York Affinity 9 V Series Furnace Manual

The York Affinity 9 V Series is a high-efficiency gas furnace featuring variable-speed technology, AFUE ratings up to 98%, quiet operation, durable heat exchanger construction, advanced diagnostic controls, multi-speed blower motor, direct spark ignition, and compatibility with various thermostat systems. Designed for residential heating applications with natural gas or propane capability. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Variable-speed ECM blower motor, aluminized steel heat exchanger, integrated control board, pressure switches, gas valve, igniter, flame sensor, condensate drain system.

Installation Requirements

Proper installation requires qualified HVAC technician. Verify local codes and obtain permits.

1. Location selection: Dry, level area with adequate clearance for service access.
2. Venting: PVC pipe system for direct vent or conventional venting as specified.
3. Gas supply: Proper gas line sizing and pressure regulation.
4. Electrical: 120V AC power supply with proper grounding.
5. Drainage: Condensate drain line routed to approved disposal.

WARNING! Gas furnaces produce carbon monoxide; proper venting is critical. Installation by unqualified personnel may create hazardous conditions.

Initial Setup & Startup

Initial startup must be performed by qualified technician.

1. System verification: Check all connections, gas pressure, electrical wiring.
2. Venting inspection: Verify proper vent pipe installation and clearances.
3. Gas pressure adjustment: Set manifold pressure to specifications.
4. Blower speed configuration: Adjust for proper airflow and static pressure.
5. System operation: Test ignition sequence, flame verification, safety controls.
6. Thermostat configuration: Program for proper heating cycles and fan operation.

CAUTION! Never bypass safety controls. Verify proper operation before leaving installation.

Technical Specifications

• AFUE Rating: Up to 98% efficiency
• Input Capacity: 40,000 to 120,000 BTU/h models available
• Gas Type: Natural gas or propane (conversion kit required)
• Electrical: 120V AC, 60Hz, 15 amp circuit
• Blower Motor: Variable-speed ECM
• Sound Rating: Ultra-quiet operation
• Venting: PVC, CPVC, or ABS pipe (check local codes)
• Operating Temp Range: -30°F to 150°F ambient
• Warranty: Limited lifetime heat exchanger, 10 years parts

Controls and Operation

Integrated control board manages all furnace operations with LED status indicators.

Control Board Features: Self-diagnostic capability, status light codes, communication terminal, safety lockout, variable-speed control.

Operation Sequence: Thermostat call for heat, inducer motor start, pressure switch verification, igniter activation, gas valve opening, flame sensor verification, blower activation. Normal shutdown: Gas valve closes, blower continues for post-purge cycle.

Venting and Combustion Air

Proper venting is critical for safe operation and efficiency.

1. Direct vent: Separate intake and exhaust pipes through wall or roof.
2. Conventional vent: Single pipe exhaust with indoor combustion air.
3. Pipe sizing: Follow manufacturer specifications for pipe diameter and length.
4. Clearances: Maintain required clearances from combustible materials.
5. Termination: Proper outdoor termination location away from windows and doors.

Tip: Regular inspection of vent pipes for blockage or deterioration is essential.

Maintenance Procedures

Annual maintenance by qualified technician recommended.

1. Filter replacement: Monthly inspection, replace as needed (30-90 days typical).
2. Heat exchanger inspection: Visual check for cracks or corrosion.
3. Burner cleaning: Remove debris from burners and ignition system.
4. Blower cleaning: Clean blower wheel and housing.
5. Drain system: Clear condensate lines and trap.
6. Electrical: Check connections and component operation.
7. Gas system: Verify pressure and leak check.
8. Venting: Inspect for obstructions or damage.

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

Safety Features

Multiple safety systems protect against hazardous conditions: Flame rollout switches, high limit switches, pressure switches, flame sensor, igniter control, lockout protection, condensate overflow switch.

Care & Cleaning

Regular maintenance ensures optimal performance and longevity.

CAUTION! Use only manufacturer-approved replacement parts. Keep area around furnace clean and free of combustible materials. Never store chemicals or flammable materials near furnace.

Regulatory Information

UL certified for safety standards. Complies with ANSI Z21.47 standards for gas-fired central furnaces. CSA certified for Canadian installations. Manufactured to meet or exceed DOE energy efficiency standards. For technical support, contact York International at 1-800-910-YORK or visit www.york.com.

Troubleshooting

Reset: Power cycle furnace at disconnect or circuit breaker.

Service: 1-800-910-YORK; www.york.com