Zehnder Rittling ComfoAir Q, Installer Manual, Page: 21 / 52

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7.3.2 MAIN BOARD SETTINGS
> MENU > INSTALLER SETTINGS > MAIN BOARD SETTINGS
Menu item Function
VENTILATION PRESETS
To set the airflow of the position switch.
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PRESET A: set the airflow of the absent position
(Default ComfoAir Q 350: 20 l/s)
(Default ComfoAir Q 450: 20 l/s)
(Default ComfoAir Q 600: 20 l/s)
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PRESET 1: set the airflow of the low position
(Default ComfoAir Q 350: 45 l/s)
(Default ComfoAir Q 450: 60 l/s)
(Default ComfoAir Q 600: 75 l/s)
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PRESET 2: set the airflow of the normal position
(Default ComfoAir Q 350: 65 l/s)
(Default ComfoAir Q 450: 80 l/s)
(Default ComfoAir Q 600: 100 l/s)
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PRESET 3: set the airflow of the high position
(Default ComfoAir Q 350: 80 l/s)
(Default ComfoAir Q 450: 100 l/s)
(Default ComfoAir Q 600: 125 l/s)
You cannot set a preset higher than the next preset. Thus it is best to set the maximum preset first and work
back to the lower presets.
VENTILATION CONTROL
To set the mode of airflow control.
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FLOW CONTROL: the unit will regulate the airflow around the set airflow. External influences on the
airflow will be corrected only when necessary, while small and short variations in airflow are allowed. This
ensures a more steady behavior of the fan speed; (default setting)
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CONSTANT FLOW: the unit will regulate the airflow to the exact set airflow. External influences on the
airflow will be corrected immediately. The fan speed will constantly be corrected.
FILTER SETTINGS
To set the RESET options of the filters.
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FILTER WARNING: to set the time necessary for ordering the new filters; (Default: 21 days)
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RESET FILTER COUNT: to replace the filters before the filter warning has appeared. The internal counter
of past air will be reset.
ALTITUDE
To set the altitude range in which the system is installed.
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0 - 500 m: the unit is maximally installed 500m above sea level; (default setting)
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500 - 1000 m: the unit is installed between 500 and 1000 meter above sea level;
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1000 – 1500 m: the unit is installed between 1000 and 1500 meter above sea level;
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1500 – 2000 m: the unit is installed between 1500 and 2000 meter above sea level.
FIRE PLACE PRESENT
To set the presence of a fire place in the dwelling.
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NO: the unit will allow the function EXTRACT ONLY. A positive and a negative unbalance can be set in the
UNBALANCE menu. (default setting)
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YES: the unit will not allow the function EXTRACT ONLY. Only a positive unbalance can be set in the
UNBALANCE menu.
UNBALANCE
To set the required difference between the supply and extract air .
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0 %: the unit will send the same amount of power to the supply air fan and extract air fan; (default setting)
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positive %: the unit will decrease the airflow of the extract air;
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negative %: the unit will decrease the airflow of the supply air.
DIRECT FAN CONTROL not applicable (Do not activate)
SERVICE MODE
To set the operating mode of the unit.
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ACTIVE MODE: the unit will function as intended; (default setting)
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SERVICE MODE: the unit will turn off the basic functions of the unit and set the modulating by-pass
valves to 50% to allow optimal access to all service parts.