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Details specific precautions for new HFC refrigerant (R410A) systems, highlighting its characteristics and installation requirements.
Provides critical safety warnings regarding installation, electrical work, and handling to prevent hazards like electric shock or fire.
Procedure for performing a 24-hour tightness test using nitrogen on both gas and liquid sides of the refrigerant pipes.
Process for vacuumizing the system from both gas and liquid sides after the tightness test.
Guidance on calculating and marking the refrigerant adding amount, pipe diameters, and height differences.
Instructions for selecting power supply capacity, wire diameters, and avoiding entanglement of power and signal wires.
Guidance on performing trial running after preheating the outdoor unit to avoid system damage.
Lists unsuitable locations for outdoor unit installation to prevent malfunctions and ensure proper operation.
Instructions for safely moving and installing the outdoor unit, including lifting, fastening, and foundation requirements.
Guidance on connecting pipes, emphasizing nitrogen use for welding and avoiding components to prevent oxidation.
Instructions for performing leak detection using soap water or a leak detector on all joints.
Procedure for performing an airtight test using pressurized nitrogen to detect leaks.
Guidance on performing air purge using a vacuum pump to create a vacuum in the system.
Calculates added refrigerant based on diameter and length of liquid side pipe, and specifies R410A refrigerant.
Cautions regarding disconnection devices and indoor/outdoor unit signal wire connections.
Cautions about connecting refrigerant piping, signal wires, and power cords to prevent interference and ensure proper system integration.
Instructions for connecting indoor/outdoor unit signal wires, emphasizing shielded cables and grounding methods.
Cautions for test running, including pre-operation time, valve status, and avoiding forced running.
Provides information on the fluorinated gas used (R410A), its GWP, and factory charge quantities.
General warning about installation compliance with national wiring regulations to prevent death.
Explains protection equipment that stops the AC during compulsive running, listing conditions like blocked inlets/outlets.
Lists common malfunctions and their causes, advising to stop operation and contact the dealer for specific issues.
Lists common malfunctions and their causes, advising to stop operation and contact the dealer for specific issues.
Warning about professional installation to prevent leaks, electric shock, or fire, and avoiding direct heat sources.
Lists unsuitable locations for outdoor unit installation to prevent malfunctions and ensure proper operation.
Details how to cut and flare refrigerant pipes, and fit them to connecting nuts according to specifications.
Procedure for performing an airtight test using pressurized nitrogen to detect leaks.
Caution regarding the use of pressurized nitrogen, handling of valves, and avoiding hazardous gases during the airtight test.
Instructions for inspecting joints for leaks using a leak detector or suds.
General cautions for electrical wiring, emphasizing correct connection, secure terminals, and grounding.
Checklist of essential points to verify before performing test running, covering installation, wiring, and pressure.
Caution regarding unit restart behavior after power loss or shutdown, involving a compressor delay.
Explains protection equipment that stops the AC during compulsive running, listing conditions like blocked inlets/outlets.
Caution regarding protection equipment activation, advising to shut down and restart after resolving the issue.
Table listing error codes, malfunction/protection types, and remarks for troubleshooting.
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General