Chrysler Airtemp Furnace Manual

The Chrysler Airtemp Furnace is a high-efficiency heating system designed for residential and light commercial applications. This manual covers installation, operation, maintenance, and troubleshooting for various Airtemp furnace models. Features include electronic ignition, variable-speed blower motors, multiple heat stages, and advanced safety controls. Below are key sections for safety, features, installation, operation, and maintenance procedures.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Thermostat 7. Operating Procedures 8. Maintenance Schedule 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heat exchanger, blower assembly, electronic ignition system, gas valve, limit switches, pressure switches, and control board.

Feature	Description
Electronic ignition	Hot surface igniter for reliable startup
Variable-speed blower	Adjustable airflow for efficiency and comfort
Multi-stage heating	Two or more heat stages for precise temperature control
Safety controls	Flame rollout switches, pressure switches, limit controls
Gas valve	Precise gas flow regulation
Control board	Microprocessor-based system monitoring
Filter access	Easy-access filter compartment
Drain connections	Condensate drain ports for high-efficiency models
Service ports	Pressure test ports for diagnostics
LED status lights	Diagnostic indicators for troubleshooting

Installation

Unpack and inspect all components. Ensure proper clearances and venting requirements.

Location selection: Choose level surface with adequate combustion air and service access.
Gas connection: Use approved gas piping; pressure test for leaks before operation.
Electrical connection: Connect to dedicated 120V circuit; proper grounding required.
Venting: Install according to local codes; use approved vent materials.
Thermostat wiring: Connect compatible thermostat following wiring diagram.

WARNING! Gas appliances can be hazardous; installation must comply with local codes and be performed by qualified technician.

First-Time Setup

Complete installation verification before initial startup.

Gas pressure check: Verify inlet and manifold pressures per specifications.
Vent verification: Confirm proper draft and vent system integrity.
Electrical checks: Verify proper voltage and polarity.
System startup: Follow lighting instructions; observe first ignition cycle.
Temperature rise: Measure and adjust blower speed if necessary.

CAUTION! Never bypass safety controls. Ensure proper combustion air supply.

Specifications

Heating Capacity: 40,000 to 120,000 BTU/hr depending on model
Efficiency: 80% to 96% AFUE
Gas Type: Natural gas or propane (conversion kit required)
Electrical: 120V, 60Hz, 15 amp circuit
Blower Motor: Variable-speed ECM or PSC
Heat Stages: Single-stage, two-stage, or modulating
Venting: Category I (standard) or PVC (high-efficiency)
Dimensions: Varies by model; check specific model data
Warranty: Limited lifetime heat exchanger, 5-10 years parts

Controls and Settings

Access control board via front service panel. Thermostat controls system operation.

Control Board: LED status lights, diagnostic codes, DIP switch settings, service test mode.

Temperature Settings: Thermostat controls heating setpoints. Blower Settings: Adjust blower speed for proper temperature rise. Gas Pressure: Factory set; verify during installation. Limit Controls: Automatic high-limit protection. Pressure Switches: Verify proper vent operation. Ignition Control: Governs ignition sequence and flame monitoring.

Connecting Thermostat

Compatible with most 24V thermostats. Follow wiring diagram for proper connections.

Turn off power to furnace before wiring.
Identify thermostat terminals: R, W, G, Y, C.
Connect matching wires from furnace to thermostat.
For multi-stage systems: Additional W2, Y2 terminals.
Secure wiring and restore power.

Tip: Use thermostat compatible with your furnace staging configuration.

Operating Procedures

Normal operation controlled by thermostat. System includes automatic safety features.

Thermostat call: Set thermostat above room temperature for heat.
Startup sequence: Inducer motor starts, pressure switch proves, igniter heats.
Ignition: Gas valve opens, burner ignites, flame sensor confirms.
Blower operation: Blower starts after heat exchanger warms.
Shutdown: Burner shuts off when thermostat satisfied; blower continues for heat dissipation.

WARNING! Never operate with access panels removed. Monitor for unusual noises or odors.

Maintenance Schedule

Regular maintenance ensures efficiency and longevity.

Frequency	Maintenance Task
Monthly	Check and replace air filter if dirty
Annually	Professional inspection and cleaning
Annually	Check heat exchanger for cracks
Annually	Clean burners and ignition system
Annually	Verify gas pressure and combustion
Annually	Inspect vent system and drains
Annually	Lubricate blower motor if required

Care & Cleaning

Turn off power and gas supply before cleaning. Use soft brush and vacuum for dust removal.

CAUTION! Do not use water or chemical cleaners on electrical components. Keep combustion area clear of debris.

Regulatory Information

UL listed; ANSI Z21.47 compliant. Installation must comply with National Fuel Gas Code (NFPA 54), local building codes, and manufacturer specifications. For technical support, contact Chrysler Airtemp at 1-800- AIRTEMP or visit www.chryslerairtemp.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Thermostat, power, gas supply	Check thermostat setting, circuit breaker, gas valve
Blower won't run	Motor, capacitor, control board	Verify power to blower; check capacitor; inspect control board
Frequent cycling	Filter, limit switch, airflow	Replace filter; check for restricted airflow; verify limit operation
Burner won't ignite	Igniter, gas valve, pressure switch	Test igniter for continuity; verify gas pressure; check pressure switch
Lockout condition	Safety device activation	Reset power; check diagnostic lights; identify fault code
Unusual odors	Dust buildup, combustion issues	Clean system; verify proper combustion; check for gas leaks

Reset Procedure: Turn power off for 30 seconds, then restore.

Service: 1-800-AIRTEMP; www.chryslerairtemp.com