Lennox HP22-311 - Charging Procedures

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IMPORTANT - Compliant scroll compressors (as
with any refrigerant compressor) should never be
used to evacuate a refrigeration or air conditioning
system.
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WARNING - DEEP VACUUM OPERATION CAN
CAUSE INTERNAL FUSITE ARCING RESULTING IN A
DAMAGED OR FAILED COMPRESSOR. THIS TYPE
OF DAMAGE WILL RESULT IN DENIAL OF WARRANĆ
TY CLAIMS.
C-Charging
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TABLE 6
Model Refrigerant Charge R-22
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BEFORE CHARGING
(steps 1 through 4)
NOTE - The following procedures require accurate readĆ
ings of ambient (outdoor) temperature, liquid temperaĆ
ture and liquid pressure for proper charging. Use a therĆ
mometer with accuracy of +
2_F and a pressure gauge
with accuracy of +5PSIG.
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TABLE 7
Model
Liquid Temp Minus AmĆ
bient Temp. (_F)
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APPROACH METHOD - EXPANSION VALVE SYSTEMS
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