35
970005 •
Ver
sion
2.0 •
01.0
3.201
0
Temperature control PCB
Illustration
Temperature control PCB:
Part/function
This is a description of the different parts:
Part
°C
Function
c
Minimum supply
air fan – C2
10 – 30 The heater starts when the supply air (fresh
air) temperature falls to below the temperature
that is set here. The temperature is measured
by the duct temperature sensor (see “Tem-
perature sensors)
The set point for minimum supply temperature
must be lower than the set point for room tem-
perature.
d
Night lowering
temperature – C1
0 – 10
Night temperature (0 – 10 °C) indicates the num-
ber of degrees that you want to
lower
the normal
day temperature.
This means that if set on 8°C, the night tempera-
ture is not set to 8°C, but
lowered
by 8 °C.
e
Proportional span
for duct tempera-
ture – C2
1 - 5
The number of degrees set here (1 – 5 °C) al-
lows a span between ON and OFF in order to
prevent the burner from turning ON and OFF
several times per minute (due to temperature
fluctuations).
The proportional span for room temperature is
fixed at 1 °C.
f
Supply fan
Brænder2
Brænder1 – C2
-
Shows you which of these are operating
Info: Supply fan = air intake fan
g
Terminals
-
Connections are made by non-screw terminals
(WAGO). See the section concerning electrical
connections.
c
d
e
f
g
g
