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Maintaining contamination
Foreign substances included in chilled/heating water by
small particles pass strainers, and they may be stuck or
stacked inside plate type heat exchanger. Some parts of
water pipes inside the plate type heat exchanger, and
the performance may decrease or it may freeze and get
damage. Therefore, clean the plate type heat exchanger
periodically.
Turbidity is a standard for water pollution level, and
standard water pollution set by Corrosion Prevention
Association is under turbidity 4. If the turbidity is high
or foreign substance is flew in too much, clean the
plate type heat exchanger periodically and maintain
the turbidity under 4. If it is over 4, clean the product
in about 1 year period since the first operation of the
product.
NOTE
Refer to page 68 for water maintenance standard
table.
Solution for water level decrease
When tank or thermal storage is installed open, select
pump which can acquire required water amount
concerning head loss other than pipe resistance.
CAUTION
The product should be operated for 3 minute after
it is stopped to protect water side heat exchanger
(plate type heat exchanger) from freezing.
NOTE
Expansion vessel is to buffer expanded water and
also to purge air in water pipes. The capacity of
expansion vessel should be 2 ~ 2.5 times larger
than amount of water expansion or 4 ~ 5 % of total
amount of circulating water.
Freeze protection operation
Forced pump operation may be operated periodically
to protect water side heat exchanger (plate type heat
exchanger) from freezing in winter time or night time
when the pump is stopped. Be careful not to be injured.
Water flow rate range
Refer to the table to maintain minimum amount of
circulating water. If circulating amount is not enough,
the product will not only operate in best performance
but also affect the life of the product. Keep the amount
above the minimum level.
Model name
AG042KSV Series
AG056KSV Series
AG070KSV Series
Flow rate range (LPM)
Min.
Max.
60
240
80
320
93
400
English
25
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