Carrier Creat-ion 38KHET30-708F, Руководство по установке, Страница: 37 / 54

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CONNECTING REFRIGERANT PIPING LINES (Cont.)
16-16 REFRIGERANT LEAK CHECK
After connecting the refrigerant piping lines with both outdoor and indoor units check the joints for
refrigerant leakage by using one of the following methods :
(1) Soapy water method
Apply a soapy water or a liquid detergent on the indoor unit
connections or outdoor unit connections by a soft brush to check for
leakage of the connecting points of the piping.
If bubbles come out, the pipes have leakage and must be repaired.
(2) Refrigerant leak detector method Use the leak detector to check for leakage.
16-17 INSULATING REFRIGERANT PIPING LINES
To conserve energy and prevent wet floors due to
condensation, the gas and liquid piping lines must be well
insulated with a proper insulation material.
The thickness of the insulation should be a minimum of 9 mm.
The insulation you select must have good insulation
characteristic, be easy to use, resist age and not easily absorb
moisture.
Finally wrap the flare couplings and pipes with insulation and
tighten this with tape without exerting too much pressure on
the insulation.
CAUTION
•
After a pipe has been insulated, never try to bend it into
a narrow curve, as this way will cause the pipe to break
or crack.
•
Repair and cover any possible cracks in the insulation
•
Avoid dripping due to insufficient insulation of piping.
When making a bend, the installer cuts insulation
and slides it away from the bend area. Using a tube
bender makes the bend and then the insulation is
replaced gluing it together.
When there is excessive tubing, it must be coiled
horizontally so that the flow of refrigerant is from
the top to bottom of the coil and towards the
outdoor unit.
The excessive tubing must not be coiled
vertically since the vertical coil affects the oil
return to the compressor.
Avoid disconnecting refrigerant piping
connections after they have been tightened to
avoid refrigerant leaks.
Pipe
Insulation
Pipe
Fastening tape
Excessive tubing
must be coiled
horizontally
Insulation
Copper
Piping