32
INSTALLATION
Multiple-Boiler Piping with Motorized Sequencing Valves
RIT BT
15
10
12
3
16
16
16
16
16
16
17
17
17
3
15
7
7
7
8
13
3
8
13
3
13
14
8
3
1
1
1
CENTRAL
HEATING
RETURN
CENTRAL
HEATING
SUPPLY
WATER
INLET
LT
RETURN (**)
LT
RETURN (**)
LT
RETURN (**)
FLOW
FLOW
FLOW
2
2
2
18
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
12
Water softener filter
13 Siphon
14
Condensate outlet
15 Drain
16
Isolation valve
17
Motorized sequencing valve
18
Pressure gauge
(*)
LT= Low Temperature/HT= High Temperature
(**)
On the
RTC 1000-80
to
RTC 4700-80
the low
temperature heating return is located on the top
of the boiler. See "Single Boiler Piping Schematic
Type A".
Summary of Contents for 20165080
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