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SM830079
7. INSTALLATION INSTRUCTIONS
1) 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.
Fig. 1
Table 1
Tubing length (L)
INDOOR
UNIT
OUTDOOR
UNIT
Elevation difference (H)
0711_M_I
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
(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.
*
1
If total tubing length becomes 33 to 65 ft., charge additional refrigerant (R22) by 0.27 oz./ft..
Limit of elevation
difference between
the 2 units
than indoor unit