Thetford N500 Series Installation Manual - Manual (Page 4)

Installation Manual 4
- For N500 and N510 models, make sure the distance
[4] from the floor level to the top of the rough opening
for the upper exhaust vent is at least 47 3/4 inches or
poor cooling performance can occur.
- Align the upper exhaust vent [5] vertically above the
coils [2] and the condenser [3] of the refrigerator.
- Install a baffle [6] to prevent stagnant hot air in the area
[7] above the refrigerator (see Art 01284).
- Make sure there is less than 1/4 inch clear-
ance [8] between the baffle and the top of the
refrigerator.
- Make sure the baffle is the full width of the
inside of the enclosure.
- If you install the roof exhaust vent (see Art 01285):
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 roof cap to 10 inch-pounds
max.
- If the design of the vehicle allows, install the roof
exhaust vent [9] directly above the condenser [3] of the
refrigerator.
- Install a baffle [10] to prevent stagnant hot air in the
area [7] above the refrigerator.
- Make sure there is less than 1/4 inch clear-
ance [11] 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 of
the refrigerator:
- Center the roof exhaust vent [9] above the con-
denser [3] of the refrigerator, but move it inboard
as necessary (See Art01286 and Art01287):
- Install two baffles [12] and [13] to prevent stagnant
hot air in the area [7] above the refrigerator.
- Make sure both baffles are the full width of the
inside of the enclosure.
- Make sure that both baffles are no more than
45° from vertical.
- 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.
Assemble the Enclosure
- Make sure the enclosure is:
- 36 9/16 inches high x 23 11/16 inches wide x 24 inches
deep for N400 models.
- 42 5/8 inches high x 23 11/16 inches wide x 24 inches deep
for N500 and N510 models.
- 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.
- Make sure there are no adjacent heat sources such as a
furnace 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 Radius
Upper Roof 622293 24 in. 5 1/4 in. none
Exhaust Vent
Upper Side 617485 7 1/4 in. 18 in. none
Exhaust Vent
Lower Side 617484 9 3/4 in. 19 3/8 in. none
Intake Vent
Universal Upper 620505 6 3/16 in. 17 13/16 in. none
& Lower Vent
2. Install the lower intake vent (See Art 01282):
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 lower intake vent is
even with or immediately below the floor level.
- Align the lower intake vent [1] vertically below the coils [2]
and the condenser [3] of the refrigerator.
3. Install the upper exhaust vent (see Art01283):
- If you install the upper side exhaust vent:
- For N400 models, make sure the distance [4] from the
floor level to the top of the rough opening for the upper
exhaust vent is at least 41 3/4 inches or poor cooling
performance can occur.