Hydraulic connections
AW 4 | 5 | 7 OR-S – 6721866761 (2023/06)
16
Fig. 26 Condensation drain in sewage / rain drainage
[1] Siphon
Fig. 27 Condensation drain in gravel bed
[1] Concrete plinths
[2] Shingle 300 mm
[3] Condensation water pipe Ø 100 mm
[4] Gravel bed
5.3 Connect the heat pump to the indoor unit
NOTICE
Material damage due to excessively high tightening torque!
If connections are tightened too tightly, the heat exchanger may be
damaged.
▶ When installing the connections, the tightening torque should be no
more than 150 Nm.
Short connections outside reduce heat loss. Pre-insulated pipes are
recommended.
▶ Connect the flow line to the indoor unit to the heat transfer medium
outlet ( [1], Figure 28).
▶ Connect the return line from the indoor unit to the heat transfer
medium inlet ( [2], Figure 28).
▶ Tighten the heat transfer medium pipe connections with a 120 Nm
torque. Use a second wrench to apply counter torque while
tightening.
If the connection does not seal properly, the connector can be
torque-tightened to a maximum of 150 Nm. If the connection still
does not seal properly, this is indicative of damage to a gasket or
connecting pipes.
Fig. 28 Heat transfer medium pipe connections; description applies to
all sizes
[1] Heat transfer medium outlet (to indoor unit) DN25
[2] Heat transfer medium inlet (from indoor unit) DN25
900 mm
2
4
3
11
0010039882-002
0010039883-001
1 2
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