HPAC is part of a system, with a FIGHTER 1120/1220
heat pump and a HPAC heat exchanger module as
the principal components. FIGHTER 1120/1220 has
an integrated control system to control heating/cool-
ing, integrated circulation pumps and is connected via
the HPAC module to the external collector and the
building's distribution system for heating and cooling.
The heat exchange from the heat source (rock, ground
or lake) takes place via a closed collector system
where water mixed with antifreeze circulates to the
heat pump.
Ground water can also be used as a heat source how-
ever, this requires an intermediate heat exchanger
between the HPAC and the ground water.
The HPAC cannot be used for docking with an oil-fired
boiler.
Brine out
(from the heat pump)
General
Principle of operation
To distribution system
FG
3
1
1
3
Brine in
To collector
(to heat pump)
From distribution system
1
3
3
1
From
Heating medium
collector
return (to heat
pump)
HPAC 28
HPAC
Heating medium
flow (from the heat
pump)
GB
19