Dometic 620525.331 Adhesive, Foam Divider Mark And Cut 2 x Opening For Center Duct

620515, 620525, 620526, 630515 & 630516 Installation Instructions

FIG. 20

Base Pan

Upside

Down

Foam

Divider

Place Foam Divider in (14-1/4" x 14-1/4" (±1/8") Ceiling Opening against Base Pan Bottom

Do Not Peel Tape Off Adhesive

Ceiling

Foam Divider Ceiling

Level (±1/4") Tear Off

Excess

e.Use Aluminum foil tape (not supplied) to seal the ends of the foam divider to the sides of the opening. Make sure the area behind the flange on the ceiling template is sealed. See FIG. 22.

FIG. 22	Use Aluminum Foil Tape To Seal the
	Foam Divider To The Sides of 14-1/4"
Route wires	x 14-1/4" (±1/8") Ceiling Opening
through Slot
Catch Flange In Groove Of		Make Sure To Seal

c.Install Ceiling Template

•Peel the paper off of the foam divider and stick it in place on the center of the rear flange of the return air opening on the ceil- ing template. See FIG. 21.

FIG. 21 Foam Divider

Adhesive

Peel Off Paper - Center Divider - Stick To

Rear Flange On Ceiling Template

d.Start each mounting bolt through the ceiling tem- plate and up into the unit base pan by hand.

EVENLY tighten the three bolts to a torque of 40 to 50 inch pounds. This will compress the roof gasket to approximately 1/2". The bolts are self locking so over tightening is not necessary.

CAUTION

If bolts are left loose there may not be ad- equate roof seal or if over tightened, damage may occur to the air conditioner base or ceil- ing template. Tighten to specifications listed in this manual.

12

Return Air Cover Behind Flange

CAUTION

Improper installation and sealing of foam di- vider will cause the compressor to quick cycle on the cold control. This may result in fuse or circuit breaker opening and/or lack of cool- ing.

2.Center Discharge Duct Application Installation Note: If using non-center duct installation, go to Section 1. "All Non-Center Duct Installations", on page 11. Important: A duct adapter (not supplied) must be installed between the unit discharge and the customer installed cen- ter duct. This duct adapter must be approved by Dometic.

a.Check gasket alignment of the air conditioner over the roof opening and adjust if necessary. Unit may be moved from below by slightly lift- ing and moving. See FIG. 13.

•Remove return air cover, ceiling template, foam divider and air filter from the 3308120 carton.

•Locate the four (8" x 1/4-20) unit mounting bolts, junction box cover and Romex con- nector in the 3107180 bolt kit.

•Pull down the unit's electrical cord and fas- ten the junction box with screws to the framing in the front of the 14-1/4" x 14-1/4" (±1/8") opening. See FIG. 14.

b.Installing Foam Divider

•Cut notch in the center section of the foam divider to fit (approximately 2 x 8 inches) snugly around duct. See FIG. 23.

FIG. 23	Tape Covered
	Adhesive

Foam

Divider

Mark And Cut 2” x 8”

Opening For Center Duct