79
A
B C
D
E
F
T
H
K
L
M
N
O
P
R
S
U
V
G
Fig. 68
A
Condenser
B
Secondary circuit air vent valve
C
Only type AWB(-M)-E-AC:
Secondary circuit flow temperature sensor
upstream of instantaneous heating water heater
(F3)
D
Only type AWB(-M)-E-AC:
High limit safety cut-out (STB), instantaneous
heating water heater
E
Quick-action air vent valve G
⅜
F
Only type AWB(-M)-E-AC:
Instantaneous heating water heater
G
Secondary circuit flow temperature sensor (F8)
H
3-way diverter valve for "central heating/DHW
heating"
K
Return temperature sensor, secondary circuit (F9)
L
Secondary pump
M
Secondary circuit drain & fill valve
N
Safety valve
O
Pressure gauge
P
Indoor unit service valve: Schrader valve; can be
used in place of the outdoor unit service valve for
checking the pressure and evacuating the refriger-
ant circuit.
R
Reversible suction gas temperature sensor (F25)
S
Drain valve
T
Flow switch
U
Indoor unit service valve: Schrader valve; can be
used in place of the outdoor unit service valve for
checking the pressure and evacuating the refriger-
ant circuit.
V
Liquid gas temperature sensor (F24)
Maintenance
Overview of internal components: indoor unit
5790 931 GB
Maintenance
