Classic Auto Air Perfect Fit Series Control & Operating Instructions

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“PERFECT FIT SERIES”

FACE / DEFROST DOOR

HEAT / DEFROST DOOR

BLOWER SWITCH

TEMPERATURE LEVER

specializing in “AIR CONDITIONING, PARTS AND SYSTEMS” for your classic

IN-DASH

HEAT/ COOL/ DEFROST

1970-72 CHEVROLET CHEVELLE/ EL CAMINO

NOTE: INSTRUCTIONS DEPICT CHEVELLE

CONTROL & OPERATING INSTRUCTIONS

The controls on your new “Perfect Fit” system. Offers complete comfort capabilities in

virtually every driving condition. This includes Temperature control in all of the modes.
This system also provides the ability to blend the air between Face, Heat, and Defrost
modes simultaneously.

THE PICTURE YOU SEE ABOVE SHOWS THE CONTROLS IN THE DEFROST
MODE. THIS MEANS THAT ALL OF THE AIR WILL BE DISTRIBUTED
THROUGH THE DEFROST DUCT ASSEMBLY. THIS ALSO HAS THE
TEMPERATURE LEVER IN THE COLD POSITION. WITH THE CONTROLS IN
THIS POSITION YOU WILL GET THE AIR THROUGH THE SYSTEM AT ROOM
TEMPERATURE.

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CAUTION: ALL OF THE OUTSIDE VENTS MUST BE CLOSED WHEN THE

SYSTEM IS IN THE A/C MODE. THIS WILL ALLOW THE A/C SYSTEM TO
FUCTION AT ITS MAXIMUM PERFORMANCE LEVEL.

THE FOLLOWING SUMMARY WILL DESCRIBE EACH OF THE CONTROL
LEVERS FUNCTION.

FAN SPEED SWITCH: There are 3 speeds plus Off. When the switch is in the off

position it will disconnect the 12V power to the Blower Motor and the A/C Clutch. This
will shut down the entire system. When the switch is moved to any of the blower speeds
1,2 or 3 there is 12V supplied to the Micro-Switch which is mounted on the defrost air
housing.

HEAT MODE: When the heat lever is moved towards the right, it will allow the air to

go between the floor ducts and the face louvers. Only when the lever is in the far right
position will all of the air stop coming out of the face louvers and blow on the floor.

TEMPERATURE CONTROL: The temperature lever as shown is in the

COLDEST temperature position. As the lever is pushed to the right the temperature of
the discharged air will rise to the HOTTEST point.
Note: The temperature lever will function in any of the modes.

DEFROST MODE: This system allows for Dehumidification of the air in the

Defrost mode. The Heat lever must be in the right position. The bottom lever must be at
the far right position in order to get the maximum air flow to the windshield and to trip
the Micro-Switch. This will activate the Compressor Clutch.

AIR CONDITIONING MODE: The picture shows the controls in the

Defrost Mode (air-flow to the windshield).
When Air Conditioning is required the compressor clutch must be activated. This is
accomplished by pushing the top lever to the far left position. The bottom lever must be
in the far right position to activate the clutch. When the compressor is activated the
Temperature Lever will control the air from maximum cold through maximum heat.

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specializing in “AIR CONDITIONING, PARTS AND SYSTEMS” for your classic

INSTALLATION INSTRUCTIONS

1970-72 CHEVROLET CHEVELLE/ EL CAMINO

NOTE: INSTRUCTIONS DEPICT CHEVELLE

Congratulations!! You have just purchased the highest quality, best performing A/C

system ever designed for you Classic Car. To obtain the high level of performance and

dependability our systems are known for, pay close attention to the following

instructions.

Before beginning the installation check the box for the correct components.

Evaporator

Face Duct Assembly

Defrost / Heat Duct Assembly

Inlet Air Blockoff Assembly
Firewall Blockoff Assembly

Flex hose 2” dia. x 2ft. – 2ea.

Flex hose 2” dia. x 3ft. – 1ea.
Flex Hose 2 ½”dia. x 2ft. – 2ea.
Flex Hose 2 ½”dia. x 3ft. – 1ea.

Sack Kit Hardware

Sack Kit Control

Center Air Plenum

IMPORTANT INFORMATION

1. Before starting, read the instructions carefully and follow proper sequence.

2. Check condition of engine mounts. Excessive engine movement can damage hoses to A/C, heater,

radiator, transcooler, and power steering systems.

3. Before starting, check vehicle interior electrical functions. i.e. interior lights, radio, horn, etc. When

ready to start installation, disconnect battery.

4. Fittings. Use one or two drops of lubricant on O’rings, threads and rear of bump for O’ring where

female nut rides. Do not use thread tape or sealants.

5. Always use two wrenches to tighten fittings. Try holding in one hand while squeezing together while

other hand holds fitting in position.

6. Shaft seals in a small percentage of compressors will require as much as 3-4 hours run time to

become leak free.

7. Compressors supplied in our complete systems are filled with proper amount of oil.

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8. Compressor requires technician to hand turn 15-20 revolutions before and after charging with

liquid from a charging station before running system. Compressors with damaged reed valves
cannot be warranted.

9. Should you have any technical questions, or are suspect of missing, or defective parts, call us

immediately. Our knowledgeable staff will be glad to assist you.

YOU CAN NOW BEGIN THE INSTALLATION

Remove (6) screws at locations
shown to remove the dash pad.

In order to remove the heater assembly. It is
necessary to remove Blower Housing Assembly
from the engine side of the firewall.

Carefully lift vehicle and place support stands under
center of the vehicle as shown.

Remove the (8) bolts. Lower the inner fender well on the passenger side.

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Screw location behind fender well

Hood hinge
assembly

Remove (7) screws around the perimeter of the Blower Housing. The lower left screw is
located behind the fender well.

On engine side of Firewall behind Hood hinge
assembly is one of the (7) screws holding the blower
housing. Remove and retain all of the original
hardware.

Unplug electricals from the blower motor and remove
blower assembly from the vehicle.

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Heater Hoses

Reinstall Inner Fender Well using the original hardware.

DRAIN COOLANT FROM RADIATOR.
Remove Heater hoses from heater coil at
firewall.

Lower heater box on inside of car to the floor
board. To remove heater box from the vehicle (3)
control cables and the electrical must be
disconnected from the housing. Disconnect (1)
control cable and electrical plug located on top of
the heater box.

Disconnect (1) control cable located
next to the defrost outlet.

Disconnect final control cable located all the way
to the left of the heater assembly.

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You can now remove heater assembly from inside of the vehicle.

The blockoff plate above the control
head can be removed by (2) screws.

One as shown and the other on driver’s

side of the blockoff. Retain original
hardware. Remove the center speaker
assembly and retain all original
hardware.

The control head can be removed by pulling (4)
screws behind the dash. There are (2) screws on
each side of the control head. The (2) shown are on
the passenger side of the control head. Retain
original hardware.

The fresh air duct on the passenger side of the vehicle can be
removed by cutting duct with a knife and removing it from the

vehicle. The driver’s side fresh air duct can also be removed

by cutting it.

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DRILL ¾” DIA. HOLE
¾” BETWEEN CENTRES

¾ “DIA.

Locate behind glove box and on firewall the
hole that previously mounted the heater box.
Drill (1) ¾” dia. hole for the drain tube as
shown.

Locate wire harness that powered the original
heater assembly and pull through the control
head hole in the dash. Locate the brown wire
and cut it at the plug. Attach (1) male insulated
spade connector to the brown wire.

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PASSENGER SIDE

DRIVERS SIDE

Remove the original defrost duct.
This is done by removing (4) screws
at top edge of the dash.
It will be necessary to cut the defrost
duct in half to remove it.

Attach passenger side defrost template to
passenger side of the defrost duct. Cut the duct
as shown. Attach ¼ x ½ open cell foam around
the duct inlet. Slide passenger side defrost duct
adapter over the foamed inlet to the edge of the
foam. Pre-Drill duct with a 5/32 drill bit on both
sides of the duct. Attach the adapter to the duct
using (2) #10 x 5/8 PHP screws.