Check-point of indoor unit
Check-point of outdoor unit
A: Low pressure stop valve
B: High pressure stop valve
C & D: Indoor unit flare nuts
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11. Electrical and Gas Leak Checks
Before Test Run
Only perform test run after you have completed the
following steps:
• Electrical Safety Checks
– Confirm that the unit's
electrical system is safe and operating properly.
• Gas Leak Checks
– Check all flare nut connections
and confirm that the system is not leaking
•
Confirm that gas and liquid (high and low pressure)
valves are fully open
Electrical Safety Checks
After installation, confirm that all electrical wiring is
installed in accordance with local and national regulations,
and according to the Installation Manual.
BEFORE TEST RUN
Check Grounding Work
Measure grounding resistance by visual detection and
with grounding resistance tester. Grounding resistance
must be less than 0.1Ω
.
DURING TEST RUN
Check for Electrical Leakage
During the Test Run, use an electroprobe and multimeter
to perform a comprehensive electrical leakage test.
If electrical leakage is detected, turn off the unit
immediately and call a licensed electrician to find and
resolve the cause of the leakage.
WARNING – RISK OF ELECTRIC
SHOCK
ALL WIRING MUST COMPLY WITH LOCAL AND
NATIONAL ELECTRICAL CODES, AND MUST BE
INSTALLED BY A LICENSED ELECTRICIAN.
Gas Leak Checks
There are two different methods to check for gas leaks.
Soap and Water Method
Using a soft brush, apply soapy water or liquid detergent
to all pipe connection points on the indoor unit and outdoor
unit. The presence of bubbles indicates a leak.
Leak Detector Method
If using leak detector, refer to the device's operation
manual for proper usage instructions.
AFTER PERFORMING GAS LEAK
CHECKS
After confirming that the all pipe connection points DO
NOT leak, replace the valve cover on the outside unit.
