Installation Guide

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Refrigerant Piping Connection
AFTER PERFORMING GAS LEAK CHECKS
After confirming that the all pipe connection
points DO NOT leak, replace the valve cover
on the outside unit.
Electrical and Gas Leak Checks
8
Gas Leak Checks
WARNING – RISK OF
ELECTRIC SHOCK
ALL WIRING MUST COMPLY WITH LOCAL
LAND NATIONAL ELECTRICAL CODES,
AND MUST BE INSTALLED BY A LICENSED
ELECTRICIAN.
Electrical Safety Checks
BEFORE TEST RUN
DURING TEST RUN
After installation, confirm that all electrical wiring is
installed in accordance with local and national regula-
tions, and according to the Installation Manual.
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.
Check for Electrical Leakage
During the Test Run, use an electroprobe and multime-
ter to perform a comprehensive electrical leakage test.
If electrical leakage is detected, turn off the unit immedi-
ately and call a licensed electrician to find and resolve
the cause of the leakage.
Note: This may not be required for some locations in
the US.
There are two different methods to check for gaseous
leaks.
Soap and Water Method
Using a soft brush, apply soapy water or liquid deter-
gent 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.
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Electrical and Gas Leak Checks