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S
3: A/C L
I
T EP
I NE
N STALLATION
Two A/C lines must be run from the APU to the evaporator in order to supply Freon to the evaporator unit.
● Begin by routing the two 8' A/C lines through the 3" hole near the evaporator unit.
● Make sure both hoses are clean and clear of debris and that all connections contain one
O-ring of the appropriate size.
● Connect the ends of each hose to the corresponding fitting on the APU.
● Connect the supplied check valve to the bottom fitting on the evaporator and connect the
5/16" line (supply) to the check valve. Connect the 13/32" (return) hose to the other valve.
● Once connected, tighten the fittings. Be sure not to over-tighten fittings as this will damage
the O-Rings.
● Cable-tie all hoses and wires to the frame up and out of the way.
IMPORTANT! D O NOT OVER-TIGHTEN THE A/C LINES, AS DAMAGE TO O-RINGS MAY OCCUR.
IMPORTANT! B E CAREFUL NOT TO BEND THE CHECK VALVE DURING INSTALLATION.
I MPORTANT! I T IS SUGGESTED THAT YOU INSTALL THE CONTROL CABLE AT THIS STEP. INSERT
THE ROUND, APU PLUG THROUGH THE HOLE AND ALLOW THE REMAINDER OF THE CONTROL
CABLE TO BE INSIDE THE TRUCK.
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