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Piping installation
Installer reference guide
35
RXF50~71D5V1B
R32 split series
4P519439-18T – 2022.06
7.2.1 About connecting the refrigerant piping
Before connecting the refrigerant piping
Make sure the outdoor and indoor unit are mounted.
Typical workflow
Connecting the refrigerant piping involves:
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Connecting the refrigerant piping to the indoor unit
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Connecting the refrigerant piping to the outdoor unit
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Insulating the refrigerant piping
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Keeping in mind the guidelines for:
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Pipe bending
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Flaring pipe ends
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Using the stop valves
7.2.2 Precautions when connecting the refrigerant piping
INFORMATION
Also read the precautions and requirements in the following chapters:
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"2 General safety precautions"
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"7.1 Preparing refrigerant piping"
DANGER: RISK OF BURNING/SCALDING
NOTICE
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Use the flare nut fixed to the unit.
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To prevent gas leakage, apply refrigeration oil ONLY to the inside of the flare. Use
refrigeration oil for R32 (FW68DA).
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Do NOT reuse joints.
NOTICE
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Do NOT use mineral oil on flared part.
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Do NOT reuse piping from previous installations.
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NEVER install a drier to this R32 unit to guarantee its lifetime. The drying material
may dissolve and damage the system.
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