Long Lineset Instructions

Page 14
REFRIGERANT HFC-410A SUCTION LINE PRESSURE DROP/VELOCITY PER 100ft. OF LINE
At 45_F Evaporating Temperature and 125_F Condensing Temperature
30
25
20
15
10
9
8
7
6
5
4
3
2
1.5
1.0
.9
.8
.7
10 9 8 7 6 5 4 3 2 1.5 1.0 .9 .8 .7 .6 .5 .4 .3 .2
HFC-410A SUCTION LINE PRESSURE DROP (pounds./100 Feet)
COOLING CAPACITY (TONS)
30
25
20
15
10
9
8
7
6
5
4
3
2
1.5
1.0
.9
.8
.7
COOLING CAPACITY (TONS)
10 9 8 7 6 5 4 3 2 1.5 1.0 .9 .8 .7 .6 .5 .4 .3 .2
HFC-410A SUCTION LINE PRESSURE DROP (pounds./100 Feet)
NOTE—Shaded area denotes unacceptable velocity range.
40 30 20 15
40 30 20 15
12.512.5
To use this chart, first find capacity (tons) on left side of chart. To find pipe size, proceed right to smallest pipe size. Pressure drop (vertical line) and
velocity (diagonal lines) can then be determined for the pipe size selected. For example, for 10 ton unit, select 1‐3/8 in. outside diameter. line.
600fpm
1200fpm
1500fpm
2000fpm
3000fpm
Figure 7. HFC-410A Suction Line