Connection; Pipework Connections, General - Bosch Compress 7001i AW Installation Manual

5.5

Connection

5.5.1

Pipework connections, general

NOTICE
Residue in the pipework can damage the system.
Solids, metal/plastic filings, flux and thread tape residue and similar
material can get stuck in pumps, valves and heat exchangers.
▶ Keep foreign bodies from entering the pipework.
▶ Do not leave pipe parts and connections directly on the ground.
▶ When deburring, make sure that no residue remains in the pipe.
▶ Before connecting the heat pump and indoor unit, rinse the pipe
system to remove any foreign bodies.
NOTICE
Material damage due to frost and UV radiation!
In case of a power outage the water in the pipes may freeze.
The insulation may become brittle due to UV radiation and crack after
some time.
▶ Use insulation with a thickness of at least 19 mm for pipework and
connections outdoors.
▶ Install drain valves so that the water can be drained out of the lines to
and from the heat pump if it is not going to be used for some time or
if there is a risk of frost.
▶ Use UV and moisture-resistant insulation.
Insulation/Sealing
▶ All heat-conducting pipework must be provided with suitable thermal
insulation according to applicable regulations.
▶ In cooling mode, all connections and lines must be insulated
according to applicable standards to prevent condensation.
▶ Seal wall outlet.
Dimension pipes according to instructions (Tab. 6– 8).
▶ To minimise pressure drops, avoid joints in the heat transfer medium
line.
▶ Use PEX pipes for all pipework between the heat pump and indoor
unit.
▶ To avoid leaks, only use material (pipes and connections) from the
same PEX supplier.
▶ To make installation easier and to avoid breaks in the insulation, use
of insulated AluPEX pipes is recommended. The purpose of PEX and
AluPEX pipes is to damp vibrations and reduce noise transmission to
the heating system.
If materials other than PEX are used, the following prerequisites must be
met:
▶ Install a particle filter which is suitable for use outdoors in the return
to the heat pump directly at the heat exchanger.
▶ Insulate the particle filter and also the other connections.
▶ Establish the connection to the heat pump using a vibration-damping
hose which is suitable for use outdoors and also insulate it.
Compress 7001i AW – 6721835318 (2021/09)
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Fig. 15 Pipe length A
[1] Indoor unit floor standing
[2] Heat pump
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A
Fig. 16 Pipe length A
[1] Indoor unit wall mounted
[2] Heat pump
Installation
A
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2
0010036852-001
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