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Follow the manufacturer's instruction manual for the type of bond, amount to be
applied, curing time, and other specifications. If any bond or flux has entered the tank
unit and the hot water has a chemical/acrid smell take the following countermeasures:
a) After heating the water in the tank unit, drain it and clean inside the tank unit. Fill the
tank unit with 100 litres of water and exchange twice.
b) Clean or change the filter.
c) Fill up the tank unit.
d) Drain water from the relief valve for one to two minutes.
e) Run water from all the hot water supply taps in the house for about ten minutes to
clean inside the pipes.
Heat pump unit piping
Connect the heat pump unit cold supply to the tank unit fitting marked Cold supply.
Connect the heat pump unit hot return to the tank unit fitting marked Hot return.
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 PTR valve to the fitting on the tank unit marked PTR valve.
Pass water through the pipe to remove any dust inside before connecting the pipe.
After all the piping connections are completed, pass water through the system.
Close the stop valves (four places) and detach the filter on the cold supply connector
of the heat pump unit to confirm there is no object that blocks the filter. Clean the filter
if any blockage.
Remove the air from the system according to the instructions on page 9.
Make sure all the necessary devices are mounted to the pipes as shown in diagram. If
the heat pump unit piping is crushed or clogged or the air inside was not removed
during the test operation, the temperature of the supplied hot water may become
inconsistent.
Figure 6: System piping
Sanden Heat Pump – Installation Manual
Page 8 of 32
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