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40MUAA: Service Manual
REFRIGERANT LINES
General refrigerant line sizing
1. The outdoor units are shipped with a full charge of R410A refrigerant. All charges, line sizing, and capacities are based on runs of 25 ft. (7.6 m). For runs
over 25 ft. (7.6 m), consult the product data.
2. Minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m).
3. Refrigerant lines should not be buried in the ground. If it is necessary to bury the lines, not more than 36 in. (914 mm) should be buried. Provide a
minimum 6 in. (152 mm) vertical rise to the service valves to prevent refrigerant migration.
4. Insulate the suction line. Use a minimum of ½ in. (12.7 mm) thick insulation. Closed-cell insulation is recommended in all long-line applications.
5. Special consideration should be given to isolating interconnecting tubing from the building structure. Isolate the tubing so that vibration or noise is not
transmitted into the structure.
6. For piping runs greater than 25 ft. (7.6 m), add refrigerant up to the allowable length as specified in the installation manual.
Refrigerant Coil Specifications
UNIT SIZE
Number of rows
Tube pitch (a)x row pitch (b)
Fin Spacing
Fin type
Fin Material
Tube outside diameter
Nominal Tube Wall
Tube Enhancement
Tube Material
Coil length x height x width
Face area
Number of circuits
Metering Device
High Burst Pressure
Low Burst Pressure
Design (high/low) Burst Pressure
Gas Pipe (size – connection type)
Liquid Pipe (size – connection type)
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 5 — Refrigerant Coil Specifications
18
in
mm
FPI
mm
1.3
inch
mm
mm (inch)
(Yes/ No)
inch
16.34x13.23x1.58x2
mm
ft
2
inch
Psi (MPa)
Psi (MPa)
Psi
In (mm)
Ø3/4" (19)
In (mm)
Ø3/8" (9.52)
12
24
3
0.83x0.53
21x13.37
20
1.3
Louvered
Gold hydrophilic aluminum
0.276
7
0.00945 (0.24)
Yes
Aluminum
16.34x21.5x2.11x2
415x336x40.11x2
3
6
EEV
550(3.79)
340(2.34)
550/340
Ø3/4" (19)
Ø3/8" (9.52)
30/36/48
60
4
5
1.3
1.3
16.34x21.5x2.63x2
415*546*53.48*2
415*546*66.85*2
4.88
4.88
10
14
Ø3/4" (19)
Ø7/8" (22)
Ø3/8" (9.52)
Ø3/8" (9.52)
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