Goodman Janitrol Furnace Manual

The Goodman Janitrol furnace is a high-efficiency gas furnace designed for residential heating applications. This manual covers installation, operation, maintenance, and troubleshooting for various Goodman Janitrol furnace models. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

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

Features at a Glance

Key components: Gas valve, heat exchanger, blower motor, ignition system, thermostat connection, pressure switches, limit switches.

Feature	Description
Gas valve	Controls gas flow to burners
Heat exchanger	Transfers heat from combustion to air
Blower motor	Circulates heated air through ductwork
Ignition system	Electronic ignition for reliable startup
Thermostat connection	For temperature control input
Pressure switches	Safety device for venting system
Limit switches	Prevents overheating
Filter access	Easy filter replacement
Diagnostic lights	LED indicators for troubleshooting
Service ports	For pressure testing and service

Installation

Unpack and inspect contents. Ensure proper location and clearances.

Select location: Choose area with proper clearances and ventilation.
Gas connection: Use approved gas piping and fittings.
Electrical connection: Connect to proper voltage supply with disconnect.
Vent system: Install approved vent piping according to codes.
Ductwork: Connect supply and return ducts properly.

WARNING! Gas appliances can be dangerous; follow all safety codes. Professional installation recommended.

First-Time Setup

Power on furnace; follow startup procedure.

Check gas supply: Ensure gas valve is open and gas is available.
Electrical power: Turn on disconnect switch and verify power.
Thermostat setup: Set thermostat to heating mode and desired temperature.
Initial startup: System will go through ignition sequence.
Verify operation: Check for proper heating and airflow.

CAUTION! Ensure proper ventilation and clearances before operation.

Specifications

Fuel Type: Natural gas or propane
Efficiency: Up to 96% AFUE
Input Capacity: 40,000 - 120,000 BTU/h
Voltage: 120V AC, 60Hz
Blower Type: Multi-speed direct drive
Heat Exchanger: Stainless steel primary and secondary
Ignition: Hot surface or intermittent pilot
Vent Size: 2" - 3" PVC depending on model
Operating Temp: Standard indoor conditions

Controls and Settings

Access control board via front panel. Integrated control module with diagnostic capabilities.

Thermostat: HEAT/COOL/OFF, FAN AUTO/ON, temperature setting, system switch.

Control Board: Power switch, diagnostic LED, dip switches for configuration. Settings: Fan speed, temperature rise, timing sequences. Safety: Limit switches, pressure switches, rollout switches. Diagnostic: LED flash codes for troubleshooting.

Connecting Components

Thermostat: Low voltage connections. Gas line: Black iron or CSST. Electrical: 120V supply. Vent: PVC piping. Ductwork: Supply and return connections.

Turn off power and gas before connecting.
Match wires to terminal designations (R, W, G, Y, C).
Use proper pipe dope and thread sealant for gas connections.
Ensure vent piping is properly sloped and supported.

Tip: Always verify connections with manufacturer's wiring diagram.

Operation

Heating cycle sequence and normal operation.

Call for heat: Thermostat signals furnace to start.
Inducer motor: Starts to prove draft and clear combustion chamber.
Ignition: Hot surface igniter glows and gas valve opens.
Burner operation: Flame is established and verified.
Blower operation: Blower starts after heat exchanger warms up.
Cycle completion: Thermostat satisfied, gas valve closes, blower continues.
Safety shutdown: System monitors for unsafe conditions.

WARNING! Never bypass safety devices. Service by qualified technician only.

Maintenance Features

Filter replacement: Monthly inspection, replace as needed. Annual maintenance: Professional inspection and cleaning recommended. Diagnostic codes: LED flash patterns indicate specific issues.

Care & Cleaning

Turn off power before servicing. Clean burners and heat exchanger annually. Replace air filter regularly.

CAUTION! Do not operate without filter. Keep combustion area clear of debris.

Regulatory Information

ANSI Z21.47: Certified for safety standards. UL listed: Meets electrical safety requirements. Local codes: Installation must comply with all applicable building codes. For support, visit www.goodmanmfg.com or contact 1-877-466-8626.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Thermostat/power/gas	Check thermostat setting; verify power and gas supply; check filter.
Furnace not starting	Safety lockout	Check diagnostic LED; reset power; verify venting.
Short cycling	Dirty filter/overheating	Replace filter; check airflow; verify temperature rise.
Blower not running	Motor/control issue	Check blower door switch; verify motor operation; check capacitor.
Unusual noises	Mechanical issues	Inspect blower wheel; check heat exchanger; verify inducer motor.

Reset: Power cycle if locked out. Check diagnostic codes for specific issues.

Service: 1-877-466-8626; www.goodmanmfg.com