Thetford N81 Series Installation Manual - Through 8/2/04 - Manual (Page 4)

Installation Manual 4
Assemble the Enclosure for the Refrigerator
1. Make sure the enclosure is 59.88 - 60.01 inches high for
N81X models or 52.88 - 53.01 inches high for N61X models
x 23.50 - 23.63 inches wide x 24 inches deep.
2. Make sure the floor is solid and level.
- The floor must be metal or a wood panel and extend the full
width and depth of the enclosure.
- The floor must be able to support the weight of the refrigera-
tor and its contents.
3. Make sure there are no adjacent heat sources such as a
furnace vent, a hot water heater vent, etc.
Install the Lower and Upper Vents
1. Using the following chart, decide which vents and rough
opening (RO) sizes to use:
Certified Vent P/N RO Height RO Width
Upper Roof 622293 N/A N/A
Exhaust Cap
Upper Roof 616319 24 in. 5 1/4 in.
Exhaust Vent
Lower Metal 616010 13 5/8 in. 21 5/8 in.
Intake
Upper Exhaust 621156 13 3/4 in. 21 1/2 in.
& Lower Intake
Plastic
2. Install the lower intake vent (See Art01598, Art01599, and
Art01602):
NOTE: The lower intake vent is also the service access
opening for the components on the rear of the refrig-
erator.
WARNING: Make sure the bottom of the opening of the
lower intake vent is even with or immediately below the
floor level. This allows any leaking propane gas to
escape to the outside and not to collect at floor level.
- Make sure the bottom of the opening of the lower intake vent
[1] is even with or immediately below the floor level.
- Align the lower intake vent vertically below the coils [2] and
the condenser [3] of the refrigerator.
3. Install the upper exhaust vent:
CAUTION: Make sure that no sawdust, insulation, or
other construction debris is on the refrigerator or in the
enclosure. Debris can cause a combustion hazard and
prevent the refrigerator from operating correctly.
NOTE: Tighten the screws of the upper roof exhaust cap to 10
inch-pounds max. Also make sure that the air flow
around the upper roof exhaust cap is not blocked or
decreased by other roof mounted features such as a
luggage carrier, an air conditioner, a solar panel, etc.
- If the design of the vehicle allows, install the roof exhaust
vent [4] directly above the condenser [3] of the refrigerator
(See Art01598).
- Install a baffle [5] to prevent stagnant hot air in the area
[6] above the refrigerator.
- Make sure there is less than 1/4 inch clearance [7]
between the baffle and the top of the refrigerator.
- Make sure the baffle is the full width of the inside of
the enclosure.
- If the design of the vehicle does not allow you to install the
roof exhaust vent directly above the condenser [3] of the
refrigerator (See Art01599).
- Align the roof exhaust vent [4] above the condenser [3]
of the refrigerator and move it inboard as necessary.
- Install two baffles [8] to prevent stagnant hot air in the
area [6] above the refrigerator.
- Make sure the baffles are the full width of the
inside of the enclosure.
- Make sure that the baffles are no more than 45°
from vertical [9].
- Put one baffle between the top rear edge of the
refrigerator and the inside edge of the upper
exhaust vent opening.
- Put the other baffle between the outside edge of
the upper exhaust vent opening and the side wall
of the vehicle.
- If the depth of the enclosure is 24 inches or more and is
less than 25 inches, no baffles are necessary at the rear of
the enclosure.
- If the depth of the enclosure is 25 inches or more and is
less than 26 inches, add two baffles [10] to the rear of the
enclosure (See Art01598 and Art01599).
- Put one baffle 18 inches to 18 1/2 inches above the
bottom of the enclosure [26] (4 1/4 inches to 4 3/4
inches above the top of the lower intake vent opening
REF) [27] .