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CONNECTING REFRIGERANT PIPING LINES (Cont.)
15-3 LENGTHS AND DIAMETERS OF REFRIGERANT PIPING LINES FOR ALL MODELS
S L
5/8” 3/8”
S = Suction line diameter.
L = Liquid line diameter.
15.4 REFRIGERANT CHARGE.
• For refrigerant piping lines of length more than 3 meters, add 25 grams of refrigerant per
extra meter from 3 meters refrigerant piping lines:
Example 1 = For 8 meter lines, refrigerant added = (8-3) x 25 = 125 grams.
Example 2 = For 12 meter lines, refrigerant added = (12-3) x 25 = 225 grams.
Note:
(1) The outdoor unit is factory supplied with refrigerant charge for use with refrigerant piping lines
of length 3 meters and with added 100 grams for air and moisture purge from the system.
(2) Charge the refrigerant accurately.
(3) Refrigerant overcharge may cause a serious trouble of compressor.
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