Rheem RA13 Series Installation Instructions Manual page 13

Interconnecting Tubing (cont�)
Example: A 3-Ton condensing unit is installed 50'
below the ID unit, requires a 75' of 1/2" diameter
liquid line, and 4 90° LR elbows�
• Fitting Equivalent Length (ft�) = 4 x �9 = 3�6'
• Total Equivalent Length (ft�) = 75' + 3�6' = 78�6'
• Rounded-down value (ft�) = 75'
Liquid Line
R-410A
Size Liquid Line
System
Connection Size (Inch
Capacity
Size (Inch O.D.) [mm]
Model
25 [7.62]
I.D.) [mm]
1/4 [6.35] 25 [7.62]
5/16 [7.94] 25 [7.62]
37 3/8" [9.53] 3/8 [9.53] 25 [7.62]
7/16 [11.12] 25 [7.62]
1/2 [12.71] 25 [7.62]
(excerpt fromTable 2, page 16)
This application is acceptable because the 50'
vertical rise is less than the maximum rise of 75' for
this application� The application is also considered
to have a long line set� Reference the long line set
section of the I&O for detail�
Long Line Set Applications
Long line set applications are defined as ap-
plications that require accessories or alternate
construction methods� The following are special
considerations that need to be addressed when
installing a long line set application:
• Additional refrigerant charge
• Fitting losses and maximum equivalent length
considerations
• Refrigerant migration during the off cycle
• Oil return to the compressor
• Capacity losses
• System oil level adjustment
Table 2 is used to determine if the application is
considered to have a long line set� The region of
the chart that is shaded grey is considered to
be a long line set application.
Oil Level Adjustments for
Long Line Set Applications
Additional oil will need to be added for long line set
applications� (Ref� Table 2)� Below is the equation
for the oil level adjustment and the compressor
name plate oil charge for the different od units.
Oil to be Added = [(Charge Adjustment + OD
Unit Name Plate Charge (oz.)) x (0.022) – [(0.10)
x (Compressor Name Plate Oil Charge (oz.))]
Example: An application requires 125ft of line set
with a liquid line diameter of 3/8", Charge Adjust-
ment = 52�4 oz�, Name Plate Charge = 107 oz�,
Name Plate Oil Charge = 25 oz�, Oil to be Added =
((52�4 oz� +107 oz�) x �022) – (�10 x 25 oz�) = 1�0 oz�
Elevation (Above or Below) Indoor Coil
50 [15.24] 75 [22.86] 100 [30.48] 125 [45.72]
Maximum Vertical Separation - Feet [m]
N/R N/R N/R N/R
50 [15.24] 60 [18.29] 45 [13.72] 35 [10.67]
50 [15.24] 75 [22.86] 80 [24.38] 80 [24.38]
50 [15.24] 75 [22.86] 95 [28.96] 90 [27.43]
50 [15.24] 75 [22.86] 95 [28.96] 95 [28.96]
INSTALLATION
Liquid Line Size
Total Equivalent Length - Feet [m]
150 [45.72] 175 [53.34] 200 [60.96] 225 [68.58]
N/R N/R N/R N/R
20 [6.1] 5 [1.52]
N/R N/R
75 [22.86] 70 [21.34] 65 [19.81] 60 [18.29]
90 [27.43] 85 [25.91] 85 [25.91] 85 [25.91]
95 [28.96] 95 [28.96] 95 [28.96] 95 [28.96]
RA13
Compressor
OD Model
ZP14KAE-PFV-130
RA1318AJ
RA1318AJ
ZP14K6E-PFC-130
Alternate
ZP20KAE-PFV-130
RA1324AJ
RA1330AJ ZP24K5E-PFV-130
ZP31K6E-PFV-130
RA1336AJ
ZP34K5E-PFV-130
RA1342AJ
ZP42K5E-PFV-130
RA1348AJ
RA1360AJ ZP51K5E-PFV-130
ZP31K6E-TF5-130
RA1336AC
ZP34K5E-TF5-130
RA1342AC
ZP42K5E-TF5-130
RA1348AC
ZP51K5E-TF5-130
RA1360AC
ZP31K6E-TFD-130
RA1336AD
ZP34K5E-TFD-130
RA1342AD
ZP42K5E-TFD-130
RA1348AD
ZP51K5E-TFD-130
RA1360AD
RA1348AY ZP42K5E-TFE-130
ZP51K5E-TFE-130
RA1360AY
RA14
Compressor
OD Model
ZP14KAE-PFV-130
RA1418AJ
RA1418AJ
ZP14K6E-PFC-130
Alternate
ZP20KAE-PFV-130
RA1424AJ
ZP24K5E-PFV-130
RA1430AJ
ZP29K5E-PFV-130
RA1436AJ
ZP34K53-PFV-130
RA1442AJ
ZP39K5E-PFV-130
RA1448AJ
ZP49K6E-PFV-130
RA1460AJ
ZP31K6E-TF5-130
RA1436AC
ZP34K5E-TF5-130
RA1442AC
ZP42K5E-TF5-130
RA1448AC
ZP51K5E-TF5-130
RA1460AC
ZP31K6E-TFD-130
RA1436AD
ZP34K5E-TFD-130
RA1442AD
ZP42K5E-TFD-130
RA1448AD
ZP51K5E-TFD-130
RA1460AD
250 [76.20] 275 [83.82] 300 [91.44]
N/R N/R N/R
N/R N/R N/R
55 [16.76] 50 [15.24] 45 [13.72]
80 [24.38] 80 [24.38] 80 [24.38]
90 [27.43] 90 [27.43] 90 [27.43]
Name Plate Oil
Charge (oz)
21
21
21
25
25
42
42
42
25
42
42
42
25
42
42
42
42
42
Name Plate Oil
Charge (oz)
21
21
21
25
25
42
42
42
25
42
42
42
25
42
42
42
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