08
AFTER INSTALLING THIS UNIT,
PLEASE PASS ONTO END USER DO NOT THROW AWAY
The appliance is supplied ready to wire into
the fuse spur and operates fully automatically.
The extracted indoor air heats up the fresh,
clean outdoor air. That saves energy and fresh
air is sent to the required rooms.
The control system has four ventilation
modes. The air flow rate can be adjusted per
ventilation mode. The constant volume control
system ensures that the air flow rate of the
supply and extract fans is always delivered
despite any resistance encountered in the
ductwork.
The standard bypass valve makes it possible
to supply fresh outside air that is not heated
by the heat exchanger. Particularly during
summer nights it is desirable to supply cooler
outside air. In this mode the hot air in the
dwelling is replaced by cooler outside air as
far as possible.
The bypass valve opens and closes
automatically when a number of conditions
are satisfied (refer to the table below for
bypass conditions).
The operation of the bypass valve can be
adjusted in step number 5, step number 6
and step number 7 in the settings menu (see
pages 39-41).
To prevent freezing of the heat exchanger
at extremely low outdoor temperatures, the
Slimline 150 features an intelligent frost
control. Temperature sensors measure the
temperatures across the heat exchanger and,
if necessary, the preheater is switched on.
This guarantees a proper ventilation balance,
even at very low outdoor temperatures.
If, with switched on standard preheater(s),
the exchanger temperature still starts to drop
below zero, stepless unbalance is created in
the appliance.
The user information menu shows when the
Slimline 150 frost control system is activated
(see page 19).
Bypass valve open
-The outdoor temperature is higher than 10°C and
-The outdoor temperature is lower than the indoor temperature in the dwelling
and
-The temperature in the dwelling is higher than the temperature set at step
no.5 in the settings menu
(set a standard at 24°C).
Bypass valve closed
-The outdoor temperature is lower than 10°C or
-The outdoor temperature is higher than the indoor temperature in the dwelling
or
-The temperature from the dwelling is lower than the temperature set at
step no. 5 in the settings menu minus the set temperature by the hysteresis
(tolerance) (step no. 6), this temperature is factory set at 22°C (24.0°C minus
2.0°C).
02 Technical Specifications
