Xpelair XHR150PC, XHR150HP Installation Instructions Manual

REMOTE CONTROL

TRANSFORMER

Note: The transformer unit should be connected to the
mains supply through a fused double pole isolating switch
maximum 5 amps.

Min 6 inches

Installation Instructions

If working above Ground Floor level, appropriate safety precautions must be observed.

WARNING

EYE PROTECTION MUST BE WORN DURING ALL DRILLING AND CHISELLING OPERATIONS

Safety First

The Heat Recovery Ventilator is a ”SELV” (Safety Extra Low Voltage) ventilator which operates at 12 volts AC. Under no
circumstances must this be connected directly to the mains supply. Damage so caused is not covered by the warranty.
The low voltage used by the ventilator must be provided by the isolating transformer. A typical layout of installation is
shown below.

The Heat Recovery Ventilator can be used in any room which has an outside wall open to fresh air. It is particularly
useful in the bathroom, kitchen or laundry room where high levels of moisture are generated. It can also be used in the
lounge, dining room or any bedroom to provide a fresh air supply to reduce dust-mite, eliminate mould growth or
dampness and condensation and to provide warmed fresh air.

April 2000

◆ These appliances are intended for connection to fixed wiring.

◆ Check that the electrical rating shown on the transformer matches the mains supply.

◆ All installation must be supervised by a qualified Electrician.

◆ Installation and wiring must conform to current IEE Regualtions(UK), local or appropriate regulations

(other countries)

◆ The product must be supplied by a double pole isolating switch with a minimum contact gap of 3mm.

◆ The product is double insulated and does not require earth connection. A parking terminal is provided to

ensure continuity of external protective wiring only, and when used must comply with the relevant regulations

WARNING

THESE APPLIANCES ARE DOUBLE INSULATED AND DO NOT REQUIRE AN EARTH CONNECTION

◆ If you have any queries before installing this product or after it has been installed, please contact GDA
Applied Energy, Customer Services - see back cover. Customers outside the UK should contact their
local Xpelair distributor.

Xpelair Heat Recovery Ventilation Range- XHR150PC and XHR150HP

◆ Xpelair Heat Recovery Unit have the following features: XHR150PC ◆ Integral Pull Cord

Heat Recovery Ventilator

VENTILATOR

2

LOW VOLTAGE OUTPUT MAINS INPUT

SLOW/FAST
FAN TRICKLE
SPEED FUSES

FACTORY
SEALED DO
NOT ADJUST

LIGHT LEVEL
SENSOR
ADJUSTER
(see page 8)

THUMB WHEEL
HUMIDITY LEVEL
ADJUSTER
(see page 1)

MAINS L E D PULL CORD L E D PULL CORD SWITCH

(Manual trickle boost control)

Isolating Transformer (Humidity sensor unit).

The humidistat monitors the humidity in the room and automatically switches the ventilator from continuous trickle
speed to boost if the humidity exceeds the set point e.g. when using the shower, cooking or doing the laundry.

The humidity level can be adjusted by turning the thumbwheel (as shown on page 2). We recommend that it is initially
set to number 6 on the scale, which is suitable for most locations. Turning the thumbwheel clockwise decreases the
sensitivity (fan in boost for shorter time) and anti-clockwise increases the sensitivity (fan in boost for longer time).

To prevent tampering with the setting after installation, the thumbwheel can be removed by carefully pulling gently
upwards. A blanking plate is supplied to seal the hole previously occupied by the thumbwheel.

If installed in a shower or bathroom the transformer/humidistat must be out of reach of anyone using a bath or shower.
We strongly recommend installation by a competent electrician.

Transformer/Humidity Sensor Unit

Sitting the Ventilator

Do not install where ambient temperatures are likely to exceed 40 oC (104 oF).

◆ This electrical product, if installed in a shower room or bathroom, must be situated so that they cannot be touched
by the person using the bath or shower.

◆ When intended for use in possible chemical corrosive atmospheres, first consult GDA Applied Energy for
technical advice

◆ If installing in a room containing a fuel burning device which has a non-balanced flue, it is the installers
responsibility to ensure that there is replacement air to prevent fumes being drawn down the flue when ventilator
is operating up to maximum extract. Refer to building regulations for specific requirements. Exhaust air must not
be discharged into a flue used for exhausting of fumes from appliances supplied with energy other that electric.
Requirements of all authorities concerned must be observed for exhaust air discharge and intake flow rates.

a) Survey the property carefully and identify the best site for the ventilator. Condensation problems, dampness and

mould growth are stimulated by high levels of humidity, the source of which can be the bath/shower room,
laundry room, kitchen or possibly a damp wall.

Identify an area in the room with an outside wall which is clear of obstruction, both inside and out - check for
water and soil pipes, wiring and other obstructions before finalising your installation position.

b) Indicate the position of the core drill hole on the inside wall. If possible, mark it’s position on the outside wall too.

See if they look right. Remember that the Heat Recovery Ventilator is unique in that it both extracts stale, damp air
and blows in warmed fresh air. Make sure that steam from your cooker/hob or appliance is not blown away
from the fan.

3

A MUCH BETTER

RESULT

AS IT CREATES

NATURAL CIRCULATION

THIS IS NOT A

GOOD SOLUTION!

MAX 1.5° or 8mm

PACK HERE

Installation

1. Check that the electrical rating shown on the inside of the product matches the main supply

2. Check there are no buried pipes or cables e.g. Electricity, gas, water behind the switch location
(in wall or above the ceiling)

3. Isolate the mains supply

c) You should site the ventilator close to the ceiling. This will ease the installation of the power cable and give you the

best position for air circulation.

Use the wall plate as a template, marking the Core drill hole position, fixing holes and power cable entry position
(which should be at the top left and side).

d) The ventilator is designed to be installed using a 6” (152mm) Core Drill system. The hole needs to be angled

downwards very slightly to a maximum of 1 1/

2

o

from the horizontal. This ensures that any condensation formed

in the Heat Exchanger runs to the outside where the discharge cowl will allow drainage outside your home.

Drill the hole making sure that masonary does not fall injure people or damage property below.

e) Measure the length of the hole between the outside brick face and inner plaster work.

Now cut the outer tube accurately to the required length. The length should be 4mm greater that the length of the
hole ’x‘ but no less that 254mm, otherwise the Heat Exchanger will not fit. Carefully mark the tube all round and
cut with a hacksaw and finish off with a file or good quality sand paper, to remove steps and swarf.

f) Place the tube in the hole and ensure that it slopes downwards towards the outside wall to allow any condensation

to run outwards. If you have not achieved this you may have to pack the inside end of the tube upwards on final
installation.

Outside installation of finisher ring

g) Place the split finisher around the hole in the outside brickwork with the split at the bottom. Use silicon mastic to

secure the finisher to the wall.

This is best done from the outside but if access is not possible then the split finisher is designed to pass through the
large tube.

4

‘x’

BRICK

OUTER

WALL

BLOCK
INNER

WALL

4mm

Measure the distance ‘x’

between outside wall and inside

plasterwork or tiles

Inside installation of the finisher ring

Proceed as follows:

i) Push the large tube through the hole so it extends some 50mm beyond the face of the outside wall.

ii) Apply silicon mastic around the rear face of the split finisher – do not compress the adhesive.

ENSURE EXTERIOR BRICKWORK IS DUST FREE

iii) Grip the finisher in your right hand, (palm uppermost) at the left hand end of the split with the adhesive side

facing you and the split at the top. Pull back the right hand end of the split along your right arm with your left
hand. Push the finisher right through the large tube and let it expand again. Don’t let go !

With your right hand, place the inner flange on the outside of the large tube. Move your fingers in an
anticlockwise direction until the finisher is pushed fully onto the tube (see below)

iv) Then, pull the tube and finisher back towards the room making sure that the split remains at the bottom. Carefully

pull the finisher into the gap between tube and brickwork. Press the adhesive gently against the wall, compressing
the adhesive. Then pull the tube into the room leaving the finisher in place. Ensure that the finisher does not fall.

v) Now manipulate the finisher to expand it outwards and increase it’s internal diameter as much as possible. This

will assist the re-entry of the tube. Compress the adhesive fully against the wall to hold it in position.

h) Fit the outside cowl to your prepared length of tube using PVC adhesive such as Bostik PVC Pipe Weld or

similar. Place the adhesive in an even layer around the inside diameter of the tube at the end that you did not cut.
Place the outside louvred vent on the end of the tube and allow the glue to set before handling it again. Wipe off
any excess adhesive on the outside of the cowl.

i) It is important for the correct operation that the smaller diameter tube is the correct length. This tube connects the

extraction fan housing to the outside cowl and separates the two air streams. The correct fitting of this tube is
critical to the efficient operation of the ventilator. To achieve this, whatever length has been cut off the outer tube,
the exact same length must be cut off the inner tube.

5

ADHESIVE

INNER FLANGE

6

Try to cut it as evenly as possible with minimum offset. File or otherwise finish your cut end to remove any offset
and swarf.

j) Mounted on the heat exchanger is a round plastic baffle which secures the air intake filters. The extraction fan

adjacent to these filters goes to the outside wall. Use the PVC weld adhesive to stick the small tube you have cut to
length onto the end flange of the extract fan and allow the adhesive to set. Protect the front cover at all times from
dirt and scratches.

k) Now fit the wall plate to the wall. The wall plate is marked top on the front face. If the sleeve on the rear wallplate

does not fit into the drilled hole, carefully open up the hole in the plasterwork until the wall plate will fit flush
against the wall and is central in the drilled hole. (Use the remnant piece of large diameter tube as a template to
ensure it is central). Mark out and drill the screw holes and chisel out a groove for the wiring from the cable entry
hole (top left) upwards to the ceiling (or in the direction you have determined for the transformer or remote
control). Fit screw plugs into the screw holes.

l) Fit the wall plate onto the open end of the large tube fitted with the outside cowl. Measure the distance from the

back edge of the wall plate to the other end of the tube. The tube should not extend beyond the outside wall
finisher.

Use the PVC weld adhesive to stick the wall plate to the outside tube. Ensure that the outside cowl is the right way
up (louvres pointing downwards to avoid rain ingress and the louvres are level to the wall plate). Push the outside
cowl/tube/wall plate assembly into the hole in the wall. Make sure that ’top‘ is correctly positioned and pull the
two core cable through the cable hole, check that there is a small downwards gradient in the tube
(see section f). Screw the wall plate to the wall ensuring that it is level with the ceiling. It is important to do this now
in order to accommodate the angle of the tube in the back of the wall plate before the glue sets.

FRONT COVER

INTAKE FAN

AIR IN

EXTRACT FAN

BAFFLE AND
INTAKE FILTERS

INNER TUBE

AIR OUT

OUTSIDE COWL

DON’T GLUE HERE

HEAT EXCHANGER

GLUE INNER TUBE TO BACK
OF THE FAN UNIT

GLUE WALL
PLATE TO TUBE

7

FAN

WALL

WALL

Transformer

Note: This part must not be mounted
in the interior of a bath tub or
shower basin and must be
positioned out of reach of a person
using a fixed bath or shower. It
should be also positioned away from
any source of water spray.

Location of the Transformer Unit

1. Check that the electrical rating shown on the inside of the product matches the main supply

2. Check there are no buried pipes or cables e.g. Electricity, gas, water behind the switch location
(in wall or above the ceiling)

3. Isolate the mains supply

The Transformer may be mounted on the wall or ceiling.

Position the transformer/humidity unit at least 6” (150mm) from a corner to allow correct airflow over the
humidity sensor. Also, ensure the humidity sensor unit is not directly in the stream of the fresh air coming in from
the fan unit, as this will result in false sensing.

An ideal location is on the same wall, or one immediately adjacent which is in the stream of the stale/damp air
being drawn into the side vents of the fan assembly.

Wiring
IF IN DOUBT CONSULT A QUALIFIED ELECTRICIAN

For fixed wiring circuits the protective fuse for the appliance must not exceed 3A.

◆ A double isolating switch with a minimum contact gap of 3mm (wall or ceiling mounted).

◆ If metal switch boxes are used, earthing regulations must be following.

◆ Suitably rated 2 core cable.

◆ 3 mm electricians screwdriver and No.1 or No 2 pozidrive screwdrivers.

◆ Masonry drill, hammer & chisel (or core drill equipment if available)

◆ Mortar to make good the hole if required

Decide how you are going to run the wires from the transformer to the fan unit. “All wiring must be in accordance
with IEE wiring regulations”.

A 5 amp two core power cable is required to connect the fan assembly to the remote control.

A two core, 3 amp supply is required on the input mains connection. An earth connection is not required.

Pass the input and output wires through the cable hole in the base plate of the remote control and fasten it in
position. (SEE DIAGRAM ON PAGE 2)

To comply with electrical safety regulations both input and output leads must be clamped to the unit using the
saddle clamps provided.

m) Mains wiring for remote control and transformer:

Red or Brown wire to live terminal
Black or Blue wire to neutral terminal

Do not apply power to the transformer yet.

No earth is required to the ventilator in accordance with IEE wiring regulations for SELV circuits.

All wiring must be 1mm minimum, fixing securely to comply with IEE wiring regulations, if in doubt consult a
qualified electrician.

n) Follow the line diagram below to make the correct connections between the fan assembly and the

transformer/humidity sensor, and wall plate.

o) Place the fan assembly and front cover through the wall plate and push home. Apply power to the system and

check operation. Conduct a smoke test to ensure the extract fan is running. Check that the front filters are in place
and screw the front cover to the wall plate with the screws provided.

NOTE: If the fan unit has automatically switched to boost due to high humidity in the room, the pull cord switch
will have no effect until the humidity drops below the present level:

IMPORTANT: The pull cord manually switches the fan unit from trickle to boost. This is confirmed by the LED
warning light shown on page 1 being extinguished.

p) After the system has run for some time, check the fan unit switches to boost by directing steam from a kettle over

the remote control unit.

q) The fan’s continuous trickle speed has been factory set. However, if it is found that the fan is audible at this

setting, it is possible to reduce the trickle speed still further. Remove the lid of the control box, and move the fuse
link from fast trickle to slow trickle position (see diagram below). Always replace the fuse with one of the correct
type and rating.

Transformer/Humidity Sensor Unit Wiring

The fused spur and Remote Control Unit must be
mounted out of reach of anyone using a bath
or a shower.

TRANSFORMER UNIT

FAN ASSEMBLY
WALL PLATE

L N

DOUBLE POLE SWITCHED

AND FUSED SPUR

WITH MINIMUM 3mm

SEPARATION ON BOTH POLES

240V 3 AMPS

240v AC

N

L

TWO
FUSE
POSITIONS

TRANSFORMER

MAINS INPUT

LOW VOLTAGE OUTPUT

SLOW TRICKLE

FAST TRICKLE

1
2

8

DO NOT
CONNECT

1 2 3

9

Light Level Sensor

A Light Level Sensor is included to prevent the fan from switching automatically to boost at night-time. This is a useful
feature particularly if the Heat Recovery Ventilator is installed in a bedroom or bed-sit accommodation, ensuring noise
is kept to a minimum.

The sensor is factory set in the OFF position as this is preferred for most installations. This means that the automatic
boost feature will operate if the humidity rises during the hours of darkness. To activate the Light Sensing feature, (boost
inhibited during darkness) turn the adjuster fully anti-clockwise, shown on page 2.

This should be an approximate setting for most installations depending on the location of the remote
transformer/humidity assembly in the room.

Fine tuning may be required for precise operation:-

Clockwise allows boost to operate during darkness
Anti-clockwise prevents boost operating during darkness

A simple test for the correct setting is to trigger the boost feature via the humidity sensor in a darkened room. When
switching the light on or off, the boost speed should cut in and out accordingly.

Cleaning

1. Before cleaning isolate the Sensor completely from the mains electrical supply.

2. Wipe the cover carefully with a damp cloth.

3. Dry throughly with a soft cloth
Do not immerse Sensor in water or other liquids.

If required, a cleaning service is available from

GDA Applied Energy Limited Customer Service Department (UK only)

◆ Never use strong solvents to clean the Sensor.

◆ A part from cleaning, no other maintenance is required.

10

Do’s and Don’ts

• Do read the entire instruction leaflet before commencing installation.

• Do install the transformer with a double pole isolating switch.

• Do make sure that the mains supply is switched off before attempting to make electrical connections or
carry out any maintenance or cleaning.

Guarantee.

Customers outside UK – see International below.

• UK. The Ventilator is guaranteed against defects for 3 years from the date of purchase.

• Please keep your purchase receipt.

• If you have any problems, contact Xpelair’s Head Office at the address shown below.

Technical advice and service.

Customers outside UK – see International below.

• UK: Xpelair have a comprehensive range of services including:

• Free technical advice from Engineers on all aspects of ventilation.

• Free design service, quotations and site surveys.

• Service and maintenance contracts to suit all requirements.

Please ask for details:

• By telephone on Techline:
[phone]

• By Fax on Techfax:
[phone]

• At the address below.

Head Office, UK sales office and spares.

GDA Applied Energy Ltd, Morley Way, Peterborough, PE2 9JJ, England

Telephone: [phone]
Fax: [phone]
Sales Hotline: [phone]

http:\\www.xpelair.co.uk

International

• Guarantee: Contact your local distributor or Xpelair direct for details.

• Technical Advice & Service: Contact your local Xpelair distributor.