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Preinstallation
Air
ADB
conditioner
3314850.000
457915
459516
540315
540316
640312
640315
B57915
B59516
3314851.000
457915
459516
540315
540316
FJX3473M
FJX3573M
640312
640315
B57915
B59516
5 Preinstallation
WARNING: Electrical shock hazard.
Disconnect the 120 VAC power from the RV. Failure
to obey this warning could result in death or serious
injury.
NOTICE: Disconnect the positive (+) 12 VDC terminal
from the supply battery.
This section describes the steps to take prior to installing
the heater.
1. Disconnect the 120 VAC and 12 VDC power
supplies.
2. The heater can be installed before or after the air
conditioner is installed.
– If the air conditioner is installed, the ADB will need
to be removed. Go to "Removing the ADB" on
page 4.
– If the air conditioner is not yet installed, go to
"Installing the air conditioner" on page 4.
4
Thermostat
Relay box
type
3312020.000
CCC 2
3313189.049
SZLCD
3313189.056
N/A
Mechanical
5.1 Removing the ADB
q
u
y
t
1 Removing the ADB
Side vent door
q
Front vent door
w
Return air vent grill
e
Sheet metal screw
r
1. Disengage the control knobs (mechanical control
models only) from the switch and thermostat shafts.
2. Open both side vent doors to access the mounting
screws.
3. Remove the front and rear vent doors to access the
mounting screws.
4. Remove the return air vent grille.
5. Remove the 8 mounting screws.
6. While holding the ADB, remove the two sheet metal
screws that secure the ADB to the ceiling template.
7. Continue with "Installation" on page 5.
5.2 Installing the air conditioner
1. Follow the instructions in the air conditioner's
installation manual, but stop when you reach the
steps to install the ADB.
2. Continue with "Installation" on page 5.
Heater Kit
w
e
r
Control knobs
t
Mounting screw
y
Rear vent door
u
EN
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