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heating function, firstly close the by-pass then open it slowly to start the heat pump (the heat pump
can't start running when the water flow is insufficient).
Continue to adjust the by-pass, at the meantime to check the Inlet water temp. & Outlet water temp,
it will be optimum when the difference is around 2 degrees.
Drain out the water in winter for the units without drainage outlet in heat exchanger
Turn off the heat pump and be sure that it disconnected power
Turn off the water pump
- Close the valves 1 and 2
- Open the valve 4
Allow water to drain out over a long period until heat pump is fully drained.
NOTE: It need to close the valve 4 before turn on the heat pump.
4.5. The fitting of accessories
A
A
A
B
A
B - C
B
C
A
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