17
5 - HYDRONIC PIPING
FIGURE 5-6 - Multiple Boilers with Common Primary Secondary, Zone Valves and (Optional) Indirect
UP TO 6 BOILERS
# Boilers on
Pipe Branch
Pipe
Size
2
2
3
2½
4
3
5
3
6
4
7
4
8
4
1
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 Argo Zone
Control to interface system pump to boiler.
12” (305mm) Maximum
Separation required if Labor
Saver is
NOT
used.
Note
Refer to pump manufacturer
literature for proper pump sizing.
BOILER
ASME
Relief
Valve
ASME
Relief
Valve
ASME
Relief
Valve
System
Temperature
Sensor
S
Optional
Indirect
DHW Tank
Tank
Sensor
CH/System
Pump
T & P
Relief
Valve to
Drain
*Tempered
Hot Water
Supply
Make-up
Water
Supply
1
Cold Water
Supply
BOILER
BOILER
DHW Pump
1
1
1
PN 240011662 Rev. H [04/30/2019]