4S4359128
1-7. Tubing Length
●Refrigerant tubing between the indoor and outdoor
units should be kept as short as possible.
●Select and decide the installation location so that
the length of the refrigerant tubing will be within the
limits given in Table 1-2.
Tubing length (L)
INDOOR
UNIT
OUTDOOR
UNIT
Elevation difference (H)
0711_M_I
Fig. 1-1
Table 1-2
Limit of elevation
difference between
the 2 units
Models C1852
Tubing Data CL1852
Tubing size Narrow tube in. (mm) 1/4 (6.35): Thickness 0.0314" (0.8 mm)
outer dia. Wide tube in. (mm) 5/8 (15.88): Thickness 0.0394" (1.0 mm)
Limit of tubing length (ft.) 65
Outdoor unit is higher 23
than indoor unit (ft.)
Outdoor unit is lower 23
than indoor unit (ft.)
Max. allowable tubing length at shipment (ft.) 33
Required additional refrigerant *1(oz./ft.) 0.27
No additional charge of compressor oil is necessary.
*1If total tubing length becomes 33 to 65 ft., charge additional refrigerant (R22) by 0.27 oz./ft..