MrCool Advantage Series - Evacuation Instructions

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ELECTRICAL & GAS LEAK CHECKS
8
Note on Adding Refrigerant:
Some systems require additional charging depending on pipe lengths. The standard pipe length varies according
to local regulations. For example, in North America, the standard pipe length is 25 ft (7.5 m). In other areas, the
standard pipe length is 16 ft (5 m). The refrigerant should be charged from the service port on the outdoor unit’s
low pressure valve. The additional refrigerant to be charged can be calculated using the following formula:
Additional Refrigerant Per Pipe Length
Connective
Pipe Length
(m)
Air
Purging
Method
Additional Refrigerant
≤ Standard
Pipe Length
Vacuum
Pump
N/A N/A
> Standard
Pipe Length
Vacuum
Pump
Liquid Side: Ø 0.25" (Ø 6.35)
Inverter R410A:
(Pipe Length - Standard Length) x 15 g/m
(Pipe Length - Standard Length) x 0.16 oZ/ft
Fixed-Frequency R410A:
(Pipe Length - Standard Length) x 20 g/m
(Pipe Length - Standard Length) x 0.21 oZ/ft
Liquid Side: Ø 0.375" (Ø 9.52)
Inverter R410A:
(Pipe Length - Standard Length) x 30 g/m
(Pipe Length - Standard Length) x 0.32 oZ/ft
Fixed-Frequency R410A:
(Pipe Length - Standard Length) x 40 g/m
(Pipe Length - Standard Length) x 0.42 oZ/ft
CAUTION
DO NOT mix refrigerant types.
8.1 Electrical Safety Checks
After installation, conrm that all electrical wiring is 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 grounding resistance tester. Grounding resistance
must be less than 4.
NOTE: This may not be required for some locations in the US.
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, 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 - RISK OF ELECTRIC SHOCK
ALL WIRING MUST COMPLY WITH LOCAL AND NATIONAL ELECTRICAL CODES, AND MUST BE INSTALLED
BY A LICENSED ELECTRICIAN.