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SPECIFICATIONS
A.
Table - Unit Data
Model No.
Nominal
Electrical
Capacity
Rating
(BTU HR)
Cooling
H541815A72X
13,500
120 Vac
60 Hz 1 ph
H541816A72X
15,000
H541915A72X
13,500
H541916A72X
15,000
H551816A72X
15,000
H551916A72X
15,000
*
For wire length over 24 ft., consult the National Electrical Code for proper sizing.
** Dometic Corporation gives GENERAL guidelines for generator requirements. These guidelines come from experiences
people have had in actual applications. When sizing the generator, the total power usage of your RV must be considered.
Keep in mind generators lose power at high altitudes and from lack of maintenance.
*** CIRCUIT PROTECTION: Time Delay Fuse or Circuit Breaker Required.
B.
Roof Requirements
●
A 14-1/4" x 14-1/4" (±1/8") square opening (hereinafter referred to as "roof opening") is required for installing this
unit. This opening is part of the return air system of the unit and MUST be finished in accordance with NFPA 1192.
●
Roof construction with rafters/joists support frames on a minimum of 16 inch centers.
C.
Table - Air Distribution Duct Sizing & Design
Duct Cross Sectional Area
Duct Size
Depth
Width
Total Duct Length
Duct Length (short run)
Register Requirements per A/C Unit
Number Required
Supply Register Free Air Area
Return Register Free Air Area
Distance From Duct End
Distance From Elbow
Total System Static Air Pressure
Blower at High Speed,
Filter & Grille In Place
Compressor
Compressor
Fan Motor
Rated Load
Locked
Rated Load
Amps
Rotor
Amps
Amps
12.7
68.0
2.8
13.2
70.0
2.8
12.7
68.0
2.8
13.2
70.0
2.8
13.2
70.0
2.8
13.2
70.0
2.8
21.0 Sq. In. Min.
1-1/2 In. Min. - 2-1/2 In. Max.
7.0 In. Min. - 10.0 In. Max.
15.0 Ft. Min. - 40.0 Ft. Max.
1/3 Total Duct Length
4 Min. - 8 Max.
14.0 Sq. In.
40.0 Sq. In.
5.0 In. Min. - 8.0 In. Max.
15.0 In.
0.55 - 1.10 In. W.C.
Fan Motor
Refrigerant
Minimum
Locked
R-410A
Wire Size*
Rotor
(oz)
Amps
8.0
19.5
12 AWG
Copper
8.0
20.1
Up to 24'
8.0
19.5
8.0
20.1
8.0
21.0
8.0
21.0
4
AC Circuit
Minimum
Protection
Generator
***Installer
Size**
Supplied
1 Unit / 2 Units
20 Amp
3.5 kW / 5.0 kW
20 Amp
3.5 kW / 5.0 kW
20 Amp
3.5 kW / 5.0 kW
20 Amp
3.5 kW / 5.0 kW
20 Amp
3.5 kW / 5.0 kW
20 Amp
3.5 kW / 5.0 kW
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