12
Electrical and gas leak checks
12.1 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
12.2 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.
12.2.1 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.
C
Note: This may not be required for
some locations in North America.
52 / 324 EN
12.2.2 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.
C
Note: This may not be required for
some locations in North America.
Warning - risk of electric
shock
All wiring must comply
A
with local and national
electrical codes, and must
be installed by a licensed
electrician.
Split type air conditioner / User Manual