VEX140 Horizontal - EXHAUSTO

EXHAUSTO A/SOdensevej 76DK-5550 Langeskov

Tel. +45 65 66 12 34Fax +45 65 66 11 [email protected]

3001640-VEX140H-HCE-2011-01-01 Product Instruction

Closing damper, LS315-24, (LSA exhaust)

Closing damper, LS315-24, (LSF outdoor)

Closing damper, LSR315-24, with spring-return (LSFR outdoor)

The following accessories are supplied separately:

Serial no.:

Prod.order no.:

Sales order no.:

Unit supplied with (factory fitted):

Temperature sensor, EON-TS-DUCT

Temperature sensor, EON-TS-ROOM

CO2-sensor, EON-CO2

Airflow control

Humidity sensor, EON-RH

Icing detector

pieces, TOUCH-panel, EON-TOUCH-6

pieces, TOUCH-panel, EON-TOUCH-8

pieces, Constant pressure regulation,EON-PRESSURE

pieces, Fire thermostat, BT40



VEX140 Horizontal with Electric heating coil HCE

Electric heating coil HCE 140-7,2 kW

Electric heating coil HCE 140-14,4 kW

Product information .................... Section 1 + 8

Maintenance............................... Section 6

Commissioning and operation.... Section 5 + 7

Electrical installation................... Section 4

Mechanical assembly................. Section 2 + 3

VEX100R A N G E

CROSS FLOW HEAT EXCHANGER

Mounting base, MS-VEX140H

Original instructions

VDI 6022

Closing damper, LSR315-24, with spring-return (LSAR exhaust)

x DISPLAY-panel (is by delivery placed in the connection box)

3001640-VEX140H-HCE-2011-01-01

1. Product information1.1 Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.2 Requirements for surroundings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2.1 Spatial requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.2.2 Requirements for underlying surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.2.3 Requirements for the duct work system........................................................ 7

1.3 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.3.1 The function of the air handling unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.3.2 The design of the air handling unit ................................................................ 8

1.4 Principal dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2. Handling2.1 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2.1 Passage through openings.......................................................................... 13

3. Mechanical assembly3.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1.1 Installation directly on the floor.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153.1.2 Installation on mounting base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.2 Condensation outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153.3 Hygieine (applies only to VEX100VDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.3.1 Measurement of pressure loss across filters (applies only to VEX100VDI) 17

4. Electrical installation4.1 The scope of the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184.2 Connection of the electrical supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.2.1 Fuses and supply cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194.3 Connection box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.3.1 Components in connection box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.3.2 Connection diagram for supply voltage and connection box....................... 214.3.3 Cable plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224.3.4 Terminal board for the connection box........................................................ 234.3.5 Connection of shielded cable to EON-BUS................................................. 24

4.4 Connection to terminals, EON external . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254.4.1 Connection of DISPLAY panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254.4.2 Connection of TOUCH panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254.4.3 Setting the address and function of the TOUCH panel ............................... 264.4.4 “On-demand” control via constant pressure regulation . . . . . . . . . . . . . . . . 274.4.5 “On-demand” control via CO2 measurement .............................................. 284.4.6 “On-demand” control via humidity measurement ........................................ 29

5. Commissioning and operation5.1 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305.2 Initial adjustment of airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.2.1 Measuring points for determining the airflow . . . . . . . . . . . . . . . . . . . . . . . 305.2.2 Balance (menu 514) .................................................................................... 315.2.3 Selection of airflow regulation method ........................................................ 325.2.4 Comfort setting in (menu 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345.2.5 Re-connection of EON modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345.2.6 Compensation of airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345.2.7 External compensation of airflow (menu 54) . . . . . . . . . . . . . . . . . . . . . . . . 355.2.8 CO2 compensation, (menu 55) ................................................................... 36

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3001640-VEX140H-HCE-2011-01-01

5.2.9 Humidity compensation of airflow (menu 56) .............................................. 375.3 Initial adjustment of temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.3.1 Temperature adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385.3.2 Limits for supply air temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395.3.3 Limits for indoor climate level ...................................................................... 405.3.4 Supply air temperature regulation ............................................................... 415.3.5 Room temperature regulation...................................................................... 42

5.4 Safety functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435.4.1 HCE safety functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435.4.2 Registration of icing in the cross-flow heat exchanger . . . . . . . . . . . . . . . . 435.4.3 De-icing function.......................................................................................... 445.4.4 Operating mode in the event of fire ............................................................. 455.4.5 BT, Fire thermostats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5.5 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465.5.1 List of EON modules connected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465.5.2 Language selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5.6 The DISPLAY panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 475.6.1 DISPLAY panel – QUICK GUIDE for the VEX100 range . . . . . . . . . . . . . 475.6.2 Using the DISPLAY panel ........................................................................... 485.6.3 Operating modes......................................................................................... 495.6.4 Switch between user modes (user/technician/specialist) ............................ 50

5.7 Setting the weekly clock – menu 423. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 515.8 The TOUCH panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.8.1 TOUCH panel – QUICK GUIDE for the VEX100 range . . . . . . . . . . . . . . . 535.8.2 The diodes .................................................................................................. 545.8.3 Using the TOUCH panel to adjust the indoor climate . . . . . . . . . . . . . . . . . 54

5.9 Setting the filter controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

6. Maintenance6.1 Measuring points for pressure, temperature and air-flow . . . . . . . . . . . . . . . 566.2 Maintenance chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

6.2.1 Cleaning the fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 596.2.2 Cleaning the heating coil ............................................................................. 606.2.3 Cleaning the cross-flow heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7. Troubleshooting7.1 Resetting alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 617.2 Trouble-shooting via the EON BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 627.3 Alarm list: Causes of errors and remedial measures. . . . . . . . . . . . . . . . . . . 63

8. Technical specifications8.1 Weight, Corrosion class, Motor dampers, etc. . . . . . . . . . . . . . . . . . . . . . . . . 668.2 Electric heating coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 688.3 Capacity diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 698.4 Parts list for ordering spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

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3001640-VEX140H-HCE-2011-01-01

Prohibition symbol Failure to observe instructions marked with a prohibition symbol may result in serious injury or death.

Danger symbolFailure to observe instructions marked with a danger symbol may result in personal injury and/or damage to the unit.

These instructions’area of use

These instructions apply to EXHAUSTO air handling units. Please refer to the separate product instructions for accessories and extra equipment.

These instructions must be fully observed to ensure personal safety, to protect the equipment and to ensure correct operation of the air handling unit. EXHAUSTO A/S accepts no liability for personal injury or material damage caused by failure to follow the guidelines and instructions in this manual when installing and/or using the product.

Accessories The checklist on the front of these instructions shows which accessories have been delivered with the air handling unit.

NB When retro-fitting accessories from EXHAUSTO, please update the list on the front cover.

Definition In the type designations, R stands for Right, which means that the supply air is to the right of the unit, as seen from the operating side. L (Left) indicates supply air on the left-hand side.

Drawings An indication in the bottom right-hand corner of the drawings in this manual states whether the unit shown is a Right or Left unit.

Warnings:Do not open …

the service doors before the electrical supply has been disconnected at the repair switch.

Not suitable for …The air handling unit is not to be used to transport solid particles, nor in areas where there is a risk of explosive gases.

No ductconnection

If one or more of the spigots is not connected to a duct:Fit the protective net to the spigots with a maximum mesh width of20 mm.

Lock down the VEX during operation

The VEX must always be locked down duringoperation:

• either using the locking cylinder in the handle. Remember to remove the key from the lock.

• or using a padlock via the built-in padlock fittings in the handle.

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3001640-VEX140H-HCE-2011-01-01

Designations in this manual

Component designation

Function Component designation

Function

HCE Electric heating coil TE11 Temperature sensor, extraction

TSA70 Overtemperature electric heating coil (automatic reset)

TE21 Temperature sensor, outdoor air

TSA90 Overtemperature electric heating coil (manual reset)

TE12 Temperature sensor, exhaust

GV1 Bypass damper TE22 Temperature sensor, supply

PDS1 Filter control, extraction EON DISPLAY DISPLAY panel

PDS2 Filter control, outdoor air EON TOUCH TOUCH panel

PDT1 Pressure measurement, cross-flow heat exchanger (icing)

EON TS ROOM/EON TS DUCT

Temperature sensor, room/extraction duct

AFC1 Airflow control, extraction EON CO2 ROOM/EON CO2 DUCT

CO2 sensor, room/extraction duct

AFC2 Airflow control, supply air EON PRESSURE Pressure sensor for constant pressure regulation

M1 Extraction fan motor EON RH ROOM Humidity sensor, room

M2 Supply motor LSF/LSFR Closing damper, outdoor air

TSA1 Overheating extraction fan motor LSA/LSAR Closing damper, exhaust

TSA2 Overheating supply motor BT40/BT50 Fire thermostat, 40°C/50°C (extraction)

BT70 Fire thermostat 70°C (supply)

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3001640-VEX140H-HCE-2011-01-01 Product information

1.Product information

Comfort ventilation EXHAUSTO air handling units are used for ventilation tasks in the area of Comfort ventilation. The operating temperature range for the unit is -30°C… 35°C, outdoor air temperature.

Not suitable for … The air handling unit is not to be used to transport solid particles, nor in areas where there is a risk of explosive gases.

Positioning As standard, the unit is designed for indoor placement.

1.2.1 Spatial requirements

The section below states how much space is needed for the side-mounted doors to be opened to enable service procedures on the unit – including filter replacement and cleaning the cross-flow heat exchangers.

NB! For service reasons there must be a free height of minimum 200 mm above theconnection box of the unit.

1.2.2 Requirements for underlying surface

When fitting the unit directly to an existing surface – i.e. without using the mounting base (accessory) – the surface must be:

• smooth• horizontal (+/- 3 mm per metre)• hard• resistant to vibration

Outlet Condensation outlet, see the chapter entitled “Mechanical assembly”.

1.1 Usage

1.2 Requirements for surroundings

VEX 140HL

1385

700

652

RD10

182-01

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1.2.3 Requirements for the duct work system

Silencers The duct work system must be fitted with silencers specified by the person responsible for the project, in accordance with the requirements for the area of use.

Bends Duct bends can be fitted immediately after the unit, as the air from the spigot flows at a uniformly low speed, resulting in negligible system pressure loss.

Insulation The duct work system is to be insulated out of consideration for• condensation• noise• loss of heat/cooling

Condensation If the exhaust air has very high levels of humidity, condensation can form in the exhaust air duct. EXHAUSTO recommends that a condensation outlet is installed at the exhaust air duct’s lowest point.

No ductconnection

If one or more of the spigots is not connected to a duct:Fit the protective net to the spigots with a maximum mesh width of20 mm.

1.3.1 The function of the air handling unit

The air handling unit is variably adjustable and consumes little energy.

Indoor climate level

The control unit allows three indoor climate levels

*) The DISPLAY panel is used to set the air replacement and temperature deviation values, see the chapter entitled “The DISPLAY panel” and the supplement entitled “List of alarms and menus for VEX140-150-160-170”.

The applicable indoor climate level can be controlled in four ways: • via a weekly schedule, which, on the basis of the requirements entered for the

operation of the unit, is entered into the automatic weekly clock via the DISPLAY panel.

• via a TOUCH panel in the room. The TOUCH panel is used to signal to the control system that there are people in the room, or that people have left the room.

• via a BMS and LONWORKS®. Instructions for LONWORKS® are available on request from EXHAUSTO.

• via ITool – a modem or TCP/IP-based network that can monitor and control one or more units through a PC (or a mobile phone).

See the chapter entitled “Commissioning and operation”.

1.3 Description

Indoor climate level

Energy-saving

People in the room

Air-replacement *)

Deviation from the required room temperature *)

Ventilation blocked

- No No ventilation No control of room temperature

Economy Large No Low, step 1 Larger temperature deviation permitted *)

Standby Small No Low, step 1 Minor temperature deviation permitted *)

Comfort None Yes High, steps 1–10

Precise temperature

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1.3.2 The design of the air handling unit

Layout drawing The drawings below show the layout of the unit (shown without service doors)

1,1,A

2,1,A1,2,A

2,2,A

1

2

345

678910

11

12

13

14

15

17 18 19 2016 21

RD10

181-01

VEX140HLVEX150HLVEX160HL

17181920 1621

1,1,A

2,1,A

1

2

3

45

6 7 8 9 10

1,2,A

2,2,A

11

12

13

14

15

VEX140HRVEX150HRVEX160HR

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The cabinet The in-door and exterior of the cabinet are made of sheet aluminium-zinc. The spaces between the panels are insulated with 50 mm mineral wool.

Fans The unit contains two centrifugal fans for extraction and supply air.

Cross-flow heatexchanger with bypass

The cross-flow heat exchanger in the unit is fitted with a modulating bypass damper. The cross-flow heat exchanger can be removed and cleaned.

Filters The unit includes compact filter for both extraction and supply air.

Pos. no. Part Function

1 Spigot 2,1,A Spigot for outdoor air. This spigot can also be positioned on the top of the unit (2,1,B).

2 Closing damper, LS Closing damper, outdoor air, LSF (accessory).

3 Filter for outdoor air Filters the outdoor air.

4 Bypass damper with motor For operation with heat recovery, the bypass damper is closed so that the air passes through the cross-flow heat exchanger. For bypass operation, the damper is open, and the airflow bypasses the exchanger.

5 Spigot 1,1,A Spigot for extraction air. This spigot can also be positioned on the bottom of the unit (1,1,B).

6 Condensation outlet Channels condensation to the drain.

7 Cross-flow heat exchanger Channels the heat from the extraction air to the supply air.

8 Filter for extraction air Filters the extraction air.

9 Condensation tray Collects the condensate and leads it from the cross-flow heat exchanger to the condensation outlet.

10 Electric heating coil Heats the supply air if the recovered heat is not sufficient.

11 Spigot 2,2,A Spigot for supply air. This spigot can also be positioned on the bottom of the unit (2,2,B).

12 Fan unit For outdoor air/supply air.

13 Fan unit For extraction air/exhaust air.

14 Closing damper, LS Closing damper, exhaust, LSA (accessory).

15 Spigot 1,2,A Spigot for exhaust air. This spigot can also be positioned on the top of the unit (1,2,B).

16 DISPLAY panel Operation of the control system.

17 Connection box Box for the connection of external ventilation components and control panels.

18 Filter control – extraction, PDS1 Controls pressure loss across the filter for extraction air.

19 Filter control – outdoor air, PDS2 Controls pressure loss across the filter for outdoor air.

20 Spigot for airflow control, AFC Spigot for airflow measurement and regulation.

21 Pull-out panel. Positioning of automatic components.

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VEX140HL The principal dimensions are stated on the following drawing:

NB The drawing shows all possible spigot locations.

1.4 Principal dimensions

1,2,A

2,2,A1,1,A

2,1,A

M N

NM

1,2,B 2,1,B

2,2,B 1,1,B

1,1,A

1,2,A

2,2,A

2,1,A

287,5

513 353

62 1365 62

222,565

ø16/ø18

287,5 247,5

12299,5

774,5

1062

62

62

475

275

375

475

633,8

375

375

275

700375

750

12259,5

834

61,2

O 315

O 315

O 315

O 315

RD10

303-01

VEX 140HL

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VEX140HR The principal dimensions are indicated on the following drawing:

NB The drawing shows all possible spigot locations.

1,2,B2,1,B

2,2,B1,1,B

1,1,A

1,2,A

2,2,A

2,1,A

287,5

513353

62 1365 62

222,5 6

ø16/ø18

287,5247,5

1,2,A

2,2,A

2 9

7

66

2

475

275

1,1,A

2,1,A

375

475

633,8

375

375

275

700375

750

1

9

8

6

NM

M N

5

1

5,92

5,47

201

2

6

2

5,5

43

2,1

2

RD10

304-01

O 315

O 315

O 315

O 315

VEX 140HR

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3001640-VEX140H-HCE-2011-01-01 Handling

2.Handling

Delivery The delivered items are:• Air handling unit• Specified accessories (indicated in the checklist on the front page of the

instructions)

Packaging The unit is delivered attached to a disposable pallet and packed in clear plastic.

NB Once the plastic has been removed, the unit must be protected against dirt and dust.

• The covers on the spigots must not be removed until the spigots are connected to the ventilation duct works.

• Whenever possible, keep the unit closed during assembly.• After it has been in operation for a short period, the VEX unit must be

vacuum cleaned internally to remove swarf, if any, from the duct connections.

.

Transport equipment

Transport the air handling unit in one of the following ways. .

Weight For information about the weight of the unit, see the chapter entitled “Technical specifications”.

2.1 Unpacking

2.2 Transport

By lifting truck or fork-lift … By crane …

Lift the air handling unit on the disposable pallet.

NB: If the disposable pallet cannot be used, the forks on the lifting equipment must be sufficiently long to prevent damage to the bottom of the unit.

Never use a crane to lift the air handling unit by the lifting handles.

Use straps and lifting yokes to prevent damage to the air handling unit.

RD10

248-01

RD10

565-01

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2.2.1 Passage through openings

Height The height of the unit is 1127 mm +62mm for a bottom-mounted spigot, if fitted.

Width The list below shows the widths required to allow the VEX to pass.

*) The measurements are stated on the basis of the exact dimensions of the unit.

Removing the service doors

Remove the service doors as follows:• Open both doors• Dismount door stops (B).• Use a small punch or a similar tool to knock the pins out of the tops of the door

hinges (A). The doors can then be lifted off.

If the width of the aperture is … *) then …

less than 710 mm the unit cannot pass through.

between 710 and 760 mm remove the doors, see the section below.

more than 760 mm the unit can pass through.

Detail A Detail B

A B

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Removing the impeller

Cross-flow heatexchanger

See chapter 6 of the section entitled “Cleaning the cross-flow heat exchanger” for details of how to remove and refit the cross-flow heat exchanger.

Step Action

1 Remove the fixing screw that is seated in the pullout rail and loosen the bindings to the motor cable.

2 Pull the fan unit out to the stop (two screws) on the pull-out rail.

3 Remove the supply cable in the motor terminal box and the hose to the inlet.

4 Remove the two screws from the pull-out rail. The fan unit can now be lif-ted off.

RD11

567-01

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3001640-VEX140H-HCE-2011-01-01 Mechanical assembly

3.Mechanical assembly

Background It is important that the air handling unit is installed on a horizontal surface, as this influences the collection and draining of the condensate.

3.1.1 Installation directly on the floor.

The requirements for the floor surface must be fulfilled, see the section entitled “Requirements for underlying surface”, chapter 1.

NB After installation, make sure that the air handling unit is completely level.

3.1.2 Installation on mounting base

The EXHAUSTO mounting base enables correct installation of the air handling unit. The mounting base is fitted with adjustable levelling screws so that the air handling unit can be installed completely level on uneven surfaces (+/- 20 mm per metre). See the separate instructions for the installation of the mounting base.

Connection Connect the condensation outlet to a floor-mounted drain or similar. A water trap must be fitted between the condensation outlet and the drain.

Frost risk If there is a risk of frost:Insulate the condensation outlet and protect it against frost – if necessary, using a heating cable.

Positioning The drawing below illustrates the correct positioning of the water trap from the condensation outlet.

NB If the unit is installed on an EXHAUSTO mounting base, there will be sufficient free height to fit a water trap.

3.1 Installation

3.2 Condensation outlet

VEX 140 - VEX150 - VEX160

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VEX100VDI meets VDI 6022/ILH Berlin requirements, which means:

• bacterial growth and dirt accumulation are minimal

• conditions for cleaning are optimal

3.3 Hygieine (applies only to VEX100VDI)

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3.3.1 Measurement of pressure loss across filters (applies only to VEX100VDI)

VDI6022 approval also means that pressure loss across the filters must be measurable during operation. This means a U-pipe manometer must be fitted for every exterior filter fitted on the VEX.

The section “Maintenance” states how often the filters should be inspected and replaced.

Fitting of U-pipe manometer

Step Action

1 Fit the U-pipe manometer and air bleeders with the supplied screws in the punched holes.

2 Fit the hoses from each air bleeder down to the manometer. See picture.

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3001640-VEX140H-HCE-2011-01-01 Electrical installation

4.Electrical installation

The work must be performed by an authorised electrical fitter, in accordance with locally applicable regulations and legislation.

Repairswitch

EXHAUSTO A/S stresses that according to the Machine Directive*), a repair switch must be fitted in the fixed installation of the unit.

The switch must …• be lockable or positioned in plain sight in the immediate vicinity of the

unit.• be able to disconnect all poles from the electrical supply.

– contact distance of at least 3 mm in each pole.• set up as a power supply isolator in accordance with standard

EN 60 204-1.

The repair switch is not supplied by EXHAUSTO.

*) Please refer to the Machine Directive – Appendix 1 - “Separation of the sources of energy”.

WarningDo not open the service doors before the electrical supply has been disconnected at the repair switch.

Air handling unit The electrical installation work for the air handling unit consists of the following tasks:

Connection to air handling unit:• Electrical supply• Connection box

Connection box The following can be connected to the terminal board in the connection box:

• DISPLAY panel, via EON**) BUS

• TOUCH panel***), via EON**) BUS

• EON components***), via EON**) BUS

• Cooling unit control***)

• Closing damper, exhaust, LSA/LSAR***)

• Closing damper, outdoor air, LSF/LSFR***)

• Fire thermostat BT 40/50/70***)

• Alarm relay

**) EON = EXHAUSTO Operating Network.***) Accessories, see the checklist on the front page of these instructions.

4.1 The scope of the installation

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• The installation of the supply cable must be carried out in accordance with applicable regulations and legislation.

• The earth terminal (PE) must always be connected.

Diagram The electrical supply and the repair switch must be connected as shown in the diagram in the section : “Connection diagram for electrical supply and connection box”.

4.2.1 Fuses and supply cable

Fuses The fuses must be suitable for:• Short-circuit protection of the unit• Short-circuit protection of supply cable• Overload protection of supply cable

Power supply cable

When dimensioning the supply cable, the conditions at the installation location – including temperature and the path of the cable – must be taken into consideration.

• The unit must be protected against indirect contact.

• If earth leak circuit breakers are fitted in the installation, they must be of a type that breaks the circuit when they register vagrant power supply with DC content (pulsating DC, RCCB breaker type A, in relation to standard EN61008). The earth leak relays must be marked with the following symbol:

• Leak current of up to 300 mA can be generated.

Dimensioning EXHAUSTO recommends the following dimensions for fuses and supply cables:FC-motor

4.2 Connection of the electrical supply

Electric heating coil size

Recommended fuse

Recommended min. cable dimension

Power consumption max.

HCE 7,2 25 A gL 5G4,0mm2 21,6 A

HCE 14,4 35 A gL 5G6,0mm2 32,0 A

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4.3.1 Components in connection box

Overview

4.3 Connection box

Filter control for extraction (PDS1)

Filter control for outdoor air (PDS2)

SupplyExtraction

Measurement socket for airflowmeasurement and

LON-terminalsEON-terminals

Other terminalsAlarm

regulation:

Cable incl. plugfor extra DISPLAY panelduring serviceprocedures

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4.3.2 Connection diagram for supply voltage and connection box

Diagram The diagram below illustrates the connection of the supply voltage, the DISPLAY panel and various accessories that must be connected to the connection box.

* Not supplied by EXHAUSTO.** Only for external fitting.

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Explanation of diagram

NB Other parts are delivered by EXHAUSTO as indicated on the front page of these instructions.

4.3.3 Cable plan

The cable plan below shows the accessories that can be connected in the connection box.

Type Explanation Supplied by …

-F1 Pre-fuse in section and distribution board customer

-Q1 Main isolator in section and distribution board customer

-Q2 Repair switch that disconnects all poles customer

-E1 Fuse board customer

-F2 Fuses for VEX automatic components and motors customer

-F3 Fuses for electric heating coil, steps 1 and 2 customer

-A1 Air handling unit EXHAUSTO

-A2 Connection box EXHAUSTO

-W1 Power supply cable. See cable dimensions in section 4.2

customer

-W2 Power supply cable. See cable dimensions in section 4.2

customer

-X1 Socket for DISPLAY panel in connection box.Not to be removed. Used in service procedures.

EXHAUSTO

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4.3.4 Terminal board for the connection box

The following chart shows the components (standard + accessories) that can be connected to the terminal board.

BT*) Jumpers on connection board

ComponentTerminal board no.

Connection of the following components …

LON 1 - 4 • LONWORKS® bus system (Supplementary instructions available. Set-up requires the assistance of a network provider).

Internal EON 5 - 8 Internal EON components.

External EON 9 - 12 External EON components, for example:• TOUCH panel (EON-TOUCH 6/8)• DISPLAY panel (EON-DISPLAY-8)• EON-PRESSURE• EON-CO2• EON-TS DUCT• EON-TS ROOM

LSF/LSFR 13 - 15 • Closing damper, outdoor air, LSF• Closing damper, outdoor air with spring return, LSFR

LSA/LSAR 13 - 15 • Closing damper, exhaust, LSA• Closing damper, exhaust air with spring return, LSAR

BT*) 16 - 17 These inputs may be used to connect:• Smoke detectors• Fire thermostats (e.g. BT40, BT50 or BT70)• BMS• Fire control systems

RGS 18 - 20 18 - 19:• Interrupt (when the VEX starts)• Close (when the VEX stops)

18 - 20:• Close (when the VEX starts)• Interrupt (when the VEX stops)

24V 21 - 22 • 24V output for external components

Alarm 23 - 25 • General alarm

Where Action

fire thermostats (BT) are not being used place jumpers between terminals 16 and 17

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4.3.5 Connection of shielded cable to EON-BUS

Cable type A shielded cable of type 2 x 2 x 0,5� is to be used for the EON bus.Connection The conductors and shield must be connected correctly as illustrated in the chart below.

Step Action

1 The 0V and 24V conductors must be twisted together. SCL and SDA must be twisted together.Drawing symbol: twisted-pair conductors

2 The conductors in the EON bus must be stripped to the correct length and must not be damaged, as this may cause them to break.

3 All screws in the EON connector must be tightened.

4 The shield in the EON bus must be terminated correctly in the connection box. The shield wire must be connected to the 0V conductor.

5 The shield in the EON bus is continued in the individual modules. Use the cable tie to squeeze the foil from each cable together.

B

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The external EON terminals are used to connect the following components:• TOUCH panel (EON-TOUCH 6/8)• DISPLAY panel (EON-DISPLAY-8)• EON-PRESSURE• EON-CO2• EON-RH

4.4.1 Connection of DISPLAY panel

The fitting plate must be installed on a flat, even surface.To remove the DISPLAY panel from the fitting plate, carefully insert a screwdriver into the slots on each side of the panel and prise it loose. The panel can then be removed.

NB The DISPLAY panel is connected to the unit on delivery from the factory. For external connection, see the section entitled “Connection diagram for electrical supply and external connection box”.

4.4.2 Connection of TOUCH panelTo separate the TOUCH panel, first remove the frame. There are two screws at the back of the frame which hold the insert in place. Once you have loosened the screws, carefully remove the insert.

Diagram Connect the TOUCH panel as shown in the diagram below:

4.4 Connection to terminals, EON external

A: From previous EON moduleor external connection box

B: To next EON module

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4.4.3 Setting the address and function of the TOUCH panel

Settingoptions

• Set the address and function to the values stated in the installation specifications or in the chart on the following page.

• Each panel must be allocated a unique address number (from 0 to 7).

NB After the required settings have been entered, disconnect the power supply at the main switch and then restart the unit.

FUNCTION set to …

Function

1 Timer function. Overrides to Comfort level in pre-set time.

2 Timer function, master. Overrides to Comfort level in pre-set interval. Resets all other panels to zero.

3 Manual function, master.

Manual change of level of operation, either for starting or stopping the unit (outside the clock program) or for temporarily changing the level of operation until the clock takes over (switches) again. Resets all other panels to zero.

4 Holiday function. Stops the unit until the next time that the panel is activated.

5 Manual function. Manual change of level of operation, either for starting or stopping the unit (outside the clock program) or for temporarily changing the level of operation until the clock takes over (switches) again.

6 — No function.

7 — No function.

0 — No function.

SetSet

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Complete form The form below must be completed when setting the address and function of the TOUCH panels.:

4.4.4 “On-demand” control via constant pressure regulation

Setting and connection of the address of the analogue EON-PRESSURE module:Setting address 0 or 1

NB After the required settings have been entered, disconnect the power supply at the main switch and then restart the unit. In addition, fill out the label on top of the module.

ConnectionEON-PRESSURE

Control panel no.Position in the room …

Address set to … Function

EON-PRESSURE:Address 0Pressure measurement, extraction duct0...10V = 0...500 Pa

Address 1Pressure measurement, supply air duct0...10V = 0...500 Pa

A: From previous EON moduleB: To next EON module

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4.4.5 “On-demand” control via CO2 measurement

Setting and connection of the address of the analogue EON-CO2 module:Setting address 2


ConnectionEON-CO2

EON-CO2:Address 2CO2 measurement0...10V = 0...2000 ppm


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4.4.6 “On-demand” control via humidity measurement

Setting and connection of the address of the analogue EON-RH module:Setting address 3


ConnectionEON-RH

NBAddresses 4 to 7

Addresses 4 to 7 are not in use.

EON-RHAddress 3Humidity measurement 0...10V = 0...100% RH


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3001640-VEX140H-HCE-2011-01-01 Commissioning and operation

5.Commissioning and operation

To prevent overheating, the supply airflow must not be less than 220 m3/h (60 l/s) for operation involving the electric heating coil.

During the commissioning phase, it may be necessary to work with the control system boxes open. Some components in these boxes must only be touched with tools that are electrically insulated.

Before any and all work on motor controls or the motor’s cables and terminal boxes, the power supply must be disconnected for at least 5 minutes to allow the capacitors to discharge.

Do not touch the heating coil, as this can cause burns.

NB The fans run on for three minutes. This ensures that the heat from the electric heating coil is fully exploited.

Before starting the initial adjustment

• Keep the supplement entitled “List of alarms and menus for VEX 100” nearby, as you will need it during the initial adjustment procedure.

• Check that the electrical supply is connected.• Set the DISPLAY panel to technician mode, see the sections entitled “5.6.2

Operation of the DISPLAY panel” and “5.6.4 Switch between user modes”.• Use menu 921 to check that the expected control panels and EON modules

have been fitted. During the initial adjustment of the airflow, we recommend disconnection of the following modules: EON-CO2, EON-RH and EON-PIR.

• Check that the fire thermostats (if fitted) have been fitted correctly according to the simplified diagram in the introduction. Activate the thermostat mechanically, and check that the unit stops. Reset the thermostat manually, then reset “alarm 82” in the DISPLAY panel. Repeat this test for all the thermostats fitted.

• Check that the closing dampers (if supplied) have been fitted correctly according to the simplified diagram in the introduction. Start the unit by selecting step 1 in menu 1, and check that the damper opens.

5.2.1 Measuring points for determining the airflow

The measuring points in the unit are used to determine the airflow through the unit. The method is described in detail in the section entitled “Measuring points for VENT arrangement”.

5.1 Commissioning

5.2 Initial adjustment of airflow

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5.2.2 Balance (menu 514)

Balance is the desired relationship between the fan speed and the supply air and extraction airflows.

The balance can only be maintained within certain areas of operation, limited by factors including:

• Duct characteristics• Minimum fan revolution• Minimum airflow required• Maximum airflow required

Examples of balance

The examples show a unit with manual fan control and a balance of 0.80 and 1.20, respectively.

Area The required airflow is …

A outside the operational scope of the unit

B balanced

C not balanced

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5.2.3 Selection of airflow regulation method

Airflow regulation methods

MethodMethod no.

DescriptionSetting

Extraction Supply air

Manual control 1 Manual control of fan speed % Balance

Airflowcontrol

2 Maintains the airflow, compensating for changes in the duct work system,filter clogging, etc.

Requirements:Airflow measurement sensors, AFC1/AFC2, available as accessories.

m3/hl/s

Balance

Constant pressure regulation of extraction

3 Constant pressure-regulated extraction with set supply air.

Requirements:Sensor for measuring underpressure in the extraction duct, EON-PRESSURE, available as an accessory.

Pa %

5 Constant pressure-regulated extraction slave-controlled supply air.

Requirements:Sensor for measuring underpressure in the extraction duct, EON-PRESSURE, available as an accessory.

Pa Balance

Constant pressure regulation of supply air

4 Constant pressure-regulated supply air with set extraction.

Requirements:Sensor for measuring overpressure in the supply air duct, EON-PRESSURE, available as an accessory.

% Pa

6 Constant pressure-regulated supply air with slave-controlled extraction.

Requirements:Sensor for measuring overpressure in the supply air duct, EON-PRESSURE, available as an accessory.

Balance Pa

Constant pressure regulation of both extraction and supply air

7 Constant pressure regulation of both extraction and supply air.

Requirements: Sensor for measuring underpressure in the extraction duct, EON-PRESSURE, available as an accessory.

Sensor for measuring overpressure in the supply air duct, EON-PRESSURE, available as an accessory.

Pa Balance

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Specialist mode Set the DISPLAY panel to specialist mode, (see the section entitled “Switch between user modes”).

Go to menu 571 … Select airflow regulation method (1…7).

Method 1 or 2 Method 1 – Manual control. Method 2 – Airflow control.

Method 3, 5or 7

Method 3 – Constant pressure-regulated extraction with set supply air.Method 5 – Constant pressure-regulated extraction with slave-controlled supply air.Method 7 – Constant pressure-regulated extraction and supply air.

Setting …Go tomenu …

Action

min. extraction airflow

1 • Select step 1.

511 • Adjust the value to reach the minimum projected extraction airflow.

max. extraction airflow


512 • Adjust the value to reach the maximum projected extraction airflow.

balance 514 • Set the balance to reach the projected supply airflow.

Setting …Go to menu …

Action

extraction pressure at Economy/Standby


511 • Adjust the value to reach the projected extraction pressure.

extraction pressure at Comfort


512 • Adjust the value to reach the projected extraction pressure.

Method 3:constant supply airflow

5311 • Set the required constant supply airflow.

Method 5:balance at Comfort

514 • Set the balance to the maximum projected supply airflow.


514 • Set the balance to the maximum projected supply air pressure. The supply air pressure can be calculated as follows:

Supply air pressure = Extraction pressure x Balance

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Method 4 or 6 Method 4 – Constant pressure regulation of supply air with set extraction.Method 6 – Constant pressure regulation of supply air with slave-controlled extraction.

5.2.4 Comfort setting in (menu 1)

• Go to menu 513

NB Irrespective of the setting in menu 513, the user can always select OFF in menu 1.

Re-set the DISPLAY panel to technician mode, (see the section entitled “Switch between user modes”).

5.2.5 Re-connection of EON modules

If modules EON-CO2, EON-RH and EON-PIR have been removed, they must be re-connected.

5.2.6 Compensation of airflow

Compensation Compensation of the airflow is carried out by a closed sensor sending signals to the automatic control system, which, on the basis of these signals, can then reduce or increase the required airflow. Airflow compensation can always be carried out, irrespective of whether the unit is in Economy, Standby or Comfort mode.

Airflow compensation can be carried out on the basis of the following measurements:• Outdoor temperature, (airflow reduced as the temperature falls).• Air quality in the room (CO2 content of the air).• Humidity of the air in the room (RH of the air).

All compensation options can be connected and active at the same time, and so can be used simultaneously to control the airflow.

Setting …Go tomenu …

Action

supply air pressure at Economy/Standby


511 • Adjust the value to reach the projected supply air pressure.

supply air pressure at Comfort


512 • Adjust the value to reach the projected supply air pressure.

Method 4:constant extraction airflow

5211 • Set the required constant extraction airflow.


514 • Set the balance to the projected extraction airflow.

Select inmenu 513

when …

User The user can set the Comfort level from step 1…10. Typically used for methods 1 and 2.

One of steps 1…10 The Comfort level setting must be fixed. The Comfort level is typically set to step 10. Should be used for methods 3–7.

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Reading ofcurrent controlsignals

The current control signals for extraction and supply air are shown in the chart below. In the row for the airflow regulation method selected, (if necessary, see the section entitled “Selection of airflow regulation method”), you can see which menu contains the set points for extraction and supply air.

5.2.7 External compensation of airflow (menu 54)

Function When the control system is in operation, this function can be used to reduce the required airflow if the outdoor temperature is falling.

Selection of outdoor air compensation

Example: Compensation of airflow for outdoor air temperature

Airflow regulation method (menu 571)

Control signal – extraction, menu no.

Control signal – supply air, menu no.

1 521 531

2 5221 5321

3 5231 5311

4 5211 5331

5 5231 531

6 521 5331

7 5231 5331

StepGo to menu

…Action

1 541 Activation – Select Yes.

2 542 If appropriate, select new T_LO temperature (The lower set point for outdoor air temperature compensation).

3 543 If appropriate, select new T_HI temperature (the upper set point for outdoor air temperature compensation).

1. Comfort airflow at step 7.

The outdoor temperature is … Airflow is …

A lower than T_LO equivalent to airflow at step 1.

B between T_LO and T_HI gradually reduced between Comfort airflow and step 1.

C higher than T_HI equivalent to Comfort airflow.

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5.2.8 CO2 compensation, (menu 55)

Requirements A CO2 sensor (EON-CO2) must be fitted before you can select CO2 compensation of the airflow.

Function When the automatic control system is operative, this function can be used to increase the required airflow when the CO2 concentration in the room increases.

NB The CO2 level is not used to start or switch operating level.

Selection of CO2 compensation

Example: CO2 compensation

StepGo to

menu …Action

1 — Connect the EON-CO2 module as described in the supplementary instructions.

2 — Switch on the power supply to the unit.

3 55 To see the current CO2 level in the room.

4 551 If appropriate, select new CO2_LO value (the lower set point for CO2 compensation).

5 552 If appropriate, select new CO2_HI value (the upper set point for CO2 compensation).

1. Comfort operation.2. Economy or Standby operation.

The concentration of CO2 in the air is …

Airflow …

A less than CO2_LO equivalent to the step shown in menu 1.

B between CO2_LO and CO2_HI gradually increased from the step shown in menu 1 to the airflow at step 10.

C higher than CO2_HI increased to the airflow at step 10.

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5.2.9 Humidity compensation of airflow (menu 56)

Requirements An RH sensor (EON-RH) must be fitted in order to be able to select humidity compensation of the airflow. The sensor is placed in the room where you wish to make the compensation – for example, in a bathroom or similar.

Function When the automatic control system is in operation, this function can be used to increase the required airflow when the humidity level in the room rises.

NB Humidity compensation of the airflow is not used to start or switch operating level

Selection of humidity compensation

Example:Humidity compensation

StepGo to

menu …Action

1 — Connect the EON-RH module as described in the supplementary instructions.

2 — Switch on the power supply to the unit.

3 56 To see the current humidity measurement in the room.

4 561 If appropriate, select new RH_LO temperature (the lower set point for humidity compensation).

5 562 If appropriate, select new RH_HI temperature (the upper set point for humidity compensation).

1. Comfort operation.2. Economy or Standby operation.

The humidity level in the air is …

Airflow …

A less than RH_LO equivalent to the step shown in menu 1.

B between RH_LO and RH_HI gradually increased from the step shown in menu 1 to the airflow at step 10.

C higher than RH_HI increased to the airflow at step 10.

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5.3.1 Temperature adjustment

Temperature adjustment is carried out as serial regulation of the following elements:

• Modulating heating coil• Modulating bypass of cross-flow heat exchanger• If required, control of external cooling unit (EON-XCU)

Select You can choose between:

• Supply air regulation (menu 681 = no):Typically used when the unit serves several rooms with different loads (sun, people, machines). The temperature is regulated in relation to the built-in temperature sensor in the supply air spigot.

• Room temperature regulation (menu 681 = yes)Typically used when the unit serves several rooms with identical loads. The temperature is regulated in relation to the built-in temperature sensor in the extraction spigot or via an external duct or room sensor (accessory).

Compensation Each form of regulation provides different options for set point compensation.

5.3 Initial adjustment of temperature

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Basic settings Before choosing a regulation method, a number of basic temperature settings should be considered. To carry out all the settings, follow the instructions in the sections below.

5.3.2 Limits for supply air temperature

NB The settings below only need to be altered if you have special requirements. Otherwise, the factory settings can be used.

Min. temperature

Max. temperature

Max. ΔT-temperature

ΔT-Comfort

ΔT-Standby

T_COOL_ECO

T_HEAT_ECO

Temperature-

adjustment-

method

Limits for supply temperature,

section 5.3.2

Limits for indoor climate level,

section 5.3.3

Supply temperature regulation,

section 5.3.4

Room temperature regulation,

section 5.3.5

External compensation

of

the supply temperature

Summer compensation

of

the room temperature

Setting …Go to

menu …NB

lowest permissible supply air temperature …

643 possible setting: 10°C...20°C

highest permissible supply air temperature

644 possible setting: 30°C...40°C

lowest permissible supply air temperature below room temperature

645 this makes it possible to prevent condensation on the supply air battery, andsudden temperature drops.Possible setting: t: 2°C...15°C

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5.3.3 Limits for indoor climate level

NB The settings below only need to be altered if you have special requirements. Otherwise, the factory settings can be used.

NB The setting ranges for the points listed above depend on the choices made in menu 2, and the settings limit each other.

Example: Set point temperature 22°C:

Setting …Go to

menu …NB

permissible temperature deviation at Comfort level.

661 • This point cannot be higher than menu 662.

• This temperature difference acts as a neutral zone between the post-heating coil and the cooling unit – if fitted – during Comfort operation.

permissible temperature deviation at Standby level.

662 • This point cannot be lower than menu 661.

• This temperature difference acts as a neutral zone between the post-heating coil and the cooling unit – if fitted – during Standby operation.

set point for temperature regulator for the cooling unit – if fitted – at Economy level.

663 This temperature applies for Economy level irrespective of the selection made by the user in menu 2.

set point for temperature regulator for post-heating coil at Economy level.

664 This temperature applies for Economy level irrespective of the selection made by the user in menu 2.

T_Comfortmax. 40oC

T_Comfort22oC

T_Comfortmin. 10oC

Bypass T_Comfort (+/- 1K)

T_Standby(+/- 3K)

(22-1 = 21oC)

(22-3 = 19oC)

T_Heat Economy(e.g. 16oC)

Coolingrequirement

Heatrequirement

Comfort Standby Economy

T_Cool Economy(e.g. 30oC)

(22+3 = 25oC)

(22+1 = 23oC)

RD

1273

1GB-

01

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5.3.4 Supply air temperature regulation

Technician mode Set the DISPLAY panel to technician mode, (see the section entitled “Switch between user modes”).

Go to menu 681 … If you require supply air temperature regulation, select “no”.

Outdoor air compensation

If you require outdoor air compensation, select a value in accordance with the information below.

Outdoor air compensation aims to compensate for the energy that a building radiates when the outdoor air temperature is low, or absorbs when the outdoor air temperature is high, thus maintaining a constant temperature in the building.

Example: Supply airtemperature 20°C

If the supply air temperature is too … then menu …

cold when the temperature outdoor is low, 6421 and/or

6422 must be raised.

hot when the temperature outdoor is low, 6421 and/or

6422 lowered.

cold when the temperature outdoor is high, 6423 and/or


hot when the temperature outdoor is high, 6423 and/or

6424 lowered.

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5.3.5 Room temperature regulation

Technician mode Set the DISPLAY panel to technician mode, (see the section entitled “Switch between user modes”).

Go to menu 681 … If you require room temperature regulation, select “yes”.

Summer compensation

If you require summer compensation, select a value in accordance with the information below.

The function of summer compensation is to raise the room temperature when the temperature outdoor is high, to reduce the temperature difference people experience when entering or leaving the building. This results in a better indoor climate.

Example: Room temperature20°C

If the room temperature is too … then menu …

cold when the temperature outdoor is high, 6521 must be lowered and/or


hot when the temperature outdoor is high, 6521 must be raised and/or

6522 lowered.

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5.4.1 HCE safety functions

Slope limitation of output supplied

• Output supply limited to max. 25% per minute.• Output removed without slope.• The slope may result in the heating output figure shown (menu 61) exceeding

the actual output value.

Maintaining the correct temperature in the heating coil

Two thermal triggers ensure that the heating coil doesn’t overheat.• The TSA70 disconnects at 70°C and resets automatically.• The TSA90 disconnects at 90°C and is reset manually.

Communication monitoring

• If communication between the HCE master and the control system breaks down, the output requirement is reset to zero and an alarm is triggered.

Airflowmonitoring(accessory)

If an airflow monitoring unit (AFC2) is fitted, this can be chosen to ensure that the minimum airflow is maintained:

NB If heating is required and the airflow is not higher than 220 m3/h (60 l/s), an alarm will be triggered.

5.4.2 Registration of icing in the cross-flow heat exchanger

Temperatureregistration

When temperature registration is selected, the exhaust temperature in the unit is measured. Icing is registered when the temperature falls below the value selected for longer than the selected time delay.

Selection of temperature

Selection of time delay

NB The de-icing procedure is always terminated when the exhaust temperature (TE12) is 2°C higher than the TE12 temperature setting.

5.4 Safety functions

Step Action

1 Set the DISPLAY panel to specialist mode.

2 Go to menu 573.

3 Select yes.

Step Action

1 Select menu 723.

2 Select the temperature required.

Step Action

1 Select menu 724.

2 Select the time delay required.

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5.4.3 De-icing function

How doesice form?

Icing on the extraction side of the cross-flow heat exchanger results from a combination of:

• High humidity in the extraction air.• Low outdoor air temperature• Large difference in temperature between outdoor air and extraction air.

Settingthe alarm time

If de-icing cannot be carried out satisfactorily, the unit stops and an alarm is triggered. An alarm is triggered if the de-icing process is not completed before the alarm time selected has expired.

Selection of method

Air reduction For de-icing by air reduction, the supply air airflow is reduced to level 1. If de-icing has not been completed after half the alarm time has elapsed, the supply air fan will stop.

Bypass de-icing Bypass de-icing is carried out as follows:

Step Action

1 Select menu 727.

2 Select the alarm time required

If the required method is … then in menu …

Air reduction (reduction of supply air airflow) select .

Bypass de-icing select .

Phase Description

1 The control system registers icing on the cross-flow heat exchanger.

2 The bypass damper opens slowly (10% per minute). The normal temperature regulation system will deal with supplying power to the electric heating coil.

2a If the energy supply is not sufficient, the following safety system will come into effect.

• The bypass damper remains in its position when the temperature in the return pipe falls below 7°C above the “stop limit” (menu 713). At factory settings: 13°C + 7°C = 20°C.

• The bypass damper closes slowly when the temperature in the return pipe falls below 5°C above the “stop limit” (menu 713). At factory settings: 13°C + 5°C = 18°C.

3 When ice is no longer registered on the cross-flow heat exchanger, the bypass damper will close again slowly (10% per minute).

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5.4.4 Operating mode in the event of fire

3 operating modes

You can choose between three different operating modes in the event of fire. The operating mode selected should abide by the legislative requirements from the local authorities:

Operating mode activation

The selected operating mode under the Fire Alarm function is activated if the closedcurrent circuit on one of the two inputs (BT40/50 and BT70) on the connection board isbroken.These inputs may be used to connect:

• Smoke detectors• Fire thermostats (e.g. BT40, BT50 or BT70)• BMS• Fire control systems

If an input is not used it should be bridged.

5.4.5 BT, Fire thermostats

Background A fire thermostat is a temperature-controlled electrical circuit breaker fitted in the aspiration and/or extraction ducts. If the air temperature exceeds the level set in the thermostat, the contact set breaks the circuit and the continued operation of the ventilation unit is then determined by the mode of operation (method 0, 1 or 2) selected in menu 731. Reconnection, which must be carried out manually via the thermostat, cannot be completed until the air temperature has dropped by at least 15ºC.

Thermostat properties

The fire thermostats must feature the following properties:• Potential free switch.• Closed circuit principle:

• closed power circuit = no alarm• broken power circuit = alarm.

• Manual reset of the thermostat itself.• Good quality thermostats and sensors that are suited to the purpose.

Extraction duct – BT40/50

The contact set breaks at air temperatures in excess of 40°C/50°C. For positioning in the extraction duct.

Aspiration duct – BT70

The contact set breaks at air temperatures in excess of 70°C. For positioning in the aspiration duct.

Go to menu 731 and select method …

Operating mode

0 (factory setting) Supply air and extract air stopped.

1 Supply air stopped and extract air 100%.

2 Supply air and extract air 100%.

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Testing the fire thermostats

If the installation features multiple fire thermostats, these must be tested individually.Test the fire thermostats as described in the chart below:

5.5.1 List of EON modules connected

5.5.2 Language selection

NB Some menus are displayed in English, irrespective of the language chosen.

Step Action

1 Check the DISPLAY panel. The light diode must not be red (it may be yellow).

2 Trigger a single fire thermostat as follows:• Use the fire thermostat test function (if it has one), • or use hot air, • or remove a cable from the fire thermostat.

3 Check the DISPLAY panel. The light diode should now be red.• Select menu 3, check that “A30” is displayed in line 2 along with the time

and date.

4 • Reset the fire thermostat or reconnect the cable.

5 Go to menu 82 in the DISPLAY panel.• Select “yes” to acknowledge the alarm.

6 Check that the light diode on the DISPLAY panel is not lit (or shines yellow).

7 Repeat all the steps from 3 onwards for the remaining fire thermostats.

5.5 Service

Step Action

1 Select menu 921 and check the total number of EON modules connected.

2 Push and turn the switch, review the list of EON modules connected.

Step Action

1 Select menu 932.

2 Push the switch and turn it backwards or forwards until the language required is shown in the display.

3 Press again to select the new language.

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5.6 The DISPLAY panel

5.6.1 DISPLAY panel – QUICK GUIDE for the VEX100 range

Operating switch•Turn the switch to move between menus in the display. •Press the switch to set the value in the menu (menus 1 and 2 only).

Display Daily users have access to menus 1, 2 and 3.

The light

Information list

*) Only shown if the accessory in question is fitted.

Menu Display Function

1 1 Airflow* Step 7

Setting the airflow to Comfort level.

2 2 Temperature* 20 °C

Setting the required temperature.

3 3 10:43 Fri Comfort (AUT)

Time, day and indoor climate level. The alarm and information numbers are displayed in the bottom line when the light is illuminated.

When menu 3 displays …

and the lamp is …

then ... In menu 3, read ...

A.. redan alarm has been triggered in the unit.

the alarm number (e.g. A14) and contact the person responsible for operation. You will find a list of alarms in the supplement entitled “List of alarms and menus for VEX140-150-160”.

i.. yellowoperation is inconsistent.

the information number (e.g. . i20) and identify the cause from the list below. Then contact the person responsible for operation.

.. Reset menu 82

yellowinconsistent is operation.

info number. This is the number of an active piece of information that has been pushed out of the alarm list memory (which can hold up to 10 pieces of information) on account of a periodical information message on the list. Go to menu 82 to reset the list.

Info. no. in menu 3 means … Info. no. in menu 3 means …

i20 De-icing of the cross-flow heat exchanger started.

i61 Extraction: airflow lacking *).

i40 EON bus unit(s) lacking. i62 Extraction: pressure lacking *).i42 DISPLAY panel set to specialist mode

connected.i65 Filter control for outdoor air triggered.

i43 Timer backup battery exhausted i66 Supply : airflow lacking *).i50 Thermal cut-out TSA 70 for the electric

heating coil triggered.i67 Supply : pressure lacking *).

i60 Filter control for extraction triggered. i73 airflow to cooling unit lacking *).

Operating switchLight

Display

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5.6.2 Using the DISPLAY panel

The display The user interface is built up of menus shown on an LCD display (consisting of 216 characters).

Editing Editing is possible when the menu status field displays *:

1. Press the operating switch.

2. The value in the status field flashes – start editing.

3. Set the value by turning the operating switch:• turn the switch clockwise to increase the value,• turn the switch anti-clockwise to decrease the value.

4. Press the operating switch to save the value selected and conclude the editing process.

Figure Display text

A Menu number, the number of digits corresponds to the submenu level.

B Text

C Menu status field

D Value and unit, if any

1 Airflow *Step 5

A

B

C

D

Menu status field displays Press operating switch …

No function

> Go to submenu …

< Return to main menu

* Editing possible

value(flashes) Editing in progress

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5.6.3 Operating modes

The operation of the air handling unit can be carried out in three modes, depending on the person operating the unit and on which settings are to be entered. The chart below illustrates the three modes.:

Example: The chart shows the setting options in each operating mode for the regulation of the extraction airflow:

NB Note how the specialist mode settings limit the technician’s setting scale (25–100%) and how the settings in technician mode define the user’s scale (step 1 = 50%, step 10 = 85 %).

Factorysettings

The actual settings of the unit are listed in the “List of alarms and menus for VEX100”.

Operating mode PersonOperating options in the DISPLAY panel

User mode Users in the room – office staff, for example.

Menus 1–3

Technician modeThe person responsible for the operation of the unit.

The entire menu structure is visible, but the setting options are limited to the menus marked with an asterisk (*) in the DISPLAY panel.

Specialist modeEXHAUSTO’s service fitters / specially trained personnel.

The entire menu structure and all setting options are accessible.

U_fan_start

U_fan_max

U_fan_exhaust

U_fan_supply

FanSpeed_max

FanSpeed_min

FanSpeed_comfort

Technician modeMenu 511 og 512

Setting: 25...100%

Specialist modeMenu 574

Setting: 10...100%

U_fan_exhaust_min

1

2

34

5

67

8

910

10

20

30

40

50

60

70

80

90

100

0

1

2

3

4

5

6

7

8

9

10

0

FanSpeed_exhaust

FanSpeed_supply

% Volt

User modeMenu 1

Setting: step 1...10

1 Airflow *Step 6

512 Step 10 *85 %

511 Step 1 *50 %

574 Motor_1_MIN *25 %

0

100

%

(Menu 911)(Menu 521)

Depends on the motor type.

Can not be changed.

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5.6.4 Switch between user modes (user/technician/specialist)

When the control system is exited, it must be left in user mode.

Switch to technicianmode

Returning touser mode

Switch to Specialist mode In specialist mode you can set parameters that affect the fundamental

set-up of the unit. Do not use this mode unless you have received sufficient instruction or training

The drawing shows the sliding switch behind the DISPLAY panel:

Sliding switch Normal operation. User and technician modes.

Sliding switch Specialist mode:

• Set the sliding switch to position .• Use the push button on the panel to confirm.

• The display shows .

• The diode will now be yellow, indicating that specialist mode has been activated.

REMEMBER … to return the sliding switch to its original position , before leaving the installation.

Action … Menu displays …

Go to menu 3. 3 10:43 Fre Comfort(AUT)

Press and hold in switch for approx. 5 sec. until code appears in the display.

Technician code0000

Enter the four-digit code: 3142. Turn the switch to select each figure and then press to confirm.

Technician code3142

You are now operating in technician mode. 4 Mode >

Action … Menu displays …

Go to menu 4. 4 Mode <

Turn the switch to the left until the menu displays EXIT. EXIT <

Press the switch.

You are now operating in user mode. 3 10:43 Fri Comfort(AUT)

9 Service >

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Pre-programming The weekly clock is pre-programmed at the factory with the following periods and climate levels:

Example: The graph shows the climate level setting for the period in question. Below the graph, you can see the graphic display that also shows the second line of the display (16 characters at a time).

Summertime The clock automatically switches to summer and winter time (the night before the last Sunday in March, and the night before the last Sunday in October).

Menu screen- menu 423

5.7 Setting the weekly clock – menu 423

DayPre-programming

Period Climate level

Monday–Friday 00.00–05.0005.00–06.0006.00–17.0017.00–19.0019.00–00.00

OffStandbyComfortStandby

Off

Saturday, Sunday All day Off

A Day selected.

B Time selected.

C The arrow points to the current climate level in line 2.

D Text

E Menu status field

F Graphic presentation of climate level, 1 block = 10 min.

Mon 00:00 � EDIT *¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤

A

B C

E

F

D

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Before changing the pre-programmed weekly clock

• Determine the ventilation requirements for every day of the week:Divide the days into periods on the basis of ventilation requirements: Comfort – Standby – Economy – Off (see section 1.3 for a description of these levels). An example of a period could be: Monday 08.00–16.00 Comfort operation.

• Make the required changes to all the weekdays one by one in menu 423.

Example –reprogramming

The example below shows how to re-programme the weekly clock, step by step.

NB • When programming, it is only possible to turn the timer forwards. If you turn the timer too far forward for a block, the period will be overwritten, and the overwritten time will have to be reprogrammed again.

New settings following reprogramming.

Step Action Display Timer

1. • Press .• Select EDIT by turning and pressing.

Mon 00:00 � EDIT *¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤

2. • Press to edit the figures.(Setting the start time for the first block).

Mon 00:00 � OFF *¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤

3. When the time is correct:• Press to save.

Mon 05:00 � OFF *¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤

4. • Turn forwards until you reach the climate level required, and then press to save.

Mon 05:00 � ECO *¤¤¤¤¤¤¤¤¤¤¥¤¤¤¤¤

5. • Select the finish time for the block and press to save.

Mon 06:50 � ECO *¥¥¥¥¥¥¥¥¥¥¥¤¤¤¤¤

6. Return to step 1 to edit the next period, if necessary.

Weekdays Period Climate level

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5.8 The TOUCH panel

5.8.1 TOUCH panel – QUICK GUIDE for the VEX100 range

Operating switches

The lights

SwitchPress the switch when …

Activation of ventilation by …

NB

A there are people in the room.

high air replacement (preset level).

Can be set for automatic cut-out via the timer function.

B people leave the room.

low air replacement or stop (preset level).

Can be set to cut out other TOUCH panels, if any.

Light is … Meaning

C

red Alarm. Contact the person responsible for operation.

yellow unusual operation. If the light remains illuminated for an extended period, contact the person responsible for operation.

D green High air replacement selected from this panel.

AB

C

D

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5.8.2 The diodes

5.8.3 Using the TOUCH panel to adjust the indoor climate

The clock (menu 4) The clock is used to control the programmed weekly plan for indoor climate levels. The clock basically “decides” the applicable indoor climate level.

Function 2 selectedThe chart below shows the applicable climate level when the TOUCH panel is activated (and function 2 “Timer function – Master” has been selected behind the panel. See the section entitled “Setting the address and function of the TOUCH panel”):

*) Menus 431– 438 can be used to set the time limitation.

Diode … Meaning

A is red Alarm, contact the person responsible for operation. Read the alarm number from the DISPLAY panel in menu 81 and refer to the section entitled “List of DISPLAY panel alarms”.

A is yellow The filters in the unit must be replaced.

B is green Comfort level operation – selected from this panel.

B is not illuminated • Economy or Standby operation. • Unit off.• Comfort level operation – but selected from a different

panel.

A

B

Indoor climate level according to the clock’s

weekly plan

Indoor climate level when you press

Indoor climate level when you press

Comfort Standby Comfort (timer defined)*)

Standby Standby Comfort (timer defined)*)

Economy Economy Comfort (timer defined)*)

Unit stopped Unit stopped Comfort (timer defined)*)

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Method of operation

The filter controls monitor the filters in the air handling unit by registering pressure drop across them. A filter control is fitted to each filter. When the pressure drop exceeds the value entered for the filter control, the light diodes on the DISPLAY and TOUCH panels turn yellow. The information number i..in menu 3 indicates which filter control has been triggered.

Positioning The filter controls are fitted in the connection box at the top of the VEX unit. The filter controls are secured with snap locks so they are easy to remove for setting purposes, for example.

Factory setting From the factory, the filter controls are set to the lowest value on the scale. The diode on the panels will therefore turn yellow when the unit is started.

Settingthe filter controls

EXHAUSTO recommends that you replace the filters when the pressure drop has increased by 100 Pa, which is equivalent to a reduction of the airflow by 12–15%. However, the filters must be inspected every 6 months, and must be replaced at least once a year. The filter control values can be altered if a different interval between filter replacements is required, or if requirements regarding the permissible drop in the unit’s airflow before filter replacement have been laid down.

NB Before setting the filter controls:• Initial adjustment concerning the max. airflow of the unit must be carried

out.• The filters must be clean.

Set the filter controls as described in the chart below

5.9 Setting the filter controls

Step Action

1 Remove the lid from the connection box.

2 Use the DISPLAY panel to set the max. airflow:• Select menu 1 and set the value (0–10) to 10 or to the maximum

applicable airflow.

3 Make sure that any dampers in the duct system are open.

4 Turn the filter control scale up until the (yellow) diode on the DISPLAY panel is extinguished.

5 Slowly turn the filter control scale down until the (yellow) diode on the DISPLAY panel is illuminated again.NB The system reacts very slowly, so the adjustment must be carried out slowly. Repeat the adjustment process if necessary.

6

7 Determine the pressure drop value for filter replacement (EXHAUSTO recommends setting the filter control to the value read + 100 Pa).

8 Set the filter control so that the arrow points to the required pressure drop.

Read the value indicated by the arrow.

RD10

274-01

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3001640-VEX140H-HCE-2011-01-01 Maintenance

6.Maintenance

Layout drawing The drawing shows the positioning of the measuring points for the VENT arrangement in the unit:

6.1 Measuring points for pressure, temperature and air-flow

VEX 140-150-160

Hose no. 1 2 3 4 5 6 7 8

Designation on drawing

qv2- qv2+ qv1- qv1+ PDS2- PDS2+ PDS1- PDS1+

Hose colour pink red light blue blue light green green light brown brown

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Measurements

Type Calculations

Airflow Use the following equation and the “Duct 12” diagram at the end of this section to calculate extraction airflow qv1.

Use the following equation and the “Duct 22” diagram at the end of this section to calculate supply airflow qv2.

Pressure loss for

Extraction filters are calculated on the basis of the following equation.

Outdoor air filters are calculated on the basis of the following equation.

Cross-flow heat exchanger, extraction side, is calculated on the basis of the following equation.

Cross-flow heat exchanger, supply side, is calculated on the basis of the following equation.

pHCE is stated in the section entitled “Technical specifications”.

Pressure rise across the fans

Extraction side, is calculated on the basis of the following equation.

p12 is measured in duct 12.

Supply side, is calculated on the basis of the following equation.

p22 is measured in duct 22.

Temperature efficiency

Read the temperature in the DISPLAY panel, and calculate the efficiency as follows:

When taking temperature measurements, the energy supply to the post-heating coil must be disconnected (see the item concerning heating coils) and the outdoor air temperature must be below +10 °C.NB: When comparing with catalogue data, the volume flow ratio must be 1.0 or 0.8.

Assimilated output

• The total electricity supply to the fans and electric heating coil is to be measured in the respective power supply cables by the service switch or the fuse box.

NB: The actual output of the heating coil may be limited by the temperature conditions. Please also refer to the specifications and information plate.

p qv1+ qv1- Pa –=

p qv2+ qv2- Pa –=

p PDS1+ PDS1- Pa –=

p PDS2+ PDS2- Pa –=

p PDS1- qv1+ Pa –=

p PDS2- qv2+ pHCE – Pa –=

p p12 qv1+ Pa –=

p p22 qv2+ Pa –=

tTE22 TE21–TE11 TE21–------------------------------------=

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Airflow measurement,ExtractionVEX140 HCE

Airflow measurement,SupplyVEX140 HCE

Accuracy of airflow measurement: %

Duct 12 (extract air)

Duct 22 (supply air)

8

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Recommendedintervals

The chart below contains the recommended intervals for maintenance ofthe unit. The intervals are guidelines for normal operating conditions. EXHAUSTO recommends that you adapt the maintenance of the unit to suit the applicable operating conditions.

6.2.1 Cleaning the fans

6.2 Maintenance chart

Months

12 24

Filters

• To be replaced when the diode on the panels turns yellow. The information number in menu 3 indicates which filter control has been triggered. When you remove the filters, immediately place them in a plastic bag, seal it and dispose of it in a responsible manner. You should change the filters at least once a year.

×

• Check that the seals in the filter frames seal tightly. ×

Seals and sealing strips

• Check that they all seal tightly. ×

Fans and heating coil

• Check. ×

• Cleaning – see the following section. ×

Cross-flow heat exchanger/bypass damper

• Check. ×

• Cleaning as required – see the following section.

Condensation outlet

• Pour water into the condensation tray to check that the outlet is not blocked.

×

Checking the safety functions

• Fire thermostats ×

Closing damper and flue gas damper

• Check ×

Step Action

1 Switch off the power supply to the unit at the repair switch.

2 Clean the impeller with a vacuum cleaner and wipe down with a damp cloth if necessary. Clean the blades on the impeller carefully to avoid disrupting the balance. If there are weights on the impeller, these must not be removed.

3 After cleaning the impeller, check that the unit does not vibrate when operating.

Checking the hoses to the measuring points

4 Remove the hoses from the connection box.

5 Blow through the hoses to remove impurities.

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6.2.2 Cleaning the heating coil

6.2.3 Cleaning the cross-flow heat exchanger

Step Action

1 Switch off the power supply to the unit at the repair switch.

2 Vacuum clean the heating coil.

3 Check that the fins on the heating coil are not deformed.

The fins are sharp.

Step Action

1 Switch off the power supply to the unit at the service switch.

2 Remove the contact between the bypass motor and the unit.

3 Remove the cross-flow heat exchanger.

4 Press the trigger button on the bypass motor and turn the damper to open the blind.

5 Remove the bypass motor before the cross-flow heat exchanger is cleaned with water. See the drawing.

Do not activate the trigger button on the bypass motor while it is disassembled as this will alter the position of the motor in relation to the damper.

6 Spray the cross-flow heat exchanger with hot water. You can also use a high-pressure water jet to clean it. Max. water temperature 90°C.

7 Refit the bypass motor. The damper must be in the same position (air vane fully open) as when the motor was removed.

8 Close the air vane, replace the cross-flow heat exchanger and re-connect the bypass motor cable.

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3001640-VEX140H-HCE-2011-01-01 Troubleshooting

7.TroubleshootingNB In the event of errors or irregular operation of the unit.

• Check the alarm list in menu 81 on the DISPLAY panel to see the alarm message, and then refer to the supplement entitled “List of alarms and menus for VEX140-150-160-170”.

Alarm listmenu 81

Press and turn the switch on the DISPLAY panel to view the last 10 alarms on the alarm list.

The alarms are divided up into two levels:• Alarms named: A01, A02, A...

These alarms must be investigated and reset straight away.• Information messages named: i20, i40, i...

Identify the cause …

Alarms may only be reset if the cause of the alarm has been corrected.

Menu 82 All the alarms can be reset in one of the following ways: • Resetting alarms by selecting “yes” in menu 82 (“Reset alarm”). • Switch off the power supply to the unit for around 30 seconds.

Multiple alarms If several alarms are active, they will all be cancelled simultaneously.

Repeated alarms If an alarm is triggered repeatedly, contact a service technician.

81 Alarm list *

A14 22 Mar 13:02

7.1 Resetting alarms

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Error display Errors in the EON-BUS system can be displayed in the following ways:• The DISPLAY panel shows one of the following alarm or information codes:

i40, A41, A55, A56.• The background illumination in the DISPLAY panel flashes.• The DISPLAY panel monitor is blank.

Start by … • disconnecting the DISPLAY panel from the test cable in the connection box, if necessary.

• disconnecting the cables from all other modules• disconnecting the cables from terminals 5, 6, 7, 8, 9, 10, 11 and 12.

Short-circuit errors If you discover that the communication section of the automatic products is burned out, it is likely that the cables have short-circuited. Therefore, check the cables and set-up before replacing the automatic products with new ones.

7.2 Trouble-shooting via the EON BUS

External Connection Box Module

Step Action Expected values Comments

Checking the unit

1 Measure supply voltageTerminals 5–6 and 9–10

24VDC (19,2 - 24V)

2 Measure communicationData: terminals 5–7 and 9–11

Clock: terminals 5–8 and 9–12

4,8V ±0,2V

4,8V ±0,2V

(1 - 3V = defective automatic device)(1 - 3V = defective automatic device)

Checking the DISPLAY panel

3 Connect the DISPLAY panel to the test cable in the connection box.

4 Measure supply voltageTerminals 1–2

24VDC (19,2 - 24V)

5 Measure communicationTerminals 1–3Terminals 1–4

4,8V ±0,2V 4,8V ±0,2V

(1 - 3V = defective Display)(1 - 3V = defective Display)

Checking the internal modules

6 Fit cables 9–12 in the connection box.

7 Repeat the measurements from steps 1 and 2

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• If the expected voltages are recorded without correct function being achieved, this may be due to inversion of the data and clock (terminal 3 and terminal 4). Alternatively, the module or the connection may be defective.

• If the expected voltages are not recorded, it is likely that there is a fault in the cables or the set-up itself.

Component errors • When replacing defective components, it is a good idea to check the installation for loose connections and damaged cables, which may cause short circuits.

A01 Error in extraction fan motor or the motor’s output control.

NB The alarm can only be reset by disconnecting the supply voltage for approx. 30seconds.

A02 Error in supply motor or the motor’s output control.

NB The alarm can only be reset by disconnecting the supply voltage for approx. 30seconds.

8 Fit the modules one at a time and measure themPower supply: terminals 1–2Data: Terminals 1–3Clock: Terminals 1–4

24VDC (19,2 - 24V)4,8V ±0,2V 4,8V ±0,2V

(1 - 3V = defective module)(1 - 3V = defective module

Checking the external modules

9 Fit cables 9–12 in the connection box.

10 Repeat the measurements from steps 6 and 7.

Step Action Expected values Comments

7.3 Alarm list: Causes of errors and remedial measures

Step Action

1 Check whether the motor or motor control is dirty, as this will cause insufficient cooling.

2 Check that the motor runs at more than 300 rpm when the unit is operating at U1 min.:Overheating may be due to insufficient airflow. Menu 574 can be usedto increase the minimum revolution speed of the motor (25% of max.airflow).

Step Action

1 Check whether the motor or motor control is dirty, as this will cause insufficient cooling.

2 Check that the motor runs at more than 300 rpm when the unit is operating at U2 min.:Overheating may be due to insufficient airflow. Menu 575 can be used to increase the minimum revolution speed of the motor (25% of max. airflow).

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A08–A15 Temperature sensor errors (see alarm overview)

i20 De-icing of the cross-flow heat exchanger in progressIf this information is frequently displayed, it may be due to:

• incorrect setting of the de-icing parameters.• the cross-flow heat exchanger being dirty.

A21 De-icing of the cross-flow heat exchanger not completed correctlyThis alarm is triggered if i20 has been active for longer than the required alarm time (menu 727). Causes of error, see i20.

A30 Fire thermostat disconnected• Check all the fire thermostats connected, and the cables between them. • Reset any disconnected fire thermostats.

The fire thermostats must be connected as a closed circuit, and the circuit must therefore be fully connected at temperatures below the value set for the fire thermostat.

i40 Bus unit missing1. All EON bus units are registered when the unit is started, and are then monitored by the control system.

• A message is generated by the system if a bus unit disappears during operation (i40). If the bus unit in question is important for the operation of the unit, an alarm is triggered and the unit is stopped.

• An i40 message is also sent if the DISPLAY panel is used to switch to specialist mode.

Check that all the panels fitted are registered in the control system:• Go to menu 921• Press the switch.• Turn the switch to check through the list.

2. The cause may also be electrical interference (EMC) from other units or installations.Check that the installation has been set up according to normal EMC guidelines by:

• Moving the EON cable away from other cables, or• Letting other cables cross the EON cable at an angle of 90°.

A41 EON pressure AI module missingAn airflow control method involving pressure measurements has been selected, but the AI module has not been fitted.

• Check that the AI module has been fitted correctly and that the address has been set correctly.

i42 DISPLAY panel in specialist mode connected

i43 Timer backup battery exhausted.

When the alarm number is an …

the error may be due to a …

Registered when the temperature is …

odd number short-circuited sensor below -50°C

even number disconnected sensor above 50°C

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i50 The 70°C overheating thermostat of the electric heating coil – with automatic reset (TSA70) – has been triggered

• If this information appears frequently, check the same points as apply to A51.

A51 The 90°C overheating thermostat of electric heating coil – with manual reset (TSA90) – has been triggered This alarm may have been triggered because the supply airflow through the unit is less than 220 m3/h (60 l/s). Use pressure measurement to check the supply airflow as described in section 6.1, “Measuring points for VENT arrangement”.

A54 Lack of airflow to electric heating coil, HCEThis alarm is triggered if the airflow falls below 220 m3/h (60 l/s), and, at the same time, you wish to increase the heating output.

A56 Lack of communication to electric heating coil, HCEThis alarm is triggered if communication to the HCE module is disrupted for more than 10 seconds. If necessary, see i40.

i60 and i65 Filter control triggeredThis information is displayed when the pressure across the filter is higher than the pressure entered in the pressure switch of the filter control.

• Check that the filter is not dirtyi60: Filter control for extraction filter (PDS1). i65: Filter control for outdoor air filter (PDS2).

• Check the setting of the filter control. If necessary, see the section entitled “Setting the filter controls”.

NB The pressure across the filter depends on the airflow.

i61 and i66 Extraction/aspiration airflow lacking.The deviation has been higher than 25% of the required airflow for more than 5 min.

• Check whether the filter, the unit or the duct system is dirty.• Check that the set point (511/512) is covered by the performance of the unit.• Check whether the AFC has been fitted correctly.

i62 and i67 Extraction/aspiration pressure lacking.The deviation has been higher than 25% of the required airflow for more than 5 min.

• Check whether the filter, the unit or the duct system is dirty.• Check that the set point (511/512) is covered by the performance of the unit.• Check that the VAV damper (if fitted) is functioning correctly.

The alarm may be due to … Check …

the fact that (AFC-alarm) has been selected via the control system, but the AFC accessory has not been fitted correctly.

the accessory:• Go to menu 532 • Read the current airflow and compare it

with the measurement taken from the unit.

the fact that the value selected for MOTOR_2_MIN (menu 575) is too low (depending on duct properties).

the airflow as in A51:

the fact that the filters, ducts, cross-flow heat exchangers or motors are dirty.

Check and clean if necessary.

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3001640-VEX140H-HCE-2011-01-01 Technical specifications

8.Technical specifications

Weight Doors 2 13.5 kgCross-flow heat exchanger 27 kgFan unit 2 16.5 kgUnit for internal transport (without doors, fan unit and cross-flow heat exchanger) 105 kgTotal weight of the unit 192 kg

Corrosion class Corrosion class C4 (EN ISO 12944-2)

Temperatureranges:

Medium temperature (air): -30°C...35°CAmbient temperature: -30°C...50°C

DISPLAY panel: Protection class: IP20Ambient temperature: 0°C...50°C

TOUCH panel: Protection class: IP20Ambient temperature: -20°C...50°C

Fire thermostats Cut-out temperature, BT70: 70°CCut-out temperature, BT50: 50°CCut-out temperature, BT40: 40°C

Max. ambient temperature, sensor: 250°CAmbient temperature, thermostat housing: 0–80°CSensor length: 125 mmProtection class: IP40

Temperature drop before reconnection is possible: min. 15ºK.

Motor damper

No more than two LSFR/LSAR dampers or four LSA/LSF dampers may be connected.

8.1 Weight, Corrosion class, Motor dampers, etc.

Type LS315-24 LSR315-24

Type: LSA/LSF LSFR/LSAR

Motor type NM24-F AF-24

Revolution time 75–150 s open150 sclose16 s

Protection class IP42 IP42

Ambient temperature -20...50 °C -30...50 °C

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Filter panelsPressure loss graphs for F5 and F7VDI filters

Data Unit F5 F7VDI

Filter panel hb mm 490 648 490 648

Filter panel thickness mm 96 96

Filter area m2 3.7 11.5

Filter class F5 F7 VDI

Retention degree according to EN 779 % 96 >99

Efficiency % 45 85

Volume flow m3/h 2200 2200

Initial pressure drop Pa 38 89

Recommended final pressure drop at normal volume flow

Pa 138 189

Temperature resistant up to °C 80 80

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Voltage per electric heating bar: 1 × 230 VOutput per electric heating bar: 1.2 kWVoltage supply to connection box:- Star connection 3 × 400V + NThermal cut-out TSA 70: 70°CThermal cut-out TSA 90: 90°CTemperature tolerance: ±5 KTemperature drop before reconnection is possible:15 K

Diagram The diagram below can be used to determine the air temperature increase at a given airflow and electric heating coil area.

Pressure loss across electric heating coil

At full airflow, 1800 m3/h:

• HCE 7.2 kW: 10 Pa• HCE 14.4 kW: 15 Pa

8.2 Electric heating coil

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Unit withFC motor

8.3 Capacity diagrams

Capacity diagram with F5 filtres

SFP-curve

Working lines

A : Pressure loss increase when using F7filters

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Production numberWhen ordering spares, please state the relevant production number. This will make sure that you receive precisely the parts you need. The production number is written on the front page of the instructions supplied with the unit. It is also included on the boilerplate.

Spare Parts List The following parts are available as spare parts for the VEX. Parts not included in the list can be manufactured on request. Please call EXHAUSTO (see phone number on the back of the book of instructions).

*) The correct type cannot be traced via the production number. Instead, please state the data from the component itself or the order number.

8.4 Parts list for ordering spares

Part

1. Impeller.

2. Motor.

3. Bearings set (complete with two bearings and accessories) for repairing a motor.

4. Motor control.

5. Power supply.

6. Automatic device.

7. Temperature sensor (repair set for 1 x sensor).

8. Vibration absorber for motor fitting.

9. Bypass damper motor.

10. Display module.

11. HCE-module master.

12. HCE-module slave.

13. Filter control pressure switch.

14. Damper motor for shut-off damper *).

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EXHAUSTO A/SOdensevej 76DK-5550 Langeskov

Tel. +45 65 66 12 34Fax +45 65 66 11 [email protected]

3001640-VEX140H-HCE-2011-01-01 Product Instruction

EXHAUSTO A/SOdensevej 76 DK-5550 LangeskovTel.: +45 6566 1234Fax: +45 6566 [email protected]

EXHAUSTO GmbHAm Ockenheimer Graben 40D-55411 Bingen-KemptenTel.: +49 6721 9178-112Fax: +49 6721 [email protected]

EXHAUSTO NORGE A/SIndustriveien 25N-2021 SkedsmokorsetTel.: +47 6387 0770Fax: +47 6387 [email protected]

EXHAUSTO Ventilation Ltd.Unit 1, Pelham Court Pelham PlaceBroadfield - CrawleyWest Sussex - RH11 9SHTel. +44 (0) 1293 511555Fax +44 (0) 1293 533888info@exhausto-ventilation.co.ukwww.exhausto-ventilation.co.uk

EXHAUSTO ABVerkstadsgatan 13S-542 33 MariestadTel.: +46 501 39 33 40Fax: +46 501 39 33 [email protected]

SCAN-PRO AGPostfach 74CH-8117 FällandenTel.: +41 43 355 34 00Fax: +41 43 355 34 [email protected]

EXHAUSTO SuomiNummiperkontie 21FI-21250 MaskuTel.: +358 45 113 2628Fax: +358 2 432 0013 [email protected]

INATHERM B.V.Vijzelweg 10NL-5145 NK WaalwijkTel.: +31 416 317 830Fax: +31 416 342 [email protected]

BM Vallá hfStórhöfda 23IS-110 ReykjavikTel.: +354 530 3400 Fax: +354 530 [email protected]

VEX140 Horizontal - EXHAUSTO

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