18
FIGURE 5-5 - Multiple Boilers with Individual Primary Secondary, Zone Valves and (Optional) Indirect
# BOILERS ON
PIPE BRANCH
2
3
4
5
6
7
8
PIPE
SIZE
2
2-1/2
3
3
4
4
4
UP TO 6 BOILERS
PN 240012369, REV A [08/31/2018]
5 - HYDRONIC PIPING
1
12” (305mm) Maximum
Separation
Note
Note
* Manufacturer requires all domestic
hot water (DHW) installations use
an anti-scald valve. Local codes
may require additional equipment
(expansion tank, relief valves,
etc.) Select and size equipment
to suit installation and meet code
requirements.
Note
Use external pump relay or Zone Control to
interface system pump to boiler.
Note
CH/System Pump 1 must
match total capacity of all
boilers
# Boilers on
Pipe Branch
Pipe
Size
2
2
3
2½
4
3
5
3
6
4
7
4
8
4
S
Optional
Indirect
DHW Tank
Tank
Sensor
CH/System
Pump 1 - SEE
NOTE
Make-up
Water
Supply
ASME
Relief
Valve
ASME
Relief
Valve
ASME
Relief
Valve
System
Temperature
Sensor
T & P
Relief
Valve to
Drain
Cold
Water
Supply
*Tempered
Hot Water
Supply
1
1
1
BOILER
BOILER
BOILER
Содержание GMHB227
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