Dometic 595 SERIES User Manual

5

.  Check for obstructions in the area where air condi-   

 

tioner will be installed.

 

2.  The roof must be designed to support 30 pounds    

 

when the RV is in motion. Normally a 200 lb. static  

 

 

load design will meet this requirement.

 

3.  Check inside the RV for air box obstructions (i.e. door  

 

openings, room dividers, curtains, ceiling fixtures,

etc.)

Before preparing the ceiling opening, the type of system options must be 

decided upon. If a remote sensor is to be used, provision must be made 

for it. If the load shed option is to be used, wires must be run from the 

load shed control to the Dometic A/C. If a furnace is to be connected, 

wires must be run from the furnace to the Dometic A/C. Read all of the 

 

.  A 4-/4” x 4-/4” (±/8”) opening must be cut    

 

through the roof and ceiling of the RV. This opening  

 

 

must be located between the roof reinforcing mem- 

 

 

bers.

 

2.  Mark a 4-/4” x 4-/4” (±/8”) square on the roof   

 

and carefully cut the opening.

 

3.  Using the roof opening as a guide, cut the matching  

 

 

hole in the ceiling.

 

.  If the opening exceeds 4-3/8” x 4-3/8”, it will be    

 

necessary to install spacers.

 

2.  If the opening is less than 4-/8” x 4-/8”, it must   

 

be   enlarged. 

 

3.  Route a copper 2 AWG, with ground, 20 VAC    

 

supply line from the fuse or circuit breaker box to the  

 

 

roof opening.

 

  a.  This supply line must be located in the front portion  

 

 

  of the 4-/4” (±/8”) opening.

 

  b.  The power MUST be on a separate 20 amp time  

 

 

  delay fuse or HACR circuit breaker.

 

  c.  Make sure that at least 5” of supply wire extends  

 

 

  into the roof opening. This ensures easy connec-   

 

 

tion at the junction box.

 

  d.  Wiring must comply with all National, State and   

 

 

Local Wiring Codes.

 

  e.  Use a steel sleeve and a grommet or equivalent   

 

 

methods to protect the wire where it passes into  

 

 

 

the opening.

 

4.  The opening created must be framed to provide    

 

adequate support and prevent air from being drawn  

 

 

from the roof cavity. Lumber 3/4” or more in thickness  

 

 

must be used. Remember to provide an entrance hole  

 

 

for power supplies, furnace wiring, 4-conductor con- 

 

 

trol cable, remote sensing and load shed (Energy  

 

 

Management System) options as desired.