25
INSTALLER
INSTALLER
Combination with multiple boilers and cascade sequence with motorised valve
15
10
12
3
3
3
3
3
3
3
16
16
16
3
15
7
7
7
M
8
13
3
8
13
3
13
14
8
3
CENTRAL
HEATING
RETURN
CENTRAL
HEATING
SUPPLY
LT (*)
RETURN
LT (*)
RETURN
LT (*)
RETURN
FLOW
FLOW
FLOW
1
2
1
2
1
2
COLD
WATER
INLET
1
Boiler
2
Burner
3
Disconnect valves
4
Central heating system pump
5
Non-return valves
6
Automatic vent valve
7
Boiler safety valve
8
Boiler drain cock
9
Y filter
10
Pressure reducer
11
CH expansion vessel
12
Water softener filter
13
Siphon
14
Condensate outlet
15
Boiler drain
16
Cascade sequence motorized valve
M
Pressure gauge
SP
Cascade control panel
TC
Temperature control
EAF
Domestic cold water inlet
(*)
LT = Low temperature
