Specifications

SERVICING
198 Rev. 3
REFRIGERANT LINE SIZING
Known Factors:
1. RCC48A2A and CCA48TUA coil. Evaporator above Con-
denser.
2. Liquid Line 65 linear feet w/ 8 short radius elbows, and 30
ft. vertical lift.
3. Suction Line 65 linear feet w/ 8 long radius elbows.
Determine Suction and Liquid Line sizes:
Procedures:
A. Measure length of suction line. (65 ft.)
B. Count the number of suction line elbows. (8 long radius)
C. Calculate the equivalent length of fittings using the Fitting
Losses in Equivalent Feet Chart. (Calculate using the rec-
ommended suction line size for each unit, and long ra-
dius elbows.) 8 x 1.7 = 13.6 equivalent feet.
D. Add suction line length (A) and equivalent feet of fittings
(C). 65 + 13.6 = 78.6 effective feet.
E. The total effective length of Suction Line is 78.6 feet. Refer
to the Suction Line Sizing Chart to determine the actual
suction line required. (1 1/8")
F. Measure liquid line length. (65 ft.)
G. Count the number of liquid line elbows. (8 short radius)
H. Calculate the equivalent length of fittings using the Suc-
tion Line Elbow chart. ( Calculate using the recommended
liquid line size for each unit.)
8 x 1.2 = 9.6 equivalent feet.
I. Add liquid line length (F), equivalent feet of fittings (H).
65 + 9.6 = 74.6 effective feet.
J. The total effective length of liquid line is 74.6 ft. Refer to
the Liquid Line Sizing Chart (Evaporator Above Condens-
ing Unit) to determine the liquid line size. 75 effective
feet with 30 ft. lift will require a 1/2" liquid line.
K. To determine the additional charge required, multiply the
linear feet of liquid line to the refrigerant correction factor,
and subtract the factory charge for the line set.
65 x 1.3 = 84.5
25 x .60 = 15.0
= 69.5 oz. additional charge
3'
5'
10'
20'
2'
5'
10'
SUCTION LINE
LIQUID LINE
10'