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—3—
RECOMMENDED TUBE DIAMETERS
* For tube sets between 50 and 175 ft, consult Residential Split System Long-Line Application Guideline.
CHECK-FLO-RATER® PISTON
* Piston listed is for any approved non-capillary tube coil combination. Piston is
shipped with outdoor unit and must be installed in an approved indoor coil.
UNIT
SIZE
LIQUID TUBE DIAMETER (IN.) VAPOR TUBE DIAMETER (IN.)
0 to 50 Ft
Tube Length Long-Line Applications*
0 to 50 Ft
Tube Length
Long-Line Applications*
(Maximum Diameter)
018, 024
3/8 3/8
5/8 3/4
030, 036 3/4 7/8
042, 048 7/8 1-1/8
060 1-1/8 1-1/8
UNIT SIZE—SERIES
PISTON*
IDENTIFICATION NO.
018-C, D 55
024-C, D 57
030-C, D 67
036-C, D 73
042-C, D 78
048-C 82
060-C 96
CERTIFICATION APPLIES ONLY
WHEN THE COMPLETE SYSTEM
IS LISTED WITH ARI.
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REGISTERED QUALITY SYSTEM