34
INSTALLATION
Multi-Boiler Combination
15
3
10
12
3
3
15
6
3
3
3
11
3
3
3
3
3
10
9
5
7
7
7
SP
8
16
16
17 16
16
16
16
17 16
16 17
17
16
18
4
5
3
TC
8
13
3
8
13
3
13
14
1
1
1
FLOW
FLOW
FLOW
WATER
INLET
LT (*)
CENTRAL
HEATING
RETURN
LT
RETURN (**)
LT
RETURN (**)
LT
RETURN (**)
CENTRAL
HEATING SUPPLY
MAKE-UP
WATER
2
2
2
19
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
Control valve
18
Air separator
19
Pressure gauge
SP
Sequencing panel
TC
Control temperature
. _ . _ . Electrical signal
(*)
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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