16
Installation Procedure
English
Installation Pr
oc
edur
e
CAUTION
• Be sure to install a 2-way electric valve on the water pipe
inlet of the fan coil unit.
Failure to do so may cause condensation and product
malfunction.
• Attach a 40 mesh strainer to the inlet piping
(Installation site area)
• If there is no strainer installed, foreign objects may
enter the pipe, causing malfunction and performance
degradation to the 2-way electric valve, condensation,
or water leakage, etc.
• When the temperature of intake water is higher than
ߧߦঐࡡϩ˵ʪΧθͱϩʪʀϩ̈ͱ͝ʀͱ͝ϩθͱ̷ͱ˙ϩ˵ʪΧθͱʒЇʀϩ͔ɇцɵʪ
activated.
•
Ã˙ϩ˵ʪͱЇϩϑ̈ʒʪϩʪ͔ΧʪθɇϩЇθʪ̈ϑ̷ͱиʪθϩ˵ɇ͝ߡঐʒЇθ̈͝˝
winter, the inside of the heat exchanger may freeze
and burst. To prevent this, operate a water pump and
operate the product to open the 2-way electric valve.
• When the product is not used for a long period of time
in winter, drain all the water from the heat exchanger
and the entire water piping system.
• If both the room temperature and the piping
ϩʪ͔ΧʪθɇϩЇθʪɇθʪߦঐͱθ̷ʪϑϑࡡϩ˵ʪߣࣗиɇцʪ̷ʪʀϩθ̈ʀЭɇ̷Эʪ
automatically opens to prevent freezing and bursting.
• Use frost preventive additives to prevent the
circulating water from freezing in winter.
• Check if the rated flow rate is being supplied.
Low flow rates may cause performance degradation or
product malfunction.
4
Wind Teflon tape (10 to 15 times) around the threads of
the water pipe inlet/outlet Flexible tube of the fan coil
unit in the thread direction.
CAUTION
• When connecting the pipes, tighten sufficiently with a
monkey wrench and a torque wrench as shown in the
figure above. Failure to do so may cause water leakage.
• When operating the product for the first time or
restarting it after a long period of stoppage, open the
air vent valve of the heat exchanger and use a tube to
receive water so that the air inside the pipe and coil is
sufficiently removed, and then close the valve.
5
Manage water quality in accordance with the following
water quality standards for refrigeration equipment:
CAUTION
• If water quality is not managed in accordance with
the water quality standards, corrosion and scales may
develop, which may shorten the life of the product and
cause performance degradation and lead to a serious
product malfunction.
Item
Cold water Corrosion Scales
Reference
value
ť²࣍ߣߦঐ࣎
6.5-8.0
O
-
Conductivity
࣍ߣߦঐࡡڋƊࢥʀ͔࣎
200 or less
O
-
Alkalinity (PPM)
50 or less
-
O
Hardness (PPM)
50 or less
-
O
Chlorine ion (PPM) 50 or less
O
-
Sulfate ion (PPM) 50 or less
O
-
Iron (PPM)
0.3 or less
O
-
Sulfur ion (PPM)
Not
detected
O
-
Ammonium ion
(PPM)
0.2 or less
O
-
Silica (PPM)
30 or less
-
O
6
Check the rated flow rate of cold / hot water and the
pressure loss inside the heat exchanger.
Summary of Contents for AG026TN1DKH/EU
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