Installation and Commissioning Guide - MultiElite 2 Split System
Doc. No. 9590-5009
Ver. 1 211221
34
Installation and Commissioning Guide
Multi Split System
13.02. Safety And Leakage Check
Electrical Safety Check
Perform the electric safe check after completing installation.
1. Insulated resistance
The insulated resistance must be more than 2MΩ.
2. Grounding work
After finishing grounding work, measure the grounding resistance by visual detection and grounding resistance
tester. Make sure the grounding resistance is less than 4Ω.
3. Electrical leakage check (performing during test running)
During test operation after finishing installation, the service technician can use the multimeter to perform the
electrical leakage check. Turn off the unit immediately, rectify before continuing.
Gas Leak Check
Proper pressure test with dry nitrogen should be performed, prior to air evacuation. Perform leak detection test with
electronic leak detector after letting refrigerant into pipework
NOTE
After confirming that the all pipe connection points
DO NOT
leak, replace the valve cover on the outside unit.
A
ir E
vacu
at
io
n
Safety And Leakage Check
NOTE:
NOTES
• The illustration is for explanation purpose only.
• The actual order of A, B, C, D, and E on the machine may be slightly different from the unit you purchased but the
general shape will remain the same. The actual shape shall prevail.
• A, B,C,D are points for MRC-100CS-4 Unit.
• A, B,C,D, and E are points for the MRC-120CS-5 Unit.
