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I-87
SM831148
1. Specifications
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Table 1-2 Tubing Data for Models
Limit of elevation
difference between
the 2 units
Models
C(H)2672R
C(H)3072R
C(H)3672R
C(H)4272R
Tubing Data
Tubing size
Liquid tube in. (mm) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)
outer diameter
Gas tube in. (mm) 5/8 (15.88) 5/8 (15.88) 5/8 (15.88)
Limit of tubing length (ft.)
165 165 165
Outdoor unit is placed
100 100 100
higher (ft.)
Outdoor unit is placed
50 50 50
lower (ft.)
Max. allowable tubing length at shipment (ft.)
10 – 100 10 – 100 10 – 100
Required additional refrigerant *
1
(oz./ft.)
a) 0.43 b) 0.43 b) 0.43
Refrigerant charged at shipment (lbs.) 4.2 6.2 7.9
No additional charge of compressor oil is necessary.
*1 If total tubing length becomes 100 to 165 ft., charge additional refrigerant by 0.43 oz./ft.
Table 1-3 List of Connection Tube Sizes
26 – 42
ø5/8"
ø3/8"
0.43 oz.
Gas tube
Liquid tube
Main tubing (L)
Type capacity of indoor units
Amount of additional charge per 1 ft.