33Installing the System Piping
3.5.5 System Application - DHW System with Indirect Tank (Primary/Secondary Piping)
Make-up Water
Backflow preventer
Pressure reducing valve
DHW Outlet
DHW Inlet
Indirect Tank
Anti-scald mixing valve
System Pump
Boiler Pump
DHW Pump
Return filter
Expansion Tank
Air Separator
Note
●
System application drawings are intended to explain the system piping concept only.
●
Install a filter in the system return to remove foreign objects from the system. Foreign objects inside the system may result in
abnormal system operation.
●
Refer to “3.3 Filling the System” on page 27 for make-up water connections and refer to the requirements of your local codes
to ensure compliance.
●
Use a pump with an integral check valve or install a check valve at the pump outlet.
●
Refer to the “3.6.10 Wiring Diagram - DHW System with Indirect Tank” on page 43 for wiring connections.
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