Montgomery Ward Furnace Manual

The Montgomery Ward Furnace is a reliable heating system designed for residential use, featuring efficient heat distribution, adjustable thermostat controls, safety shut-off mechanisms, and durable construction. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to Ductwork 7. Operating the Furnace 8. Safety Features 9. Maintenance & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Burner assembly, heat exchanger, blower motor, thermostat controls, gas valve, pilot light, flue pipe connection.

Feature	Description
Burner Assembly	Provides efficient combustion for heat generation
Heat Exchanger	Transfers heat to air while keeping combustion gases separate
Blower Motor	Distributes heated air throughout duct system
Thermostat Controls	Allows temperature adjustment and system programming
Gas Valve	Regulates gas flow to burner
Pilot Light	Provides ignition source for main burner
Flue Pipe Connection	Vents combustion gases safely outdoors
Safety Shut-off	Automatically turns off gas if pilot goes out
Filter Access	Easy access for air filter replacement
Access Panels	Removable panels for maintenance access

Installation

Unpack and inspect all components. Ensure proper location with adequate clearance.

Position furnace: Place on level surface with proper clearances from combustible materials.
Connect gas supply: Use approved gas piping with shut-off valve.
Install flue pipe: Route combustion gases safely outdoors with proper slope.
Connect ductwork: Attach supply and return ducts securely.
Electrical connection: Connect to proper power supply and ground.

WARNING! Installation must be performed by qualified technician. Gas leaks can be dangerous.

First-Time Setup

Complete installation checks before initial startup.

Check gas connections: Use leak detection solution on all joints.
Verify electrical: Ensure proper voltage and grounding.
Inspect flue: Confirm proper installation and clear passage.
Light pilot: Follow lighting instructions carefully.
Test operation: Run furnace through complete heating cycle.

CAUTION! Never attempt to light pilot if you smell gas. Leave area immediately.

Specifications

Heating Capacity: Various models from 40,000 to 120,000 BTU
Fuel Type: Natural Gas or Propane
Efficiency: Standard efficiency models
Blower Motor: Multi-speed for optimal air flow
Thermostat Compatibility: Standard 24V systems
Venting: Type B vent required
Electrical: 120V AC, 60Hz
Dimensions: Varies by model
Warranty: Limited lifetime heat exchanger

Controls and Settings

Access controls via thermostat and furnace control panel.

Thermostat: Temperature setting, system ON/OFF, fan control.

Furnace Controls: Gas valve, pilot adjustment, limit switches, blower controls.

Temperature Settings: Adjust thermostat to desired comfort level. Fan Settings: AUTO (runs with heat call) or ON (continuous operation). Pilot Light: Manual lighting procedure with safety features. Limit Switches: Automatic shut-off if overheating detected.

Connecting to Ductwork

Proper duct connection ensures efficient heating distribution.

Size ducts appropriately for furnace capacity.
Seal all joints with approved duct sealant.
Install proper supports to prevent sagging.
Balance system for even heat distribution.

Tip: Have duct system professionally sized and balanced for optimal performance.

Operating the Furnace

Normal operation procedures for daily use.

Set thermostat to desired temperature.
System will automatically cycle on and off.
Monitor for consistent operation.
Adjust temperature as needed for comfort.
Use fan ON setting for continuous air circulation.

WARNING! Never block air vents or returns. Keep area around furnace clear.

Safety Features

Multiple safety systems protect against hazardous conditions.

Thermal Limit Switch: Shuts off burner if overheating detected. Pressure Switch: Ensures proper venting before ignition. Flame Rollout Switch: Detects improper burner flames. Gas Valve: Automatic shut-off if pilot fails. Carbon Monoxide Detection: Recommended additional safety device.

Maintenance & Cleaning

Regular maintenance ensures safe and efficient operation.

Monthly: Check and replace air filter.
Annual: Professional inspection and cleaning.
Clean burners and heat exchanger.
Inspect flue system for obstructions.
Lubricate blower motor if required.

CAUTION! Always turn off gas and electrical power before servicing.

Regulatory Information

ANSI Z21.47: Certified for safe operation. Local codes may apply for installation. For support, contact Montgomery Ward service department or qualified HVAC technician. Always follow local building codes and obtain required permits.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Thermostat setting/power	Check thermostat setting; verify power to furnace; check circuit breaker.
No heat	Pilot out/gas supply	Relight pilot; check gas valve; verify gas supply.
Blower doesn't run	Motor/limit switch	Check blower motor; inspect limit switches; verify electrical connections.
Frequent cycling	Filter/thermostat	Replace dirty filter; check thermostat location; inspect heat exchanger.
Unusual noises	Motor/blower wheel	Inspect blower wheel; check motor bearings; tighten loose components.

Reset: Turn power off for 30 seconds then restart.

Service: Contact qualified HVAC technician for all repairs.