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Refrigerant pipe installation
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For pipes larger than Ø 19.05, drawn type (C1220T-1/2H or C1220T-H) type copper pipe must be
used. If a annealed type (C1220T-O) copper pipe is used, pipe may break due to its low pressure
resistance and cause personal injury.
CAUTION
Keeping refrigerant pipe
To prevent foreign materials or water from entering the pipe, storing method and sealing method (especially
during installation)is very important. Apply correct sealing method depending on the environment.
Exposure place
Exposure time
Sealing type
Outdoor
Longer than one month
Pipe pinch
Shorter than one month
Taping
Indoor
-
Taping
Refrigerant pipe welding and safety information
Important information for refrigerant pipe work
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Make sure there is no moisture inside the pipe.
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Make sure there are no foreign substances and impurities in the pipe.
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Make sure there is no leakage.
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Make sure to follow the instruction when welding or storing the pipe.
CAUTION
Ę̈ϩθͱ˝ʪ͝ѤЇϑ˵̈͝˝иʪ̷ʒ̈͝˝
ॷ Ǯ˵ʪ͝иʪ̷ʒ̈͝˝ϩ˵ʪθʪ˙θ̈˝ʪθɇ͝ϩΧ̈ΧʪϑࡥѤЇϑ˵ϩ˵ʪ͔ӥϩ˵̈͝ϩθͱ˝ʪ͝˝ɇϑɇϑϑ˵ͱӥ͝͝ϩ˵ʪΧ̈ʀϩЇθʪ
ॷ Ã˙цͱЇʒͱ͝ͱϩΧʪθ˙ͱθ͔̈͝ϩθͱ˝ʪ͝ѤЇϑ˵̈͝˝и˵ʪ͝иʪ̷ʒ̈͝˝ϩ˵ʪΧ̈Χʪϑࡥͱӱʒʪ͔ɇц˙ͱθ͔̈͝ϑ̈ʒʪϩ˵ʪΧ̈ΧʪÃϩʀɇ͝
cause the damage of the important parts such as compressor and valves etc.
ॷ ʒ̟Їϑϩϩ˵ʪѤͱиθɇϩʪͱ˙ϩ˵ʪ̈͝ϩθͱ˝ʪ͝ѤЇϑ˵̈͝˝ӥϩ˵ɇΧθʪϑϑЇθʪθʪ˝Ї̷ɇϩͱθϩͱ͔ɇ̈͝ϩɇ̈͝ߢߢߧ͔
3
/h or less.
Welding part
Nitrogen gas
Ø 6.35 copper pipe
Stop valve
Taping
High pressure hose
Pressure regulator
Nitr
ogen gas
Flowmeter
Direction of the pipe when welding
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Direction of the pipe should be headed downward or in a sideways when welding.
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Avoid welding the pipe with pipe direction heading upward.
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When you test gas leakage after welding the pipes, use a designated solution for gas leakage
detection. If you use the detection solution that includes sulfuric ingredient, it may cause corrosion
to the pipes.
CAUTION
