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All installations and services must be performed by qualified personnel.
13
75’-100’ TOTAL LINE LENGTH
MODEL SUCTION LINE LIQUID LINE
1224 & 1230 1” 1/2”
1236 & 1242 1-1/8” 5/8”
NOTES:
For line lengths over 25’ adjust charge accordingly per foot of variation from chart.
.65 oz. per foot for 3/8” and 3/4” line set
.674 oz. per foot for 3/8” and 7/8” line set
.694 oz. per foot for 1/2” and 7/8” line set
.72 oz. per foot for 1/2” and 1” line set
.76 oz. per foot for 5/8” and 1-1/8” line set
These charges are to be used in conjunction with a superheat measurement for best performance.
TUBING INSTALLATION
The compressor oil is constantly pumped through the refrigerant lines in normal operation of an
air conditioning system. To ensure proper lubrication of the compressor by avoiding oil
accumulation at undesirable points in the system, follow the guidelines listed below:
1. No traps in the suction line are necessary if the outdoor condensing unit is level with the
indoor evaporator coil or the indoor evaporator coil is 4 feet or less lower then the outdoor
condensing unit. Any horizontal runs of suction line should have minimum 1/2" pitch for
every 10 feet of line towards the outdoor condensing unit. See Figure F below.