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INSTALLATION
16
4.5.
Connection diagrams
Legend
1.
Boiler
RS
Ball valve
2.
Expansion vessel
CS
Non-return valve
3.
Boiler safety kit
RG
Drain valve
4.
Heating circuit pump
5.
HUW pump
6.
Y-filter
7.
Chemical filter
8.
Automatic water fill valve
9.
Filling line
10.
Hot water boiler
11.
Dual safety valve pressre/temperature
12.
Heating installation
–
radiators
13.
Heating installation
–
floor heating
IMPORTANT NOTE: When there is only one zone (high or low temperature) always
connect the return pipe to the Low temperature boiler inlet (T2c).