065379 • Version 1.1 • 06.03.2013
The fireplace function is designed to create overpressure in the house, so
that the fireplace can be lit without problems. The overpressure is created
by stopping the extraction and maintaining the supply at fan step 3.
The function is activated/deactivated by pressing UP for 5 seconds, then
FP15 is shown in the INFO LINE = fireplace mode for 15 min. It now counts
down (FP14…FP01) till 15 minutes have passed, and then the unit returns
to the previous operation mode.
Supply air temperature (T2) gets equal to the outdoor temperature (T1),
while in FP mode as the heat recovery is temporarily out of operation.
The fireplace function cannot be activated if outdoor temperature (T1) is
lower than -13°C. This can be solved by a preheater (accessory).
The built-in AUTOMATIC BYPASS-COOLING mode is used during summer
time when the outdoor temperature is higher than 15°C, as long as it is
lover than inside air temperature. This means it is not necessar
the MANUAL BYPASS-COOLING during this period.
The setpoints for AUTOMATIC BYPASS-COOLING can be adjusted if need-
ed in the INSTALLER MENU.
MANUAL BYPASS-COOLING (BYP6)
The MANUAL BYPASS-COOLING mode can be useful if cooling is needed in
the spring or autumn (when the outdoor temperature is below 15°C) in-
stead of using the heat recovery function.
MANUAL BYPASS-COOLING is activated by pressing DOWN for 5 sec. and
the display will shows BYP6 and the unit will be cooling for 6 hours. After
the 6 hours the unit returns to heat exchanger mode with AUTOMATIC BY-
PASS-COOLING.
Only when the conditions for BYPASS-COOLING mode are actually present
the display will show parallel air channels (no heat recovery) and the
BYPASS-COOLING damper opens.
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