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  2.0  Installation Instructions

 

2.1  General Preparation

 

2.1.1

 

The ComfoAir CA155WM / CA155CM unit is supplied with 4 x 125mmØ spigots.

125mm ducting with connectors can be used 

(see Ancillary Section page 3)

 to provide performance 

levels required for compliance with local Building Regulations. 

 

2.1.2

 

The ComfoAir CA185WM unit is supplied with 4 x 150mmØ spigots.

150mm ducting with connectors can be used 

(see Ancillary Section page 3)

 to provide performance 

levels required for compliance with local Building Regulations. 

 

2.1.3

 

Installation of the unit should be in accordance with the current editions of local Building Regulations and IEE 

or local Wiring Regulations.

 

2.1.4

 

The design, material specification and installation must only be carried out by "competent persons". Electrical 

installation must be carried out by a qualified Electrician.

 

2.1.5

 

IMPORTANT NOTE: Gases from fuel-burning equipment must not be drawn 

into any living areas. If any room, where air is extracted, contains a fuel-

burning appliance such as a central heating boiler, then either of the following 

should be undertaken:

The flue must be of the room sealed or balanced flue type or; 

Allowance must be made for an adequate supply of air into the room.

 

2.2 Positioning

 

2.2.1

 

The ComfoAir CA155WM / CA185WM unit must be installed vertically and can be either wall or floor mounted 

to enable effective condensate drainage in either a kitchen/service cupboard or secured to a vertical structure 

in the loft space. Duct spigots must be upright at top of unit.

 

2.2.2

 

The ComfoAir CA155CM unit must be installed horizontally with the fixing brackets provided. The unit is not 

intended for installation within a utility room.

 

2.2.3

 

It is not advisable to install the unit directly above a bedroom or living room ceiling, or in an area that is part of 

a living area or bedroom.

 

2.2.4

 

Consideration must be given to allow for adequate access for servicing, maintenance and any fault 

diagnostics 

(See Section 2.5 Access for Maintenance)

 

2.2.5

 

The unit can be configured for right and left hand installation at a touch of a button by following the steps 

within the Commissioning Wizard 

(See Section 3.1.4 Commissioning Wizard)

 and does not require any 

internal changes. 

(See Figures overleaf for ducting configuration)

.

5

Summary of Contents for ComfoAir Compact CA155WM

Page 1: ...CA155WM CA155CM CA185WM ComfoAir Compact CA155WM CA155CM CA185WM Mechanical Ventilation with Heat Recovery Installation Instructions...

Page 2: ...2 0 Installation Instructions 5 General Preparation 5 Positioning 5 Configuration 6 Mounting 7 Access for Maintenance 9 Condensate Drain 10 Ducting Guidelines 11 Electrical 12 Wiring The Unit 13 Conn...

Page 3: ...ropriate ZGS2 Hardwired switch providing switching between low and high option ZGS2 Hardwired switch providing switching between low and high option 1 1 4 Packaging includes 1 x Heat Recovery Unit 1 x...

Page 4: ...125 50 594 Vireo HR155WM side 298 644 Front View Side View 1 2 2 ComfoAir CA155CM 546 636 125 441 Vireo HR155CM front 733 5 19 320 Vireo HR155CM side Front View Side View 1 2 3 ComfoAir CA185WM 839 60...

Page 5: ...iler then either of the following should be undertaken The flue must be of the room sealed or balanced flue type or Allowance must be made for an adequate supply of air into the room 2 2 Positioning 2...

Page 6: ...INTAKE EXHAUST SUPPLY EXTRACT Left Hand EXTRACT SUPPLY EXHAUST INTAKE Right Hand factory setting Left Hand 2 3 2 ComfoAir CA155CM Right Hand factory setting INTAKE EXTRACT SUPPLY EXHAUST Left Hand EXT...

Page 7: ...in kitchen cupboard There should be no movement once correctly located and the filters should be accessible from easily removing the panels on the front of the unit See Section 4 1 8 and 4 2 0 Homeow...

Page 8: ...bracket on the back of the unit See Figure 3 Securely locate brackets together Figure 2 Figure 3 2 4 8 Tighten loose screws until the unit is securely fitted See Figure 4 add an additional two screws...

Page 9: ...Access for Maintenance 2 5 1 Footprint of ComfoAir CA155WM 500mm HR155WM Top View 2 5 2 Footprint of ComfoAir CA155CM 500mm HR155CM Top View 2 5 3 Footprint of ComfoAir CA185WM 600mm HR185WM Top View...

Page 10: ...s are taken to minimise the risk of mechanical damage to the drainage pipe work IMPORTANT NOTE The condensate drain must incorporate a U bend to create an air block and avoid leakage of smells back in...

Page 11: ...hey must be insulated with at least 25mm of insulation 2 7 4 If applicable Fire Dampers MUST BE FITTED in accordance with local Building Regulations 2 7 5 Rigid Ducting Install using the fewest number...

Page 12: ...MUST be earthed All wiring must conform to IEE or local Wiring Regulations 2 8 2 The installation must be carried out by a qualified Electrician 2 8 3 All units are suitable for a 230V 50Hz single pha...

Page 13: ...UP BMS Connection Wiring Terminal block Wiring E N N L L L1 PCB Terminal Block Triple pole Isolating Switch E Light Switch Light Figure 17 PCB Terminal Block Figure 18 Wiring Specification 2 9 1 Conne...

Page 14: ...ional sensors to High 2 Ground 0V connection to PSU and High Speed Signal 3 N C Isolated relay normally closed contact 4 N O Isolated relay normally open contact 5 Common Isolated relay common contact...

Page 15: ...COMMISSIONING WIZARD Below are examples explanations of what you would see through the Commissioning Wizard P SETUP COMMISSIONING WIZARD O R T C O N F I G R H Example 1 Function selection screen Top...

Page 16: ...High Set up a Factory airflow set at 66 rotate button to required airflow b Press button to select c Rotate button and choose FWD to move to next section or BACK to return to set up d Press button to...

Page 17: ...issioned check that the system is operating correctly by turning the hardwired switch to the differing settings i e the ZGS2 switch will activate the unit between low and high speed settings Performan...

Page 18: ...t r y P A S S W O R D X X X X Press the control button to activate the unit Rotate button until the screen displays Setup Menu Press button to select Enter Password 1010 by rotating the button to the...

Page 19: ...19 4 0 The Guarantee Period 4 1 This Zehnder product ComfoAir CA155WM CA155CM CA185WM has a 2 Year Guarantee 4 1 1 This does not affect your statutory rights 4 1 2 Full details available on request...

Page 20: ...2013 All information is believed correct at time of going to press E OE All goods are sold according to Zehnder s Standard Conditions of Sale which are available on request All dimensions referred to...

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