Dometic 457915 Installation & Operating Instructions Manual page 11

INSTALLATION INSTRUCTIONS
2. Install two (2) (supplied) sheet metal screws in-
side return air opening to secure air distribution
box to ceiling template. See (FIG. 20).
3. Install eight (8) (supplied) wood screws inside
the front, rear and side doors to secure air distri-
bution box to ceiling. See (FIG. 20).
FIG. 20
2 Sheet
Metal Screws
8 Wood Screws
4. Install front and rear doors.
5. Place filter in return air grille. It may already be
installed on some units. See (FIG. 21).
FIG. 21
Return Air
Vent Grille
6. Install return air vent grille into the air distribution
box. Slide return air grille tab into slot in ADB
and rotate up and snap in place. See (FIG. 22).
Installation
Filter
11
FIG. 22
Return
Air Grille
7. Install the control knobs into the air distribution
box. See (FIG. 23).
FIG. 23
8. The unit installation is now complete and is
ready for operation. The power supply to the unit
may now be turned on.
9. Verify that all features of the installed system
work. Please read the following operating in-
structions before attemping to run the unit.
Slot In ADB
Knob