Liquid line sizing, Discharge line sizing, 30 – 65°f leaving water temperature – AEC FSS Series 1.5- 10 HP Fountain Solution Systems User Manual
Page 34
FSS Series Fountain Solution Systems
Page 33
IAE-600
Liquid Line Sizing
The liquid line should be sized as small as possible, while
maintaining acceptable pressure drop, to minimize the refrigerant
charge. The total length between components must not exceed 200
actual feet or 300 equivalent feet. See Figure 11 for sizing.
Liquid risers should not exceed 15 feet.
Horizontal runs do not require a pitch. Insulation is not required
unless the line is installed in a high ambient area i.e. boiler room.
Install a liquid line charging valve to facilitate refrigerant charging.
Refer to Figures 13 and 14 for charge determination.
Discharge Line Sizing
For horizontal runs, the discharge line should be pitched
downward, in the direction of flow, at a rate of ½ inch for every 10
feet. This will allow oil to flow towards the condenser.
Discharge line sizing is based on the velocity required for
sufficient oil return back to the compressor. Discharge line sizing
is shown in Figure 12.
Figure 11
Liquid Line Sizing
30 – 65°F Leaving Water Temperature
Liquid Line Size (O.D.”)
Eqiv. FT
FSS-R-5
FSS-R-7.5
FSS-R-10
FSS-R-15
FSS-R-20
FSS-R-25
FSS-R-30
FSS-R-35
FSS-R-40
25
5/8
7/8
7/8
7/8
1 1/8
1 1/8
50
5/8
7/8
7/8
7/8
1 1/8
1 1/8
75
5/8
7/8
7/8
7/8
1 1/8
1 1/8
100
5/8
7/8
7/8
7/8
1 1/8
1 1/8
125
7/8
7/8
7/8
1 1/8
1 1/8
1 1/8
150
7/8
7/8
1 1/8
1 1/8
1 1/8
1 1/8
175
7/8
7/8
1 1/8
1 1/8
1 1/8
1 1/8
200
7/8
7/8
1 1/8
1 1/8
1 1/8
1 1/8
225
7/8
1 1/8
1 1/8
1 1/8
1 1/8
1 3/8
250
7/8
1 1/8
1 1/8
1 1/8
1 1/8
1 3/8
275
7/8
1 1/8
1 1/8
1 1/8
1 1/8
1 3/8
300
5/8
5/8
7/8
7/8
1 1/8
1 1/8
1 1/8
1 3/8
1 3/8