RV Products Division INSTALLATION INSTRUCTIONS FOR 8330*63(3,4)* COOL ONLY A/C 8330*635* HEAT READY A/C 8530*63** HEAT PUMP CHILLGRILLE™ FLUSH MOUNT CEILING ASSEMBLY DESIGNED AND MANUFACTURED BY THE MAKERS OF COLEMAN®-MACH® AIR CONDITIONERS
TABLE OF CONTENTS Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ceiling Plenum Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supply Ducting and Registers . . . . . . . . . . . .
GENERAL INFORMATION The flush mount ceiling plenum is designed for application in systems that utilize field fabricated (OEM supplied) cold air ducting. The ducting must be routed through the ceiling cavity (between the interior ceiling and roof). Ducting specifications are given in the section labeled “Supply Ducting and Registers”. All air conditioning equipment is subject to freeze up when evaporator air flow is sufficiently reduced.
“Cool Only” Boxes Plenum Terminal Designation Thermostat Wire Connection Function Of Low Voltage Terminal Extending From Ceiling Plenum B Y GH GL FREEZE FREEZE BLUE YELLOW GREEN GRAY WHITE Completes -12 VDC circuit for all relays Energizes coil on Compressor Relay Energizes coil on High Fan Relay Energizes coil on Low Fan Relay Evaporator Freeze Sensor Connections WHITE Energizes coil on Heat Relay W “Heat Ready” Boxes SUPPLY DUCTING AND REGISTERS A. Ducting 1.
FIGURE 1 ROUTING THERMOSTAT WIRING 1. 2. Following the instructions packed with the thermostat, determine a location for the thermostat mounting. Two wires are required: One supply lead must be +12 VDC and red in color. Following Airxcel, Inc. low voltage wiring specifications and all local and national electrical codes: For 12 VDC thermostats, it is required that the thermostat 12 volt negative connection be routed directly from the converter or battery.
Four (4) wires are required (5 wires for heat/cool boxes). These wires are as follows: (1) (1) (1) (1) (1) 3. Blue wire for -12 VDC circuit Yellow wire for compressor circuit Green wire for high fan circuit Gray wire for low fan circuit White wire for heat circuit Airxcel, Inc. low voltage wiring specifications: A. All low voltage wiring should be 18 gauge minimum. B. Low voltage wiring must be routed into the front side of the ceiling plenum opening. ROUTING 115 VAC WIRING 1.
(ON SOME UNITS, THERE WILL BE MACHINE SCREWS AT THESE LOCATIONS) FIGURE 2 CONNECT 115 VAC WIRING 1. WARNING – SHOCK HAZARD DANGER To prevent the possibility of severe personal injury or equipment damage due to electrical shock, always be sure the electrical power is disconnected or off before beginning installation. 2. WHEN USING NON-METALLIC SHEATH SUPPLY CABLES (ROMEX, ETC.), STRIP SHEATH BACK TO EXPOSE 4-6 INCHES OF THE SUPPLY LEADS.
IF OTHER THAN NON-METALLIC CABLES ARE USED FOR SUPPLY CONDUCTORS, APPROPRIATE STRAIN RELIEF CONNECTORS OR CLAMPS SHOULD BE USED. DANGER TO PREVENT THE POSSIBILITY OF SHOCK INJURY FROM APPLIANCE OPERATION: THE WHITE WIRE MUST BE CONNECTED TO NEUTRAL IN THE SERVICE BOX ENTRANCE AND THE MECHANICAL GROUND MUST BE CONNECTED TO A GROUNDING LUG IN THE SERVICE BOX OR THE MOTOR GENERATOR COMPARTMENT. IN NO CASE SHOULD CLAMPING OR PINCHING ACTION BE APPLIED TO THE INDIVIDUAL SUPPLY LEADS (NEUTRAL AND “HOT” WIRES).
TIE ALL WIRING TO INSURE NO CONTACT WITH THE HEATER OR ANY SHARP EDGES. KEEP IN MIND THAT HIGH VELOCITY AIR WILL BE ENCOUNTERED IN THIS AREA. Ş FIGURE 4 Basepan Drain Pan FIGURE 3 FIGURE 5 INSTALL AIR GRILLE ASSEMBLY 1. of the grille to the ceiling. These 4 corner screws are not provided.
Airxcel, Inc. RV Products Division P.O. Box 4020 Wichita, KS 67204 Web: Support: Sales: www.rvcomfort.com www.rvpsupport@airxcel.com www.rvpsales@airxcel.
