Technical data

www.dimplex.de 01.2012 | Project planning manual for heat pumps for heating and domestic hot water preparation | 71
Domestic hot water preparation with heat pumps 6.3.4
6.3.3 Ventilation variants
Variable switching of the intake air
A pipe duct system with integrated bypass flap allows the varia-
ble use of the heat extracted from outdoor or indoor air for do-
mestic hot water preparation (lower operating limit: + 8 °C).
Cooling in recirculating air operation
Indoor air is removed by suction from storage rooms or wine cel-
lars, and is then cooled and dehumidified in the domestic hot
water heat pump and blown out again. Suitable locations for in-
stallation include hobby rooms, furnace rooms and laundry
rooms. The air ducting in the heated section of the system should
be insulated with water-proof insulation to prevent the formation
of condensate.
Dehumidifying in recirculating air operation
Dehumidified air in laundry rooms can be used to dry laundry and
prevents damage caused by dampness.
Waste heat is useful heat
Our standard heat exchangers (AWP 30HLW and BWP 30HLW
only) for domestic hot water heat pumps enable direct connec-
tion of a second heat generator, e.g. a solar energy system or a
boiler.
6.3.4 Domestic hot water heat pumps for indoor air as a heat source
The domestic hot water heat pump BWP 20A uses exhaust air
from living spaces (approx. 20 °C) as a heat source for domestic
hot water preparation. This way it is possible to implement simple
and economical combination of controlled ventilation and domes-
tic hot water preparation. With a cylinder volume of 200 l the de-
vice is especially suited for use in flats and apartments. The in-
stallation dimension of 60 cm allows covering with a front panel.
The device has an optional connection for an air distribution sys-
tem with nominal width DN 125.
NOTE
Further, more detailed information on BWP 20A can be found online, in
the download area at www.dimplex.de.