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FINAL CHECKS
CAUTION
Failure to perform the test run may result in unit damage, property damage, or
personal injury.
BEFORE THE TEST RUN
A test run must be performed after the entire system has been completely installed.
Confirm the following points before performing the test:
• Indoor and outdoor units are properly installed.
• Piping and wiring are properly connected.
• No obstacles near the inlet and outlet of the unit that might cause poor performance or
product malfunction.
• Drainage system is unimpeded and draining to a safe location.
• Insulation of piping and duct is properly installed.
• Grounding wires are properly connected.
• Length of the piping and additional refrigerant capacity have been recorded.
• Power voltage is the correct voltage for the air handler.
• Electrical Safety Checks - Confirm that the unit's electrical system is connected and
operating correctly.
• Gas Leak Check - Check all flare nut connections and confirm the system is not leaking.
• Confirm that the low and high pressure valves are fully open.
• Check grounding work by measuring the grounding resistance by visual detection and with a
multimeter. The grounding resistance must be less than 0.1 Ω.
GAS LEAK CHECK
There are two methods to check for gas leaks:
1. Soap and Water Method - Using a soft brush, apply a soapy water or liquid detergent to all
pipe connection points on the indoor and outdoor unit. The presence of bubbles indicates a
leak.
2. Leak Detector Method - If using a leak detector, refer to the device's operation manual for
proper usage instructions.
ELECTRICAL SAFETY CHECKS
After installation, confirm that all electrical wiring is installed in accordance with local and national
regulations, and according to this installation manual.
DURING TEST RUN
Using your multimeter, verify the voltage of the main power entering the system. If the main power
voltage is greater than ±10% of the name plate voltage, turn off the unit and immediately call a
licensed electrician to find and resolve the cause.
WARNING
RISK OF ELECTRICAL SHOCK - All wiring must comply with local and national
electrical codes, and must be installed by a licensed electrician.
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