Furnace York Manual

The York furnace is a high-efficiency heating system designed for residential use, featuring advanced combustion technology, variable-speed blower motors, and smart thermostat compatibility. Available in various models with AFUE ratings up to 98%, it includes safety features like flame rollout switches, pressure switches, and limit controls. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Heat exchanger, blower assembly, gas valve, igniter, flame sensor, control board, air filter, and venting system.

Feature	Description
Heat Exchanger	Stainless steel construction for durability and efficiency
Variable-Speed Blower	Adjusts airflow for optimal comfort and energy savings
Smart Thermostat Compatible	Works with York, Nest, and other smart thermostats
AFUE Rating	Up to 98% Annual Fuel Utilization Efficiency
Safety Controls	Flame rollout switch, pressure switch, high limit control
Diagnostic LED	Flashing codes for troubleshooting
Gas Valve	Precise gas flow regulation
Ignition System	Hot surface igniter for reliable startup
Air Filter	Standard 1-inch or 4-inch media filter
Venting Options	PVC or metal venting for horizontal/vertical installation

Installation

Professional installation recommended. Unpack and inspect all components.

1. Location: Install in well-ventilated area with proper clearances.
2. Gas connection: Use approved gas pipe and fittings; pressure test for leaks.
3. Electrical: Connect to 120V AC power; proper grounding required.
4. Venting: Install according to local codes; maintain proper slope.
5. Ductwork: Ensure proper sizing and sealing.
6. Thermostat: Connect low-voltage wiring to control board.

WARNING! Gas appliances can be hazardous; only qualified technicians should perform installation. Ensure proper ventilation to prevent carbon monoxide buildup.

First-Time Setup

After installation, perform initial setup and testing.

1. Power on: Turn on electrical power and gas supply.
2. Thermostat setup: Program desired temperature settings.
3. System check: Verify proper ignition sequence and airflow.
4. Safety test: Confirm all safety switches are functioning.
5. Combustion analysis: Check gas pressure and venting.

CAUTION! Never bypass safety controls. Test carbon monoxide detectors nearby.

Specifications

• Models: Various from 40,000 to 120,000 BTU
• AFUE Rating: 80% to 98% efficiency
• Voltage: 120V AC, 60Hz
• Gas Type: Natural gas or propane (conversion kit required)
• Blower Motor: Variable-speed ECM
• Sound Rating: As low as 65 dBA
• Warranty: 10-year heat exchanger, 5-year parts
• Dimensions: Varies by model (typical: 28"H x 21"W x 31"D)
• Weight: 80-150 lbs depending on model

Controls and Settings

Access controls via thermostat or furnace control board.

Thermostat: Temperature setpoint, fan control (auto/on), system mode (heat/off), programming schedule.

Control Board: Diagnostic LED (flash codes), dip switches for blower settings, reset button. Settings: Fan delay, blower speed, temperature rise adjustment. Diagnostic codes indicate specific issues when LED flashes in patterns.

Connecting Thermostat

Standard 5-wire or 6-wire thermostat connection.

1. Turn off power at furnace and thermostat.
2. Match wires: R (power), W (heat), G (fan), Y (cool), C (common).
3. Connect to furnace control board terminals.
4. Restore power and test operation.

Tip: Use color-coded thermostat wire for easy identification.

Operating Modes

Heating operation and fan control.

1. Heat mode: Thermostat calls for heat, igniter glows, gas valve opens, burner lights.
2. Fan control: Auto (runs with heat call) or On (continuous operation).
3. Multi-stage: High and low fire operation for efficiency.
4. Smart recovery: Learns cycle times for temperature maintenance.

WARNING! Never operate without proper ventilation. If you smell gas, shut off immediately and call professional.

Maintenance Procedures

Regular maintenance ensures efficiency and longevity.

1. Monthly: Check and replace air filter as needed.
2. Seasonal: Inspect burners, heat exchanger, and venting.
3. Annual: Professional cleaning and inspection.
4. Check: Gas pressure, electrical connections, safety controls.

Care & Cleaning

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

CAUTION! Do not use water or liquid cleaners. Keep area around furnace clear of flammable materials.

Regulatory Information

UL listed and ANSI certified. Complies with ASHRAE standards. Natural gas models certified to ANSI Z21.47. For support, visit www.york.com or contact 1-800-962-1266. Installation must comply with local building codes and National Fuel Gas Code.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, safety switch	Check circuit breaker, thermostat setting, filter
No heat	Gas supply, igniter, flame sensor	Verify gas valve on, check for spark, clean flame sensor
Short cycling	Dirty filter, blocked vent	Replace filter, check vent piping
Blower not working	Motor, capacitor, control board	Check for power at motor, test capacitor
Unusual noises	Loose parts, airflow restriction	Tighten components, check ductwork

Reset: Power cycle or press reset button on control board.

Service: 1-800-962-1266; www.york.com