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• The maximum operation water pressure of the
product is 1.0 MPa.
• The water strainer is not included in the product.
You must install 50 Mesh stainless strainer (field
supply). If the strainer is not installed, it may cause
breakdown of the product.
• The strainer needs periodical maintenance. Work on
pipes considering space for maintenance.
• Companion flange (field supply) should be made of
SUS304, DIN PN10 standardized product.
Water pipe installation
Installation precautions
f Heat source water with high level of foreign
substances can cause corrosion or creation of water
scale on plate type heat exchanger and pipe, so
select installation place where the heat source water
is qualified according to water maintenance standard
for air conditioning equipment. (Refer to page 68 for
water maintenance standard table.)
f Install strainer (field supply) on heat source water
inlet.
f If sand, dust, corroded particles flow into water
system, heat exchanger may get damaged because of
sedimentation of metallic particles and blocking the
heat exchanger. (Refer to page 11 for specification of
strainer.)
f Be careful not to change inlet/outlet of chilled/
heating water.
f For normal operation, supply chilled/heating water
regularly to keep operation conditions stable.
f Install valves at inlet/outlet of water pipes for
services.
f Install temperature gauge and pressure gauge at
inlet/outlet of water pipes to check operation status.
f Insulate pipes to prevent thermal loss of water pipes
and freezing of pipe surface.
DB68-05916A-09_IM_DVM Chiller Outdoor_EU_EN_.indd 23
f When insulation is not done thoroughly, you will
waste energy caused by thermal loss and may get
property damage during cold seasons when water
pipe freezes. If the product is stopped at night or not
operated for long time during winter time, solution
for water pipe freezing may be necessary. Freezing
may cause product damage, so take appropriate
countermeasures such as pump operation, water
drainage, or heating by heater depending on the
situation.
f Install flexible joints at water pipes to prevent
vibrations.
f Support water pipes with holders so that too much
weight is not loaded on pipes.
f Install valves to drain water when the product is not
used for a long time or outdoor temperature is below
freezing point. Use drain valve to drain water left in
plate type heat exchanger and inside the product.
f Install pipe returning to the pump inside the water
to prevent bubbles when thermal storage or tank is
installed. If dissolved oxygen is increased, corrosion
on water side heat exchanger and pipe can be faster.
23
English
2022-05-02 오전 9:00:00
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