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Electrical and Gas Leak Checks
Electrical Safety Checks
RISK OF ELECTRIC SHOCK
BEFORE TEST RUN
Gas Leak Checks
DURING TEST RUN
After installation, conrm that all electrical wiring
is installed in accordance with local and nation-
al regulations, and according to the Installation
Manual.
ALL WIRING MUST COMPLY WITH
LOCAL AND NATIONAL ELECTRICAL
CODES, AND MUST BE INSTALLED BY
A LICENSED ELECTRICIAN.
AFTER PERFORMING GAS LEAK CHECKS
After confrming that the all pipe connection points
DO NOT leak, replace the valve cover on the
outside unit.
Check Grounding Work
Measure grounding resistance by visual detection
and with grounding resistance tester. Grounding
resistance must be less than 4.
Note: This may not be required for some
locations in the US.
There are two dierent 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.
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 o the unit
immediately and call a licensed electrician to nd
and resolve the cause of the leakage.
Note: This may not be required for some
locations in the US.
WARNING