Williams Wall Furnace Model 25-35-50 Instruction Manual

Manual Williams Wall Furnace Model 25-35-50 Instruction Manual

Williams Wall Furnace Model 25-35-50 Instruction Manual

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Williams Wall Furnace Model 25-35-50

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Williams Model 25-35-50 Instructions

Here we offer the Williams Wall Furnace Model 25-35-50 manual completely free and in English. We have cataloged this manual in the Furnaces section on Manualverse, and it has been rated by 1 users with an average rating of 5. If you have any specific questions about Williams Wall Furnace Model 25-35-50, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.


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Williams Wall Furnace Model 25-35-50 Specifications

Feature Model 25,000 BTU/HR Model 35,000 BTU/HR Model 50,000 BTU/HR
Gas Type (Model Numbers) Natural Gas (2509612, 2509622)
L.P. Gas (2509611, 2509621)		 Natural Gas (3509612, 3509622)
L.P. Gas (3509611, 3509621)		 Natural Gas (5009612, 5009622)
L.P. Gas (5009611, 5009621)
Input Rating (BTU/HR) 25,000 35,000 50,000
Heating Capacity Rating (BTU/HR) 19,350 25,930 38,000
Main Burner Orifice (Natural Gas) #43 (.089) - 1 Qty. #38 (.101) - 1 Qty. #43 (.089) - 2 Qty.
Main Burner Orifice (L.P. Gas) #54 (.055) - 1 Qty. #52 (.063) - 1 Qty. #54 (.055) - 2 Qty.
Manifold Pressure (Natural Gas) 4 In. W.C.
Manifold Pressure (L.P. Gas) 11 In. W.C.
Minimum Combustion Air Opening (Sq. Inch of Opening) 7.5 8.75 12.5

Williams Furnace Model 25-35-50 Details

The Williams Wall Furnace Model 25-35-50 is designed to provide efficient heating for various spaces, offering adaptability in both installation and fuel type. These furnaces are available in natural gas and L.P. (liquid propane) gas versions, catering to diverse energy supply options. Users must ensure adherence to all safety rules, including proper combustion and ventilation air requirements, which are detailed in the installation guide to prevent hazards.

Installation of the Williams Wall Furnace is highly versatile, supporting both recessed mount and surface mount configurations. This flexibility allows the unit to seamlessly integrate into different wall structures, whether flush with the wall or extending slightly from it. Clear instructions are provided for vent installation, which is critical for the safe and efficient operation of the furnace, directing exhaust gases outdoors.

The manual outlines specific requirements for gas supply and piping, including detailed tables for gas pipe sizing based on length and BTU capacity, ensuring adequate fuel delivery to the unit. Furthermore, the product supports various thermostat installation methods, ranging from basic bulb control models to more advanced wall thermostats, offering users precise temperature control over their heated environment.

Operating the furnace involves a straightforward start-up procedure, guiding users through the pilot lighting sequence and initial operation. The manual emphasizes the importance of understanding the controls and maintaining proper settings for optimal performance. Regular care for the furnace is also highlighted, including routine cleaning and inspections to ensure longevity and consistent heating output.

An important optional accessory is the Blower (Model 2901), which can significantly enhance heat distribution throughout a room, providing more uniform heating and improved comfort. The furnaces feature a manual spark ignitor (Piezo), offering a convenient and reliable method for lighting the pilot without the need for external tools or matches.

Safety mechanisms such as the thermomagnetic pilot safety and vent safety shutoff system are integrated into the design. These features automatically cease gas flow or operation if unsafe conditions are detected, such as a pilot flame failure or a blocked vent, reinforcing user safety. The comprehensive troubleshooting chart helps users diagnose and resolve common issues, from pilot outages to insufficient heat production.

Common operational concerns like delayed ignition, expansion noises, or flame roll-out are addressed with specific corrective actions. This detailed guidance empowers users to maintain their furnace, troubleshoot minor problems, and identify when professional service is required. The inclusion of an extensive replacement parts list further supports long-term maintenance and repair.

Frequently Asked Questions (FAQs)

Can't find the answer you need? Here are some frequently asked questions about the Williams Wall Furnace Model 25-35-50, and we answer them below.


What types of gas can the Williams Wall Furnace Model 25-35-50 use?
This furnace model is available in configurations for both Natural Gas and L.P. (Liquid Propane) Gas.

What are the main installation options for this furnace?
The Williams Wall Furnace can be installed using either a recessed mount for a flush look or a surface mount, depending on your wall structure and aesthetic preference.

My pilot light will not stay lit. What should I check?
First, ensure the pilot flame is impinging correctly on the thermocouple/generator. Check for loose or dirty connections at the gas valve and verify the thermocouple/generator is producing sufficient millivoltage. A defective thermocouple/generator, grounded thermostat wire, or a faulty thermomagnetic pilot safety could also be causes.

The pilot is burning, but no gas is reaching the main burner. What's wrong?
Ensure the manual valve is turned to the "On" position and your thermostat or temperature dial is set to a position calling for heat. A plugged burner orifice, mis-wired thermostat, or insufficient millivoltage from the pilot generator are also common causes. In rare cases, the gas valve itself may be defective.

Why does the furnace turn off before the room reaches the desired temperature?
This could be due to improper sensing bulb location (for bulb control models), an out-of-calibration temperature dial, or an incorrectly located thermostat (e.g., in the path of warm air discharge or near heat sources). A defective thermostat is also a possibility.

What if the furnace isn't producing enough heat?
The furnace may be too small for the space being heated, or it might not be burning at its full rate. Check for low gas pressure at the gas valve (should be 4" W.C. for natural gas; 11" W.C. for L.P.G.) and inspect the burner orifice.

The furnace won't shut off when the room temperature is attained. What's the issue?
Possible causes include an improperly located sensing bulb, an out-of-calibration temperature dial, or a broken bulb/capillary (for bulb control models). For wall thermostat models, check for defective or shorted thermostat wiring, an incorrect thermostat location (e.g., on an outside wall causing cold air contact), or a defective thermostat. Dirt under the valve seat or a stuck-open valve can also be a cause.

Is a blower accessory included with the furnace?
No, the blower (Model 2901) is an optional accessory that can be purchased separately to improve heat circulation.

How do I care for my Williams Wall Furnace?
Regular care involves routine cleaning and inspections as outlined in the "How To Care For Your Furnace" section of the manual. This helps ensure optimal performance and longevity of the unit.

What should I do if I experience abnormal operation like spillage or excessive flame roll-out?
For spillage, check the vent system for blockages, excessive downdrafts, or negative room pressure caused by other appliances. For excessive flame roll-out, the furnace might be over-rated; check for high gas pressure at the gas valve as described in the troubleshooting guide.

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