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ENGLISH
Water supply system test run
Before executing the test run for the product, you must first test the
heat source water system.
The test run for the product must be executed after checking the flow
rate and temperature of the heat source water supplied.
Equipment design
Execute the
product test run
Water pipe system
installation
Water supply pipe
and product connection
Water supply
system test run
Judging whether there
is any problem with
the water supply
Design the system including cooling tower, boiler, pump etc.
- Check the equipment capacity (Water volume, temperature
control range).
Connect the water pipe to the inlet/outlet of the product so
that the water can be supplied to the product.
Execute water supply system test run
- The product does not operate but the pump and water
supply equipment will operate to flow the Heat source
water to the heat exchanger on the product side.
- Flow the water to all water piping system to clean any alien
particles inside the pipes and execute an air purge to
remove an air within the pipes to make the water supply
smoother.
- Clean all the strainers of water pipe including around
outdoor units.
Execute the test of water supply system without operating
the product.
- Check whether outdoor unit inlet/outlet flow rate complies
to the product specification. Standard Water volume is
96 LPM based on 10 HP and 196 LPM based on 20 HP.
- Check the water supply temperature. whether is OK
After checking the normal condition of the water supply,
execute the test run of the product.
To prevent the freezing of the heat exchanger when the
refrigerant is discharged with the water supply blocked,
discharge the refrigerant after draining out around the
outdoor unit.
Install the water pipe
WARNING
!
• Always check whether the water supply is flowing smoothly
before the test run. (If sufficient amount of water is not
flowing, it can burn the product.)
• During the initial test run after installing the product, leaving
the product for more than 3 days or after replacing the
compressor, power must be connected 6 hours prior to the
operation to heat the compressor heater. (If the product is not
heated sufficiently, it can burn the product.)
How to Cope with Abnormal Test Run
Item
Phenomenon
Cause Checkpoint and resolution
Whether
heat
water is
supplied
CH24
Heat water not
supplied or flow
rate is insufficient
Check whether the heat source water
supply pump is operating.
Check whether the heat source water
supply pipe is clogged.
(Clean strainer, valve locked, valve
issue, air trapped etc.)
CH32
Heat water not
supplied or flow
rate is insufficient
Check whether heat source water
supply pump is operating.
Check whether the heat source water
supply pipe is clogged.
(Clean strainer, valve locked, valve
issue, air trapped etc.)
CH34
Heat water not
supplied or flow
rate is insufficient
(During Cooling)
Check whether heat source water
supply pump is operating.
Check whether the heat source water
supply pipe is clogged.
(Clean strainer, valve locked, valve
issue, air trapped etc.)
CH180
Heat water not
supplied or flow
rate is insufficient
(During heating)
Check whether heat source water
supply pump is operating.
Check whether the heat source water
supply pipe is clogged.
(Clean strainer, valve locked, valve
issue, air trapped etc.)
CH189
When connecting
the flow switch,
heat-sourced
water doesn’t
flow or the
amount of its flow
lacks due to the
checked error
related to
heat-sourced
water.
Check whether the heat source water
supply pump is operating.
Check whether the heat source water
supply pipe is clogged.
(Clean strainer, valve locked, valve
issue, air trapped etc.)
Check whether the flow switch is
normal condition.
(Flow switch problem, arbitrary
control, disconnection etc.)
h When CH24 or CH180 error occurs during the test operation of the
heater, the inside of the panel heat exchanger may be partially
frozen and therefore, be sure to get rid of its cause and then,
re-operate the device.
(The root cause of partial freezing: The lack of flow of heat-sourced
water, suspension of water, lack of cooling medium, infiltration of
foreign substance inside of panel heat exchanger)
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