●The water quality should be analyzed before operating the unit: PH value, conductivity, Chloride ion
concentration and sulphate ion concentration should be checked.
●Acceptable water quality shown below:
● Suggested filter mesh = 40.
6.1 Selection of the water pump
●The circulation pump is required for the system to operate, there is a terminal connection for the
pump (single phase)
NOTE
For single-phase pumps, please check the wiring diagram.
●Head of circulation pump = height difference between water level and main unit + total pipeline
resistance (determined by the hydraulic calculation) + pressure loss of main unit (see nameplate on
heat pump).
NOTE
Multiple units are installed in parallel place more demand on the water pump requirement.
6.2 Water pipe selection
●The selection of the water pipe should be based on the actual system specifications
●The flow switch can be installed horizontally or vertically. If installed the direction of the water flow
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