Samsung AM160FNBDEH Installation Manual page 25

Water pipe installation
Circle (O) marks in the chart show the factor relevant to corrosion or water scale.
When the water temperature is over 40˚C, steels without protective coating may corrode when expose to water.
NOTE
Applying corrosion prevention material or degassing can be effective measure to prevent corrosion.
For the cooling water and the make-up water, used under closed circuit water system with closed circuit cooling
tower, should satisfy the standard shown in above table.
Supplied water or make-up water should be tap water, industrial water or groundwater. Purified water,
neutralized water and softened water should not be supplied.
15 items in the above table is a typical factor for corrosion and/or water scale.
When water pipe circuit freezes, it will cause breakage on the plate type heat exchanger. Therefore appropriate
preventive measure must be taken according to the situation.
- Drain remaining water in the water pipe
- Constantly operate the water pump to circulate the water within the water pipe
- Install a self-regulating heat cable on the water pipe
Open the valve of the water pipe connected to the outdoor unit after flushing (cleaning foreign substances in
water pipe) is completed.
Check that air is vented from the water pipe and circulation amount is secured before opening the service valve
on the refrigerant side of the outdoor unit.
When circulating water stops during outdoor nit operation, it may cause breakage on plate type heat exchanger.
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