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Installation

IT IS IMPORTANT THESE INSTRUCTIONS ARE
READ FULLY BEFORE INSTALLATION

This product should not be used for any purpose other
than that for which it was designed and as shown
in this leaflet

All packaging should be removed and the unit checked
for damage in transit.  If there is any damage, please 
contact your supplier

The WHHR125DC- Aera will be installed vertically, and
generally be fitted into a cupboard, loft or ceiling void.  

In order to comply with Construction (Design & 
Management) Regulations, sufficient access for safe
maintenance (recommended on an annual basis),  or
removal following installation, MUST be provided for
this product.  See dimensions diagram.

Regulations and current Building Regulations.  In order
to comply with these, it may be necessary to fit fire 
dampers or other similar devices.

Flue gases from fuel-burning equipment must not 
be drawn into a living area.  If any room from which 
air is extracted contains a fuel burning appliance, 
such as a central heating boiler, then its flue must 
be of the sealed or balanced flue type, or allowance 
must be made for an adequate supply of air into the
room.

The unit must

NOT

be installed:

-

where there is excessive oil or grease

-

where there are hazardous gasses, liquids or 
vapours that are flammable or corrosive

-

in ambient temperatures above 40ºC or lower than
0ºC

-

in areas of excessive humidity or in a wet 
environment

Where possible the unit should 

NO

T be installed 

directly above a bedroom or living room.  

The condensation drain 

MUST

be fitted

Care should be taken to ensure that ducting is free from blockages

External grilles should be located a minimum of 600mm from any flue outlet in accordance with all
Regulations

The unit must be connected to a 230v, 50Hz single phase electrical supply fused at 3A.  

•    A triple pole isolation switch with contact  separation of at least 3mm must be used to connect the appliance

     to the fixed wiring when using the Switched Live. 

    The product should only be connected to the mains electricity supply or electrical outlet if:

     -    your electrical voltage and frequency correspond to those shown on the rating label.
     -    the capacity of your electricity supply is sufficiently powerful to operate the product at its

          maximum power.

    If one of the spigots is not connected to ducting a safety grille 

MUST 

be fitted to that spigot, so that it is 

     impossible for any moving part to be touched.

Installation of the appliance 

MUST

be carried out by a qualified and suitably competent person and should be 

carried out in clean, dry conditions where dust and humidity are at minimal levels. The unit is not suitable for 
installation to the exterior of the dwelling.

Page 3

Incoming

fresh air

Cooled

outgoing 

stale air

Fresh 
air out

Stale 

air in

Summary of Contents for WHHR125DC

Page 1: ...WHHR125DC Aera Residential Whole House Heat Recovery Unit with Low Energy DC Motor Installation Operating and Maintenance Instructions...

Page 2: ...the loft of a house or the void above the ceiling in an apartment or in a cupboard It will be connected by hidden ductwork to vents sited in the ceilings of the rooms which are to be ventilated Each...

Page 3: ...le or corrosive in ambient temperatures above 40 C or lower than 0 C in areas of excessive humidity or in a wet environment Where possible the unit should NOT be installed directly above a bedroom or...

Page 4: ...l mounting bracket 1 x Safety bracket 2 x 15mm Drain connectors 4 x M6 screws and wall plugs 1 x self tapping screw 1 x Installation Operation Maintenance Instructions Any parts shortages or faults mu...

Page 5: ...he interlocking side is at the top as shown 5 Mount the unit by locating the bracket on the back of the unit securely over the mounting bracket 6 Fix the lower safety bracket as shown Screw and plug s...

Page 6: ...hold drainage system via a U bend which must act as an air lock 7 The unit has two drain condensation outlets with two fittings and bungs to seal off one of the outlets 8 In UK climate conditions the...

Page 7: ...ical Connection WARNING these appliances must be earthed and all wiring must conform to current IEE Regulations and all applicable standards and Building Regulations The unit is suitable for 230V 50Hz...

Page 8: ...volumes will not always be equal When setting up therefore the extract system should be the datum Commissioning Procedure Ensure that the exhaust and supply grilles or valves are open Turn the electri...

Page 9: ...suitably qualified person the frequency of cleaning will vary depending on the installation environment Remove the access panel Slide out the filters that are fitted either side of the heat exchanger...

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