Zehnder Option Box V2 Manuel De L'installateur page 25

6 ComfoHood
The device is equipped with an
optional control to quickly and
safely extract cooking smells
and moisture from the kitchen.
This is done by setting the
airflow to PRESET 3 and
opening the valve of the
ComfoHood cooker hood.
Installation
■ Connect the ComfoHood temperature sensor
to connector 4a (see wiring diagram).
■ Connect the ComfoHood switch to connector
4b (see wiring diagram).
■ Connect the ComfoHood valve to connector
4c (see wiring diagram).
■ Install the mains power cable of the device.
Commissioning
After installation there is no need to commission
the ComfoHood on the ventilation unit. However
it is possible to set an overrun timer in the
ventilation unit OPTION BOX SETTINGS menu.
Operation
The ventilation unit will go to PRESET 3 and
open the ComfoHood valve when the switch is
closed.
If the preset is adjusted manually while the
switch is closed the ComfoHood valve will
remain open and the ventilation unit will go to
the selected preset.
When a time is set in the ventilation unit OPTION
BOX SETTINGS menu, the ComfoHood valve
will remain open and the ventilation unit will stay
in PRESET 3 for the set time after opening the
switch.
Safety function
If the sensor of the ComfoHood detects a
temperature higher than 60ºC the ventilation
unit will close the ComfoHood valve within
10 seconds, return to the normal ventilation
PRESET and give the error HOOD_TEMP
ERROR on the display of the ventilation unit.
If the connection with the sensor of the
ComfoHood is lost, the ventilation unit will close
the ComfoHood valve within 10 seconds, return to
the normal ventilation PRESET and give the error
HOOD_CONNECT ERROR on the display of the
ventilation unit.
1
Only available in Switzerland
5 Not applicable to Option Box V2 Lite
2,5
7 Error message contact
The device is equipped with an optional
potential-free error message output
contact to remotely indicate the presence
of an error on the ventilation unit.
Installation
Install an error indicator (e.g. LED) and its power
supply to connector 5 (see the wiring diagram).
If desired you can use one of the power supplies
for the 0-10V inputs to power the error indicator.
(GND to ERR 1 – ERR 2 to indicator – indicator to
12V).
Commissioning
After installation there is no need to commission
the error indicator on the ventilation unit.
Operation
The ventilation unit will close connector 5 when
the ventilation unit has an error.
8 ComfoFond-L Q5
The device is equipped with an optional
control of a sub-soil heat exchanger to
preheat or precool the outdoor air. The
ComfoFond-L Q is an air to liquid closed
circuit ground heat exchanger especially
designed for the ventilation unit.
Installation
■ Install the ComfoFond-L Q pump to connector
6b (see the wiring diagram).
■ Install the ComfoFond-L Q outdoor
temperature sensor to connector 6a (see
wiring diagram).
■ Install the mains power cable of the device.
Commissioning
After installation there is no need to commission
the ComfoFond-L on the ventilation unit.
Operation
The ventilation unit will control the 6b (pump)
connector with the information received from
the 6a (temperature sensor) connector. The first
two minutes after powerup of the ventilation
unit the sensor has not sent enough information
yet to know if the ComfoFond-L needs to be
turned on. Therefore the ComfoFond-L will
remain off for at least the first two minutes
after powerup of the ventilation unit. When the
ventilation unit is able to reach the requested
supply air without the assistance of the
ComfoFond-L, the ComfoFond-L will remain off.
EN - 25