Dunkirk DXL Series Installation, Operation & Maintenance Manual page 17

Figure 4-7 - Multi Zone System With Zone Valves And DHW Priority (With Zone Valve)
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 " (305 mm) Recommended distance.
Note
1
Do not exceed 12".
Refer to pump manufacturer
literature for proper pump sizing.
4 - CONNECTING SUPPLY AND RETURN PIPING
BACK FLOW VALVE
Tank
Sensor
Back Flow Valve
PIPING LEGEND:
Supply
Tempered
Cold
T & P Relief
Water
Valve to
Supply
Drain
ASME
Relief
Valve
17
* Hot
Water
1
PN 240012787 Rev. C [11/15/2020]