Figure 2-22 Side-Mount Template; Figure 2-23 Drain Line Elbows - Carrier Transport Air Conditioning Installation Procedures Manual

2.3 SIDE MOUNTED EVAPORATOR - EM-1, EM-2,
EM-6, EM-7, & EM-14
To install a side mounted evaporator assembly utilize
the following installation procedures:
a Un-pack the evaporator and check for any obvious
damage (Refer to Sec 1.8).
b Check the interior of the bus/vehicle to make sure
the evaporator(s) can be safely and properly installed in
the selected area.
c Plan refrigerant hose, drain lines, and electrical
harness routing.
d Locate and review installation instructions (See
Figure 2-24). Review system piping and wiring
diagrams for proper hose and fitting size, plus the proper
wiring harness. Refer to Section 4 for detailed
instructions regarding hose and harness routing.
e Locate full-scale drawing of the side mounted
evaporator you are installing. Glue drawing onto
cardboard or other thin material. Cut-out template.
f Hold template to bus ceiling and back wall. See
Figure 2-22.
Rear Mounting Rail

Figure 2-22 Side-Mount Template

CAUTION
When selecting a location for installing the
evaporator it is highly recommended that
two roof bows are used to secure the
mounting rails.
g Mark location of front and rear mounting brackets.
h Insert carriage bolts into the rear mounting bracket
before installing.
i Install the mounting brackets using steel rivets
supplied in the installation kit. Insure all predrilled holes
in mounting rails are utilized.
j Loosely assemble mounting hardware onto front
hanger brackets as shown in installation drawing and
Figure 2-24.
Front Mounting Rail
2--9
k Loosely install evaporator assembly onto the front
and rear mounting brackets.
l Tighten rear mounting hardware.
m Level evaporator assembly front to rear using a
small level and the 3/8-16 jam-nuts (See Figure 2-23).
n Tighten all jam-nuts and lock-nuts on front and rear
mounting brackets and evaporator assembly.
o Connect refrigerant hoses (Liquid and Suction) and
electrical harnesses at this time. Refer to Section 4 for
proper routing of hoses and harnesses.
p After the liquid and suction lines have been
connected and you are sure there are no leaks, wrap
(coat) the suction fitting and the block valve with
"no-drip" tape in order to keep them from dripping
condensate into the passenger compartment.
Level
Drain Line Elbow

Figure 2-23 Drain Line Elbows

q Connect two drain lines to the evaporator assembly.
Drain lines must always run downhill, and care must be
taken not to kink the drain lines. Plastic 90° elbows may
be required to keep drain lines from kinking. If in doubt,
use the elbows supplied. See Figure 2-23.
r After the drain lines have been routed to the outside
of the bus they should be cut approximately 6 inches
below the floor. Install condensate ("kazoo") tubing over
the ends of the drain lines. This prevents air from being
drawn through the lines into the evaporator which will
stop the flow of condensate from the drain pan. It also
prevents insects from entering the drain lines.
s Fit evaporator cover over unit. The evaporator
cover must be trimmed to fit the contour of the bus
ceiling and wall.
t Install trim strip to the evaporator cover and side
wall. Some trimming could be involved (See
Figure 2-25).
u Mark and trim the front trim strip. Most trimming will
be along the side of the trim strip.
v Install evaporator cover using hardware supplied.
w Clean evaporator and hose covers with a mild
cleaning solution. Clean all debris from the interior of the
bus.
No-Drip Tape
T--311