Williams Gas Wall Furnace Manual

The Williams Gas Wall Furnace is a high-efficiency heating system designed for residential use, featuring natural gas or propane operation, electronic ignition, variable heat settings, safety shut-off valves, thermostat compatibility, and energy-efficient performance. 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. Technical Specifications 5. Controls and Operation 6. Thermostat Connection 7. Maintenance Procedures 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Gas valve assembly, burner assembly, heat exchanger, blower motor, thermostat connection, safety shut-off, pilot light/electronic ignition.

Feature	Description
Gas Type	Natural gas or propane compatible
Ignition System	Electronic ignition or standing pilot
Heat Output	Variable settings (Low/Medium/High)
Thermostat Control	Compatible with standard wall thermostats
Safety Valve	Automatic shut-off for gas supply
Venting	Direct vent or natural draft options
Blower Motor	Forced air circulation
Pilot Assembly	For models with standing pilot light
Gas Connection	1/2" NPT gas inlet
Power Supply	120V AC, 60Hz

Installation Requirements

Professional installation recommended. Ensure proper clearances and ventilation.

Location: Install on exterior wall with proper clearances from combustibles.
Gas Connection: Use approved gas piping; test for leaks with soap solution.
Venting: Install vent pipe according to local codes and manufacturer specifications.
Electrical: Connect to 120V AC power source with proper grounding.
Thermostat: Wire compatible thermostat according to wiring diagram.

WARNING! Gas appliances must be installed by qualified professional. Improper installation can cause fire, explosion, or carbon monoxide poisoning.

First-Time Setup

After installation, perform initial startup procedure.

Gas Supply: Ensure gas valve is open; check for leaks.
Pilot Light: For standing pilot models, light pilot according to instructions.
Electronic Ignition: Set thermostat to call for heat; system should ignite automatically.
Test Operation: Verify proper ignition, flame pattern, and heat output.
Thermostat Calibration: Set desired temperature and verify system cycles properly.

CAUTION! If gas odor is detected, shut off gas immediately and contact professional service.

Technical Specifications

Fuel Type: Natural Gas or Propane
BTU Input: 30,000 - 60,000 BTU (model dependent)
Efficiency: 80%+ AFUE rating
Venting: Type B vent or direct vent
Gas Pressure: Natural gas: 7" WC, Propane: 11" WC
Electrical: 120V AC, 60Hz, 2.5A max
Dimensions: Varies by model (typically 24"W x 36"H x 12"D)
Clearances: 6" from sides, 12" from top, 24" from front
Warranty: Limited lifetime heat exchanger, 5 years parts

Controls and Operation

Main control valve with ON/OFF/PILOT settings. Thermostat controls temperature.

Control Knob: OFF, PILOT, ON positions. For pilot models: push and hold while lighting.

Operation: Set thermostat to desired temperature. System will ignite when heat is called. Blower will activate once heat exchanger reaches temperature. System cycles automatically to maintain set temperature.

Thermostat Connection

Compatible with most 24V thermostats. Standard 2-wire connection (R and W terminals).

Turn off power to furnace before wiring.
Connect thermostat wires to R (power) and W (heat) terminals.
Set thermostat to heat mode and desired temperature.
Restore power and test operation.

Tip: Use programmable thermostat for improved energy efficiency.

Maintenance Procedures

Annual professional maintenance recommended. Basic user maintenance:

Visual Inspection: Check for soot, corrosion, or damage.
Burner Cleaning: Vacuum burner compartment (power off).
Pilot Assembly: Clean pilot orifice if flame is weak or yellow.
Blower: Vacuum blower wheel and motor.
Venting: Ensure vent pipes are clear and properly connected.
Filter: Replace or clean air filter monthly during heating season.

WARNING! Always turn off gas and power before performing any maintenance.

Safety Features

Thermal overload protection, flame rollout switch, limit switch, pressure switch, automatic gas shut-off valve. Carbon monoxide detector recommended for all gas appliances.

Care & Cleaning

Exterior: Wipe with damp cloth. Do not use abrasive cleaners. Internal components: Professional cleaning only.

CAUTION! Never attempt to clean gas valves or controls. Contact qualified technician.

Regulatory Information

ANSI Z21 standards compliant. UL listed. Must be installed according to National Fuel Gas Code and local building codes. For technical support, contact Williams Heating at 1-800-XXX-XXXX or visit www.williamsgasfurnace.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't ignite	Gas supply, pilot, thermostat	Check gas valve; relight pilot; verify thermostat setting.
Blower doesn't run	Power, limit switch, motor	Check power supply; reset limit switch; professional service for motor.
Yellow burner flame	Combustion air, dirty burner	Ensure proper ventilation; clean burner assembly.
Frequent cycling	Thermostat, filter, airflow	Check thermostat location; replace filter; ensure proper airflow.
Gas odor	Gas leak	Shut off gas immediately; evacuate area; contact gas company.

Reset: Turn thermostat below room temperature, wait 5 minutes, then reset to desired temperature.

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