Red Dot Corporation P.O. Box 88790, Seattle, WA 98138 (425) 251-6897 Fax (425) 251-3934
RD-3-9821-0 REV -
For Reference Only. Subject to change without notice
Page 3 of 4
7. Set unit on cab.
8. Apply sealant around bolts to prevent water leakage into cab.
9. Install four mounting bolts.
NOTE: Do not use an impact wrench to install the mount bolts. Do not exceed 25 lb.-ft torque on the mount
bolts.
NOTE: Apply adhesive sealant to the mounting hole locations as needed.
1. Cut hose to proper length. Make cut at right angles to centerline of hose. Blow cut hose with clean dry air after
cutting to insure no foreign particles are left in hose. Install the appropriate steel bead lock fitting on the end of
the hose and crimp fitting using crimper No. 79R 1510. A #12 suction line is recommended in place of the #10
for increased cooling capacity. Use a step up fitting to accomplish this.
2. Route hoses over the top of cab and down the back wall to the compressor. On tilt cab vehicles, route hose to
the cab pivot and then to compressor.
3. Use clamps to secure hoses and prevent hose movement. Hoses must not come in contact with hot vehicle
components, exhaust manifolds, etc., and they should not be subjected to mechanical abrasions.
1. Secure drain tube with tie wraps. Attach to refrigerant hoses only if they run downhill properly.
NOTE: Be cautious not to over-tighten tie wraps. Otherwise the drainage may be restricted.
2. Inspect to make sure that drain tubes are not kinked, especially at back of cab.
NOTE: Unit is wired for negative ground.
1. Disconnect battery.
2. Orange and brown wires (condenser fan circuit): Connect the orange wire to the ignition switch supplied
power through a 30 amp circuit breaker (15 amp/24V) and the brown wire to ground.
3. Red wire and black wire (motor blower circuit): Connect the red wire to ignition switch supplied power
through 30 amp circuit breaker (15 amp/24V) and the black wire to ground.
4. Green Wire (compressor clutch circuit): Connect to compressor clutch. Route the wire around the hinge
point before connecting to compressor clutch on tilt-cab installations.
5. See Wiring Schematic (RD-3-9609) provided in installation kit.
1. Reinstall the headliner (if it was removed).
2. Place cable control converter through control panel ("D" hole from inside of plenum) then tighten the nut on
the outside of the panel over the converter. Push the control knob provided in the kit over the shaft of the
converter. (connect unit wiring to the rocker switch and the fan switch, refer to the Wiring Schematic for
terminal information).
3. Place the control/distribution plenum assembly up to headliner so that it covers the large rectangular cutout
(curved side of the plenum toward the condenser end of the unit) and start one of the mount bolts.
4. Start the remaining bolts and tighten plenum assembly bolts evenly until the plenum fits snugly against the
headliner.
NOTE: Do not use an impact wrench to install these bolts. Do not exceed 8 lb.-ft torque for plenum bolts.
5. Remove the filter from the recirc/filter plenum by turning the quarter turn fastener counterclockwise and then
removing the grill and filter.
6. Place the recirc/filter plenum up to the headliner so that it covers the small rectangular cutout (curved side
either away from or toward the condenser) and start one of the bolts.
REFRIGERANT HOSE INSTALLATION
SECURE DRAIN HOSES
AIR DIFFUSER AND RECIRC PLENUM
SECURE DRAIN HOSES