Comfohood; Error Message Contact; Comfofond-L Q - Zehnder Option Box Manuel De L'installateur

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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 airfl ow
to PRESET 3 and opening the valve of the ComfoHood
cooker hood.
Installation
1. Install the ComfoHood
connector 4a (see the wiring diagram).
2. Install the ComfoHood
the wiring diagram).
3. Install the ComfoHood
the wiring diagram).
4. Install the mains power cable of the device.
Commissioning
After installation there is no need to commission the
ComfoHood1 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
ComfoHood1 valve when the switch is closed.
If the preset is adjusted manually while the switch is
closed the ComfoHood
ventilation unit will go to the selected preset.
When a time is set in the ventilation unit OPTION BOX
SETTINGS menu, the ComfoHood
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
higher than 60ºC the ventilation unit will close the
ComfoHood1 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.
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Only available in Switzerland
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temperature sensor to
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switch to connector 4b (see
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valve to connector 4c (see
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valve will remain open and the
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valve will remain
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detects a temperature

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.
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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 Q

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
1. Install the ComfoFond-L Q pump to connector 6b
(see the wiring diagram).
2. Install the ComfoFond-L Q outdoor temperature
sensor to connector 6a (see the wiring diagram).
3. Install the mains power cable of the device.
Commissioning
After installation there is no need to commission the
ComfoFond-L on the ventilation unit.
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Operation
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The ventilation unit will control the 6b (pump) connector
with the information received from the 6a (temperature
sensor) connector.
The fi rst two minutes after powerup of the ventilation
unit the sensor has not send 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 fi rst 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. If the ComfoFond-L
gives a poor result on the outdoor air temperature at
the ventilation unit, the ventilation unit will turn the
ComfoFond-L off.
EN - 23