17
T & P Relief
Valve to
Drain
Cold
Water
Supply
Optional
Indirect
DHW Tank
Make-up
Water
Supply
Tank
Sensor
CH /System
Pump
ASME
Relief
Valve
1
DHW Pump
* Hot
Water
Supply
Tempered
TO SYST
EM
FROM SYST
EM
Drain
Valve
12” (305mm) Recommended
distance. Do not exceed 12".
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
Refer to pump manufacturer
literature for proper pump sizing.
1
4 - CONNECTING SUPPLY AND RETURN PIPING
PIPING LEGEND:
Figure 4-7 - Multi Zone System With Zone Valves And D
HW
Priority (With Zone Valve)
Back Flow Valve
PN 240012809, Rev. C [11/15/2020]