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Unit Installation
Evacuation
It is required to evacuate the system at 350 microns or less. If a leak is suspect, apply dry nitrogen
to locate it. Repair the leak and repeat the leak test. To verify that the system reports no further leaks,
close the valve that goes to the suction vacuum pump; this will isolate it and will allow you to
sustain the system under a vacuum. Observe the gauge during several minutes. If reading indicates
a stable and continuous increase, it will be indicative of a leak. If the gauge indicates an increase
and after several minutes it stabilizes and remains constant, it will be indicative of a system free
of leaks but still withholding humidity. This situation will require an additional evacuation in the
event of a gauge reading above 350 microns.
Line Sizing
Table 2.
Model Size
Suction Line Connection Size
Suction Line routing (in feet)
Optional
25'
Standard
Optional
50'
Standard
Optional
100'
Standard
Table 3.
Line Connection
Size
Model Size
(inch <O.D.)
2 Ton
3/8"x
3 Ton
3/8"x
4 Ton
3/8"x
5 Ton
3/8"x
Note:
1. x Standard line size
2. N/A (application not recommended
3. Charge multiplier for additional interconnection of refrigerant line length: Líquid 3/8" 0.6oz/ft
16
Length/Dimension of Suction Line vs. Capacity Multiplier (R410A)
2 Ton
3/8" Std.
5/8 Opt
3/4 Std.
1.00
1.00
0.99
0.99
0.98
0.99
Dimension of Líquid Line (R410A)
Connection Size
Compressor
and Line Size
Type
(inch O.D.)
3/4"x
Rotating
5/8"
3/4"x
Rotating
5/8"
7/8"x
Rotating
3/4"
3/4"
Rotating
7/8"x
1-1/8"
3 Ton
4 Ton
3/8" Std.
3/8" Std.
5/8 Opt.
3/4 Opt.
3/4 Std.
7/8 Std.
0.99
0.99
1.00
1.00
0.98
0.98
0.99
0.99
0.95
0.97
0.98
0.98
Liquid Line Size
Outdoor Unit Above or Below Indoor Coil
Total Length Equivalent - Feet
25
50
Maximum Vertical Separation - Feet
25
50
25
50
25
50
25
50
25
50
25
50
25
50
25
50
25
40
5 Ton
3/8" Std.
3/4 Opt.
7/8 Std.
0.98
1.00
0.97
0.99
0.95
0.97
60
100
45
40
45
40
50
50
50
50
50
40
50
40
50
40
50
40
30
N/A
MS-SVN052E-EN
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