Tecumseh AH5540E, Service Handbook

Page: 87 / 120

79
Cond. Unit CAP
ACITY
(Btu/h)
Line Size, T
ype L Copper OD (in)
SUCTION LINE SIZE OD (in) Line Length, Equivalent F
eet
Ve
lo
ci
ty
= 1500
fpm*
LIQUID LINE SIZE OD (in) Line Length, Equivalent F
eet
Ve
lo
ci
ty
= 100
fpm*
DISCHARGE LINE SIZE OD (in) Line Length, Equivalent F
eet
Ve
lo
ci
ty
= 1500
fpm*
10
25
50
100
10
25
50
100
10
25
50
100
1,000
5/16
5/16
3/8
1/2
1/4
3/16
3/16
3/16
3/16
~
3/16
3/16
1/4
1/4
3/16
2,000
3/8
3/8
1/2
1/2
3/8
3/16
3/16
1/4
1/4
~
3/16
1/4
1/4
5/16
3/16
3,000
3/8
1/2
1/2
5/8
3/8
3/16
1/4
1/4
1/4
3/16
3/16
1/4
5/16
5/16
1/4
4,000
1/2
1/2
5/8
5/8
1/2
3/16
1/4
1/4
5/16
3/16
1/4
5/16
5/16
3/8
1/4
6,000
1/2
5/8
5/8
3/4
5/8
1/4
1/4
5/16
5/16
1/4
1/4
5/16
3/8
3/8
5/16
8,000
1/2
5/8
3/4
7/8
5/8
1/4
1/4
5/16
3/8
1/4
5/16
3/8
3/8
1/2
3/8
10,000
5/8
3/4
3/4
7/8
3/4
1/4
5/16
5/16
3/8
5/16
5/16
1/2
1/2
1/2
3/8
12,000
5/8
3/4
7/8
1 1/8
7/8
1/4
5/16
3/8
3/8
5/16
3/8
1/2
1/2
1/2
3/8
18,000
3/4
7/8
1 1/8
1 1/8
7/8
5/16
3/8
3/8
1/2
3/8
3/8
1/2
5/8
5/8
1/2
Table 5-5: R134a Refrigerant Line Sizes, -10°F Evap T
emp, 40°F Suction V
apor T
emp, 105°F Condensing and Liquid T
emp
1,000
3/8
1/2
1/2
1/2
3/8
3/16
3/16
3/16
3/16
~
3/16
3/16
1/4
1/4
3/16
2,000
3/8
1/2
5/8
5/8
1/2
3/16
3/16
1/4
1/4
3/16
3/16
1/4
5/16
5/16
1/4
3,000
1/2
5/8
3/4
3/4
5/8
3/16
1/4
1/4
1/4
3/16
1/4
5/16
5/16
3/8
1/4
4,000
1/2
5/8
3/4
7/8
3/4
3/16
1/4
1/4
5/16
3/16
1/4
5/16
3/8
3/8
5/16
6,000
5/8
3/4
7/8
1 1/8
7/8
1/4
1/4
5/16
5/16
1/4
5/16
3/8
3/8
3/8
1/2
Table 5-4: R-134a Refrigerant Line Sizes, 20°F Evap T
emp, 40°F Suction V
apor T
emp, 105°F Condensing and Liquid T
emp
*
Largest
line
size
that
will
maintain
the
stated
refrigerant
velocity
.
Please
consult
industry
references
such
as
the
ASHRAE
Refrigeration
Handbook
for
additional
infor
-
mation regarding how to properly size suction and discharge line risers and condenser to receiver condensate lines.