10
FIG. 15
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.
FIG. 16
Improper installation and sealing of divider
plate 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.
CAUTION
FIG. 14
Finger
Tight
Front of Vehicle
Tighten to
compress gasket
to 1/2"
Roof
Gasket
Screws
620412, 620415, 620425 & 620426 Series Installation Instructions
e.
Install the Romex connector in the junction box.
f.
Hold the ceiling template up to the 14-1/4" x
14-1/4" (±1/8") opening. Be sure the large plate
faces the rear of the RV.
g.
Start each mounting bolt through the ceiling tem-
plate and up into the unit base pan by hand.
Install wood screw (not supplied) in each end
of the ceiling template. This insures a tight fit of
the return air cover to ceiling. See FIG. 14.
Evenly tighten mounting bolts to compress
gasket to 1/2" this will be a torque of 40 - 50
inch pounds. The bolts are self locking so
over tightening is not necessary. See FIG.
14.
2.
Installation of Divider Plate
a.
Measure the ceiling to roof thickness:
•
If distance is 2.0" - 3-3/4", remove perfo-
rated tab from divider plate.
•
If distance is 3-3/4” - 5-1/2”, remove no tabs.
b. Remove the backing paper from double sided
tape located on ceiling template. See FIG. 15.
c. Place divider plate up to bottom of air condi-
tioner base pan firmly. The foam tape on the
divider plate must seal to bottom of base pan.
See FIG. 16.
d. With slight pressure then push the divider plate
against the double sided tape on the ceiling
template.
Note: The adhesive on the insulation is extremely sticky.
Be sure the part is located where desired before pressing
into place.
e. Locate the 1/8” x 7” x 18” self -adhesive insula-
tion supplied with the return air kit. Remove the
backing paper from the insulation and carefully
stick onto the ceiling template divider panel.
See FIG. 17.
•
Excess width is intended to seal the di-
vider plate to the sides of the 14-1/4" x 14-
1/4" (±1/8") opening. This is to help pre-
vent cold air discharge from circulating into
the air conditioner return air opening.
•
If the insulation is too high, stick excess
height of insulation to the air conditioner
base pan. Do not cover up unit rating plate.
FIG. 17