Installation manual

48
DE Split-Evaporator Installation
Sealing Air Gaps
NOTE: The following areas must be properly sealed to prevent air
leakage and allow the unit to operate correctly.
1. Area Above the DE Evaporator Section - If the remote tubing is routed
across the trailer to the curbside compartment, this area requires foam
block be cut to fit around the insulated tubing and harness.
2. Gap Between Top of Evaporator and Trailer Header - This gap (below
trailer header and above the evaporator) should be filled with foam
insulation or caulking.
3. Front Edge of Center Partition - Although the front edge of the center
wall partition may have a conforming gasket it cannot conform to
severe steps anywhere along the bulkhead or above the evaporator. The
long foam adhesive backed strip (1.00 in. x 4.00 in.) supplied in the DE
installation kit may be used here, if necessary.
4. Top of Slanted Center Divider in Bulkhead - This area needs gaskets
to conform and seal against the bottom of the internal center divider
between the two DE evaporator. This prevents air leakage between the
two return air areas. Because the evaporators are offset towards the
trailer curbside, this center divider is located 11.5 in. (292 mm) to the
curbside of the trailer center line.
5. Front Wall and Center Divider Interface - Special care must be taken
because the insides of the trailer walls are not necessarily flat. If the
slanted center divider in the bulkhead is not flexible, foam tape and/or
caulking must be added to conform to the front wall.
6. Trailer Trough Area - The center divider in the bulkhead must extend
to the bottom of the floor/trough, even though the bulkhead itself must
end 6 to 10 in. (152.5 to 254 mm) above the trailer floor. This lower
extension of the divider should be flush with the bulkhead surface to
make it easy to seal the front edge of the center partition.
I = Standard Bulkhead
II = Foam Blocks (installer supplied)
III = Full Height Bulkhead