Snyder General Furnace Manual

The Snyder General Furnace is a high-efficiency heating system designed for residential and light commercial applications. This manual covers installation, operation, maintenance, and troubleshooting for various Snyder General furnace models. The furnace features advanced combustion technology, multiple safety systems, variable-speed blower motors, and compatibility with various thermostat systems. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Heat exchanger, blower assembly, gas valve, ignition system, pressure switches, limit controls, venting system.

Installation Requirements

Proper installation is critical for safe and efficient operation. Follow all local codes and manufacturer specifications.

1. Location: Install in dry, clean area with adequate clearance for service access.
2. Combustion Air: Ensure adequate fresh air supply per local codes.
3. Venting: Install PVC vent pipes according to manufacturer specifications.
4. Gas Supply: Connect to proper gas supply with approved piping and shutoff valve.
5. Electrical: Connect to 120V AC power with proper grounding and disconnect.
6. Ductwork: Ensure proper sizing and sealing of supply and return ducts.

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

First-Time Setup

Initial startup and configuration procedures.

1. Gas Pressure Check: Verify inlet and manifold gas pressures are within specifications.
2. Venting Verification: Confirm proper draft and vent pipe installation.
3. Electrical Check: Verify proper voltage and grounding.
4. Control Setup: Configure dip switches for proper operation with installed accessories.
5. System Check: Perform complete system operational test.
6. Customer Orientation: Explain basic operation and maintenance requirements.

CAUTION! Never bypass safety controls or operate furnace with safety covers removed.

Technical Specifications

• Input Capacity: 40,000 to 120,000 BTU/h depending on model
• Efficiency: 80% to 96% AFUE depending on model series
• Gas Type: Natural gas or propane (conversion kit required)
• Electrical: 120V AC, 60Hz, 15 amp circuit
• Static Pressure: 0.1 to 0.8 inches water column maximum
• Temperature Rise: 35°F to 65°F depending on model
• Venting: 2-inch or 3-inch PVC pipe depending on model
• Sound Level: Less than 70 dBA at 3 feet
• Warranty: 20-year heat exchanger, 5-year parts

Controls and Settings

Integrated control board with LED status indicators and diagnostic capabilities.

Control Board Features: Power LED, status LED, fault code display, dip switch settings, terminal connections.

Operating Modes: HEAT, COOL (with AC), FAN ONLY. Blower Settings: Continuous fan, timed off-delay. Temperature Limits: High limit control, rollout switches. Diagnostic Codes: Flash patterns indicate specific fault conditions. Configuration: Dip switches for thermostat type, blower speed, accessory configuration.

Venting and Combustion Air

Proper venting is critical for safe operation and efficiency.

1. Vent Pipe: Use only approved PVC pipe materials.
2. Vent Length: Follow maximum vent run specifications for model.
3. Termination: Install vent termination according to local codes.
4. Combustion Air: Provide adequate fresh air supply.
5. Clearances: Maintain proper clearances from combustible materials.

Tip: Always perform combustion analysis after installation or service.

Operation Instructions

Normal operating sequence and user controls.

1. Thermostat Call: Thermostat calls for heat by closing R-W circuit.
2. Prepurging: Blower operates to clear combustion chamber.
3. Ignition: Hot surface igniter glows and gas valve opens.
4. Flame Verification: Flame sensor confirms ignition.
5. Main Operation: Burners operate and blower starts after heat exchanger warms.
6. Shutdown: Gas valve closes when thermostat satisfied, blower continues for cool-down.
7. Safety Monitoring: Continuous monitoring of all safety devices during operation.

WARNING! If you smell gas, immediately shut off gas supply and call qualified service technician.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

1. Monthly: Check and replace air filter as needed.
2. Annual: Professional inspection and cleaning by qualified technician.
3. Cleaning: Clean burners, heat exchanger, and blower assembly.
4. Inspection: Check all safety controls, gas pressure, and venting.
5. Testing: Verify proper operation of all safety devices.
6. Lubrication: Blower motor bearings (if required by model).

CAUTION! Always disconnect power before performing any maintenance.

Safety Systems

Multiple safety systems protect against hazardous conditions.

Regulatory Information

UL listed and ANSI certified for safety. Complies with ASHRAE standards for efficiency. Manufactured to meet or exceed industry standards for reliability and performance. All furnaces must be installed according to National Fuel Gas Code (NFPA 54) and local building codes. For technical support or warranty service, contact Snyder General at 1-800-555-HEAT or visit www.snydergeneral.com.

Troubleshooting

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

Service: 1-800-555-HEAT; www.snydergeneral.com