Installing Unit - Dometic Blizzard NXT H540315 Installation Instructions Manual

Roof top unit used with 3105007.xxx or 3105935.xxx return air grille, electronic control kit, thermostat, optional indoor temperature sensor, air conditioner, ccc 2/lcd sz controls
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INSTALLATION INSTRUCTIONS
and could cause a leak.
Lift and place the unit over the prepared open-
ing using the gasket on the unit as a guide. See
(FIG. 12).
FIG. 12
4. Place the electronic control box kit and the RAG
kit inside the RV. These boxes contain mounting
hardware for the unit and will be used inside the
RV.
 T his completes the outside work. Minor
adjustments can be done from inside the
RV if required.
H.

Installing Unit

1.  C heck gasket alignment of the unit over the
roof opening and adjust if necessary. Unit may
be moved from below by slightly lifting. See
(FIG. 13).
FIG. 13
Center Unit From Below
2. Remove return air cover and ceiling template
from carton. See (FIG. 14).
Lift And Place
Front
Do Not Slide
Roof Gasket
10
FIG. 14
Ceiling
Template
3. All models listed in this manual will use a four
(4) bolt pattern for installing the RAG kit. These
bolts and the electronic control box cover are
furnished in the CCC 2 control kit.
4. Reach up into the return air opening and pull the
unit electric cord down for later connection. See
(FIG. 15).
FIG. 15
Furnace
Wires
Gasket
5. Hold the ceiling template up to the roof opening.
Make sure the large plate faces the rear of the
RV. See (FIG. 16).
a. Start each mounting bolt through the ceiling
template and up into the unit base pan by
hand. Install wood screw in each end of the
ceiling template. This ensures a tight fit of
the return air cover to ceiling. See (FIG. 16).
b.  Tighten mounting bolts to
correct torque specifications. Overtighten-
ing could damage unit's base pan or ceiling
template. Not enough torque will allow an in-
adequate roof seal, and could cause a leak.
Tighten all four (4) mounting bolts EVENLY
with in 40 to 50 inch pounds. See (FIG. 16).
 T his will compress the roof gasket to
approximately 3/4".
Divider Plate
Return Air
Cover
Return Air
Grille
Control
Cables
120 Vac
Power
Supply
Electrical
Cord

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