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1-7. Tubing Length
G Refrigerant tubing between the indoor and outdoor
units should be kept as short as possible.
G Select and decide the installation location so that
the length of the refrigerant tubing will be within the
limits given in Table 1-6.
Table 1-6
Tubing Data
Narrow tube
Tubing size
outer dia.
Wide tube
Limit of tubing length
Outdoor unit is higher
Limit of elevation
than indoor unit
difference between
Outdoor unit is lower
the 2 units
than indoor unit
Max. allowable tubing length at shipment (ft.)
Required additional refrigerant
No additional charge of compressor oil is necessary.
1
*
If total tubing length becomes 100 to 165 ft., charge additional refrigerant (R22) by 0.48 oz./ft..
*
2
If total tubing length becomes 100 to 165 ft., charge additional refrigerant (R22) by 0.53 oz./ft..
Models
CH2432
in. (mm)
1/4 (6.35)
in. (mm)
3/4 (19.05)
(ft.)
165
165
(ft.)
100
(ft.)
100
*1
(oz./ft.)
0.48
6
S4179705
Tubing length (L)
INDOOR
UNIT
Elevation difference (H)
OUTDOOR
UNIT
Fig. 1-1
CH3632
3/8 (9.52)
3/4 (19.05)
165
165
100
100
*2
0.53
0711_M_I
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