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Related Manuals for Airxcel 9000 Series
Summarization of Contents
I. BASIC COMPONENTS
Compressor
Hermetic sealed compressor with internal motor, protected by an overload switch.
Condenser Coil
Transfers heat from refrigerant to outdoor air, increasing air temperature.
Metering Device
Reduces refrigerant pressure via a cap tube, causing temperature drop before the evaporator.
Evaporator Coil
Transfers heat from indoor air to cold, low-pressure refrigerant.
II. AIR HANDLING
Fan Motor
Double-ended motor drives blower for air circulation and fan for condenser coil.
Fan Motor Check Procedure
Steps to verify fan motor operation, including lead connections and resistance checks.
III. ELECTRIC POWER CIRCUITS
Safety
Critical safety advice regarding electrical shock hazards and the need for caution and expertise.
Power Supply – from Commercial Utility
Details wire size (20A, 12 AWG min), circuit protection, and color code for commercial power.
Voltage
Required 115V (USA) with acceptable tolerance (103.5V-126.5V) for optimal performance.
IV. CAPACITORS
Run Capacitor
Improves motor efficiency during operation by connecting between start and run terminals.
Start Capacitor
Provides high starting torque for the compressor, disconnected by the start relay at speed.
Start (Potential) Relay
Uses internal contacts to switch the start capacitor in parallel with the run capacitor.
Positive Temperature Coefficient Resistor
PTCR device replaces potential relay, using resistance to remove the start capacitor.
V. METERS
Ammeter and Its Use
Measures electric current non-invasively using snap-around jaws; essential for technicians.
Ohm Meter and Its Use
Measures electrical resistance in ohms, requiring calibration and proper probe contact.
Volt Meter and Its Use
Measures voltage (electron moving force) between two points in a circuit.
VI. FREE DELIVERY CEILING ASSEMBLIES
Selector Switch – Free Delivery Ceiling Assemblies
Controls fan speed, blower-only modes, and compressor operation for cooling.
Thermostat (Mechanical Rotary)
Senses return air temperature to control on-off cycles for compressor or heating element.
Heating Element
A 1600-watt resistance heater used in heating mode, drawing 13.3A at 120V.
Limit Switch
A safety switch that opens the circuit if the heater overheats due to low airflow.
WIRING DIAGRAMS
9330X713, 9330X714 COOL ONLY CEILING ASSEMBLIES
Presents the wiring schematic for specific cool-only ceiling assembly models.
9330X715,9330X916 HEAT/COOL CEILING ASSEMBLIES
Displays the wiring schematic for specific heat/cool ceiling assembly models.
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