Tecumseh AEA4440YXA - Page 95

A LOOK AT SERVICE SAFETY
Installation and Replacement Information 95
Figure 5-4. Refrigerant line pressure drops for “Freon” 502 refrigerant (reprinted by permission of DuPont
0.2 0.3 0.4 0.6 0.8 1 2 3 4 6 8 10 20 30 40 60 80 100
2000 3000 4000 6000 8000
10,000
BTU's Per HR
0.2
0.2 0.3 0.4 0.6 0.8
1 2 3 4 6 8
10 20 30 40 50
2 3 4 5 6 810 20 30 40500.3 0.4 0.6 0.8 1
At 80°F Condenser
At 100°F Condenser
At 120°F Condenser
7
1
/8
"
6
1
/8
"
5
1
/8
"
4
1
/8
"
3
5
/8
"
3
1
/8
"
2
5
/8
"
2
1
/8
"
1
5
/8
"
1
3
/
8
"
1
1
/8
"
7
/8
"
3
/4
"
1
/2
"
3
/8
"
5
/8
"
O
.
D
.
T
y
p
e
L
C
o
p
p
e
r
T
u
b
i
n
g
-60°F Evaporator Temperature
-40
°F
Tons of Refrigeration
Pressure Drop In Lbs. Per Sq. In. Per 100 Ft.
EXAMPLE:
5.5 Tons at -40°F Evap. 85°F Cond.
Choose 2
5
/8
" Suction Line Pressure Drop = 0.3
Choose
3
/4
" Liquid Line Pressure Drop = 1.7
-20°F
2
0°
F
40°F
Discharge Line
Liquid Line
0°F
NOTE: Pressure drops do not allow for
pulsating flow. If flow is pulsating,
use next larger pipe size.