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1 General information
These installation instructions are for
contractors. The heat pump installation also
requires the operating instructions of the heat
pump manager WPM II.
The heating system heat pumps and the WPM
II represent one function unit. Consequently,
their instructions are matched to each other.
Subject to the relevant system, observe the
installation instructions of the components of
which the system comprises.
1.1 Equipment description
zFor fully automatic heating of heating water
to a flow temperature of 60 °C.
zSuitable for underfloor heating and
radiator heating systems; preferred are
low temperature heating systems, as these
achieve higher performance factors.
zExtracts energy from the ambient air
(outside) even at outside temperatures as
low as -20 °C outside temperature and
50 °C flow temperature.
zComprises all components required for its
function and all safety equipment.
zCentral control of the heating system and
safety functions through the WPM II heat
pump manager (required accessory, part no.
see section 1.6).
zCorrosion-protected, external casing made
from hot-dipped galvanised sheet steel plus
stove enamelled finish.
zCompact design, therefore modest space
requirements for interior or exterior
installations.
zTest symbol of independent test bodies
(see type plate).
zFilled with non-combustible safety
refrigerant R407C.
1.2 Function
Heat is extracted from the outside air at
temperatures ranging from + 30 °C to
-20 °C by the heat exchanger on the air side
(evaporator). Heating water is heated to flow
temperature levels in the heat exchanger
on the water side (condenser) by this
extracted heat and additional heat from the
electrical power used by the compressor. At
air temperatures below approx. +7 °C, the
humidity in the air condenses as hoar-frost
on the evaporator fins. This hoar-frost is
automatically defrosted. Any water created
from this defrosting is caught in the defrost
basin and drained off via a hose (Fig. 7 and 8).
The fan is switched OFF and the heat
pump circuit is reversed to activate
the defrost cycle. The energy required
for defrosting is drawn from the heating
system.
The heat pump automatically reverts to
heating mode at the end of the defrost cycle.
Special features for the WPL....IK / IKS
The WPL....IK/IKS includes the heat pump
manager WPM II as standard. It also includes
an integral central heating circulation pump,
an expansion vessel and a three-way valve
for changing over between DHW and central
heating. Also, the air hoses with suitable
fixing material are included in the standard
delivery.
1.3 Correct operation
The heat pump is designed for extracting
heating energy from the air and for utilising
this energy in water-based heating systems
within the stated operating temperature
range.
1.4 Incorrect operation
The installation location must be prepared by
your contractor in line with section 3.2. Never
operate the heat pump in areas at risk from
explosions or outside the stated operating
temperature range.
1.5 Regulations and standards
Observe the following regulations and
standards during assembly and installation.
On the water side:
DIN EN 12828.
Safety equipment for hot water heating
systems
DIN 1988: Technical rules for DHW installations
TRD 721: Safety equipment to prevent excess
pressure - safety valves
On the electrical side:
DIN VDE 0100: Regulations for the installation
of HV systems with rated voltages up to
1000 V.
VDE 0701: Regulations regarding the repair,
modification and testing of used electrical
equipment.
TAB: Technical connection conditions for
connections to the LV mains.
On the refrigerant side:
EN 378: Safety and environmental
requirements
DIN 7003: (draft)
General:
Collation of technical requirements for
boiler rooms, e.g. boiler room guidelines
or national/local Building Regulations,
commercial and fire as well as emission
control regulations and requirements
TA Lärm: Technical instructions to protect
against noise emissions
Installation instructions for contractors
1.6 Standard delivery and accessories
Standard delivery IK version
– Standard unit WPL 10 22 08 10
– Standard unit WPL 7 22 20 47
– Accessories (2 x air hose with fixing materials) 22 08 25
Accessories – internal installation
Wall outlet with external wall grille 16 65 19
Air hose with thermal insulation, 4 m 16 80 84
Hose connection plate 16 71 20
Condensate pump PK9 18 21 38
Accessories – external and internal installations
Cylinder SBP 200 E 18 54 58
Cylinder SBP 400 E 22 08 24
Cylinder SBP 700 E 18 54 59
Heat pump manager with wall mounting enclosure, WPMW II 18 54 50
Heat pump manager as control panel mounted version, WPMS II
18 54 51
Mixer module with wall mounting enclosure, MSMW 07 45 19
Mixer module as control panel mounted version, MSMS 07 45 18
Pressure hose G 1¼” x 1 m (DN25) 07 44 15
Pressure hose G 1¼” x 2 m (DN25) 07 44 16
Pressure hose G 1¼” x 5 m (DN25) 07 44 17
Pressure hose G 1¼” x 10 m (DN25) 07 44 18
Pressure hose G 1¼” x 1 m (DN25) (to be trimmed to size) 18 56 46
Hose fittings for pressure hose G 1¼” (DN25) 00 37 13
Heat pump compact installation set WPKI 5 22 08 30
UP kit 25 - 60 (for WPKI 5) 07 43 25
UP kit 25 - 80 (for WPKI 5) 07 43 16
Heating system remote control FE 7 18 55 79
Contact sensor AVF 6 16 53 41
Immersion sensor TF 6 16 53 42
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