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Using the control panel
Introduction
This section describes how to use the keypad located in the front of the unit. The func-
tionality varies depending on if any accessory is mounted. On the front of the unit you
will find a quick guide under the upper cover.
Summer cooling
mode
Summer mode will stop the supply fan, and new colder outside fresh air needs to be
supplied through and open window.
Press and hold for 5 seconds for enabling or disabling summer
mode
Supply fan operation will stop in summer mode.
Cold outside air will be supplied into the house directly if open-
ing some windows - exhaust fan will keep extracting air from the house creat-
ing an air flow.
Summer mode can only be activated if T1 is above 14°C
When summer mode is active the LED flashes 5 seconds on I seconds off:
Auto bypass cooling
mode
Automatic bypass cooling is dependent on user settings. On HRC and PC tool the
following is possible:
Setting the minimum outside temperature within the range 8-15°C.
Setting the bypass setpoint in which the bypass damper is opened. Range is
22-30°C, with the possiblety to select “off” to disable the auto bypass
This parameter is named Tmax.
When the following is present the automatic bypass cooling will then be active.
If outside air is 2°C lower than inside
AND the Tmin is higher than setpoint between 8-15°C.
AND the Tmax is higher than setpoint (between 22-30°C)
Bypass is closed if any of the three conditions is outside range with 2°C
Bypass LED will light permanenly when damper is open
Continued overleaf
