68
%
lJ
aJ
?
A
B
C
F
E
D
G
K
H
a:C]
B
,
sG
Fig. 57
?
Flow temperature sensor, secondary circuit
(alternative positions)
%
Cylinder temperature sensor
aJ
Secondary circuit return temperature sensor
sG
Secondary pump
lJ
3-way diverter valve for "Central heating/DHW
heating"
a:D
B
PWM signal, secondary pump
A
DHW cylinder air vent valve for internal indirect
coil
B
Drain & fill valve, DHW cylinder: See following
chapter.
C
Instantaneous heating water heater with high
limit safety cut-out
D
Drain & fill valve, secondary circuit
E
Service valve, internal unit: Schrader valve,
can be used in place of the external unit serv-
ice valve for pressure checks and evacuating
the refrigerant circuit; see page 50.
F
Liquid gas temperature sensor (IRT)
G
Flow temperature sensor, secondary circuit,
upstream of instantaneous heating water
heater (LWT)
Maintenance
Overview of internal components: Internal unit
5700 562 GB
Maintenance
