23
+
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 64).
2.
Connect the secondary circuit lines to
the heat pump.
!
Please note
To prevent appliance dam-
age,
connect on-site secondary cir-
cuit lines to the heat pump so
that they are free of load and
torque stress.
Make tight hydraulic connec-
tions on the secondary side.
3.
Fill and vent secondary circuit.
Installation sequence
Connecting a secondary circuit
5782 176 GB
Installation
