RTAA-SVX01A-EN
35
Installation — Remote Evaporator
3.
Piping between the evaporator and outdoor unit is not to exceed 200
actual feet and/or an equivalent length of 300 feet. (The latter includes the
equivalent length of pressure drops of all associated field installed
fittings, valves, accessories, and straight lengths of interconnecting
piping including the suction accumulator.)
4.
Horizontal portions of suction lines must be downward sloping toward
the compressor at least 1/2 inch for each 10 feet of run. This promotes
the movement of oil in the direction of gas flow.
5.
Suction lines must be insulated.
6.
The line sizes defined in
Table 4
,
5
, and
6
are to be used only for 40-50 F
leaving water temperature and/or full-load ice-making applications.
NOTE:
The factory must size piping for leaving water temperatures other
than 40-50 F.
Table 2
RTAA Circuit Capacities (nominal tons)
Model
Circuit 1
Circuit 2
70
35
35
80
40
40
90
50
40
100
50
50
110
60
50
125
60
60
Table 3
Equivalent Lengths of Non-Ferrous Valves and Fittings (feet)
Line Size
Inches OD
Globe
Valve
Short Angle
Valve
Short Radius
ELL
Long Radius
ELL
1-1/8
87
29
2.7
1.9
1-3/8
102
33
3.2
2.2
1-5/8
115
34
3.8
2.6
2-1/8
141
39
5.2
3.4
2-5/8
159
44
6.5
4.2
3-1/8
185
53
8
5.1
Reproduced by permission of Air Conditioning and Refrigeration Institute
Summary of Contents for RTAA-100
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