Wiring Requirements - Dometic Duo-Therm 57915.331 Installation Instructions Manual

D.

Wiring Requirements

1. 115 VAC Supply Line
Route a copper 12 AWG, with ground, 115 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 14-1/4" x 14-1/4" ( 1/8") open-
ing.
b. The power MUST be on a separate 20 Amp
time delay fuse or HACR circuit breaker.
c. Make sure that at least 15" of supply wire
extends into the roof opening. This ensures
and easy connection 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 equiva-
lent methods to protect the wire where it
passes into the opening.
2. Route a dedicated 12 VDC supply line (18-22
AWG) from the RV's converter or battery to
the roof opening.
a. This supply line must be located in the front
portion of the 14-1/4" x 14-1/4" ( 1/8") open-
ing.
b. Make sure that at least 15" of supply wire
extends into the roof opening.
3. If system includes a gas furnace, route two 18
gauge thermostat wires from the furnace to roof
opening of the air conditioner that will control it. If
more than one furnace is to be used, route the
second set of thermostat wire to the second air
conditioner. Make sure that 15" of wire extends
into the opening.
4. Route a 4-conductor receiver cable from the
Receiver mounting position into the roof open-
ing. Make sure that at least 15" of the wire
extends into the roof opening and 6" extend at the
mounting position of the Receiver . See Section
E-2.
E. Receiver & Cable Installation
Note: The receiver monitors the temperature of the living
area. The following receiver location is recommended to
maintain the selected temperature setting. Any other
location must be approved by Dometic. See FIG. 9.
1. Locate the receiver in a front to rear position on
the ceiling, and to one side or the other of the
return air cover. See FIG. 8A, 8B & 8C. Mounting
the receiver from side to side is not recom-
mended, but could be mounted this way as a last
possibility.
Note: When used with the 3308120 Genesis Filtration
System, do not mount the receiver where it will interfere
with the filter removal. See FIG. 8A. When used with the
3105935 Quick Cool Return Air Grille do not install near
the discharge air duct. See FIG. 8C.
Note: To operate the air conditioner, the receiver must be
installed in a location that will allow the remote to be in
FIG. 8A
3308120 Genesis Filtration System
Do Not Mount Receiver
Here, It Will Block Filter
Removal
FIG. 8B 3105007 Return Air Grille
Receiver May Be
Mounted Here
Receiver May Be
Mounted Here
FIG. 8C
3105935 Return Air Grille
Receiver May Be
Mounted Here
Do Not Mount
Receiver Here
8
579 & 595 Installation Instructions
Receiver May Be
Mounted Here
Receiver May Be
Mounted Here