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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 0.1 .
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.
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
98
D
B
C
A
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