15
F205P
For the Installer
A duct in a masonry chimney stack must
not be used for extract air.
Note!
Ventilation connection
Duct installation
To prevent fan noise being transferred to the exhaust air
devices, it may be a good idea to install a silencer in the
duct. This is especially important if there are exhaust air
devices in bedrooms. Because the heat pump contains a
flammable refrigerant in the form of propane (R290), the
air ducting system must be earthed. This is done by making
a sound electrical connection to the exhaust air duct and
extract air duct using the two earthing cables supplied. The
cables must then be connected to the earthing studs on
top of the top cover.
Duct connections should be made via flexible hoses, which
must be installed so that they are easy to replace. The
extract air duct is to be insulated using diffusion-proof
material along its entire length. Provision must be made
for inspection of the duct. The exhaust air duct should be
fitted with an adjustment damper. Make sure that there are
no reductions of cross-sectional area in the form of creases,
tight bends etc, since this will reduce the ventilation capac-
ity. All joins in the ducting must be sealed and pop-riveted
to prevent leakage.
The air duct system should, at a minimum, be of air tight-
ness class B.
Ventilation connection
Fan diagram
The diagram below shows the available ventilation capac-
ity.
0
50
100
150
200
250
300
350
400
450
050 100 150 200 250 300 350 450400
0
50
100
150
200
E
D
F
G
H
I
I
J
J
Airflow, m
3
/h
Available static pressure, Pa
Output, W
Ventilation flow
Ventilation system should be installed and commissioned
in accordance with the UK Building Regulations Part F
England and Wales and Chapter 3.4, Scotland.
F205P is connected so that all ventilation air except the
kitchen fan passes the evaporator (62) in the heat pump.
For optimum heat pump performance the ventilation flow
must not be less than 100 m
³
/h (28 l/s) when the com-
pressor is in operation. F205P is equipped with a ventila-
tion opening in the base. As a result, an air flow of about
5 m
3
/h.
(1,4 l/s) is taken directly from the room where the heat
pump is installed. Changing the ventilation capacity is
described under “Electrical connection - Setting the fan
capacity”. The curve’s designation refers to the position of
the knobs R51 and R52 on the circuit board (34).
Connect the supplied clock thermostat to select between
normal or high ventilation.
Kitchen duct
Duct from Cooker Hoods must not be connected to the
F205P.
Adjustment
To obtain the necessary air exchange in every room of the
house, the exhaust air devices must be correctly positioned
and adjusted. An incorrect ventilation installation may lead
to reduced heat pump efficiency and thus poorer operat-
ing economy, and may result in damage to the house.
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