18
INSTALLATION
2.7
Typical water system schematics
Typical schematic - Central heating system - GITRÈ
1
Boiler
2
Central heating system man-
ifolds
3
Disconnect valves
4
Pumps
5
Non-return valves
6
Automatic vent valve
7
Boiler safety valve
8
Boiler drain cock
9
System filling cock
10
Water softener filter
11
CH expansion vessel
8
1
DRAIN
DRAIN
CENTRAL
HEATING
RETURN
CENTRAL
HEATING
FLOW
3
9
11
10
6
3
3
3
3
4
5
3
2
2
7
3
Schematic diagram - central heating and domestic hot water production - GITRÈ B/100
1
Boiler
2
Central heating system man-
ifolds
3
Disconnect valves
4
Pumps
5
Non-return valves
6
Automatic vent valve
7
Boiler safety valve
8
Boiler drain cock
9
Storage cylinder safety valve
10
System filling cock
11
CH expansion vessel
12
Storage cylinder
13
Storage cylinder drain cock
14
DHW expansion vessel
15
Water softener filter
16
Pressure reducer
17
DHW recirculation pump
8
13
INLET
12
DRAIN
DRAIN
CENTRAL
HEATING
RETURN
CENTRAL
HEATING
FLOW
DHW USER
3
3
3
3
3
17
5
3
9
14
3
1
15 16 3
4
5
3
2
7
6
11
3
10
15
3
9
The DHW and central heating circuits must incorporate expansion vessels of adequate capacity as well as suitably rated safety
valves. The condensate drain must be connected to a suitable collection and drain system.
9
The choice of system components and the method of their installation are left up to the heating engineer installing the system.
Installers must use their expertise to ensure proper installation and functioning in conformity to all applicable legislation.
9
If needed, water supplies and recovery circuits must be conditioned by suitable treatment systems. Refer to the values listed in
the table on page 22.
0
Never run the boiler or the pumps dry.
