Carrier Em1 Manual

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2-13
Figure 2-27 Punching out Louver HolesFigure 2-28 End Cap With Louver
Figure 2-29 EM-9 Ducted Evaporator - Location - Completed Assembly
Figure 2-30 School Style Ducting-Passenger SideFigure 2-31 School Style Ducting-Drivers Side 

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2-14
Figure 2-32 Side Mounted Hose Routing
(Using 45°
°° °Angles)
Figure 2-33 Side Mounted Hose Routing (Straight) 

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2-15 2.5 EM-17 EVAPORATOR
The EM-17 is available in single and dual loop
applications. Due to the weight and size of the
evaporator assembly it is recommended that this type
evaporator and accompanying condenser and electrical
controls be installed only by OEM’s (Original Equipment
Manufacturers).
Reinforced mounting channels must be welded to thebus roof bows in order to support the evaporator
assembly. Examples of this application have been given
below (See Figure 2-34).
Before attempting to...

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3-1
SECTION 3
CONDENSERS
3.1 INTRODUCTION
3.1.1 Description
Condensers are normally located in the bus skirt or on
the bus roof. Their primary function is to reject heat from
the refrigerant to the exterior of the vehicle.
3.1.2 Location
Assure that the condenser will mount properly in the
location of choice. Always try to fit skirt mounted
condensers between the front and back wheels and
always as close to the bus skirt as possible. This
assures adequate air flow and avoids recirculating heat...

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3-2 3.2 CONDENSERS
Condensers are normally located on the outside of the
vehicle. Their primary function is to reject heat absorbed
by the refrigerant from the passenger compartment to
the outside air. Condensers are normally located on thevehicle skirt or on the roof. If space in the vehicle skirt is
a problem, the CM-2 and CM-3 can be stacked on each
other with a kit available from Carrier Transport Air
Conditioning (Refer to paragraph 3.7) Carrier Transport
Air Conditioning condenser assemblies...

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3-3 NOTE
To safely attach/mount the CM-2 it will require a
minimum of 4 bolts, while the CM-3 requires 6
bolts.
NOTE
Block spacers or jam-nuts may be required if
the condenser mounting area is not tight
against the bus stringers. See Figure 3-3.
Figure 3-1 3/8 Inch Carriage Bolts Thru Floorl. Mount the condenser using 3/8 inch diameter hard-
ware. See Figure 3-2.
m.Install grill/screen on condenser assembly or skirt of
bus, depending on application.
n. Connect discharge and liquid lines. Refer to...

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3-4
Figure 3-4 CM-3 Condenser Mounting (Typical)
Figure 3-5 CM-2 Condenser Mounted on an Extended Roof Van (Custom)
Figure 3-6 CM-3 Mounted In Cut-A-Way Chassis 

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3-5 3.4 Cm-5 CONDENSER
The Carrier Transport Air Conditioning CM-5
Condenser is designed to be installed in the skirt of the
bus.
To install the CM-5 Condenser utilize the installation
procedures found in paragraph 3.3.Refer to the installation drawing enclosed with the
condenser or see Figure 3-7.
Note
Because of the size and weight of the CM-5
condenser assembly, ten (10) bolts are re-
quired to safely install it to the bus floor string-
ers, Five (5) in the front and (5) in the rear.
ALTERNATE...

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3-6 3.5 Cm-7, CM-11 ROOFTOP CONDENSER
ASSEMBLIES
The Carrier Transport Air Conditioning CM-7 & CM-11
condensers are designed to be installed on the roof of
the bus.
To install a rooftop condensers utilize the following
installation procedures:
a. Select a location on the bus roof where the mounting
channels will span at least two roof bows.Note
The ideal location will be close to the evaporator
inside the bus as well as spanning two roof
bows.
b. Remove the rooftop condenser from the shipping
box....

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3-7 h. Remove mounting channels from condenser mount-
ing feet.
i. Drill 13/64 In. Dia. holes thru the bus roof outer skin
and roof bows using the mounting channel holes as a
guide. See Figure 3-10.Note
It is recommended that a drill stop be used
when drilling through the bus roof.
j. Apply sealant around all the holes and the mounting
channels. Place the channels on the bus roof.
Position mounting channel so it
spans across a minimum of two
roof bows.
Drill a 13/64 dia. hole. Use 3/16 in.
steel...