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Internal installation WPL 33
Dimensions in mm
Water and power connections WPL 33 internal installation
1
Condensate drain
2
Heating flow
3
Heating return
4
Control panel
5
Air vent valve
6
High limit safety cut-out
DHC cartridge 3D-C
Internal installation WPL 33
1
Heat pump
2
impact sound insulation
3
Floating screed
screed and impact sound
insulation. recess
if provided.
inteRnal installation Wpl 33
Air routing with hoses
the total length of hoses on the air
inlet and discharge side must not
exceed 8 m. never incorporate more
than four 90° bends.
the hose will tend to sag because of
its flexibility; therefore secure it in
approx. 1 m intervals. special hoses
are used to route the inlet air from
the outside to the heat pump and
discharge air from the heat pump
to the outdoors. these hoses are
highly flexible, thermally insulated
and are self-extinguishing in case of
fire. thermally insulated hoses are
available in 3 m and 4 m lengths
(li Ø 560 mm).
Air routing with air ducts
with air routes longer than 8 m,
air ducts can also be connected to
the heat pump. the cross-section of
the air duct varies according to the
air flow rate and according to the
externally available, static pressure
differential of the heat pump. to
reduce the transfer of structure-borne
noise in the building, install an air
hose or canvas flange between the
heat pump and the air ducts. when
sizing air ducts and grilles, observe
the external pressure of the fan.
Special features
if the heat pump is installed in an
enclosed room containing combustion
appliance that takes its a combustion
air directly from the room (open
flue operation), then a ventilation
aperture to the installation location
with 250 cm² diameter is required,
to prevent the heat pump from
influencing the operation of the gas
or oil burner. without this additional
ventilation, small, unavoidable
leakages on the air inlet side, e.g. at
hose connectors or at the heat pump,
will reduce the air pressure in the
enclosed room to unacceptable levels.
Summary of Contents for Heat pumps
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