12
27 – Help function
This function can be used for the following:
Set point Function
0
The relay is off.
1
The relay is on when the system is running.
This can, e.g. be used to open and close
the outdoor air damper and the discharge
air damper.
2
The relay is on when extra heat is required or
when the circulating pump should run when
heating with water reheating is required.
3
The relay is on when the “Change filter” alarm
is active. This can be used to activate an
external alarm.
4
The relay is on when extra cooling is required.
This function is used if a preheater is also
fitted to the system.
5
The control can handle an earth heat
exchanger using a damper.
The relay will be on if one of the following two
conditions are met:
• The outdoor temperature, sensor T9, is
lower than the value configured in item 26
(frost protection temperature, typically set
at 5°C).
• The outdoor temperature, sensor T9,
is more than 1° above the temperature
configured in item 1 and 1 ° above the
current room temperature.
Setting option: between 0 and 5.
28 – System stop
Here you choose if it should be possible to stop the system
by pressing the key for speed (K1) in the operating menu for
3-4 seconds. If the set point is OFF, the system cannot be
turned off.
Setting option: ON/OFF
29 – Turn off bypass
To prevent the bypass damper from opening at low outdoor
air temperatures and from blowing cold, unheated air into
the dwelling, use this function to configure the lowest
outdoor air temperature, at which the damper must be
closed. The value is an expression of the greatest
difference that may exist between the temperature
configured in item 1 and the lowest outdoor air
temperature.
Setting option: Between 0 and 20 °C. If 0°C is selected,
the function is turned completely off.
30 – Modbus Mode
See separate description for MODBUS.
Setting option: 0-2.
0 = Modbus OFF
1 = 9600 Baud
2 = 19200 Baud
31 – Modbus Address
See separate description for MODBUS.
Setting option: 1-247.
32 – Humidity max. temperature
Setting the end point for outside temperature-
compensation (T3), see the X-axis on the graph.
Setting option: 5-25°C.
33 – Humidity max. value
Setting the end point for outside temperature
compensation, see the Y-axis on the graph (desired max.
humidity value).
Setting option: 35-85%.
34 – Humidity fan speed
Setting of how much the fan speed may differ in relation to
the desired fan speed. See menu items 11, 12, 14 and 15.
Setting option: 5-30%.
Examples
Set point 34 = ± 15%
With a desired fan speed of 3, the fan speed will be able to
fluctuate by ± 15%. Since fan speed 3 is set at 75% in
Service Menu 12 and 15, the fan speed will be max. 90%
and min. 60%.
The same applies to fan speed 2. Since fan speed 2 is set at
50% in Service Menu 11 and 13, the fan speed will be max.
65% and min. 35%.
Fan speed is regulated by ±1% once every 10 min.
Setting option: See item 35
