Vent-Axia 14120020 User manual

HR200WK
Through the wall
Heat Recovery Ventilator
Installation and Maintenance Instructions
PLEASE READ INSTRUCTIONS IN CONJUNCTION WITH
ILLUSTRATIONS. PLEASE SAVE THESE INSTRUCTIONS
Stock Ref No:
-
HR200WK 14120020

IMPORTANT SAFETY
INFORMATION
PLEASE READ THESE
INSTRUCTIONS
CAREFULLY BEFORE
COMMENCING
INSTALLATION.
1. Do not install this product in
areas where the following may be
present or occur:
• Excessive oil or a grease laden
atmosphere.
• Corrosive or flammable gases,
liquids or vapours.
• Subject to direct water spray
from hoses.
• Ambient temperatures higher
than 40°C and lower than -20°C.
• Possible obstructions that may
hinder access to or removal of the
unit.
2. All wiring must be in accordance
with the current IEE wiring
regulations BS7671, or appropriate
standards of your country.
Installation should be inspected
and tested by a suitably qualified
person after completion.
3. Ensure the mains supply
(voltage, frequency and phase)
complies with the rating label.
4. The unit should be provided with
a local isolator switch fitted with a
3A fuse capable of disconnecting
all poles and having a contact
separation of at least 3mm.
5. These units must be earthed.
6. Precautions must be taken to
avoid the back-flow of gases into
the building from the open flue of
gas or other fuel-burning
appliances.
7. This appliance is not intended
for use by persons (including
children) 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.
8. Young children should be
supervised to ensure that they do
not play with the appliance.
9. CAUTION: In order to avoid a
hazard due to inadvertent resetting
of the thermal cut-out, this
appliance must not be supplied
through an external switching
device, such as a timer, or
connected to a circuit that is
regularly switched on and off by
the utility.

Warnings & Safety Information
INSTALLATION GUIDANCE
1. The installer is responsible for the installation
and electrical connection of the system on site. It
is the responsibility of the installer to ensure that
the equipment is safely and securely installed
and left only when mechanically and electrically
safe.
2. All regulations and requirements must be
strictly followed to prevent hazards to life and
property, both during and after installation, and
during any subsequent servicing and
maintenance.
3. Certain applications may require the
installation of sound attenuation to achieve the
sound levels required.
4. The unit must not be connected directly to a
tumble drier.
5. The supply air must be drawn from the exterior
of the property.
6. The exhaust grille should be located at least
600mm away from any flue outlet. The inlet grille
should be located 2000mm away from any flue
outlet.
Contents
Section Page
1.0 Introduction 4
2.0 Site Requirements 5
3.0 Installation 6
4.0 Electrical 8
5.0 Maintenance 10
Disposal
This product should not be
disposed of with household waste.
Please recycle where facilities
exist. Check with your local
authority for recycling advice

1.
0
Int
r
oduction
1.1 Description (Fig. 1)
1. The HR200WK unit is a through the wall heat
recovery ventilator for use in kitchens and utility
rooms. It is designed for installation in external
walls having a thickness up to 335mm.
2. The unit’s twin impeller and heat exchanger
arrangement simultaneously supplies and
extracts air while transferring heat from the stale
exhaust airflow to the fresh intake airflow. This
provides up to 75% heat recovery from the stale
extracted air.
3. The power consumption for the unit is 20W
trickle speed, 60W normal speed and 130W
boost speed.
4. The three selectable speeds provide
ventilation rates of 60m3/h trickle, 110m3/h
normal and 220m3/h boost.
1.2 Ancillary Equipment
1. The HR200WK unit can be used in conjunction
with a range of ancillary equipment.
Controller: A range of controllers - see section
3.1 Controllers.
Humidity sensors:
Vent-Axia Ambient Response Humidistat (563550)
Ecotronic Humidistat (563532)
Vent-Axia Humidiswitch (563501)
Normal Boost Purge switch (5108454)
4
Fig. 1

2.0 Site Requirement
2.1 Information
1. The unit must be sited and connected by a
suitably competent person and be in accordance
with current UK Building Regulations and I.E.E.
Wiring Regulations (BS 7671).
2. The unit is intended for permanent connection
to the mains electrical supply.
3. Wiring to the unit in the UK must be via a
switched fused spur. The switched fused spur
must have a 3mm minimum contact gap in all
poles.
Fig. 2
4. Ensure that the mains electrical supply is
compatible with the rating label attached to the
product. Warning: this appliance is class 1 and
it must therefore be earthed.
5. The unit must be sited such that the ambient
temperature will not exceed 40°C.
6. Do not site the appliance in the vicinity of
excessive levels of airborne oil or grease.
7. If the unit is installed in a room containing a
fuel burning appliance, the installer must ensure
that air replacement is adequate for both
appliances.
8. The unit must not be installed at a level below
500mm from the floor.
9. The internal grille surround must be sited at
least 125mm away from any wall or projecting
surface.
10. The external grille of the unit must be sited at
least 600mm away from any flue of gas or solid
fuel appliances. This is to avoid back flow of
gases entering the room.
11. All safety regulations and requirements must
be strictly followed to prevent hazards to life and
property both during and after installation and
during subsequent maintenance or servicing.
12. Ensure the mains electrical supply is switched
off before commencing installation or
maintenance.
5

3.
0
Installation
6
CG-1-1/01
3.1 Controllers
1. The HR200WK unit can be installed in
conjunction with a number of controllers.
150VA (563538): The 150VA transformer,
when used with a trickle/boost switch (455213),
allows for a trickle and boost speed to be
selected. Only terminals providing 140V or
higher should be used as the unit will not
operate reliably bellow 140V.
Ecotronic 1.5A controller (W300310):
Provides variable speed control and on off and
auto (sensor) modes.
Normal Boost Purge Switch (5108454):
The single gang switch enables the unit to be
manually switched from permanent trickle
ventilation Normal (Low speed) to either Boost
(Medium speed) or Purge (High speed).
3.2 Initial Preparation
1. Select an approved electrical control
arrangement for the HR200WK unit
(above).
2. After considering the site requirements
(Section 2.0), select a suitable site for the unit
and controllers and work out the cable runs.
WARNING: Before deciding on the final position
for the unit, check there are no buried cables,
pipes or obstructions on the outside wall.
Cable requirements: Suitably (Basec or Har)
approved four core cable of appropriate current
carrying capacity.
3. Install the cable runs and appropriate
controllers in conjunction with a fused connection
unit. Contact gap must not be less than 3mm.
4. Working from the inside, mark out the
position of the mounting hole - 250mm wide x
250mm high.
5. Carefully cut the holes in the inner and outer
brick courses to form a suitable aperture to
receive the unit. Ensure that this is level.
NOTE: Bricks will cut more easily and
accurately if a series of holes are drilled close
together along the marked lines.
Fig. 3

7
3.0 Installation
3.3 Installing the Appliance
From Inside
1. Remove the grille, heat exchanger, from the
unit. Note: it is not necessary to remove the
fan assembly from the housing to carry out the
installation.
2. Slide the unit into the mounting hole and
ensure that the flange around its open end is not
held off the mounting surface by the threaded
bushes located in the flange. Remove the
housing assembly and if necessary clear the wall
to suit these bushes and the screws which will
project through them.
3. Offer the housing to the mounting hole. As the
housing is being located in the mounting hole,
feed the electrical supply cable through the entry
hole (located on the top right hand side of the
housing). Note: for the purpose of condensation
drainage a prop is fitted to the underside of the
housing to cause it to adopt a downwards tilt to
the outside wall.
4. Fix the housing assembly in the wall using suitable gap
filler between it and the mounting hole. The housing can
also be fixed to the wall through the holes in the side
using suitable wood screws and wall plugs. Make good
around the internal and external wall faces.
CAUTION: Ensure the case does not distort
during fixing and making good.
From Outside
1. Offer the frame to the housing and mark its
fixing hole positions on the external wall face.
Remove the frame and drill the wall to accept
suitable wall fixing plugs.
2. Slide the frame over the housing and seal it
against the external wall face using silicone
sealant or mastic. Fix it in position with suitable
screws.
Fig. 4

4.
0
Electrical
8
=
L2
4.1 Electrical Connections
230V 50Hz 130W max
1. Wiring must be via a 3A fused switched spur
with a 3mm contact separation in each pole. The
wiring should be suitably (Basec or Har)
approved cable of appropriate current carrying
capacity.
2. Ensure that the mains power supply is
isolated prior to installation.
3. Remove the terminal cover after unscrewing
the retaining screw.
4. Remove the appropriate amount of sheath and
insulation from the supply cable and leads.
Connect the conductors of the cable to the
appropriate terminals in accordance with the
appropriate wiring diagram (Fig. 5, 6, 7, 8, 9).
NOTE: Refer to the fitting and wiring
instructions provided with the controller used.
The wiring diagrams shown here are not a
complete list of possible combinations.
5. Position the cable in the clamp such that the
sheath is held and tighten the cable clamp nuts
to secure the cable in position.
6. Replace the terminal enclosure cover and tighten
retaining screw. Replace the heat exchanger.
7. Replace the grille surround complete with the
removable grilles and tighten the retaining screws.
8. Switch on the mains electrical supply and
check the operation of the unit.
Fig. 5
Fig. 6
Fig. 7

4.
0
Electrical
Fig. 9
Fig. 8

10
5.
0
Maintenance
5.1 Cleaning the Unit (Fig.9)
1. In addition to removing odours, providing fresh
air and recovering heat, this unit extracts airborne
impurities such as dust, dirt and grease. These
gradually build up and detract from the efficiency
and appearance of the unit.
2. To ensure optimum performance, the unit
should be cleaned every 3 to 6 months or at
periods determined by the level of contamination
experienced and according to the following
procedure.
3. Isolate the mains power supply.
4. Release the catches on either side of
the grille surround and remove the two
filter holders.
5. Remove the filter from the filter holders.
6. Remove the grille surround after unscrewing its
retaining screws. Slide out the heat exchanger.
7. Wash the grille, filter and heat exchanger in
warm water using a mild detergent and dry
thoroughly.
CAUTION: Keep water away from all electrical
components and wiring within the unit.
8. Reassemble in reverse order ensuring the
filter and heat exchanger are seated correctly.
9. Switch power supply on and check the
operation of the unit.
5.2 Inlet Blank
1. An inlet blanking plate is provided with
the unit. With this in place the HR200WK
acts as an extract only fan.
2. Release the catch for the supply
side(left side) grille and remove the grille
3. Place the inlet blanking plate between
the grille and the filter
4. Replace the grilled with the blanking
plate in place. The unit will now operate as
an extract only ventilation unit
Fig.
9
Inlet blanking plate