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10. Installation
Outdoor unit
Ball valve
(used as cleaning hole)
Cleaning device
Auto air discharge valve
Strainer for
pump
Strainer for outdoor unit
Water inlet pipe
Water outlet pipe
Plate
type heat
exchanger
Flushing pipe
(Install it when cleaning)
Ball valve
(used as cleaning hole)
Ground heat
or closed
circuit
cooling
tower
12. Before trial operation, connect the cleaning pipes installed on inlet and outlet as shown in above illustration.
Then, take appropriate measures (such as blind flange etc) to stop the circulation water from entering the
outdoor unit plate type heat exchanger, and use circulating pump to remove foreign substance within the water
pipes and clean the strainer. When foreign substances accumulates on outdoor unit plate type heat exchanger, it
may break the heat exchanger or cause problem to it.
13. For legal facilities, install digital sensor and flow meter on the water pipe for monitoring.
•
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. Check the flow of circulation with flow switch or other devices.
CAUTION