manufacturer of the Ventilation System (in compliance with our Installation Instructions). Standards: EN ISO 12 100-1, EN ISO 12 100-2 The Units above must not be put into service, until the Ventilation Systems into which they have been incorporated, have been declared in Conformity with the Machinery Directive. Date: 01. 10. 2007

Ole Levenhart Andersen Technical Manager

Declaration of Conformity

Overensstemmelseserklæring

4

1. TransportThe AHU is delivered in 3 or 4 sections, which are to be assembled onsite . The AHU can be lifted by fork-lift or by crane using suitable lifting straps .

1.1 Accessories Accessories such as adjustable feet, Disc-Lock, water trap for condensate water from plate heat exchanger and cooling coil, spare filters (to be ordered separately) and other loose items, are packed into a box and put inside the AHU . On the outside of the unit section, in which these items are placed, will be a red sticker . Duct connection parts are also placed inside the AHU (with exceptions) . Remember to remove transport fix-ing pieces . These are identified by red stickers . 1.2 Unloading by fork-liftThe forks must be long to avoid damage of the under-side of the AHU .

1.3 Unloading by crane The straps must be secured to the supporting legs as shown in the illustration .

1.4 Pre-assembly storageThe AHU must be protected from weather and impact . Packaging must be removed and the unit covered with tarpaulin or similar . In order to minimise conden-sation, sufficient air circulation must be ensured be-tween the covering and the unit .

Transport


Installation – mechanical

2. Installation—mechanicalNB! When positioning the unit on the site, it must be ensured that: • The necessary space requirements for service and inspection in front of the unit are met . It is recommended that a distance corresponding to the unit’s width is kept free for service and inspection in front of the unit. • The necessary space requirements for access to the switchboard over the unit are met . It is recommended that the distance between switch-board and ceiling is at least 700 mm .

2.1 FloorThe floor must be level and even for the unit . The building construction and floor must be able to resist the load of the AHU . In the case of lightweight con-struction and floor transmitting noise and vibrations, the unit must be placed on an absorbing foundation . The adjustable feet, delivered with the unit, must be replaced by vibration absorbing material .

2.2 Install the adjustable feet before the sections are pushed togetherThe adjustable feet must be fitted in the support-ing legs to level the sections before the sections are pushed together .

2.3 Assembling the AHU sectionsSections are assembled with the Disc-Lock system .

1 . Ensure that the factory fitted rubber sealings are undamaged

2 . The sections are then to be positioned directly op-posite each other . The feet must be adjusted to get the profiles parallel and the locking pins for the Disc-Locks at the same height .

3 . The sections must then be pushed together so that the rubber profiles fit directly into one another (please see the illustration) . Push the sections carefully together to ensure that the Disc-Locks will not be used for pulling the sec-tions together .

4 . The sections are then to be locked together using the Disc-Lock system . Place a Disc-Lock on each pair of locking pins . Each section is prepared for a Disc-Lock at the vertical part of every corner — usually 4 Disc-Locks between 2 sections . Tighten the Disc-Locks loosely with the supplied tool, until the sections are pressed hard against each other (please see the illustration) .

Minimum distance to the ceiling – 700 mm

6


2.4 Fitting the ductworkFlexible connections should always be installed be-tween AHU and ductwork . It is important that dimen-sions of ducts and dimensions of the openings in the unit are strictly identical .

2.5 Free entrance for maintenance It must be ensured that pipes, cables etc . do not ob-struct the inspection doors and components that can be extracted from the unit . In special circumstances, where it is impossible to open the inspection doors, the hinge pins can be removed to remove the doors .

2.6 Pipe connection to coils

2.6.1 Pipe connection to heating coilThe heating capacity of the coil with only 2 rows is independent of the connection of the warm water in equal flow or in counter flow to the direction of the air . The pipes on the heating coil are marked for inlet in the bottom and outlet in the top and this is OK for air flow from the left side as well as from the right side . NB! Glycol without additives should be used . Auto gly-col must not be used .

2.6.2 Pipe connection of chilled water to cooling coilCoils with 3 rows or more must always be connected in counter flow to the airflow (see the illustration) .

Exhaust

Exhaust

Extract

Extract

Supply

Supply

Outdoor air

Outdoor air

air

Pipe connections for cooling coil

Pipe connections for cooling coil

air



2.7 Valve motor and 2-way control valve for heatingValve motor and 2-way control valve are included in the delivery for the heating coil . Valve motor and valve are packed in a box and are not installed . The illustra-tion – system with 2-way control valve – shows an example of a system that is working well together with the controller and the system offers a good protection against frost, too (pump, stop valves, non return valve, thermometers and pipes are not included in the delivery from Systemair) .

The coil and pipes from the coil are not constructed to withstand the weight and stress from circulation pump, valves and thermometers . The system must be supported carefully in rigid suspensions to the floor and to the walls .

2.8 Drainage of condensate waterDrip trays to collect condensate water are installed under plate heat exchanger and cooling coil . Each drip tray is provided with a drainage outlet . To avoid freeze ups and frost bursts of pipes, sufficient insulation is recommended and even installation of heating be-tween the pipes and the insulation could be necessary (insulation and heating is not included) .

2.8.1 Drainage from plate heat exchangerTo ensure that the water escapes from the tray under the plate heat exchanger, a water trap is included in the delivery, but not installed .

To ensure the safe drainage of water, the closing level of the water traps must be correctly dimensioned (see the illustration) .

2.8.2 Drainage from cooling coilA drip tray is installed under the cooling coil, and a wa-ter trap for the drainage is included but not installed .

The cooling coil is installed after the fan, and to pre-vent air from flowing out in the room or into the sew-age system, the closing level of the water traps must be correctly dimensioned (see the illustration) .

2.9 Dismantling and disposalRemember to disconnect all electrical and plumbing connections before dismantling . All fluids must be drained and emptied from the unit which must then be disposed of in accordance with the valid and current local regulations . After dismantling of the unit, the sec-tions must be taken apart and the pieces placed into groups according to the material type . The materials must then be delivered to an approved site .

P H1 Min . H2 500 Pa 90 mm 65 mm 750 Pa 120 mm 90 mm 1000 Pa 150 mm 120 mm

Positive pressure

Positive pressureP (Pa)

System with 2-way control valve.

+

Pump Stop valve

Thermometer 2-way control valve

Non return valve

Variable water flow in the primary circuit.Constant water flow in the secondary circuit.The preferred system for district heating.

Secondary circuit

Primary circuit

Negative pressureP (Pa)

P H1 Min . H2 500 Pa 100 mm 40 mm 750 Pa 150 mm 55 mm 1000 Pa 190 mm 70 mm

Negative pressure

8

Installation – electrical

3. Installation – electrical Do not start the TIME Air Handling Unit before all elec-trical and mechanical safety procedures have been carried out carefully .

The TIME Air Handling Unit as well as the electrical equipment is exclusively for indoor installation and must be protected against water and humidity .

3.1 “Quick guide” for the installation.Before shipment the unit has been assembled and has passed a final functional test . A copy of the test report is delivered with the unit . After the final test the unit is divided into separate sections to facilitate the transport . When the unit has been reassembled on the building site, the clearly marked cables must be reconnected in the switchboard .

Please see the illustration to the right showing the main electrical components;

- Hand terminal- Switchboard- Main switch- Frequency converter – exhaust- Frequency converter – supply- Rotation speed regulation – rotor

Step 1: Prepare cables for reconnection.Before the unit was divided in separate sections, the cables were disconnected in the switchboard . They were pulled back to the sections and are now ready for reinstallation in the switchboard .

Step 2: Reinstall cables in the switchboardPull the cables through the rubber seal in the roof panel, behind the switchboard . Pull the cables through the cable entries on the back of the switchboard .

Step 3: Reinstall the cables in the terminal blocks All cables are marked with numbers . Install the cables in the terminals with the corresponding numbers .

Step 4: Pressure transmitters – air flow – m3/h – CAVIf the air handling unit was ordered with regulation based on the Constant Air Volume (CAV), the pressure transmitters are installed inside the unit by the factory . The system has been tested – ready for start-up .

Hand terminal

Main switchSwitchboard

Frequency converter – exhaust

Rotation speed controller – rotor

Frequency converter – supply

Step 1 – Prepare cables ready for reconnection

Step 2 – Reinstall cables in the switchboard



Step 5: Pressure transmitters – pressure – Pa – VAVIf the regulation of the air volume from the unit must be based on a constant pressure in the duct system, the air volume from the air handling unit must be adapted continuously according to the VAV principle – Variable Air Volume to maintain the constant pressure in the duct system . With regulation according to the constant pressure in duct system, there are no pres-sure transmitters installed inside the unit over the fans, but the pressure transmitters must be installed in the main ducts – one pressure transmitters in the main duct for the supply air and one pressure transmitters in the main duct for the extract air .

The pressure transmitters are packed in a box placed beside the switchboard on the top of the unit . The pressure transmitters are connected in the switch-board with a 10 m long cable . If you need longer ca-bles, please replace the delivered cables with new and longer cables . The pressure transmitters are provided with screw terminals for easy installation of longer ca-bles . It is important to select positions for the pressure transmitters without heavy turbulences in the ducts, because stable signals to the controller are very im-portant .

Step 6: Installation of supply air temperature sensorThe supply air temperature sensor is packed in a box placed beside the switchboard on the top of the unit . The sensor is connected in the switchboard with a 10 m long cable .

Min. 1 m

PT1000

Supply: Install the hose on

+

Pressure transmitters installed for VAV

Extract: Install the hose on

-

Step 6 – Installation of supply air temperature sensor.

Unit with pressure transmitters on the duct for VAV

10


Step 7: Connection of mains power supply

AHU: Motor: Fuse (minimum): Fuse (max):

TIME 10 2 x (1,1 kW - 2,6 A) 2 x (1,5 kW - 3,3 A)

16 A 50 A

TIME 15 2 x (1,5 kW - 3,3 A) 2 x (2,2 kW - 4,4 A)

16 A 50 A

TIME 20 2 x (2,2 kW - 4,4 A)2 x (3,0 kW - 6,6 A)

16 A 50 A

TIME 25 2 x (3,0 kW - 6,6 A) 2 x (4,0 kW - 8,5 A)

16 A 25 A

50 A50 A

TIME 30 2 x (4,0 kW - 8,5 A)2 x (5,5 kW - 11,4 A)

25 A 50 A

TIME 40 2 x (5,5 kW - 11,4 A)2 x (7,5 kW - 15,2 A)

25 A 35 A

50 A50 A

AHU = Air Handling Unit

Connection of 3 X 400 V + Zero + GroundTerminal X0 1U1 PhaseTerminal X0 1V1 PhaseTerminal X0 1W1 PhaseTerminal X0 1N1 NeutralTerminal X0 1PE1 Ground

The power supply installation in the building must be provided in accordance to the statutory requirements for the additional protection of frequency converters . If a residual current device is connected, it must have a threshold current of at least 300 mA .

Step 8: Turn on the power

Step 9 The TIME unit is controlled from the hand ter-minal E-DSP with display and buttons . To change the most common settings, please use the instructions in the TIME User Manual . Changes in the configura-tion of the system are described in the Corrigo E-User Manual .

Step 10: Calendar settingsSetting of time, date, weekday, year – see the TIME User Manual under Calendar settings .

Step 11: Schedule settingsThe TIME unit is delivered with factory settings – to change the factory settings, please see the TIME User Manual under Schedule settings .

Step 12: Start-up of the TIME unitPlease read chapter 3 .4 about Start-up and test of safety functions . Follow the checklist carefully .

1U1 Phase1V1 Phase1W1 Phase1N1 Neutral1PE1 Ground

Terminal block X0

FusesF4 F3 F5

Terminal block X2

Terminal block X1

Controller Corrigo E28

RelaysX4

X3

Power supply 24V AC

Switch

Main power sup-ply to terminal block X0

Hand terminal

Main switch


Flow chart – air flow – m3/h CAV

FF Exhaust fanTF Supply fanGT1 Supply temperature sensorGT2 Outdoor temperature sensorGT3 Extract temperature sensorGT4 Room temperature sensorGTF Temperature sensor, frost protection heating coilGTF1 Temperature sensor, de-icing of the plate heat exchangerGP1 Pressure guard, extract filterGP2 Pressure guard, supply filter

GP3 Pressure transmitter, exhaust fanGP4 Pressure transmitter, supply fanST1 Damper, outdoor airST2 Damper, exhaust airST3 By-pass damperVVX Heat recoveryGV Rotor guardSVV Valve with motor, heating coilDVH Heating coilDVK Cooling coilBT Fire temperature sensor

ST2

GT4T

BTT

GT3T

GP1GP2GT2T

ST1

BTT

GT1T

FF

GP3P

GP4P

DVKDVH

GTF

BEIMVXY

GTF1

ST3

VVX

T

T

SVV

TF

Supply airExhaust air

Outdoor air Extract air

GP1GP3

SVV

FF

GT4T

BTT

GP2ST1 GT2T

BTT

GT1DVHT

GP4

TF

GT3T

GTF T

P

P

ST2

GV

VVX

AEIMVXY

DVK

Supply air

Exhaust air

Outdoor air

Extract air

Plate heat exchanger – air flow – m3/h – CAV:

3.2 Flow Chart Rotary heat exchanger – air flow – m3/h – CAV:

12

GP1

SVV

FF

GT4T

BTT

GP2ST1 GT2T

BTT

GT1DVHT

TF

GT3T

GTF T

ST2

GV

VVX

CEIMVXY

DVK

GP3P

GP4P

FF

GT4T

BTT

GT3T

ST2

GP3P

GP1GP2GT2T

ST1

BTT

GT1T

TF

GP4P

DVH

SVV

GTF T

DEIMVXY

DVKGTF1

ST3

VVX

T

Flow chart – pressure – Pa – VAV

Rotary heat exchanger – pressure – Pa – VAV:

Plate heat exchanger – pressure – Pa – VAV:

FF Exhaust fanTF Supply fanGT1 Supply temperature sensorGT2 Outdoor temperature sensorGT3 Extract temperature sensorGT4 Room temperature sensorGTF Temperature sensor, frost protection heating coilGTF1 Temperature sensor, de-icing of the plate heat exchangerGP1 Pressure guard, extract filterGP2 Pressure guard, supply filter

GP3 Pressure transmitter, exhaustGP4 Pressure transmitter, supplyST1 Damper, outdoor airST2 Damper, exhaust airST3 By-pass damperVVX Heat recoveryGV Rotor guardSVV Valve with motor, heating coilDVH Heating coilDVK Cooling coilBT Fire temperature sensor

Supply air

Exhaust air

Outdoor air

Extract air

Supply airExhaust air

Outdoor air Extract air


Function

3.3 FunctionSchedules The controller has individual schedules for start, stop and air flow rate for each week-day as well as sched-ules for holidays . The regulator has an automatic summer-winter-time change over . Outside normal op-erating hours free cooling (option) is available accord-ing to settings .

3.3.1 Control of supply temperature is a cascaded room temperature controlControl of the supply temperature is based on 2 tem-perature sensors: • a sensor inside the extract section giving the mixed

average temperature from the rooms, GT4• a sensor with a 10 m long cable installed in the sup-

ply air duct, GT1

The supply air temperature is controlled by a cascad-ed PI room temperature control with settable P-band and I-time . On the hand terminal the set point value for the room temperature as well as the maximum supply temperature and the minimum supply tem-perature are adjustable . To avoid draught, the supply temperature is only regulated between the minimum temperature and the maximum temperature .

When the actual room temperature is identical to the set point for the room temperature and the outside temperature is identical to this actual room tempera-ture, the supply air will just pass the unit without any heating or cooling . In the unit with a plate heat ex-changer the supply air is led through the by-pass and in the unit with a rotary heat exchanger the rotor is stopped .

If the room temperature declines under the set point value and the outdoor temperature is low:1 . The by-pass damper motor is activated to lead

supply air through the plate heat exchanger or the rotating rotor is started and the speed is increased with increasing demand .

2 . If the demand for heating is increasing further the valve motor on the heating coil valve is activated to start heating . The heating capacity is increased by increasing demand .

If the room temperature exceeds the set point value and the heat recovery is off:1 . The cooling, if available, is activated and increased

with increasing demand .

Due to the PI method, only a minor deviation from the set point temperature occurs .

In the illustration above, the regulation sequences of the capacities in 3 output blocks – Y1, Y2 and Y3 are shown .

Supply temperature identical to outdoor temperatureThe supply temperature is OK without any supply of heating or cooling - the capacity of heating and cool-ing is 0% . The “dead interval” between heating and cooling is 4% of the full controller signal output .

Demand for heating fulfilled by the heat recovery in the output block Y2By a minor demand for heating, the heat recovery is activated . In the unit with the plate heat exchanger the modulating by-pass damper motor is activated to lead a small part of the supply air through the plate heat exchanger and by increasing demand an increas-ing part of the supply air is led through the exchanger . In the unit with the rotary heat exchanger the rotor is

CoolingY3

Heat exch.Y2

HeatingY1

0%

100%

Output signal

Y3 Y2 Y1 Heat demand0%

100%

65%

34%

30%

Controller signal

Maximum supply temperature

Set point room temperature

Minimum supply temperature

Factory setting Maximum 28 ˚C

Factory setting Minimum 14 ˚C

14

Function

started at a very low speed of approximately 2 revolu-tions pr minute . By increasing demand the speed is increased . The maximum speed is 10-15 revolutions per minute depending on the size of the TIME unit .

Demand for heating fulfilled by the heat recovery and additional heating in the output block Y1When the capacity of the heat exchanger is 100 % and the demand for heating is increasing further, the valve motor on the heating coil valve is activated to start heating . Due to the PI method, only a minor de-viation from the set point temperature occurs, if the heating capacity is sufficient .

Demand for cooling in the output block Y3When the heating sequence in the output block Y2 is off and the actual room temperature exceeds the set point temperature, the cooling, if available, is activated by a digital signal to the compressor and an analogue signal to the valve motor (valve motor and valve are not included in the delivery) . By increasing demand for cooling, the cooling capacity is increased . Due to the PI regulation, only a minor deviation from the set point temperature occurs, if the cooling capacity is sufficient .

3.3.1.1 Alternative temperature control modes Several alternative control modes are included in the software . Skilled technicians are able to activate and optimize the alternative modes for the user at the building site (activation and setting are not included in the service from the factory) . These changes to the configuration of the system are described in the Cor-rigo E—User Manual . Please download this manual from www .regin .se . Some of the alternative control modes are:• Outdoor temperature compensated supply air tem-

perature control .• Outdoor temperature dependent switching between

room temperature control and supply air tempera-ture control

• Supply air temperature control

3.3.2 Fan Control

3.3.2.1 The unit running according to the CAV principleControl of air flow in m³/h through the fans . The air flow rates of supply and extract air are controlled separately . The supply, extract, high (normal) and low (reduced) airflow in m³/h are set separately on the hand terminal . The differential pressures across the fans are measured by pressure transmitters . Based on

the measured pressures the air volume in m³/h is cal-culated . The controller maintains the set point values by controlling the speed of the fans according to the PI method .

3.3.2.2 The unit running according to the VAV principleControl of the constant air pressure in the main ducts . The pressure in the supply duct and in the extract duct are controlled separately . The supply, extract, high (normal) and low (reduced) air pressures in Pa are set separately on the hand terminal . If the air pressure deviates from the set point, the control system will change the fan speed to re-establish the set point air pressure again .

On the hand terminal pressures are settable between 0 and 300 Pa . Maybe it is necessary to increase or decrease the setting of the pressure in the ducts fur-ther to achieve the demanded airflow for the building . In the display, it is possible to read the actual Pa for supply as well as the actual Pa for the exhaust, and it is not possible to read the m³/h for the VAV regula-tion in the display of the hand terminal, because the 2 pressure transmitters are used to measure the pres-sure in the ducts, and not for the differential pressure across the fans and the calculation of m³/h through the system .

3.3.2.3 Alternative fan control modesAlternative control modes are included in the software . Skilled technicians are able to activate and optimize the alternative modes for the user at the building site (activation and setting are not included in the service from the factory) . These changes to the configuration of the system are described in the Corrigo E—User Manual . Please download this manual from www .regin .se• CO2/VOC regulated air flow• Reduced fan speed at low outdoor temperatures

3.3.3.3 Frost protection – heating coilThe protection procedures are active for the heating coil and for the change over coil in the heating mode .For frost protection a temperature sensor is installed in a return circuit of the coil . The control signal to the valve motor is kept at a level that secures a water re-turn temperature that exceeds the factory set “alarm limit frost” temperature . If the water temperature falls to a value below the “alarm limit frost” (factory setting 7 ºC), the fans are stopped, the dampers are closed and alarm is activated . This procedure is activated for the unit in the On-mode as well as in the Off-mode .


Function

The unit is without frost protection, if the unit is switched off on the main switch . The controller has no power back up to run the frost protection procedure, if the power is off .

The unit in the On-modeIf the water temperature in the coil falls to a value be-low the “alarm limit frost” + “Set point in On-mode” (factory setting 7 ºC + factory setting 5 ºC = 12 ºC), the motor valve on the coil is activated to increase the wa-ter flow until the water temperature exceeds the “alarm limit frost”+ “set point On-mode” . If the temperature is still falling, the motor valve is activated to go to 100 % open . If the water temperature falls to a value below the “alarm limit frost” (factory setting 7 ºC), the fans are stopped, the dampers are closed and the alarm is activated .

The unit in the Off-modeIf the water temperature in the coil falls to a value be-low 25 ºC (factory setting), the motor valve on the coil is activated to maintain the 25 ºC . If the temperature is still falling, the motor valve is activated to go to 100 % open . If the water temperature falls to a value below the “alarm limit frost” (factory setting 7 ºC), the alarm is activated .

3.3.4 Frost Protection – Plate heat exchangerTo prevent the plate heat exchanger from being blocked and damaged by ice, when the outdoor air temperature is low, the flow of outdoor air through the plate heat exchanger is reduced . The distribution of the flow between the exchanger and the by-pass is calculated in the controller according to the PI method to keep the heat exchange capacity at the maximum . A temperature sensor is installed in the exhaust air flow at the coldest area of the exchanger . The proce-dure is activated when the temperature measured by the sensor falls below minus 3 °C . The dampers are controlled by a modulating damper motor .

3.3.5 Filter alarmWhen the filter guards are activated (factory setting 200 Pa) because the resistance in the filters is too high, the alarm is visible on the hand terminal – a lamp and a text in the display .

3.3.6 Fire Alarm and Fire Protection (option) Two thermostats are installed in the unit – one in the extract air and one in the supply air . The cut off tem-perature in the thermostats are adjustable between 40 and 70 degrees Celsius . The factory setting for supply is 70 ˚C and extract is 40 ˚C . If the unit is ordered with

the 2 thermostats, the controller is as standard config-ured to stop the fans and close the dampers if one of the thermostats are released .

Skilled technicians are able to activate and optimize alternative modes for the user at the building site (acti-vation and setting are not included in the service from the factory) . These changes to the configuration of the system are described in the Corrigo E-User Manual . Please download this manual from www .regin .se . As alternative it is also possible to connect a smoke de-tection system to the controller .

The terminal numbers appear from the electrical dia-grams . Note! It is important to setup the digital input in the controller correctly, to “normally open” or “normally closed”, according the system requirements .

3.3.7 Extended Running – Installation and Activation (option)The unit can be activated by connecting a potential free switch . A signal will start the unit, although ac-cording to the schedule the running mode should be Off . The speed of the fans can be set in a separate schedule for extended running . The unit will run for the set time – 1 hour or more hours (factory setting is 1 hour) . When activated, the unit will run for the number of hours that you have set in the program from the hand terminal . For changes – See the Time User Manual .

If the extended running Time is set to zero, the air handling unit will run as long as the signal is set .

3.3.8 Free Cooling – Activation (option)This function is used during the summer to cool the building during the night using cool outdoor air, there-by reducing the need for cooling during the day and saving energy .

Free cooling is started at midnight if all timer channels are Off and the daytime outdoor temperature has been higher than a settable value (factory setting 20 ºC) . The unit is started and will run for at least 3 minutes .

However, the fans are not started if the unit is not set on normal speed according to the timer channels for the following day .

16

Function

Stop conditions: Free cooling stops at 6 o’clock in the morning or if the outdoor temperature rises about a settable value (factory setting 18 ºC) or if the room temperature falls below a settable value (factory setting 20 ºC) . The free cooling function has reference to an outdoor and room temperature sensor inside the unit .

3.3.9 Cooling recovery in output block Y4 (option)If the extract air temperature is a settable amount (fac-tory setting 2 ºC) lower than the outdoor temperature, cooling recovery by the heat exchanger is activated, if the actual room temperature exceeds the set point temperature .

The heat exchanger signal is reversed to give increas-ing cooling recovery on increasing demand . The Cool-ing Recovery function has reference to the exhaust temperature sensor inside the unit .

In the illustration the regulation sequence of the ca-pacity for the Cooling Recovery is added to the basic sequences, and the Cooling Recovery is activated for the capacity output block Y4 .

3.3.10 Change over coil regulation Heating or cooling capacity must be controlled by the same valve with a modulating valve motor . The valve and the valve motor are not included from Systemair . As standard the system is set up to operate the valve motor via a 0-10 Volt DC signal and 24 Volt AC power supply .

A box mounted on the side of the coil cabinet will transfer the relevant control signal for heating or cool-ing to the valve motor . Cable for the box must be con-nected in the switchboard at the site (has been tested before shipment) . As standard the Systemair control system is set up to control the demand for hot or cold water for the change over coil . As an alternative heat-ing or cooling operation can be selected by an exter-nal thermostat with a potential free contact set (not included from Systemair) .

CoolingY3

Heat exch.Y2

Heat exch.Y4

HeatingY1

0%

100%

Output signal

Y3 Y4 Y2 Y1 Heat demand0%

100%

65%

34%

30%

Controller signal


Start-up and test

3.4 Start-up and control

3.4.1 Checklist before initial start-upExternal components • Are the valve and valve motor installed correctly? • Is the circulation pump installed correctly? • Water in the coil and circulation pump?if VAV: • Are the pressure transmitters installed correctly?Main power supply • Connected correctly? (3x400 V, Neutral, Ground)Ducts • Are all ducts installed?Test of control voltage • Test of 24 AC between the terminals 58 and 59

at the terminal block X3 on the main board • Test of 24 DC between the terminals 58 and 69

at the terminal block X3 on the main board Dampers • Do dampers open as required?Valves • Does the valve open as required?Recovery • On or off as required?Filter guards • The set point on the mechanical guards

according to customer-prefered values

3.4.2 Start and stop conditions and sequenceThe unit is regulated from the controller, and the clock and calendar must be set with the buttons on the hand terminal – see The TIME User manual – Calendar settings (time, date, weekday) . Schedules are fac-tory set and appear in the Commissioning report (last pages of this manual) . In the display you will see the Running mode – Auto, and if the factory set schedule does not lead to the mode – On, you must select the menu – Hand/Auto (see the TIME User manual – Run-ning mode Auto/On/Off), and set the Running mode to On . The dampers will open and the fans will start after 60-120 seconds .

The modes for the unit: Off = Unit is stopped Auto = Unit is running according to

schedule settings On = Unit is running because it is switched

on from the Menu – Running mode Auto/On/Off

You can change the schedules with the buttons on the hand terminal . You need a password to change the schedule .

3.4.3 Constant Airflow Volume – CAVThe factory setting in m³/h according to project data . Change of the setting is described for the normal conditions and for the reduced conditions in the TIME User Manual – Setting the flows .

3.4.4 Variable Air Volume – VAV (Constant pressure in the ducts) The factory setting in Pa appear in the Commission-ing report (last pages of this manual) . Change of the setting is described for the normal conditions and for the reduced conditions in the Corrigo E-User Manual . Please download this manual from www .regin .se . Increase or decrease the duct pressure to meet the building specification .

3.4.5 Temperature settingThe factory setting appear in the Commissioning re-port (last pages of this manual) . Change of the setting is described in the TIME User Manual – Setting of room temperature . Increase or decrease the tempera-ture setting .

3.4.6 AlarmsIf an alarm condition occurs, the Alarm LED on the hand terminal will flash . The LED will continue to flash as long as there are unacknowledged alarms . Unac-knowledged alarms are logged in the alarm list . The list shows the type of alarm, date and time for the alarm and alarm class – A, B or C: Alarm type A will stop the fans and close the

dampers or switch the unit to a special mode ac-cording to the configuration .

Alarm type B is only to inform the users about a failure, and the unit is still running as well as pos-sible .

Alarm type C – only to inform the user that the unit has been switched away from automatic run-ning mode to manual control .

Permanent red light for acknowledged alarm, but the alarm is still active, because the reason is not yet eliminated . The navigation in the alarm protocol is described in the TIME User manual – Alarm, block, acknowledge .

18

Start-up and test

3.4.7 Access rights – passwordsThere are 3 different log-on levels:• Basic level (no password) – read-only access to all

settings and parameters• Operator level (password) – read/write access to all

settings and parameters, but no access right to the configuration of the system

• System level which has the highest authority (special password) – full read/write access to all settings and parameters (also configuration of the whole system)

NB! The ordinary User is informed about the pass-word to the System level in the ordinary TIME User manual, because this password is necessary, when the user want to change; • Duration for the extended running• Settings in the schedule (start, stop, size of airflow)• Setting of min/max supply air temperature• Setting of airflows• Setting of free cooling (temperatures for start and

stop)

A consequence of the fact that the ordinary user knows the password to the System level is that the ordinary user by mistake is able to damage the funda-mental configuration of the system and to change the system to a degree where the system is blocked, and it is impossible to start and use the ventilation at all . A skilled technician is able to change the password .


Elec. installation - Connection of External Components

3.5 External connectionsRef .gate In/Out RegulatorTerminal block X2

Temperature sensor extract – Alarm – Extended run-ning – Temperature sensor outdoor air – Start cooling – Alarm cooling – Cooling Y3 – Flow sensor Supply air DX cooling – Circulation pump heating – Temperature frost protection – Heating Y1 – Pressure transmitter extract – Temperature sensor supply air – Pressure transmitter supply airSee wiring diagrams on www .systemair .dk

20

Control system components

Number Components Used in TIME model

Abbreviation Description TIME C TIME Q TIME C TIME Q

Board with regulator Corrigo E28 1 1 10-40

Hand terminal with display for Corrigo E28

1 1 E-DSP-10 10-40

GP1 - GP2 Pressure guard, filter 2 2 DTV 500 OEM 10-40

GT1 & GT4 Temperature sensor PT 1000 with bracket

2 2 ETF-598 10-40

GP3 - GP4 Pressure transmitter 2 2 PTH - 3202 10-40

GTF Temperature sensor PT 1000 for frost protection of heating coil

1 1 ETF-1198SR 10-40

GTF1 Temperature sensor PT 1000, de-icing plate heat exchancer

0 1 ETF-598 10-40

ST3 Damper motor, modulating for by-pass damper

0 1 SM24A-SR, 10-40

VVX Rotor speed control1 0

Emotron EMX-R-15 10-30

Emotron EMX-R-25 40

GV Rotor guard 1 0 MPG 9-A-130 10-40

ST1 & ST2 Damper motor, spring-return for outdoor, extract or exhaust air

2 2 AF24 10-40

Alternative ST1 & ST2

Damper motor, ON/OFF for outdoor, extract or exhaust air

2 2 SM24A 10-40

SVV Motor for Kvs 1,6-10 valves 1 1 LR24-SR

SVV Motor for Kvs 1,6-DN32 valve 1 1 NR24-SR

2-way control ball valve, Kvs 1,6 DN15, external thread

1 1 R411 Calculated 10-40

2-way control ball valve, Kvs 2,5 DN15, external thread


2-way control ball valve, Kvs 4 DN20, external tread


2-way control ball valve, Kvs 6,3 DN20, external tread






Frequency converter 2 2 FXDM3 .6 (Flat) 10-15

Frequency converter 2 2 FXDM5 (Flat) 15-20



Frequency converter 2 2 FXDM12 (Flat) 30-40

Frequency converter 2 2 FXDM16 (Flat) 40

3.6 Standard components

3.7 OptionsGT2 Temperature sensor PT 1000

with bracket for mounting1 1 ETF-598 10-40

GT3 Temperature sensor PT 1000 with bracket for mounting

1 1 ETF-598 10-40

BT Fire temperature sensor 2 2 TMGW 2A 10-40


Terminals

3.8 Terminals

Terminals X1

Terminal Description In/out

1 Supply fan start 1 24V AC

2 Ref . for supply fan start 1 24V AC

13 Temperature sensor room, (extract air)

PT1000

14 Ref . for temperature sensor room, (extract air)

15 Temperature sensor, extract air PT1000

16 Ref . for temperature sensor, extract air

17A Pressure guard, extract filter

18A Ref . for pressure guard, extract filter +24V DC

19 Ref . for fire alarm supply 70 °C +24V DC

20 Fire alarm supply 70 °C

21 Ref . for fire alarm extract 40 °C

22 Fire alarm extract 40 °C

23 Supply fan OK indication/alarm

24 Ref . for Supply fan OK indication/alarm

+24V DC

29 Supply fan, speed of motor 0-10V DC

30 Ref . for supply fan, speed of motor

Terminals X2


3 Exhaust fan start 1 24V AC

4 Ref . for exhaust fan start 1 24V AC

31 Exhaust fan, motor speed 0-10V

32 Ref for Exhaust fan, motor speed

33 Speed of rotor/bypass damper plate heat exchanger

0-10V

34 Speed of rotor/bypass damper plate heat exchanger

35 Power by-pass damper motor, plate heat exchanger

24V AC

1U2 Power rotary heat exchanger 230 V

1N2 Power rotary heat exchanger 0 V

25 Exhaust fan OK indication/alarm

26 Ref . For exhaust fan OK indication/alarm

24V AC

50 All alarms 24V ACN

51 Ref . for all alarms 24V ACL

52 Start cooling 24V ACN

53 Ref . for start cooling 24V ACL

Terminals X2


60 Temperature sensor, supply PT1000

61 Ref . for temperature sensor, supply

62 Temperature sensor, frost protection heating coil

PT1000

63 Ref . for temperature sensor, frost protection heat . coil

64 Pressure transmitter control, supply 0-10V

65 Ref . for pressure transmitter control, supply

65A Power for pressure transmitter, supply

24V AC

66 Extended running 1/1, start

67 Ref . for extended running 1/1, start 24V DC

68 Alarm, cooling

69 Ref . for alarm, cooling 24V DC

70 Motor on valve, heating Y1, control 0-10V

71 Ref . for motor on valve, heating Y1, control

72 Power, motor on valve, heating Y1 24VAC

73 Motor on valve, cooling Y3, control 0-10V

74 Ref . for motor on valve, cooling Y3, control

75 Power, motor on valve, cooling Y3 24VAC

76 Flow sensor supply air DX cooling

77 Ref . for flow sensor supply air DX cooling

24V DC

78 Alarm rotor guard, rotary heat exchanger / de-iceing plate heat exchanger

94 Ref . for alarm rotor guard, rotary heat exchanger / de-iceing plate heat exchanger

+24V DC

79 Ref for temperature sensor deicing

88 D– RS485 exhaust fan

89 D+ RS485 exhaust fan

90 GND RS485 exhaust fan

91 24V RS485 exhaust fan

2U2 Power circulation pump heating 230V AC

2N2 Power circulation pump heating 230V ACN

3U2 Power light 230V ACL

3N2 Power light 230V ACN

4U2 Light 230V ACL

4N2 Light 230V ACN

22

Terminals

Terminal X3


5 Damper motor, outdoor air 24V ACN

6 Ref . for damper motor, outdoor air 24V ACL

8 Damper motor, extract air 24V ACN

9 Ref . for damper motor, extract air 24V ACL

10 Power for damper motor, extract air 24V ACL

17 Pressure guard, supply filter

18 Ref . for pressure guard, supply filter +24V DC

54 Temperature sensor, outdoor air PT1000

55 Ref . for temperature sensor, outdoor air

57 Pressure transmitter control, exhaust 0-10V

58 Ref . for pressure transmitter control, extract

59 Power for pressure transmitter control, extract

24V AC

3.9 Communication – Input and Output list for terminals on the Corrigo E28I/O no: Abbreviations: Description:

AI1 GT4 Room temperature sensor

AI2 GT3 Extract air temperature sensor

AI3 GT2 Out door temperature sensor

AI4 GP4 Pressure transmitter, exhaust (only cooling recovery)

AO1 RCT Speed of motor, supply

AO2 RCF Speed of motor, exhaust

AO3 VVX/ST3 Speed of rotor/ By-pass damper on plate heat exch .

AO4 SVV Valve with motor, heating coil

AO5 SVK Valve with motor, cooling coil

UI1 GT1 Supply temperature sensor

UI2 GTF Temperature sensor, frost protection heating coil

UI3 GP3 Pressure transmitter, supply air

UI4 VVX/GTF1 Alarm, Rotor guard / De-icing of the plate heat exchanger

DI1 GP1 + GP2 Alarm, Pressure guard, filter

DI2 BT Alarm, Fire

DI3 RCT Alarm, Frequency converter/motor, supply

DI4 RCF Alarm, Frequency converter/motor, exhaust

DI5 X51 Frost thermostat, capilar tube sensor on heating coil (option)

DI6 Extended running

DI7 Alarm, Cooling

DI8 GP6 Alarm, Flow sensor – Supply air (only DX cooling)

DO1 TF Frequency converter/motor, supply

DO2 FF Frequency converter/motor, exhaust

DO3 ST1 Damper, supply air

DO4 ST2 Damper, extract air

DO5 Circulation pump for the hot water heating coil

DO6 Alarm to an external system

DO7 Start cooling

Terminal X4


27 Frost themostat

28 Ref . for Frost themostat +24V DC

80 Frost thermostat stop supply fan

81 Ref for Frost thermostat stop supply fan

82 Extra 24 V AC 24V AC

83 Extra 24 V AC 24V AC


Input and output list

download from www .regin .se . The E Tool software is free of charge . The alternative is to connect the con-troller to a local network . The controller is able to com-municate with an OPC server via the EXOopc Driver .This version of the controller with TCP/IP has no RS485 port .

3.10.2 Communication to BMS systems with LONThe version of the controller with LON communication port is designed according to the LonMark guidelines . The Lon interface variable list and xif file is available for download from www .regin .se . The controller is configured by Systemair with factory settings and pa-rameters . Modification is made from the hand terminal with display and buttons or via the software E Tool on a PC connected via the RS485 port on the controller . The E Tool software is ready for download from www .regin .se – free of charge .

3.10.3 Communication to BMS systems with MODBUSThe controller can communicate with MODBUS via the RS485 port on the controller . The customer must install the software called E Tool in the BMS system (Building Management system) for the communica-tion with the controller, and this software is ready for download from www .regin .se and the software is free of charge . The controller is configured by Systemair with factory settings and parameters . Modification takes place from the hand terminal with display and buttons or via the software E Tool in the BMS system .

Analogue inputs (AI)Analogue inputs must refer to an A-gnd terminal placed in the same terminal block on the Corrigo E28 as the input being wired . AI can be used for either PT 1000 temperature sensors or for 0-10 V DC analogue input signals .

Digital inputs (DI)Digital inputs must refer to C+ on terminal 4 on the Corrigo E28 . Digital inputs may only be wired to volt-age-free contacts . Any external voltage applied to a DI may harm the regulator .

Universal inputs (UI)A universal input can be configured to act as either an AI or as a DI . Universal inputs must refer to either an A-gnd or a C+ terminal depending on the configura-tion .

Analogue outputs (AO)Analogue outputs must refer to the A-gnd terminal placed in the same AO block on the Corrigo E28 . All analogue outputs can be individually set to any one of the following signals: 0–10 V DC 2–10 V DC 10–0 V DC 10–2 V DC

Digital outputs (DO)Digital outputs must refer to G on terminal 10 on the Corrigo E28 . The outputs will deliver 24 V AC, 0 .5 A continuously . The outputs cannot be used to drive DC relays .

3.10 Communication to BMS systemsThe controller can work as a stand-alone system with-out any support from other controllers . The controller is built in 3 different versions, and each version has a pre-installed communication system based on one of the alternatives: • TCP/IP or • LON or • MODBUS

3.10.1 Communication to BMS systems with TCP/IPThe controller contains an 8 pole socket for the con-nection of the controller to a PC with a regular crosso-ver Ethernet network cable . The customer must install the software called E Tool in the PC for communica-tion with the controller, and this software is ready for

24

Maintenance

4. Maintenance

4.1 Stop the unit and switch off the main power supply before maintenanceNB! Please stop the unit manually on the cable-con-nected hand terminal with display and buttons, and please let the unit complete the stop sequence before the main power is switched off .Find the menu – Hand/Auto – on the hand terminal, and find the menu Running mode, enter your pass-word – see the alternatives Auto, On or Off in the dis-play and please select Off and press the button – OK (further information – see the TIME User manual) . In the stop sequence the water flow in the heating coil is turned to the off-mode and the fans are switched off . Then the damper motors are activated to close the dampers . After approximately 3 minutes the unit has completed the stop sequence, and then it is OK to switch off the main power by turning the main switch on the front of the board to – Off . Lock the switch with a padlock . With the main switch in the position – Off, the frost protection sequence of the after heating coil is not activated .

4.2 Maintenance scheduleTo ensure the best possible indoor climate it is im-portant that the performance of your AHU does not deteriorate because of neglected service and mainte-nance . Insufficient maintenance is the main reason for reduced efficiency, increased running costs and even break downs . Neglected service and maintenance can affect the safety of the ventilation system . It is therefore strongly advised that maintenance of the whole ventila-tion system is carried out on a regular basis . The few necessary maintenance procedures required to ensure optimal AHU running performance are listed below .

The design and construction of the AHU ensures that necessary maintenance is reduced to an absolute minimum . Large inspection doors ensure quick and easy access to all components requiring inspection and maintenance . Below is a simple summary as a guide to the frequency of the necessary maintenance work on the AHU . The remaining pages take a closer look at the maintenance of the individual components in the AHU . The service intervals stated are intended as a guide only, and apply for operation with normal air quality for comfort ventilation . In particularly dusty or humid operation conditions, or where the air is aggressive, shorter maintenance intervals may be re-quired .

Switch off the unit on the hand terminal

Switch off the power supply on this main switch, when the unit has com-pleted the stop sequence after ap-proximately 3 minutes and lock the switch with a padlock before service and maintenance.

Inspection and check

Maintenance work to be carried out


Maintenance

To be carried out once a year

To be carried out when the recommended pressure drop is exceeded

To be carried out after every 5000 running hours or at least once a year

To be carried out four times a year

Air Handling Unit Clean the AHU

Check the seals and closing mechanisms

Dampers Check the air-tightness

Filters Replace the filter and check the seals in the AHU

Rotary heat exchanger Check the condition of the rotor and that it turns easily

Check the brush seals

Check the Varimatic drive system

Check and tighten the belt

Plate heat exchanger Check the heat exchanger

Check the air-tightness of the by-pass damper

Clean the drip tray, drain and water trap

Heating coil Check the condition of the coil

Vent the coil

Check the frost protection sequence

Cooling coil Check the condition of the coil

Vent coil which use water and brine as cooling medium

Clean the drip tray, drain and water trap

Check the droplet eliminator

Fan Check the fan impeller

Check the anti vibration mountings and flexible connections

26

Maintenance

4.3 Air Handling UnitThe unit should be cleaned once a year when operat-ing with normal air quality for comfort ventilation with no special hygiene requirements . Clean the unit with a dry cloth, or use water mixed with a non-corrosive cleaning medium . Any corrosion i .e . at the filters should be cleaned off immediately, and the surface treated .

In special operating conditions, where the air is ag-gressive or very humid, for example, or where there are special hygiene requirements, the unit must be cleaned more frequently as required . Cleaning medium and method should be adapted to the relevant condi-tions .

Any corrosion should be cleaned off immediately, and the surface treated . Grilles for air intake and exhaust air outlet are to be cleaned at least once a year to prevent blockage . Closing mechanisms are to be lubri-cated at least once a year . Synthetic door hinges are service free . Seals around inspection doors are to be cleaned at least once a year and are to be checked for leakage . It is recommended to treat the seals with a moisture repellent agent . Connecting pieces for the unit sections, including the Disc-Lock types, are to be checked for tightness at least once a year . All seals are to be inspected at least once a year and are to be repaired if necessary .

4.4 DampersRubber seals between the damper blades themselves and between the damper blades and the frame are to be checked once a year . These seals are not to be lubricated or treated in any other way . Each damper blade is connected by a pivoting system . The steel rods and brass bushes do not require lubrication .

The damper blades are fitted with synthetic bearings requiring no lubrication . Air-tightness of the damper, when the damper motor is in the closed position, must be checked visually once a year . The damper motor is to be adjusted if the damper does not close tightly .

4.5 FiltersThe intervals for the replacement of the filters are highly dependent on the concentration of dust in the air passing through the filters . The filter guards must be set to recommended pressure for the replacement of the filters . When the pressure is exceeded, an alarm is transmitted to the regulator and the alarm will be visible on the hand terminal – a red lamp as well as a text in the display . It is time to replace the filters .


Maintenance

Release the bagfilter cells by activating the handles and pull the filter cells out of the unit casing . The frame profiles are to be cleaned and all seals checked for damage . The handles and locking guide rails are also to be checked to ensure that they can operate unob-structed . The new filter bags should be pushed care-fully into the unit in order to ensure that they are sealed properly . The various filter sizes should be placed in an order corresponding to the way in which the unit is di-vided up, and the filters should have vertical bags .

4.6 Rotary heat exchanger

4.6.1 RotorThe rotor is to be checked at least once a year . To ease inspection and maintenance the rotor can be pulled out of the unit housing on smaller AHU sizes . Check that the rotor can turn freely and easily . This can be done by removing the belt drive at the motor and then turning the rotor manually with a hand on the peripheral rotor casing . At the same time the brush seals are to be checked for damage . The bearings are factory lubricated and do not require any service lubri-cation . During operation the rotor can become dirty . The rotor can be cleaned by compressed air . Cleaning must be carried out with care to avoid deformation and damage on the rotor material .

4.6.2 Motor and belt driveThe bearings are factory lubricated and do not require any lubrication . The belt drive is to be checked four times a year for correct tightness and for damage .On TIME 10-30 the rotor is fitted with an elastic belt and supplied with a reserve belt on the rotor . This belt does not require service and cannot be shortened . A new belt can be fitted using a welding machine for the assembly of flexible plastic . On TIME 40 the rotor has a V-belt with a belt connec-tor . If the belt is no longer tight, it must be shortened to a length which enables the springs on the motor base frame to keep the belt under tension . If new screws are used for the belt connector, they must not have a length which exceeds the thickness of the belt and connector . Remove the excess lenght, if any, with a file .

4.6.3 Varimatic systemA test switch is positioned behind the cover of the electronic box . The test switch is to be activated once a year in order to ensure that the system functions correctly . In the test situation the rotor must rotate slowly and gradually increase up to maximum speed .

28

Maintenance

4.7 Plate heat exchangerOnce a year the edges of the heat exchanger plates are to be checked for dust, grease and damage . If there is dust on the edges of the plates, remove it with a soft brush . If grease or other such substances are present, then the edges must be washed using grease dissolving detergents . The heat exchanger can be cleaned using a high pressure cleaner with a fine spray nozzle, or by blowing through with compressed air . On the opposite side of the exchanger dirt and water can be removed with a water vacuum cleaner . In order to avoid damaging the plate surfaces, wash-ing and cleaning must be carried out with the utmost care . The surfaces must never be scraped with hard objects . When the heat exchanger is fitted into an AHU which handles air with grease particles, such as exhaust air from kitchens, the grease filter installed before the AHU must be cleaned every day . The AHU must be stopped when the grease filter has been re-moved .

4.7.1 By-pass damperThe damper blades are fitted with synthetic bearings requiring no lubrication . Each damper blade is con-nected by a pivoting system . The steel rods and brass bushes do not require lubrication .Air-tightness of the dampers, when the damper motor is in the closed position, must be visually checked once a year . The damper motor is to be adjusted if the damper does not close tightly .

4.7.2 Condense water drainClean the drip tray beneath the heat exchanger, as well as the drain and the water trap once a year .

4.8 Heating and cooling coilsAfter a few years dust particles can accumulate on the surface of the coil . This can reduce the efficiency of the coil . The coil can be cleaned using a high pressure cleaner with a fine spray nozzle, or by compressed air . Cleaning must be carried out with the utmost care to ensure that the coil fins are not damaged . Coil and pipes must be vented once a year because air in the system will reduce the capacity of the coil significantly .

4.8.1 Heating coil – frost protectionThe frost protection must be tested at least once a year before the winter . Cool down the sensor until the alarm is transmitted to the regulator and the alarm is visible on the hand terminal . Check that the protec-tion sequence is OK – fans stop, dampers close, valve opens fully .

Beware of hot heating coil and pipe surfaces. Remember to turn off the supply of hot water before the maintenance.


Maintenance

4.8.2 Cooling coilOnce a year clean the drip tray beneath the cooling coil, as well as the drain and the water trap . If a drop-let eliminator has been fitted to the cooling coil, this must be checked once a year and cleaned if neces-sary .

4.9 FansFor the smaller sized units the motor and fan are as-sembled on guide rails allowing easy extraction from the AHU . Dust can accumulate on the fan impeller which can cause imbalance and vibrations . The fan impeller must therefore be checked once a year and cleaned, if necessary . Anti vibration mountings and flexible connections should be checked at the same time . If the anti vibration mountings are damaged in any way they must be replaced .

4.9.1 MotorThe motors are fitted with factory lubricated bearings that require no further lubrication .

4.10 Fire alarmThe fire alarm must be tested at least once a year . If fire thermostats are installed, they must be heated until the alarm is transmitted to the regulator and the alarm is visible on the hand terminal – a red lamp as well as text in the display . Reset the fire thermostats manually .

4.11 Battery backup in the controllerAn alarm for low battery capacity announces that the battery must be replaced very soon . With less than 10 minutes from the old battery is removed until a new battery is installed, no data are lost . A backup capaci-tor ensures that all data are kept . Expected battery life is about 5 years . Lithium cell battery type CR2032 .

The battery is to the right.

30

Commissioning report

5. Commissioning report

Company

Responsible

Customer Date Installation

Object / Unit Item no . Installation address

Model / size Series no .

Present time and date set . Yes___ or No___ Week schedule set . Yes___ or No___

External connections such as sensors, motors on valves, external alarms etc . done . Yes___ or No___

Function Preset value Set value

Temperature (°C).

Control function Temp . Room (extract) * Supply ❏ Extract ❏ Room (extract) ❏

Set point 22 °C ____ °C

Outdoor compensating (supply air controlling) Not activated

Outdoor/supply temp . Not activated

Point 1,2 and 3** 0 / 0 0 / 0 0 / 0 / / /

Point 4,5 and 6** 0 / 0 0 / 0 0 / 0 / / /

Point 7 and 8** 0 / 0 0 / 0 / /

Min . supply set point 14,0 °C ____ °C

Max . supply set point 28,0 °C ____ °C

Switching point, between cascaded supply and room temperature control function Not activated ____ °C

* Preset cascaded room temperature control (based on room temperature sensor mounted inside the unit in the extract section before filter and heat exchanger) .

** See the TIME factory test report (delivered with the unit) .


Air flow

Fan control Air flow (m3/h) CAV ❏* Pressure (Pa) VAV ❏* CO2 (ppm) ❏*

Air flow (m3/h) CAV ❏ Pressure (Pa) VAV ❏ CO2 (ppm) ❏

Set point Normal Supply fan * Extract fan * Supply fan ___ Extract fan ___

Set point Reduced Supply fan * Extract fan * Supply fan ___ Extract fan ___

Outdoor compensation Lower point ** °C Extract fan ** m3/h, Pa Upper point ** °C Extract fan ** m3/h, Pa

Lower point __ °C Extract fan __ m3/h, Pa Upper point __ °C Extract fan __ m3/h, Pa

Only reduced fan speed when outdoor is below ____Not activated ____°C

* See the TIME factory test report (delivered with the unit)** Not activated



Impeller K factor

*

Air flow X factor

*

Pressure transmitter

AHU MotorAir flow

m3/h-CAVPressure Pa-VAV

TIME 10 2 x (1,1 kW - 2,6 A) 2 x (1,5 kW - 3,3 A)

75 0,5 0-2500 Pa 0-300 Pa

TIME 15 2 x (1,5 kW - 3,3 A) 2 x (2,2 kW - 4,4 A)

95 0,5 0-2500 Pa 0-300 Pa

TIME 20 2 x (2,2 kW - 4,4 A)2 x (3,0 kW - 6,6 A)

154 0,5 0-2500 Pa 0-300 Pa

TIME 25 2 x (3,0 kW - 6,6 A) 2 x (4,0 kW - 8,5 A)

197 0,5 0-2500 Pa 0-300 Pa

TIME 30 2 x (4,0 kW - 8,5 A)2 x (5,5 kW - 11,4 A)

262 0,5 0-2500 Pa 0-300 Pa

TIME 40 2 x (5,5 kW - 11,4 A)2 x (7,5 kW - 15,2 A)

308 0,5 0-2500 Pa 0-300 Pa

* Conversion of pressure to m3/h


Cooling

Control function cooling Not active ❏ 0-10V ❏ On/off ❏ Not active ❏ 0-10V ❏ On/off ❏

On/off function 1 step 2 step 3 step binary step 1 step ❏ 2 step ❏ 3 step ❏ binary step ❏

Number of binary steps 1 ❏ 2 ❏ 3 ❏ 1 ❏ 2 ❏ 3 ❏

Lowering of min . control temp ., supply air, dx cooling * °C

____°C

* See the Corrigo E Ventilation Configuration Report (delivered with the unit) .

Week scheduler settings – See the preset values in the

Corrigo E Ventilation Configuration Report (delivered with the unit) .

Weekday Period Normal Reduced

Mon . 1 : - : : - :

2 : - : : - :

Thu . 1 : - : : - :

2 : - : : - :

Wed . 1 : - : : - :

2 : - : : - :

Thurs . 1 : - : : - :

2 : - : : - :

Fri . 1 : - : : - :

2 : - : : - :

Sat . 1 : - : : - :

2 : - : : - :

Sun . 1 : - : : - :

2 : - : : - :

Holidays (month.day) Holidays (month.day) Holidays (month.day) Holidays (month.day)

1 . . - . 7 . . - . 13 . . - . 19 . . - .

2 . . - . 8 . . - . 14 . . - . 20 . . - .

3 . . - . 9 . . - . 15 . . - . 21 . . - .

4 . . - . 10 . . - . 16 . . - . 22 . . - .

5 . . - . 11 . . - . 17 . . - . 23 . . - .

6 . . - . 12 . . - . 18 . . - . 24 . . - .

32



Frost Protection – heating coil

Frost limit temperature: See Alarm settings/Low frost guard temp

See Alarm settings/Low frost guard temp

Set point when stopped (off mode): (return water)

25 °C ____°C

P-band when running (on mode): 5 °C ____°C

Extended running

Extended operation 60 min . ____ min

Night cooling (option)

Mode: On (if included) On ❏ Off ❏

Run when day outdoor temp . was higher than: 20 °C ____°C

Stop when night outdoor temp . is higher than: 18 °C ____°C

Stop when night outdoor temp . is lower than: 5 °C ____°C

Stop when room temp . is lower than: 20 °C ____°C

Cooling recovery (option)

Mode: On (if included) On ❏ Off ❏

Start limit: 2 °C ____°C

Control on demand

CO2 control Not activated OffOn when active time channelOn

CO2 control typeDamperFan




Fire function (option)

Damper function (fire): On (if included) On ❏ Off ❏

Normally closed contacts Damper normally closed contacts ❏

Damper normally opened contacts ❏

Extraction when fire alarm: Not activated On ❏ Off ❏

Fire input:Not activated

Normally opened ❏

Normally closed ❏

Fire damper exercise:

Not activated

No exercise ❏

Exercise withventilation running ❏

Exercise with ventilation stopped ❏

Fire damper run time: Not activated s

Fire damper interval: Not activated days

Fire damper exercise hour Not activated h

Heat Pump (HW unit)

Pump stop mode (EL unit Off): Not activated On ❏ Off ❏

Pump stop delay: min

Stop pump at temp: °C

Pump stop hysteretic: °C

Pump exercise hour:

Cool Pump

Pump stop delay Not activated min

General

Heat Pump IndicationNot activated

Motor Protection

Run Indication

Cool Pump IndicationNot activated

Motor Protection

Run Indication

34


5.1 Alarm settingsAlarm settings Preset value Set value Alarm settings Preset value Set value

1. Supply Air Fan is out of operation 18. High room temp

ClassDelay

Stop ventilation unit if alarm active

B 120 s .

No

Class Delay

Stop ventilation unit if alarm active High room temp

B30 min .

No30 ˚C

2. Exhaust Air Fan is out of operation 19. Low room temp

ClassDelay


B 120 s .

No

ClassDelay

Stop ventilation unit if alarm activeLow room temp

B30 min .

No10 ˚C

3. P1-Heater is out of operation 20. High exhaust air temp

(Applies to HW units) ClassDelay


B 5 s . No

Class Delay

Stop ventilation unit if alarm active High exhaust temp

B30 min .

No30 ˚C

4. P1-Cooler is out of operation 21. Low exhaust air temp

ClassDelay


B 5 s . No

ClassDelay

Stop ventilation unit if alarm activeLow exhaust temp

B30 min .

No10 ˚C

6. Filter guard 22. Electric heating is overheated

ClassDelay


B 180 s .

No

(Set to Off on HW units) Class Delay


A0 s .Yes

8. External frost guard 23. Frost risk

ClassDelay


A 0 s .Yes

(Set to Off on EL units) ClassDelay


Disabled 0 s .No

10. Fire alarm 24. Low frost guard temp

ClassDelay


A 0 s .Yes

(Applies to HW units) Class Delay

Stop ventilation unit if alarm activeFrost limit

A0 s .Yes7 ˚C

11. External switch 25. Low efficiency

ClassDelay


C0 s .Yes

ClassDelay

Stop ventilation unit if alarm activeLow efficiency

B30 min .

No50%

12. External alarm 26. Sensor error

ClassDelay


B0 s .No

ClassDelay


B5 s .No

13. Supply Air control error 28. Rotation guard exchanger

ClassDelay

Stop ventilation unit if alarm activeMax diff between set point and supply

B30 min .

No10 ˚C

ClassDelay


B20 s .No

14. High supply air temp 29. Fire damper is out of operation

ClassDelay

Stop ventilation unit if alarm activeHigh supply air temp

B 5 s .No

30 ˚C

ClassDelay


B90 s .No

15. Low supply air temp 30. Supply Air Fan Pressure control error

ClassDelay

Stop ventilation unit if alarm activeLow supply temp

B 5 s .No

10 ˚C

ClassDelay

Stop ventilation unit if alarm activeMax diff between set point and actual pressure

Disabled30 min .

No50 pa



Alarm settings Preset value Set value Alarm settings Preset value Set value

31. Exhaust Air Fan Pressure control error 39. Manual Exhaust Air Fan freq control

ClassDelay

Stop ventilation unit if alarm activeMax diff between set point and actual pressure

Disabled 30 min .

No50 pa

ClassDelay


C0 s .No

32. Supply Air Fan external operation 40. Manual heater control

ClassDelay


C120 s .

No

ClassDelay


C 0 s .No

33. Exhaust Air Fan external operation 41. Manual cooler control

ClassDelay


C 120 s .

No

Class Delay


C 0 s .No

34. Ventilation stopped 42. Manual exchanger control

ClassDelay


C0 s .No

ClassDelay


C0 s .No

35. Manual supply air control 43. Manual P1-Heater

ClassDelay


C0 s .No

(Applies to HW units) Class Delay


C0 s .No

36. Manual Supply Air Fan mode 44. Manual P1-Cooler

ClassDelay


C0 s .No

Class Delay


C0 s .No

37. Manual Supply Air Fan freq control 46. Manual fire damper

ClassDelay


C0 s .No

ClassDelay


C0 s .No

38. Manual Exhaust Air Fan mode 47. Internal battery error

ClassDelay


C0 s .No

ClassDelay


A0 s .No

Indholdsfortegnelse

Systemair A/S

xx

xx

xx

TIME (uk) V.05.04.2008

Master

TIME InstallationMaintenanceOperation UK 04 2008

Documents

Transcript of TIME InstallationMaintenanceOperation UK 04 2008