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FIGURE 5-5 - Primary/Secondary, Zoned, WITH ZONE PUMPS, (Optional) Indirect Tank
Optional
Indirect
DHW Tank
DHW Pump
CH /System
Pump
Make-up
Water
Supply
* Manufacturer requires all domestic
Note
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.
12" (305mm) Maximum
Note
1
Separation required if Labor
Saver is NOT used.
Use external pump relay or Argo Zone
Note
Control to interface system pump to boiler.
5 - HYDRONIC PIPING
Tank
S
Sensor
T & P Relief
Valve to
* Hot
Water
Supply
Tempered
Cold
Water
Drain
Supply
ASME
Relief
Valve
Refer to pump manufacturer
literature for proper pump sizing.
16
BOILER
1
1
PN 240011662 Rev. K [01/31/2020]
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Troubleshooting
