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6.2
5.2 Condensate pipe
Condensed water that forms during operation must be drained
off frost-free. To ensure proper drainage, the heat pump must be
mounted horizontally. The condensed water pipe must have a
minimum diameter of 50 mm and should be fed frost-free into a
sewer. Condensate should not be discharged directly into clea-
ring tanks and cesspits because the aggressive vapours could
destroy the evaporator.
6 Assembly
6.1 General
The following connections need to be established on the heat
pump:
Heating system flows and returns
Condensate outflow
Control line to the heat pump manager
Power supply
6.2 Connection on heating side
The heating system connections on the heat pump are to be
made inside the device. Refer to the device information for the
connection sizes. Route the connection hoses out of the device
in a downwards direction. An optional pipe kit is available as an
accessory, which can be used to lead the connections out to the
side.
Use a spanner to firmly grip the transitions when connecting the
heat pump.
Before connecting the heating water system to the heat pump,
the heating system must be flushed to remove any impurities, re-
sidue from sealants, etc. Any accumulation of deposits in the li-
quefier could cause the heat pump to completely break down.
ATTENTION!
The dirt trap included in the scope of supply is to be installed in the heat
return before the heat pump.
Cleaning and maintenance instructions can be found in the dirt
trap's installation and operating instructions.
Once the heat pump has been connected to the heating system,
it must be filled, de-aerated and pressure-tested.
Consideration must be given to the following when filling the sys-
tem:
Untreated filling water and make-up water must be of drink-
ing water quality (colourless, clear, free from sediments)
Filling water and make-up water must be pre-filtered (pore
size max. 5µm).
Scale formation in hot water heating systems cannot be comple-
tely avoided, but in systems with flow temperatures below 60°C
the problem can be disregarded.
With medium and high-temperature heat pumps, temperatures
above 60°C can be reached.
The following standard values should therefore be adhered to
concerning the filling water and make-up water (according to VDI
2035 Sheet 1):
Minimum heating water flow
The minimum heating water flow through the heat pump (see de-
vice information chapter 11, section 4.1) must be ensured in all
operating states of the heating system. This can be accomplis-
hed, for example, by installing a manifold without differential
pressure.
Antifreeze
A method of manual drainage (see illustration) should be provi-
ded for heat pumps which are exposed to frost. The antifreeze
function of the heat pump manager is active whenever the mana-
ger and the heat circulating pump are ready for operation. The
system has to be drained if the heat pump is taken out of service
or in the event of a power failure. The heating circuit should be
operated with a suitable antifreeze if heat pump systems are im-
plemented in buildings where a power failure cannot be detected
(holiday home).
Total heat
output in [kW]
Total alkaline earths
in mol/m³ and/or
mmol/l
Total
hardness in dH
up to 200
≤
2.0
≤
11.2
200 to 600
≤
1.5
≤
8.4
> 600
< 0.02
< 0.11
Summary of Contents for LA 17TU
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