Kair KWH150-ECO-LC Maintenance and service guide

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KWH150-ECO-LC/20210130Kair Ventilation Ltd | 9-11 High Street | Sidcup | DA14 6EN | www.Kair.co.uk
KWH150-ECO-LC
Kalahari Eco Positive Input Ventilator (Loft Controlled)
Installation & Maintenance
For
Environment
Your
1.0 SAFETY INFORMATION
• The provision of the electrical supply and the connection of the unit to the electrical supply
must be carried out by a qualified electrician in accordance with latest edition of the wiring
regulations.
• Isolate from power supply before removing any covers. During installation / maintenance ensure
all covers are fitted before switching on the mains supply.
• All-pole disconnection from the mains as shown in the wiring diagram must be incorporated
within the fixed wiring and shall have a minimum contact separation of 3mm in accordance with
latest edition of the wiring regulations.
• Ducting must be securely fixed to the spigot to prevent access to live parts. Duct runs
terminating close to the fan must be adequately protected by suitable guards.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualified persons in order to avoid a hazard. The replacement cord must be of the same
technical specification as the original cord or greater.
• Precautions must be taken to avoid the back-flow of gases into the room from the open flue of
gas or other fuel-burning appliances.
• This appliance should not be used by children or persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge, unless they have been given supervision
or instruction concerning the safe use of the appliance by a person responsible for their safety.
Children shall not play with the appliance. Cleaning and user maintenance shall not be carried
out by children.
1.1 Hazard Symbols
REFER TO INSTRUCTION MANUAL
Read and understand the installation and maintenance manual before installing,
operating or maintaining this product.
1.2 Important Information
This manual contains important information on the safe and
appropriate assembly, transport, commissioning, operation,
maintenance, disassembly and simple troubleshooting of the product.
While the product has been manufactured according to the accepted
rules of current technology, there is still a danger of personal injury or
damage to equipment if the following general safety instructions and
the warnings contained in these instructions are not complied with.
•Read these instructions completely and thoroughly before
working with the product.
•Keep these instructions in a location where they are accessible
to all users at all times.
•Always include the operating instructions when you pass the
product on to third parties.
1.3 Personal Protective Equipment
The following minimum Personal Protective Equipment (PPE) is
recommended when interacting with Kair product:
•Protective Steel Toed Shoes - when handling heavy objects.
•Full Finger Gloves (Marigold PU800 or equivalent) - when
handling sheet metal components.
•Semi Fingerless Gloves (Marigold PU3000 3DO or equivalent)
- when conducting light work on the unit requiring tactile
dexterity.
•Safety Glasses - when conducting any cleaning/cutting operation
or exchanging filters.
•Reusable Half Mask Respirators - when replacing filters which
have been in contact with normal room or environmental air.
Kair would always recommend a site specific risk assessment by a
competent person to determine if any additional PPE is required.

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KWH150-ECO-LC/20210130Kair Ventilation Ltd | 9-11 High Street | Sidcup | DA14 6EN | www.Kair.co.uk
KWH150-ECO-LCInstallation Manual
2.0 INTRODUCTION
The KWH150-ECO-LC provides whole home ventilation using the
Positive Input Ventilation principle. The concept is to introduce
fresh, filtered air into the dwelling at a continuous rate, encouraging
movement of air from inside to outside.
To achieve this the unit is mounted in the loft space, drawing air
through the filters and inputting it, at ceiling level, into the property.
The KWH150-ECO-LC fan unit includes an internal sensor to regulate
the fan speed according to the temperature of the loft. The internal
sensor is to increase airflow to the dwelling when the loft is warmer
than the house. The units ‘Fixed Temperature Heat Recovery’ strategy
shall be achieved via a sensor located in the unit and shall improve
energy performance accordingly.
Once installed, the airflow can be set to suit the house size and, if
required, the way it responds to the temperature changes within.
3.0 MECHANICAL INSTALLATION
Whilst the installation of the KWH150-ECO-LC unit may be achieved
by suitable persons, the provision of the electrical supply and the
connection of the unit to the mains must be carried out by a qualified
electrician.
Successful operation of the fan depends entirely upon the unit being
installed strictly in accordance with these instructions.
Please read through this guide in its entirety before commencing
installation and follow step by step to ensure a satisfactory completion.
Warning: Isolate from power supply before removing any covers.
During installation/maintenance ensure all covers are fitted before
switching on the mains supply.
This appliance can be used by children aged from 8 years and above
and persons with reduced physical, sensory or mental capabilities or
lack of experience and knowledge if they have been given supervision
or instruction concerning use of the appliance in a safe way and
understand the hazards involved. Children shall not play with the
appliance. Cleaning and user maintenance shall not be made by
children without supervision.
Precautions must be taken to avoid the back-flow of gases into the
room from the open flue of gas or other fuel-burning appliances.
Means for disconnection must be incorporated in the fixed wiring as
shown in the wiring diagram in accordance with IEE wiring or national
wiring rules.
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 device.
3.1 Loft Inspection
Check to ensure that the loft has adequate ventilation. There may be
occasions where a loft is so well sealed that additional ventilation may
have to be provided by the owner/occupier.
Ensure that all water tanks are covered and sealed.
Check that all water pipes are lagged.
Ensure that any extract fans are discharging to outside and not into the
loft.
Check that the loft hatch is tightly sealed.
Ensure that all holes in the ceilings are sealed i.e. ceiling light fittings
etc.
Installer to visually inspect any flues or chimneys for leakage in the
loft. If any leakage points are found, or if there is any doubt at all,
then the installer should advise the house owner/provider as soon as
possible and seek instruction from them before proceeding with the
installation.
3.2 Diffuser Installation
3.2.1 Choosing Diffuser Location
The diffuser has a unique air throw pattern and it is essential that it is
located correctly in the central hallway in single storey properties or in
the ceiling of the top floor landing on 2 or more storey dwellings.
The diffuser discharges air evenly in all directions along the underside of
the ceiling.
Speed Setting Minimum Diffuser Distance From Wall
1 100 mm
2 155 mm
3 400 mm
4 625 mm
5 850 mm
6 1000 mm
SMOKE ALARMS -It is also important to ensure that the diffuser is
NOT placed within 1 metre of a smoke alarm.
If the diffuser cannot be repositioned, two sides of the diffuser must
be closed off using the air dams supplied to encourage the air through
the remaining open sides that faces at least 1.5 metres of unobstructed
area away from the smoke alarm sensor.
3.2.2 Air Dam(s) Installation (If Required)
Air dams should be fitted as needed, to alter the direction of airflow
required. 2 air dams are supplied and will fit on any of the diffuser sides
to guide airflow away from a smoke detector and/or obstructions as
required.
Ceiling Vent
Two Air Dams (supplied) can t on any of the diuser sides to guide
airow away from a smoke detector and/or obstructions as required.
Diuser Cap
Airow
Airow
1 Ceiling Diffuser With Air Dams
3.2.3 Ceiling Diffuser Installation
To install the diffuser, use the tear-out template from the lid of the unit
packaging and trace the shape onto the ceiling between two convenient
joists. Once the shape has been cut out, position the ceiling vent by
aligning the label on the ceiling vent with the narrowest point of the
ellipse and secure it in place using the 4 screws and plugs provided.
Finally attach the diffuser cap to the frame using the four built-in press
on clips provided.
3.3 Filter Installation
The filter has a push fit rim to attach itself to the main body of the unit.
Offer the filters up to the unit and apply a small amount of pressure to
the filters rim (by hand). The filter will clip into place.
The unit can then be attached to the roof via the cord provided (or fixed
to the floor joists using the optional anti vibration mounting kit).

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KWH150-ECO-LCInstallation Manual
5 AV Mount Installation
4.0 ELECTRICAL INSTALLATION
4.1 Electrical Information
The electrical connection of the unit must be carried out by a qualified
electrician.
The unit is supplied with a pre-wired power supply. This power supply
unit has a metal bracket incorporating fixing holes, which should be
used to fit the power supply to a suitable surface e.g. a wooden joist.
The fan unit is also supplied with a fused spur. The two core mains
cable from the power supply should be connected to a fixed wiring
installation, via the spur, in accordance with current IEE wiring
regulations.
Disconnection from mains must be incorporated within the fixed wiring
and shall have a maximum contact separation of 3mm in accordance
with latest edition of the wiring regulations.
For good EMC engineering practice, the KWH150-ECO-LC power
supply output cable and any sensor cables should not be placed
within 50mm of other cables or each other.
4.1.1 Electrical Detail
Voltage: 230V 1ph 50Hz
Consumption: 1.6W(min) 15.3W(max)
Fuse Size: 1 Amp
4.2 Wiring Diagram
L
N
Power
Supply
Fan
Unit
2 Pole
Isolator
(By Others)
24V
DC
Fused Spur
(Supplied)
1 amp
Mains
230V
50Hz
230V
AC
6 KWH150-ECO-LC Wiring
2 Filter Installation
3.4 Fan Unit Installation
3.4.1 Joist Hung (Standard Mounting)
The standard method of installation is to suspend from a convenient
roof beam via the cord supplied (unit weight = 3.5 kg). The method of
locating the cord to the roof timber is the responsibility of the installer.
The flexible duct (maximum length 2m) is connected to the fan unit
by inserting the duct over the fan outlet and held in place using the
supplied cable tie. This method is repeated when connecting the duct to
the ceiling vent. Ensure all duct joints are airtight.
The flexible ducting should NOT be installed in a compressive
state, as this will negatively impact on the performance of the unit.
3 Joist Hung Fan Unit
3.4.2 AV Mounting (Alternative Mounting)
The AV kit contains all the parts necessary to complete a joist mounted
installation. If AV mounting is required the kit can be purchased direct
from Kair using the following code number: 771393.
Lower the unit with battens (battens not supplied by Kair) attached
onto the joists. Mark and drill the 12mm Ø clearance holes required in
the ends of the battens.
Place anti-vibration mounts above and below each batten fixing point
and, using the 4 large screws and special washers, fix the unit to the
joists.
Do not overtighten the fixings. The distance from the top washer to
the joist when installed must not be less than 50mm.
4 AV Mounted Fan Unit

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KWH150-ECO-LC/20210130Kair Ventilation Ltd | 9-11 High Street | Sidcup | DA14 6EN | www.Kair.co.uk
KWH150-ECO-LCInstallation Manual
5.0 SMOKE / CARBON MONOXIDE ALARM
AUTOMATIC SHUT DOWN
If the unit is required to switch off in the event of smoke/CO detection,
alarms are available with separate relay bases from companies such as:
Kidde – www.kiddesafetyeurope.co.uk
Aico Ltd – www.aico.co.uk
This is a mandatory requirement for all units installed in a 3 Storey
property.
In the event of conducted RF interference between 80 to 127 MHz
or transient radiated interference between 80 to 87 MHz, the LED
display may go blank and fan stop temporarily, then go into reset
mode (LED flashing with the number of the speed setting) and run
at high speed. The unit will return to normal after 2 minutes after
the RF interference has stopped.
POWER
SUPPLY
FAN
UNIT
Mains power Smoke/CO detector
with NO/NC contacts
NO NC
N
L
N
L
C
230V
Supply
230V 24V
For information only,
refer to manufacturer’s
specific instructions.
7 Alarm Wiring
6.0 CONTROLS
6.1 Speed Settings
The unit has 6 air flow rate (speed) settings, 1-6. Switches to control
the speed settings and the display are located on the rear of the fan
unit. The following table shows the flow rates and their corresponding
speed settings.
As an example a one bedroom bungalow should be set to speed 1, and
a large 5 bedroom detached property would require speed 6.
Speed Setting Airflow Rate (l/s)
0 Standby (0)
1 10
2 20
3 30
4 40
5 50
6 60
6.2 Speed Selection
When power to the unit is switched on the display will show the
temperature control option for 2 minutes. Once the start-up pattern
has completed you may now press the “up” or “down” switch to choose
the flow rate appropriate to the property you are installing the unit in.
8 KWH150-ECO-LC Control
UP DOWN
6.3 Temperature Control Selection
When delivered, the unit is set to temperature setting 1 as a default.
To change this setting, switch the power to the unit on. The display on
the rear of the fan unit will show the temperature control option for
2 minutes and the unit will being running at speed 6. In this time you
can change the temperature setting by pressing and holding the “up”
button. The display will show a flashing value of 1 and will increase
every 4 seconds. Once you have reached the temperature setting you
require press and release the “down” button to store the setting. The
fan will now enter into its normal speed setting mode and a speed can
be selected at this point.
Temperature
Control
Setting
Temperature Control Description
1
(Default)
At loft temperatures below 19°C the unit will operate on
“Normal Operation Mode”.
At loft temperatures above 18°C but less than 24°C, the
unit will switch automatically to “Intelligent Heat
Recovery Mode”.
At loft temperatures above 23°C the unit will switch itself
automatically to “Standby Mode”.
2At loft temperatures below 19°C the unit will operate on
“Normal Operation Mode”.
At loft temperatures above 18°C but less than 31°C, the
unit will switch automatically to “Intelligent Heat
Recovery Mode”.
At loft temperatures above 30°C the unit will switch itself
automatically to “Standby Mode”.
3This option removes the temperature sensing function out
of the unit.
The unit will operate continuously in “Normal Operation
Mode” depending on the volume control setting selected.
4At loft temperatures below 16°C the unit will operate on
“Normal Operation Mode”.
At loft temperatures above 15°C but less than 28°C, the
unit will switch automatically to “Intelligent Heat
Recovery Mode”.
At loft temperatures above 27°C the unit will switch itself
automatically to “Standby Mode”.
5At loft temperatures below 19°C the unit will operate on
“Normal Operation Mode”.
At loft temperatures above 27°C or below 5°C the unit will
switch itself automatically to “Standby Mode”.
Notes: Speed Setting 1 is not available for Temperature
Control Option 5. On selecting Temperature Control Option
5, Speed Setting 1, the unit will operate as Speed Setting 2.

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KWH150-ECO-LC/20210130Kair Ventilation Ltd | 9-11 High Street | Sidcup | DA14 6EN | www.Kair.co.uk
KWH150-ECO-LCInstallation Manual
7.0 MAINTENANCE
It is important that maintenance checks are recorded and that the
schedule is always adhered to, in all cases, the previous report should
be referred to.
7.1 Filter Replacement
The filters are required to be changed every five years, failure to do so
may impair the performance and energy efficiency of this unit. The
display will show the letter ‘C’ once this time has elapsed.
New filters can be purchased direct from Kair using the following code
number: KWH150-ECO-FLT (five year filter). To reset the change filter
message, press and hold BOTH “up and “down” button for between 10-
20 seconds, then release, the letter ‘C’ starts to flash, press the “down”
button.
If the units’ performance has been reduced dramatically or black
dust becomes visible around the outlet diffuser, check that the
filter has not become dislodged in any way.
8.0 FREQUENTLY ASKED QUESTIONS
While very rare, issues with newly installed units can occur. Typically
these issues can be easily solved by referring to the below table.
Symptom Cause Solution
Fan not
running.
NO power to the unit
(Display is NOT lit).
Ensure unit has not been
switched off or that the
local fuse has not blown.
Software error - Power to the
unit (Display is lit).
If electricity present, power
off, wait and power on
again – this may restart
the unit.
Fan failure - Power to the unit
(‘F’ is flashing on display).
Fan has failed and a
replacement unit is
required.
High loft temperature
("0" on display).
This is normal, see
temperature control
options.
9.0 WARRANTY
The Kair 5 year warranty against faulty material or workmanship starts
from the day of delivery and is limited to replacement parts only.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused, disassembled, or not
installed, commissioned and maintained in accordance with the details
contained in this manual and general good practice.
The product warranty applies to the UK mainland only and in
accordance with our Conditions of Sale.
Where a floor/room is more than 4.5m tall, the fan unit must be
fitted with a 3 storey aluminium diffuser and requirements in
section 5.0 followed.
Failure to maintain the unit as recommended will invalidate the
warranty.
10.0 END-OF-LIFE AND RECYCLING
Where possible Kair use components which can be largely recycled
when the product reaches its end-of-life:
•Fans, motors, controls, actuators, cabling and other electrical
components can be segregated into WEEE recycling streams.
•Sheet metal parts, aluminium extrusion, heating/cooling coils and
other metallic items can be segregated and fully recycled.
•EPP, plastic ducting, nylon corner pieces, plastic heat exchangers,
packaging material and other plastic components can be
segregated into mixed plastic and widely recycled.
•Cardboard packaging, wood, used filters and other paper
components can be largely recycled or fully processed in energy
from waste centres.
•Remaining Items can be further segregated and processed in
accordance with the zero waste hierarchy. Please call After Sales
Support for further information on items not listed above.
Ensure that Kair product is made safe from any electrical / water
/ refrigerant supplies before dismantling commences. This work
should only be undertaken by a qualified person in accordance with
local authority regulations and guidelines, taking into account all
site based risks.
11.0 AFTER SALES AND REPLACEMENT PARTS
For technical assistance or further product information, including spare
parts and replacement components, please contact the After Sales
Department.
If ordering spares please quote the serial number of the unit together
with the part number, if the part number is not known please give a full
description of the part required. The serial number will be found on the
identification plate attached to the unit casing.
Telephone [phone]
[e-mail]
Technical or commercial considerations may, from time to time,
make it necessary to alter the design, performance and dimensions
of equipment and the right is reserved to make such changes without
prior notice.

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KWH150-ECO-LC/20210130Kair Ventilation Ltd | 9-11 High Street | Sidcup | DA14 6EN | www.Kair.co.uk
KWH150-ECO-LCInstallation Manual
NOTES

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KWH150-ECO-LC/20210130Kair Ventilation Ltd | 9-11 High Street | Sidcup | DA14 6EN | www.Kair.co.uk
KWH150-ECO-LCInstallation Manual
NOTES

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KWH150-ECO-LC/20210130Kair Ventilation Ltd | 9-11 High Street | Sidcup | DA14 6EN | www.Kair.co.uk
KWH150-ECO-LCInstallation Manual
NOTES