Janitrol Gas Furnace Manual

The Janitrol Gas Furnace is a high-efficiency heating system designed for residential use, featuring natural gas operation, electronic ignition, multi-speed blower motor, safety controls, and energy-efficient heat exchanger. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Venting and Combustion Air 7. Operating Instructions 8. Maintenance Procedures 9. Safety Features 10. Regulatory Information 11. Troubleshooting

Features at a Glance

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

Feature	Description
Electronic Ignition	Hot surface igniter for reliable startup
Multi-Speed Blower	Adjustable airflow for optimal comfort
Heat Exchanger	Stainless steel construction for durability
Gas Valve	Precise gas flow regulation
Pressure Switches	Safety verification of venting
Limit Controls	Over-temperature protection
Thermostat Connection	Standard 24V control wiring
Filter Rack	Standard 1-inch filter accommodation
Service Light	LED indicator for maintenance alerts
Drain Connection	Condensate removal for high-efficiency models

Installation Requirements

Professional installation required. Ensure proper clearances and venting.

Location: Install in well-ventilated area with proper clearances to combustibles.
Gas Connection: Use approved gas piping; pressure test for leaks.
Electrical: 120V AC power supply with proper grounding.
Venting: Follow local codes for vent pipe installation and termination.
Thermostat: Connect 24V thermostat wires to control board.

WARNING! Gas furnaces produce carbon monoxide; proper venting is critical. Installation must comply with local codes.

First-Time Startup

Initial startup must be performed by qualified technician.

Verify all connections: Gas, electrical, venting, and thermostat.
Check gas pressure: Adjust manifold pressure to specifications.
Test safety controls: Verify limit switches and pressure switches function.
Check combustion: Measure flue gases for proper CO levels.
Set blower speed: Adjust for proper airflow and temperature rise.

CAUTION! Never attempt startup without proper training and equipment.

Specifications

Fuel Type: Natural Gas
Input Capacity: 40,000 - 120,000 BTU/H
Efficiency: 80% AFUE standard models; 90%+ AFUE high-efficiency
Electrical: 120V AC, 60Hz
Blower Motor: Multi-speed PSC or ECM
Gas Connection: 1/2" NPT
Vent Size: 3" - 5" depending on model
Filter Size: Standard 16x25x1 or 20x25x1
Warranty: 20-year heat exchanger, 5-year parts

Controls and Settings

Integrated control board manages all furnace operations with diagnostic capabilities.

Control Board: LED status lights, dip switch settings, terminal connections.

Thermostat Settings: Heat/Off/Auto, Fan On/Auto, Temperature setpoint. Blower Speeds: Cooling, heating, continuous fan settings adjustable via dip switches. Gas Valve: Manifold pressure adjustment screw. Limit Settings: Factory set high-limit protection.

Venting and Combustion Air

Proper venting is essential for safe operation and efficiency.

Vent Pipe: Use approved PVC or metal venting materials.
Termination: Maintain proper clearances from windows and openings.
Combustion Air: Ensure adequate fresh air supply.
Slope: Vent pipes must slope back toward furnace for condensate drainage.

Tip: Regular inspection of vent system prevents blockages and ensures safety.

Operating Instructions

Normal operation through thermostat control.

Set thermostat to desired temperature and HEAT mode.
Furnace will initiate startup sequence: inducer motor, pressure switch verification, igniter warm-up, gas valve opening.
Main burner ignition followed by blower activation after heat exchanger warm-up.
Shutdown sequence: Gas valve closes, inducer continues for post-purge, blower continues for cool-down.

WARNING! Never operate furnace with access panels removed. Keep area around furnace clear.

Maintenance Procedures

Regular maintenance ensures efficiency and longevity.

Monthly: Check and replace air filter as needed.
Annual: Professional inspection and cleaning.
Burner Cleaning: Remove and clean burners annually.
Heat Exchanger: Visual inspection for cracks or damage.
Blower: Clean blower wheel and housing.
Vent System: Inspect for obstructions or deterioration.

CAUTION! Turn off power and gas supply before performing any maintenance.

Safety Features

Multiple safety systems protect against hazardous conditions.

Safety Device	Function
Limit Switch	Shuts off burner if overheating detected
Pressure Switch	Verifies proper venting before ignition
Flame Sensor	Detects burner flame; shuts off gas if no flame
Rollout Switch	Protects against flame rollout
Gas Valve	Automatic shutoff in case of system failure

Regulatory Information

UL listed and ANSI certified. Complies with national fuel gas codes and mechanical codes. Installation must meet local building codes and regulations. Manufactured to meet ENERGY STAR® requirements for high-efficiency models. For technical support, contact Janitrol Customer Service at 1-800-XXX-XXXX or visit www.janitrol.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, safety lockout	Check power switch; verify thermostat setting; reset power.
No heat	Gas supply, ignition, filter	Check gas valve; verify pilot/igniter; replace dirty filter.
Short cycling	Filter, limit switch, airflow	Clean/replace filter; check limit switch; verify proper airflow.
Blower won't stop	Thermostat, control board	Check thermostat fan setting; inspect control board.
Unusual noises	Motor, blower, ductwork	Lubricate motor; clean blower; check for loose panels.

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

Service: 1-800-XXX-XXXX; www.janitrol.com