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B.2
Functional diagram
Validity: Except for the product with magnetite separator
ODU
DHW
A1
Automatic air vent
A2
Heating circuit expansion vessel
CP1
Heating pump
HE1
Condenser
HE2
Electric back-up heater
M1
Manometer
T1
Domestic hot water cylinder
V1
3-port valve
V4
Filling/draining cock
V5
Filling/draining cock
V9
Expansion relief valve
8000017440_FT Installation and maintenance instructions
HE 1
V 5
TT 665
T 1
V 4
FM 620
HE 2
TZ 645
TT 650
V 9
M 1
PT 600
M
V 1
V11
Potable water safety assembly
V18
Service valves
TT125
Condenser inlet temperature sensor
TT135
Condenser outlet temperature sensor
PT600
Building circuit water pressure sensor
TT610
Building circuit return temperature sensor
TT620
Building circuit flow temperature sensor
FM620
Building circuit volume flow sensor
TZ645
Electric back-up heater safety cut-out
TT650
Electric back-up heater flow temperature sensor
TT665
Domestic hot water cylinder's temperature sensor
Module
A 1
el.
A 2
CH
CP 1
241
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