Settings
9
FIGHTER 1120
If the FIGHTER 1120 is fitted with the accessory ETS
12 / ETS 121 the unit can be used solely as additional
heat (electric boiler) to produce heat and hot water.
This is especially useful, for example, before the col-
lector installation is finished.
Changing the “Electric boiler” is done in menu 9.2.4.
NOTE! Select “Off” to deactivate only additional
heat and select the required operating mode using
the operating mode button.
The brine pump normally follows the operation of the
heat pump. There is a special operating mode for con-
tinuous operation for 10 days, followed by return to
normal mode (used before stable circulation has been
established).
The setting is made on menu 9.2.12 “Brinepump 10
days”.
If required FIGHTER 1120 can be docked to an exter-
nal unit with its own heating controls. FIGHTER 1120
then delivers heat up to a fixed temperature level. This
is known as “fixed condensing”. To regulate the
room temperature, see the instructions for the external
units.
Not connected from the factory, requires the accesso-
ry ETS 12 / ETS 121.
FIGHTER 1120 can be complemented with “Domestic
hot water operation” and, for example, our VPA hot
water accumulator to produce domestic hot water.
The supply of heat to the building is controlled by the
control system settings (curve slope and offset). After
adjustment the correct amount of heat for the current
outdoor temperature is supplied. The flow line temper-
ature of the heat pump (heating medium flow) will hunt
around the theoretically required value (the value in
brackets on the display). For subnormal temperatures
the control system calculates a heating deficit in the
form of “degree-minutes”, which means that heating
production is accelerated. The larger the subnormal
temperature, the greater the heat production.
The heat pump's control system can control an immer-
sion heater in a maximum of seven output steps if fit-
ted, or an external oil-fired boiler and shunt valve.
Heat production Hot water production
Additional heat only (electric
boiler mode)
Brine pump
Fixed condensing
Standby mode
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