Water Connecting Pipe; Connection Of Heat Pump To The Indoor Unit - Bosch Compress 7000i AW Installation Manual

Installation
Heat pump Delta heat
transfer medium
(K)
5 OR-S 5
7 OR-S 5
9 OR-S 5
13 OR-S/T 5
17 OR-T 5
1) For pipes and components between the heat pump and indoor unit.
2) The installation of a 3-way valve in the DHW circuit of the system was factored into the calculation of the pipe lengths.
3) This pipe length applies if a diverter valve is not installed in the DHW circuit of the system.
Table 6 Pipe dimensions and maximum pipe lengths (single section) for connecting the heat pump to the AWE indoor unit with integrated electric
booster heater
5.5.2

Water connecting pipe

NOTICE
Damage due to risk of frost!
If the condensate freezes and cannot be routed away from the heat
pump, the evaporator may be damaged.
▶ Always install pipe trace heating if ice is likely to form in the
condensate hose.
Remove condensate via a frost-free drain of the heat pump, possibly
equipped with pipe trace heating. The drain must slope sufficiently to
prevent water from accumulating in the pipe.
The condensate can be routed to either a gravel bed, a stone box or into
a rainwater gully.
▶ Route 32 mm plastic pipe from the condensate connection to a drain.
▶ Connection of pipe trace heating  Chapter 7.1.
1 2
Fig. 16 Condensate tube connections, valid for all sizes
[1] Condensate line in rainwater gully
[2] Condensate line in gravel bed/stone box
[3] Connection for condensate tube
12
Nominal flow Maximum
rate (l/s) pressure
reduction (kPa)
0.32 55
0.34 57
0.43 44
0.63 34
0.82 10
3
AX20 inside Ø AX25 inside Ø
15 (mm) 18 (mm)
1)
Maximum pipe length [A, 15] PEX (m)
9 23
8,5 21.5
10.5
5.5.3

Connection of heat pump to the indoor unit

NOTICE
Material damage due to excessively high starting torque!
If connections are tightened too tightly, the heat exchanger may be
damaged.
▶ When installing the connection, the tightening torque should be no
more than 150 Nm.
Short pipe runs outdoors reduce heat losses. Use of pre-insulated pipes
is recommended.
▶ Use pipes in accordance with Chapter 5.5.1.
▶ Connect flow to the indoor unit at the heat transfer medium outlet of
the heat pump ( [1], Fig. 17).
▶ Connect return from the indoor unit at the heat transfer medium inlet
of the heat pump ( [2], Fig. 17).
▶ Tighten connections of the heat transfer medium pipes with a
starting torque of 120 Nm. Direct the force downwards ( Fig. 17)
to avoid lateral loading of the condenser.
If the connection does not seal properly, the joint can be tightened
with a starting torque of up to 150 Nm. If the connection is still not
tight, this indicates that the gasket or connected pipe is damaged.
AX32 inside Ø AX40 inside Ø
26 (mm) 33 (mm)
2)
30
30
30
24
3)
11
Compress 7000i AW – 6721830633 (2021/02)
30
3)
30