85
R
T
U
V
O
P
A
E F
G
H
K
M
N
D
W
BC
L
S
Fig. 72
A
Condenser
B
Secondary circuit air vent valve
C
Secondary circuit flow temperature sensor
upstream of instantaneous heating water heater
(F3)
D
Reversible suction gas temperature sensor (F24)
E
Type AWBT(-M)-E/AWBT(-M)-E-AC only:
Instantaneous heating water heater
F
Quick-action air vent valve G
⅜
G
Secondary circuit flow temperature sensor (F8)
H
3-way diverter valve "central heating/DHW heat-
ing"
K
Safety valve
L
Pressure gauge
M
Flow switch
N
Secondary pump
O
Secondary circuit air vent valve, DHW cylinder
P
Secondary circuit drain and fill valve
R
Drain and fill valve, DHW side
S
Type AWBT(-M)-E/AWBT(-M)-E-AC only:
High limit safety cut-out (STB), instantaneous
heating water heater
T
Secondary circuit return temperature sensor (F9)
U
Liquid gas temperature sensor (F25)
V
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.
W
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.
Maintenance
Overview of internal components: Indoor unit
51
17 700 GB
Maintenance
