T--311
2--16
Change 07/09
2.6 IW-1, IW-2, & IW-14 EVAPORATORS
The IW (In-Wall) evaporator assemblies are designed to
be installed in the rear and/or front wall of a bus.
To install the In-Wall evaporator a section of the vehicle
wall must be removed (cut-out) in order to expose the
bus structure rails necessary to mount the IW
evaporator assembly.
NOTE
Steps a through q cover the installation of an
IW-1 in the Rear of an IC bus. Additional steps
relating to Front mounted IW’s are discussed at
the end of this section.
2.6.1 Rear Mounted In-Wall Evaporator
To install the evaporator assembly in the rear of a bus
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 IW-Evaporator(s) can be safely and properly
installed in the selected area. Refer to Table 2-5,
Table 2-6, or Table 2-7 for evaporator dimensions.
Table 2-5 IW-1 EVAPORATOR DIMENSIONS
Evaporator
Width
Height
Depth
77-62162-00
45 inch
13.78 inch
7.09 inch
77-62162-01
43.9 inch
13.78 nch
7.09 inch
77-62162-02 47.15 inch 13.78 inch
7.09 inch
77-62162-03 45.00 inch 13.78 inch
7.09 inch
Table 2-6 IW-2 EVAPORATOR DIMENSIONS
Evaporator
Width
Height
Depth
77-62167-00
34 inch
12.6 inch
8.30 inch
77-62167-01
34 inch
12.60 nch
8.30 inch
77-62167-02
38 inch
12.60 nch
8.72 inch
Table 2-7 IW-14 EVAPORATOR DIMENSIONS
Evaporator
Width
Height
Depth
77-62080-11
43.9 inch
16.38 inch
7.10 inch
NOTE
When attemping to install an aftermarket In-
Wall evaporator make sure you have the cor-
rect evaporator and cooresponding mounting
brackets & cover necessary to complete the in-
wall installation. All bus manufacturers (OEM’s)
construct their buses (vehicles) differently and
it stands to reason that there will be different
mounting brackets & cover arrangements for
most OEM’s. If in doubt, contact the Carrier
Transport Air Conditioning Technical Service
Hot Line (1--800-450-2211).
c
Find center of wall area, rear or front, where the
In-Wall evaporator will be located and mark for the
evaporator cut-out. Width and Height dimensions from
Table 2-5 thru Table 2-7 is the size of the cut-out. An
additional two (2) inches of cut-out will be required on
the left side (Block-Valve side) in order to have access to
the refrigerant hose, wiring harness and drain lines (See
Figure 2-36).
INSTALLATION HINT
When installing more than one In-Wall evapora-
tor it is recommended that a template be made
from cardboard or other thin material.
NOTE
Some bus manufacturers have access panels
on the rear and front walls of their vehicles. Re-
moving these panels will allow you access to
the interior space between the inner & outer
walls (See Figure 2-57). Adding 2 inches to the
cut-out width as explained in step c is not nec-
essary.
d
Making sure there are no wires, insulation or other
obstructions behind the wall, carefully cut out and
remove the marked area. The bus structure rails will be
exposed (See Figure 2-37
).
These structure rails
should match up with the In-Wall mounting brackets.
Additional triming of the opening may be required for
ease of installation. The green painters tape is used to
keep from scratching the interior paint.
2 Inches Add-
ed To Cut-Out
Figure 2-36 In-Wall Marked For Cut-Out