Xpelair Xcell 150 QV User manual

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Installation and
Operating Instructions
Xcell 150 QV
Xcell 150 QVW
Mechanical Ventilation Unit with Heat Recovery
Please ensure these instructions are kept safe and accessible at all times.

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Table of Contents
1General Information....................................................................................................................3
2Components and Materials of Construction .............................................................................3
3Regulations and Safety Instructions .........................................................................................3
4Application and Planning...........................................................................................................4
4.1 Application.......................................................................................................................................... 4
4.2 Operation Overview............................................................................................................................ 4
4.3 MVHR installation planning................................................................................................................. 4
5Assembly and Installation..........................................................................................................5
5.1 General information: ........................................................................................................................... 5
5.2 Impact noise reduction:....................................................................................................................... 5
5.3 Connecting the ducting: ...................................................................................................................... 5
5.4 Duct connections: ............................................................................................................................... 6
5.4.1 Left-handed installation duct connections (viewed from the top of the MVHR)............................... 6
5.4.2 Retaining bracket to prevent extraction of the heat exchanger...................................................... 6
5.5 Installation.......................................................................................................................................... 7
5.5.1 Wall-mounting the MVHR............................................................................................................. 7
5.5.2 Installation of the ducting.............................................................................................................. 7
5.6 Condensate drain ............................................................................................................................... 7
5.7 Typical installation example ................................................................................................................ 7
5.8 Installation dimensions........................................................................................................................ 8
6Technical Data.............................................................................................................................9
6.1 Air volume flow rates can be adjusted on the PCB by service technicians only:................................... 9
6.2 Adjustment of air volume flow rate (m3/h) for supply air / exhaust air fans:........................................... 9
6.3 Port pins for the connection of a voltmeter:.......................................................................................... 9
6.4 Factory speed settings:....................................................................................................................... 9
6.5 Technical data:..................................................................................................................................10
6.6 Applied Energy accessories for manual or automatic operation:.........................................................10
6.7 Applied Energy spares available:.......................................................................................................10
7Electrical Wiring Diagrams.......................................................................................................11
7.1 Manual 2-speed switch (Xcell 150 QV only) .......................................................................................11
7.2 PCB with 3-speed switch (Xcell 150 QVW only).................................................................................12
7.3 PCB with 3-speed switch & CO2sensor (Xcell 150 QVW only)...........................................................13
7.4 PCB with 3-speed switch, CO2sensor & up to 3 off Humidistats (Xcell 150 QVW only).......................14
7.5 PCB with 3-speed switch & up to 4 off Humidistats (Xcell 150 QVW only)...........................................15
8Controller Functions.................................................................................................................16
8.1 MS2 manual 2-speed switch..............................................................................................................16
8.2 Q3SP automatic 3-speed switch ........................................................................................................16
8.3 QCO2CO2Sensor .............................................................................................................................17
8.4 QHS humidistat sensor ......................................................................................................................17
8.5 Automatic defrost (anti-icing protection) .............................................................................................18
8.6 Fan fault monitoring...........................................................................................................................18
9Maintenance..............................................................................................................................19
9.1 Filters................................................................................................................................................19
9.2 Removing and re-fitting the filters.......................................................................................................19
9.3 Air Filter Box (optional extra accessory) .............................................................................................19
9.4 Cleaning the heat exchanger .............................................................................................................20
10 Malfunctions..............................................................................................................................20
10.1 Fault locating table.............................................................................................................................20
10.2 Installation of replacement fans..........................................................................................................21
11 Customer Notes (to record details of filter / recuperator cleaning etc.)................................23
Maintenance Log.............................................................................................................................26
GUARANTEE....................................................................................................................................28

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1General Information
Read all these instructions & warnings fully before
commencing installation.
These installation and operating instructions must
be observed during installation, operation, service
and maintenance. This MVHR should only be in-
stalled and repaired by a qualified service techni-
cian. Improper repairs may expose the user to con-
siderable danger. Under current regulations, the
installation and operating instructions must be ac-
cessible at all times and must be handed to the
technician for reference whenever work is being
done on the MVHR. We would therefore ask that
upon moving out of these premises, you pass the
instructions on to the next tenant/owner. Should
there be any visible damage the MVHR must not be
connected. In this case, it is imperative that you
contact your supplier. Only use original spares in
order to avoid secondary damage. Please ensure
that all packaging materials are disposed of prop-
erly in accordance with current environmental re-
quirements.
2Components and Materials of Construction
The MVHR comprises of the following main compo-
nents:
Outer Panels:
PE plastic, white
PS plastic, black
Maintenance access cover:
PS plastic
Ducting spigots, Ø125mm:
PP plastic, light grey
Internal air paths / casing:
EPP, black
Filters:
G4 fitted as standard. External filter box F5 or F7
available as special accessory
Heat exchanger:
The heat exchanger is made from fully recyclable
PS plastic. The heat exchanger integrated into the
MVHR is based on the counter flow principle with
triangular air ducts for supply and exhaust air.
Fans:
Energy-saving EC DC fans with optimal efficiency.
3Regulations and Safety Instructions
The Xcell150 MVHRs are tested in accordance with
the low-voltage directive 2006/95/EC and EMC
directive 2004/108/EC.
This appliance is not intended for use by persons
(including children and the infirm) with reduced
physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been
given supervision or instruction concerning use of
the appliance by a person responsible for their
safety.
Ensure that all relevant safety precautions (correct
eye protection and protective clothing etc) are taken
when installing, operating and maintaining this
MVHR. Observe the safety regulations and warn-
ings contained in this manual at all times. Failure to
do so may result in damage to the unit or personal
injury.
This MVHR is intended for connection to fixed wir-
ing.A means for disconnection must be incorpo-
rated in the fixed wiring. Installations and wiring
must conform to current IEE Regulations (UK), local
or appropriate regulations (other countries). All
installations must be supervised by a qualified elec-
trician. It is the installer’s responsibility to ensure
that the appropriate building codes of practice are
adhered to.
This MVHR must not be installed near to sources of
direct heat such as cookers/grills or where ambient
temperatures may exceed 50•C.
When the MVHR is installed in a room containing a
fuel burning appliance, precautions must be taken
to avoid the backflow of gases into the room from
the open flue of the fuel burning appliance.
The instructions on periodic cleaning and/or chang-
ing of the filters, the air inlet/outlet valves and the
air inlet/outlet grilles must be strictly observed.
The unit may only be connected to a 220-240V AC
power supply.
The following applications / installations are
prohibited:
The use of excessive fat-contaminated exhaust
air, extracting explosive gases, extracting parti-
cle-contaminated air, extracting adhesive par-
ticulate matter.
Installing the MVHR outdoors
Connecting extractor hoods in the ventilation
system
Servicing of the MVHR may only be carried out by a
qualified service technician. Contact details for
authorised servicing by Xpelair approved techni-
cians can be found on the back of this booklet.

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4Application and Planning
4.1 Application
This MVHR is intended for installation in ventila-
tion systems in houses, residential buildings and
light commercial applications e.g. offices and
meeting rooms etc. Upon completion of the sys-
tem, there should be no safety, health or envi-
ronmental risks present. The manufacturer of
the MVHR assumes no liability for this.
4.2 Operation Overview
Using two fans, each above a filter in separate
ducts, the MVHR draws in external air from the
outside and exhaust air from odour-
contaminated and moisture-laden rooms
(kitchen, bathroom, WC) in the house. Both of
these air flows are passed through a cross
counter flow heat exchanger whereby the ex-
haust air releases heat and the external air ab-
sorbs heat. The air ducts are separated from
one another to prevent odour pollution between
external and exhaust air.
Using suitable air ducts and adjustable air inlet
valves (separate accessories), the heated exter-
nal air is blown into the house and the cooled
exhaust air is ducted out of the building.
There are numerous accessories available for
controlling the MVHR, see section 6.6.
4.3 MVHR installation planning
MVHR system designs must comply with the
current standards or the approved edition on the
original planning consent.
Approved documents for Building Regulation in
England and Wales:
Part B:
Approved Document B (Fire Safety) -
Volume 1: Dwellinghouses.
Approved Document B (Fire Safety) -
Volume 2: Buildings other than dwel-
linghouses.
Part F:
Approved Document F -Ventilation.
Part L –Dwellings:
Approved Document L1A: Conservation
of fuel and power (New dwellings)
Approved Document L1B: Conservation
of fuel and power (Existing dwellings)
Part L –Buildings other than dwellings:
Approved Document L2A: Conservation
of fuel and power (New buildings other
than dwellings)
Approved Document L2B: Conservation
of fuel and power (Existing buildings
other than dwellings)
Scottish Building Standards approved technical
handbooks:
Domestic Handbook:
Section 2 –Fire
Section 3 –Environment
Section 6 –Energy
Non-domestic Handbook:
Section 2 –Fire
Section 3 –Environment
Section 6 –Energy

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5Assembly and Installation
5.1 General information:
The MVHR should be aligned horizontally using
a spirit level (for reliable condensate drainage).
The mains voltage must be 220-240V/ 50-60
Hz.
If mounting on low density walls i.e. plaster
boarded stud walls use the following fixing
method:
Use 15 mm nominal plywood backing board
to connect directly to the wall internal frame
stud and then mount the MVHR unit on the
plywood.
Ensure internal thermal or sound insulation
is installed inside the stud wall to prevent
reverberation.
The MVHR must be installed in a frost-free room
preferably within the thermal envelope in order
to keep heat losses via the MVHR surfaces and
ventilation ducting to a minimum. Cellars, store
rooms and insulated attics are suitable for this
purpose.
The MVHR may only be installed in dry, non-
explosion-proof rooms (protection category IP
20). The ambient temperature must not exceed
+50°C.
This MVHR must not be fitted in rooms or areas
of the house with strong odours, which could
then permeate into the MVHR and contaminate
the fresh air supplied from the MVHR.
The following criteria must also be met:
Access is required for maintenance
work (e.g. changing the filter)
The condensate drain must be con-
nected to a closed water trap and must
have a sufficient gap. Approx. 50cm is
ideal.
If the condensate drain is located in a
frost-prone area, then heat tracing must
be provided.
5.2 Impact noise reduction:
With installation on wooden floors or other vibra-
tion-prone components, there may be combined
impact noise (use foam rubber mounts).
5.3 Connecting the ducting:
To prevent the transmission of vibrations, the
ducting should be connected flexibly to the
MVHR (e.g. using flexible ducting or fabric duct
fittings).
All ducting located in loft spaces and roof voids
etc., which are unheated, must be insulated, to-
gether with the duct runs from the unit to atmos-
phere.
All ducting fitted to the spigots on the MVHR
should be secured in place with jubilee clips or a
suitably sized plastic cable tie.
Dia. 125mm duct spigots