Dometic B3200 - Specifications; Roof Requirements

4
A. Table - Unit Data
Type Nominal
Cooling
Capacity
Electrical
Rating
Compressor
Rated Load
Amps
Compressor
Locked
Rotor
Amps
Fan Motor
Rated Load
Amps
Fan Motor
Locked
Rotor
Amps
Refrigerant
R-410A
(grams / oz)
Minimum
Wire Size*
AC Circuit
Protection
***Installer
Supplied
Minimum
Generator
Size**
1 Unit / 2 Units
3241 3.0 kW 220 - 240 Vac
50 / 60 Hz 1 ph
5.46 27 .92 2.3 525 / 18.5 1.5 mm
2
Copper
Up to 8
Meters
10 Amp 3.5 kW / 5.0 kW
3242 3.0 kW 5.46 27 .92 2.3 695 / 24.5 10 Amp 3.5 kW / 5.0 kW
* For wire length over 8 meters, consult regulatory codes 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 362 mm x 362 mm (± 3 mm) 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 nished in accordance with NFPA
1192.
● Roof construction with rafters/joists support frames on a minimum of 406 millimeter centers.
● Minimum of 51 millimeters and maximum of 102 millimeters distance between roof to ceiling of RV.
C. Table - Air Distribution Duct Sizing & Design
Air Distribution Duct Sizing & Design Chart
For Ducted Applications
Return Air Cover Model 3105007.XXX
3105935.XXX
Roof Cavity Depth 51 mm Min. - 140 mm Max.
Duct Cross Section Area (inside) 144 cm
2
Min.
Duct Size
Depth
Width
Total Duct Length
Duct Length (short run)
38 mm Min. - 64 mm Max.
178 mm Min. - 254 mm Max.
4.6 M Min. - 12.2 M Max.
1/3 Min. Of Total Duct Length
Register Requirements
Number Required Per Run
Free Air Area Per Register
Distance From Duct End
Distance From Elbow
2 Min.
90 cm
2
Min.
127 mm Min. - 203 Max.
381 mm
Total System Static Air Pressure
Blower At High Speed, Filter
& Grill In Place
30 - 160 Pascal
Note: Duct sizes listed are inside dimensions
SPECIFICATIONS