38MGRBQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
18
Long Line Applications:
1. No change in line sizing is required.
2. Add refrigerant.
Table 14 — Additional Charge Table Per Zone
NOTE: If the calculation results in a negative number no additional refrigerant is required. Electronic expansion valves in the outdoor unit
are used as metering devices.
Unit Size No. of Zones Charge oz. (kg.)
Additional Charge
Required After ft. (m)
Additional Charge
oz./ft. (g/m)
Total Maximum
Piping Length ft. (m.)
18 2 70.55 (2.0) 49 (15) 0.16 (15) 131 (40)
24 3 98.76 (2.8) 74 (22.5) 0.16 (15) 197 (60)
30 4 105.82 (3.0) 98 (30) 0.16 (15) 263 (80)
36 4 162.26 (4.6) 123 (37.5) 0.16 (15) 328 (100)
48 5 162.26 (4.6) 123 (37.5) 0.16 (15) 328 (100)
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