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ELECTRICAL AND GAS LEAK CHECKS
WARNING – RISK OF ELECTRICAL SHOCK
ALL WIRING MUST BE INSTALLED BY A LICENSED ELECTRICIAN AND COMPLY WITH LOCAL,
STATE, AND NATIONAL ELECTRICAL CODES.
Electrical Safety Checks
After installation is complete, con rm that all
electrical wiring has been 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 a grounding resistance tester. Grounding
resistance must be less than 0.1 .
NOTE: This may not be required for some
locations in North America.
DURING TEST RUN
Check for Electrical Leakage
During the Test Run, use an electro probe and
multimeter to perform a comprehensive electrical
leakage test.
IF ELECTRICAL LEAKAGE IS DETECTED
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 North America.
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Gas Leak Checks
gaseous leaks. Use Fig. 8.1 below as a guide for
the critical points to check for leaks.
Soap and Water Method
Using a soft brush or spray bottle, apply a soapy
water solution to all of the pipe connection points
of the indoor and outdoor units, watching to see
if any bubbles form. The presence of bubbles
indicates there is a leak.
Leak Detector Method
If using a leak detector, refer to the device's
operation/instruction manual for proper usage
instructions.
After performing GAS leak checks
After con rming that all of the refrigerant
pipe connections points DO NOT leak, replace
the valve cover on the outside unit and wrap
and insulate the piping connections of the
indoor 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 are nuts
32
D
B
C
A
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