41
+
Refrigerant lines from/to the exter-
nal unit
Symbol
Meaning
Connection
DHW cylinder flow (heating water side)
G 1¼
+
Heating water return and DHW cylinder
return
G 1¼
Heating water flow
G 1¼
1.
Equip the secondary circuit on site
with an expansion vessel and safety
assembly (in accordance with
DIN 4757).
Fit the safety assembly to the on-site
line in the heating water return (see
page 76).
2.
Connect secondary lines to the heat
pump.
!
Please note
To prevent equipment dam-
age,
connect on-site secondary
lines to the heat pump so that
they are free of load and tor-
que stresses.
Make tight hydraulic connec-
tions on the secondary side.
3.
Fill and vent secondary circuit.
Installation sequence
Connecting a secondary circuit
5604 692 GB
Installation