bryant furnace plus 90 owners manual

The Bryant Furnace Plus 90 is a high-efficiency gas furnace with 90% AFUE rating, featuring variable-speed blower technology, electronic ignition, multi-speed operation, built-in diagnostic system, quiet operation, and compatibility with various thermostat systems. 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. Operating Instructions 7. Maintenance Procedures 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-efficiency heat exchanger, variable-speed blower motor, electronic ignition system, diagnostic LED, gas valve, filter access panel, venting system.

Feature	Description
AFUE Rating	90% Annual Fuel Utilization Efficiency
Blower Motor	Variable-speed ECM technology
Ignition System	Hot surface electronic ignition
Diagnostic System	LED status indicator for troubleshooting
Gas Valve	Precise gas flow regulation
Filter System	Standard 1-inch filter access
Venting	PVC pipe compatible
Noise Level	Quiet operation design
Thermostat Compatibility	Works with standard and programmable thermostats
Safety Controls	Multiple safety shut-off features

Installation Requirements

Professional installation recommended. Ensure proper location and clearances.

Location: Install in dry, well-ventilated area with proper clearances to combustibles.
Gas Connection: Use approved gas piping; pressure test required.
Electrical: 120V AC power supply with proper grounding.
Venting: Install PVC vent pipes according to local codes.
Drain Line: Connect condensate drain line to proper disposal.

WARNING! Installation must be performed by qualified HVAC technician. Improper installation can cause fire, explosion, or carbon monoxide poisoning.

First-Time Setup

Initial startup must be performed by qualified technician.

System Check: Verify all connections are secure and proper.
Gas Pressure: Set gas pressure to manufacturer specifications.
Venting: Confirm proper vent installation and operation.
Electrical: Check voltage and proper grounding.
Test Operation: Run system through complete cycle to verify operation.

CAUTION! Do not attempt first-time startup without proper training and equipment.

Specifications

AFUE Rating: 90%
Input BTU/H: 40,000 - 120,000 (varies by model)
Output BTU/H: 36,000 - 108,000 (varies by model)
Gas Type: Natural Gas
Electrical: 120V AC, 60Hz
Blower Type: Variable-speed ECM
Ignition: Hot surface electronic
Venting: PVC pipe required
Filter Size: Standard 1-inch
Warranty: Limited lifetime heat exchanger warranty

Controls and Settings

Access control panel via front access door. LED diagnostic light indicates system status.

Thermostat Controls: POWER, FAN (Auto/On), HEAT mode, temperature setting.

System Settings: Temperature setpoint, fan operation mode, system mode selection. Diagnostic Codes: LED flash patterns indicate specific system status and error codes. Safety Controls: High limit switch, pressure switch, flame sensor, roll-out switch.

Operating Instructions

Normal operation through thermostat control.

Set thermostat to desired temperature in HEAT mode.
Select fan operation: AUTO (runs with heat cycle) or ON (continuous operation).
System will automatically cycle to maintain set temperature.
Monitor system for normal operation sounds and airflow.

Tip: Keep thermostat away from heat sources and direct sunlight for accurate temperature control.

Maintenance Procedures

Regular maintenance ensures optimal performance and efficiency.

Monthly: Check and replace air filter as needed.
Seasonal: Professional inspection before heating season.
Annual: Professional maintenance including heat exchanger inspection, burner cleaning, and safety check.
Visual Inspection: Regular check for unusual noises, odors, or performance issues.

WARNING! Turn off power and gas supply before performing any maintenance. Only qualified technicians should service internal components.

Safety Features

Multiple safety systems protect against hazardous conditions. High limit switch: Prevents overheating. Pressure switch: Ensures proper venting. Flame sensor: Confirms burner ignition. Roll-out switch: Detects flame roll-out condition. Carbon monoxide detection recommended for additional safety.

Care & Cleaning

Regular cleaning maintains efficiency and extends system life.

Exterior: Wipe with damp cloth. Air Filter: Replace every 1-3 months. Vents: Keep supply and return vents clear of obstructions. Outdoor Components: Keep area around outdoor vents clear of debris.

CAUTION! Do not use water or cleaning solutions on electrical components. Always turn off power before cleaning.

Regulatory Information

UL certified for safety standards. ANSI Z21.47 compliant for gas furnace standards. Meets DOE energy efficiency requirements. Manufactured to comply with applicable safety and performance standards. For support, visit www.bryant.com or contact 1-800-BRYANT-1. Keep this manual for future reference.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace not starting	Power/thermostat	Check circuit breaker; verify thermostat settings; ensure gas supply on.
No heat	Filter/ignition	Replace dirty filter; check for ignition lockout; verify gas valve position.
Frequent cycling	Filter/thermostat	Replace dirty filter; check thermostat location; verify proper sizing.
Unusual noises	Components/airflow	Check for loose components; verify proper airflow; inspect blower wheel.
Burner not igniting	Gas/ignition	Verify gas supply; check ignition system; inspect flame sensor.

Reset: Turn power off for 5 minutes, then restore power to reset control board.

Service: 1-800-BRYANT-1; www.bryant.com