Carrier Em1 Manual

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2-3 Table 2-3 DISTANCE TO BACK WALL (GEN 4)
Gen 4 Evaporator
Distance to back wall
EM-17 Inches
EM-27 Inches
EM-34.5 Inches
EM-67 Inches
EM-148.75 Inches
Table 2-4 DISTANCE TO BACK WALL (GEN 5)
Gen 5 Evaporator
Distance to back wall
EM-14.125 Inches
EM-24.125 Inches
EM-34.125 Inches
EM-74.125 Inches
Figure 2-2 Measurement To Wall (GEN 4)
4.125 In.
BUS REAR WALL
Back of Top Panel
Filter Assembly
Return Air
Mounting HolesMounting Holes
Cover
Figure 2-3 Measurement To Wall (GEN 5)
8. Locate center of...

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2-4
Figure 2-8 Locking Pliers Clamped to Carriage
Bolts
Installation Hint
In order to keep carriage bolts from being forced
out of the reinforcing rails on the bus roof, use
small locking pliers to hold the bolts in place
(See Figure 2-8). Tighten the bolts until the
evaporator is almost touching the locking pliers
(See Figure 2-9). Remove the locking pliers
and continue tightening as described in step 14
Installation Hint
For ease in installing the evaporator cover on
buses with heavily contoured...

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2-5 19.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 valve 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.
Drain Hose
Clamp, Drain Hose
Condensate Valve
Figure 2-13 Drain line & Condensate Valve
20.Fit evaporator cover over unit....

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2-6
a
bcd
e fg hi
k
l
m n
j
7/6 inch holes
a. Snap Cap
b. Pan Head Screw
c. Snap Cap washer
d. Trim Strip
e. Flexible Trim
f. Evaporator Cover
g. Evaporatorh. Mounting Channel
i. Carriage Head Bolt 3/8-16 x 4
j. Optional Spacers
k. Drain Line
l. Drain Line Clamp
m. Condensate Valve (Kazoo)
n. Locking Nut 3/8-16
Figure 2-17 GEN-4/5 Front/Rear (EM-1, 2, 6, & 14) Evaporator & Installation Hardware
Figure 2-18 Rear Mount Evaporator - Installed 

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2-7
Figure 2-19 EM-6 Rear Mounted In An Extended Roof Van
2.2.2 EM-3 EVAPORATOR GEN 4 OR GEN 5
To install the EM-3 utilize the installation procedures
outlined in Paragraph 2.2 except as noted below. See
Figure 2-20 for a typical EM-3 installation drawing.
NOTE
Threaded rod (3/8-16) is supplied with the EM-3
instead of 4 inch carriage bolts. Depending on
the contour of the bus roof the distance from the
ceiling to the evaporator could be up to 10 inch-
es (Installer purchased 3/8-16 carriage...

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2-8
3.75 IN. To Rear Wall
1
23 4
12
Apply Sealant
Side Of Bus
A
Wood
Spacers
Corner Of unit Should
JustContact Bus
Ceiling
1. 3/8 Flat Washer
2. 3/8-16 Hex Nut, Locking3. 3/8-16 Threaded Rod (Cut To Length)
4. Mounting Bar
Figure 2-20 EM-3 Installation Diagram 

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2-9 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 har-
ness routing.
d Locate and review installation instructions (See
Figure...

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2-10
Top Panel
Top Panel
Rear Hanger AssemblyFront Hanger Assembly
Gen 4/5 Evaporator CoverFront Hanger Detail
1
2 3
45 66
7
77 89
810 6
14
13 12
11
Figure 2-23 Side Mount Installation Instructions (Typical)
1. Trim Strip - Front
2. Trim Strip - Rear
3. Rear Hanger Bracket
4. 3/8-16X1 Carriage Head Bolt
5. Spacer, 1/8 Inch
6. Flat Washer
7. 3/8-16 Hex Nut, Lock
8. 3/8-16 Hex Nut
9. Front Hanger Bracket
10. Lock washer
11. 3/8-16 X 6 Carriage Head Bolt
12. 3/8-16 X 2 Hex Head Bolt
13. Front...

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2-11
Figure 2-25 EM-2 (Gen V) Side-Mount - Free Blow, Installed (Complete) 

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2-12 2.4 EM-9 DUCTED EVAPORATOR
The EM-9 evaporator is normally located slightly
forward of the bus center on the drivers side and slightly
rear of the bus center on the passenger side. See
Figure 2-29.
To install the EM-9 ducted evaporator assembly utilize
the installation procedures outlined in Section 2.3, steps
a through r, then continue with the following steps:
NOTE
Because of the ducting that will be installed the
length of the bus, refrigerant hoses and electri-
cal harnesses can enter or...