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Work flow example
Preparations
Prepare schedule of works
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Refrigerant check
• Always check the refrigerant to be used.
• Always use the specified refrigerant.
• Prepare materials/tools matched to refrigerant
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Operation chart preparation
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Start of work
Indoor unit installation
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Refrigerant piping work
• Use copper tube of specified material and thickness
to meet endurance pressure of the pipe. (4.2 MPa)
• Do not use pipe with dust and dirt sticking to it during
piping connection work.
• Always flow dry nitrogen through piping while braz-
ing.
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Drain piping work
↓
Duct work
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Insulation work
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Remote controller installation
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Electrical wiring work Do not connect to the power supply.
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Outdoor unit foundation work
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Outdoor unit installation
2-1. Important items when using refrigerant (R410A) - (06-15) - 2. Piping design
SYSTEM
DESIGN
SYSTEM
DESIGN
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