28
Type AWB/
AWB-M/
AWB-E-AC/
AWB-M-E-AC
Line
Connection to the
outdoor unit
Torque in Nm
201.D04
201.D06
Liquid line
7
6 mm
⅝
UNF
with reducer
33 to 42
⅝
x
⁷
⁄
₁₆
14 to 18
Hot gas line
7
12 mm
⅞
UNF
with reducer
63 to 77
⅞
x
¾
50 to 62
201.D08
201.D10
201.D13
201.D16
Liquid line
7
10 mm
⅝
UNF
33 to 42
Hot gas line
7
16 mm
⅞
UNF
63 to 77
4.
Apply thermal and vapour diffusion-proof insulation
to the refrigerant lines.
Connecting the secondary circuit
+
Fig. 25
Symbol
Meaning
Connection
Refrigerant lines from/to the
outdoor unit
See page 23
DHW cylinder flow (heating
water side)
G 1
¼
+
Heating water return and
DHW cylinder return
G 1
¼
Heating water flow
G 1
¼
1.
Equip the secondary circuit on site with an expan-
sion vessel and safety assembly (in accordance
with DIN 4757).
Fit the safety assembly to the on-site line in the
heating water return.
2.
Connect the secondary circuit lines to the heat
pump.
!
Please note
Mechanically loaded hydraulic connections
lead to leaks, vibration and appliance dam-
age.
Connect on-site lines so that they are free of
load and torque stress.
3.
!
Please note
Leaking hydraulic connections lead to appli-
ance damage.
■
Check the internal and on-site hydraulic
connections for leaks.
■
In the event of leaks, drain off liquid via the
drain valve. Check the seating of seal
rings.
Always
replace displaced seal
rings.
Note
The secondary circuit air vent valve is located
inside the appliance. To vent, connect the hose to
the air vent valve and route outwards.
Observe additional information regarding filling and
venting: See page 62.
4.
Thermally insulate lines inside the building. Use
thermal and vapour diffusion-proof insulation for
type AWB(-M)-E-AC.
5.
Connect the drain hose to the safety valve.
Connect the drain hose to the public sewage sys-
tem with a fall and a pipe vent.
Installation sequence
Connecting the refrigerant lines
(cont.)
5790 931 GB
Installation
