28
CONNECTING REFRIGERANT PIPING LINES (Cont.)
16.5 DIAMETERS AND LENGTHS OF REFRIGERANT PIPING LINES
Model
Gas line
diameter
Liquid line
diameter
Max. Line
Length (MT)
Size 12K 3/8” 1/4” 10
Size 18K 1/2” 1/4” 20
Size 24K 5/8” 3/8” 20
16.6 REFRIGERANT CHARGE
(1) The outdoor unit is factory supplied with refrigerant charge for use with refrigerant piping lines
of length 3 meters and with added 50 grams for air and moisture purge from the system.
(2) For refrigerant piping lines of length more than 3 meters, add in the field 25 grams of refrigerant
per extra meter more than 3 meters :
Example 1 = For 8 meter lines, refrigerant added = (8-3) x 25 = 125 grams.
Example 2 = For 10 meter lines, refrigerant added = (10-3) x 25 = 175 grams.
(3) NOTES
• Refrigerant overcharge may cause a serious trouble of compressor.
• Refrigerant undercharge may cause reduction of system performance.
To Next Page
Loading...
