Heat Pump Unit Water Piping - Sanden GAUS-315EQTD Installation Manual

Heat Pump Unit Water piping

 Connect the heat pump unit COLD supply to the tank unit fitting marked Cold Supply. – ½"
NPT Connection (Certain early units may use ½" BSP connections).
 Connect the heat pump unit HOT return to the tank unit fitting marked Hot Return – ½"
NPT Connection (Certain early units may use ½" BSP connections).

Connect the mains water supply to the lower fitting on the tank unit marked Cold Water
Inlet.

Connect the hot water supply pipe to the top of the tank unit marked Hot Water Outlet.

Install the supplied PR valve to the fitting on the tank unit marked PR valve, pipe from PR
valve directly to a Building drain, do not install any shut off valve between PR valve and
Building drain.

Run water through the pipe(s) to remove any debris inside before connecting the pipe(s).

After all the piping connections are completed, run water through the system.

Close the shut off valves (four places) and detach the filter on the cold supply connector of
the heat pump unit to confirm there is no debris blocking the filter. Clean the filter if any
debris is found.

Remove the air from the system according to the instructions below on Page 16.

Make sure all the necessary devices are mounted to the pipes as shown in diagram.
If the heat pump unit piping is kinked or clogged or the air inside was not removed during
the test operation, temperature of the supplied hot water may become inconsistent.
Sanden Heat Pump – Installation Manual
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