Eaton-Williams Qualitair Installation Manual - page 15
ICC / ICU SYSTEM INSTALLATION MANUAL
E\Manuals\Others\Qualitair\ICC\0412115
15
11.2 ICU – RECOMMENDED LINE SIZES
Horizontal or Downflow application (Suction Line)
Upflow application (Suction Line)
Based on 5psi (0.35bar) Pressure drop
Line Length (m)
Max
Max
R407c
–
kg
Table
A
5 10 15 20 25 30 35 40 45 50 60 70 80 90 100
Table B
Size
Lift
Additional Oil
Additional Charge
ICU30
Suction 3/8”
½”
½” ½” ½” 5/8”
¾”
Suction
3/8”
5
None
>5m = 25g/m (¼” Liquid)
Liquid ¼”
¼”
¼” ¼” ¼” ¼”
DO NOT USE THIS AREA
ICU40
Suction ½”
½”
½” 5/8”
5/8”
5/8”
¾”
Suction
½”
15
None
>5m = 25g/m (¼” Liquid)
Liquid ¼”
¼”
¼” ¼” ¼” ¼”
DO NOT USE THIS AREA
ICU55
Suction ½” 5/8”
5/8” 5/8” 5/8” ¾” ¾” ¾” ¾” ¾” ¾” 7/8” 7/8” 7/8” 7/8”
Suction
½”
8
None
>5m = 40g/m (3/8” Liquid)
Liquid 3/8”
3/8”
3/8” 3/8” 3/8” 3/8” ½” ½” ½” ½” ½” ½” ½” ½” ½”
>30m = 105g/m (1/2” liquid)
ICU80
Suction
5/8” 5/8” ¾”
¾”
¾”
¾” 7/8” 7/8” 7/8” 7/8” 7/8” 7/8” 7/8” 7/8” 11/8”
Suction
¾”
30
None
>5m = 40g/m (3/8” Liquid)
Liquid 3/8”
3/8”
3/8” 3/8” ½” ½” ½” ½” ½” ½” ½” ½” ½” ½” ½”
>30m = 105g/m (1/2” liquid)
Note:
a)
= DO NOT USE IN THIS AREA.
b)
Crankcase heaters are required where system charge exceeds 4.5kg and DOES NOT contain an accumulator.
c)
Maximum pipe run stated in Table A, must include the reduction allowance (equivalent length) for vertical lifts and fittings indicated in Table B below.
Table C General fitting losses - equivalent straight lengths in metres.
Pipe Size
Fitting
3/8” ½” 5/8” ¾” 7/8”
11/8”
45°
Bend
0.12 0.15 0.18 0.21 0.24 0.30
90° Bend Short Radius
0.37
0.43
0.49
0.55
0.61
0.79
90° Bend Long Radius
0.24
0.27
0.30
0.37
0.43
0.52
180° Bend Short Radius
0.73
0.91
1.10
1.28
1.46
1.83
180° Bend Long Radius
0.46
0.55
0.64
0.76
0.85
1.07
90°
Elbow
0.67 0.85 1.04 1.25 1.46 1.89
Oil
Trap
0.74 0.86 0.98 1.10 1.22 1.58