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Using Vacuum Pump
(con’t):
5. Evacuate using either deep vacuum or triple evacuation method.
6. After evacuation is complete, fully close the low side of manifold gauge and stop
operation of vacuum pump.
7. Disconnect charge hose from charge connection of the low side service valve.
8. Fully open service valves B and A.
9. Securely tighten caps of service valves.
Additional Charge
TESTING AND INSPECTION
33
Unit Size
Total Piping Length ft (m)
18,000 33 (10)
24,000 98 (30)
30,000 131 (40)
36,000 131 (40)
42,000 131 (40)
The outdoor unit is shipped with a full charge of R-410A refrigerant
for the following total piping lengths:
For pipe runs over this limit, add 0.2 oz/ft (20 g/m) of additional refrigerant.
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