Figure 2-36 In-Wall Marked For Cut-Out; Table 2-5 Iw-1 Evaporator Dimensions; Table 2-6 Iw-2 Evaporator Dimensions; Table 2-7 Iw-14 Evaporator Dimensions - Carrier Transport Air Conditioning Installation Procedures Manual

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
77-62162-00 45 inch
77-62162-01 43.9 inch
77-62162-02 47.15 inch 13.78 inch
77-62162-03 45.00 inch 13.78 inch

Table 2-6 IW-2 EVAPORATOR DIMENSIONS

Evaporator Width
77-62167-00 34 inch
77-62167-01 34 inch
77-62167-02 38 inch

Table 2-7 IW-14 EVAPORATOR DIMENSIONS

Evaporator Width
77-62080-11 43.9 inch
2 Inches Add-
ed To Cut-Out
T--311
Height Depth
13.78 inch 7.09 inch
13.78 nch 7.09 inch
7.09 inch
7.09 inch
Height Depth
12.6 inch 8.30 inch
12.60 nch 8.30 inch
12.60 nch 8.72 inch
Height Depth
16.38 inch 7.10 inch

Figure 2-36 In-Wall Marked For Cut-Out

2--16
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.
Change 07/09