Installation manual

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Air-to-Water Heat Pumps 2.2.5
2.2.5 Air-to-water heat pumps in a compact design for indoor installation
In addition to the heat source, with compact air-to-water heat
pumps the components for direct connection of an unmixed
heating circuit are integrated.
Air circuit diverted at a 90° angle or on walls
The heat pump allows for installation in a corner without
additional ducts. Wall installation is also possible in combination
with an air duct on the air outlet side.
The base frame must rest on a smooth, even and level surface.
The heat pump must be installed so that maintenance work can
be carried out without hindrance. This can be ensured by
maintaining a clearance of 1 m in front and to the left of the heat
pump.
The air intake opening of the device is designed for direct
connection to a wall opening. This is done by attaching the self-
adhesive sealing ring supplied and gently pushing the device
against the wall. It is essential that the interior side of the wall
opening is lined with thermal insulation (see Fig. 2.4 on p. 19) to
prevent the wall from becoming cold and to prevent moisture
from penetrating the wall (i.e. rigid polyurethane foam/aluminium
foil)
The air outlet can be optionally mounted directly to a wall
opening or to one of the GRC ducts available as accessories
(see Fig. 2.4 on p. 19 and Fig. 2.5 on p. 19).
The following air circuit components are available for compact
air-to-water heat pumps.
 RSG 500 rainguard
 Air ducts (LKL, LKB, LKK 500)
 DMK 500 sealing collar
Please observe the notes in Chap. 2.2.5 on p. 19 when using the
GRC air ducts available as accessories.
Basic Device
The heat pump is supplied complete with all of the important
components of the heating circulation system:
 Heat pump managers
 Expansion vessel (24 litre, 1.0 bar admission pressure)
 Heat circulating pump
 Overflow valve and safety components
 Buffer tank
 Supplementary electric heating system 2 kW
Installation example
1) Evaporator
2) Ventilator
3) Liquefier
4) Compressor
5) Heat circulating pump
6) Expansion vessel 24 l
7) Switch Box
8) Filter dryer
9) Inspection window
10) Buffer tank
11) Expansion valve
12) Overflow valve
Fig. 2.4: Corner installation 500 with wall opening insulated on site. An
adaptor (duct section) can also be used as insulation (Fig. 2.11 on
p. 57)
Fig. 2.5: Wall installation 500 with GRC air duct
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