16
4.4.5.6 Oil Level Adjustment for
Long Line Set Applications
$GGLWLRQDORLOZLOOQHHGWREHDGGHGIRUORQJOLQHVHW
DSSOLFDWLRQV5HI7DEOH%HORZLVWKHHTXDWLRQIRU
the oil level adjustment. The compressor name plate
RLOFKDUJHIRUWKHGLIIHUHQWRXWGRRUXQLWVLVVKRZQLQ
the table to the right.
Oil to be Added = [(Charge Adju OD
Unit Name Plate Charge (oz.)) × (0.022) – [(0.10) ×
(Compressor Name Plate Oil Charge (oz.))]
Example:
An application requires 125 ft. of line set
ZLWKDOLTXLGOLQHGLDPHWHURIµ&KDUJH$GMXVWPHQW
= 52.4 oz., Name Plate Charge = 107 oz., Name Plate
2LO&KDUJH R]2LOWREH$GGHG R]
oz.) × .022) – (.10 × 25 oz.) = 1.0 oz.
4.4 Refrigerant Line Set Selection (cont.)
4.0 INSTALLATION
Tubing
4.4.5.7 Capacity Losses
Long line lengths can result in a reduction in capacity
due to vapor line pressure drop and heat gain or loss.
Refer to Table 2 for capacity loss multipliers for vari-
ous vapor line diameters and lengths. Only use vapor
lines listed in Table 2 to assure proper oil return. This
table does not account for any capacity loss due to
heat gain or loss from the environment. It is extremely
important not to oversize the vapor line to minimize
capacity loss at the expense of proper oil return. If the
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-
WHUDQGOHQJWKFDSDFLW\ORVVZLOOEHH[FHVVLYH7KHIXOO
length of the vapor line must be insulated to minimize
heat gain or loss.
OD
Model
Compressor
Name Plate Oil
Charge oz [ml]
Factory
Installed
CCH
24
ZPS21-K5E-PFV
25 [739]
N
36
ZPS30K5E-PFV
25 [739]
Y
48
ZPS40K5E-PFV
42 [1242]
Y
60
ZPS49K5E-PFV
42 [1242]
Y
