Install the lower and upper vents, Notice – Thetford N81 Series Installation Manual - Current Manuel d'utilisation
Page 6

Installation Manual 6
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 Exhaust Cap
622293
N/A
N/A
Upper Roof Exhaust Vent
616319
24 in.
5 1/4 in.
Lower Metal Intake
616010
13 5/8 in.
21 5/8 in.
Upper Exhaust & Lower Intake Plastic
621156
13 3/4 in.
21 1/2 in.
2. Install the lower intake vent (See Art01598, Art01599, and Art01602):
The lower intake vent is also the service access opening for the components
on the rear of the refrigerator.
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 [9] is even with or
immediately below the floor level.
- Align the lower intake vent vertically below the coils [10] and the condenser [11] of the
refrigerator.
4. If there is more than 1/2 inch between either side of the refrigerator and the inside of the enclosure:
- Fill the space with fiberglass insulation or add a baffle to eliminate the excess clearance.
- Make sure that the rear of the batt-type insulation is between 18 - 19 inches from the face of the enclosure.
- Securely attach the batt-type insulation to the enclosure so that it remains in this position during refrigerator installation, if it
becomes wet, and in windy conditions.
10
11
9
Art01602
NOTICE
WARNING
!