Riello RTC-80 Series Installation, Operation And Service Manual page 28

INSTALLATION
Single Boiler Piping Schematic Type B
RTC 5500-80
FLOW
2
1 Boiler
2 Burner
3 Isolation valves
4 Central heating system pump
5 Non-return valves
6 Automatic vent valve
7 Boiler safety valve
8 Boiler drain valve
9 Y strainer
10 Pressure reducer
11 Expansion tank
LT (*)
CENTRAL
HEATING
RETURN
16 17 16
7
16
1
28
6
3 10
5
3 3
MAKE-UP
3
WATER
3 9
18
3
3
11
LT RETURN
10
12 3
3
WATER
19 INLET
3
13
8
15
14
12 Water softener filter
13 Siphon
14 Condensate outlet
15 Drain
16 Isolation valve
17 Non-return valve
18 Air separator
19 Pressure gauge
(*) LT Low Temperature
CENTRAL
HEATING
SUPPLY
3 3
5
4 4
3 3
15