Williams High Efficiency Direct Vent Furnaces
Enjoy money savings, high-efficiency and the attractive, low-profile, modern appearance of Williams' High-Efficiency Direct-Vent Furnaces. These furnaces require no inside air for operation, making them a safe choice for adding comfort to almost any room. Ideal for homes, apartments, offices, garages and room additions.
Key Features
- Natural and propane models
- Easy installation
- Attractive, durable fresh-white finish
- Small, low-profile vent size
- Sealed combustion chamber uses no inside air
- Unique wall-mount design requires no floor space
- Air-to-air system offers instant heat
[Image: Two Williams direct vent furnaces are shown. The unit on the left is white, featuring a prominent front grille and a digital display panel, labeled '17,700 BTU/hr. - LPG and Natural'. The unit on the right is also white, with a grille and a control panel, labeled '7,400 BTU/hr. - LPG'.]
[Graphic: Text 'DESIGNED & ASSEMBLED IN THE USA SINCE 1916' with an American flag icon.]
Product Specifications
| Model Number (Natural/Propane) | BTU/hr. Input | BTU/hr. Output | Efficiency Percent (Thermal) | AFUE | Dimensions (Inches) Width | Dimensions (Inches) Depth | Dimensions (Inches) Height | CFM | Electrical Load (W) 120V | Thermostat | Shipping Weight (Lbs.) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0743512 / 0743511 | 7,400 | 5,500 | 74 | 72 | 18 7/8 | 6 3/4 | 22 1/4 | - | - | BUILT-IN | 44 |
| 1773511 | 17,700 | 13,500 | 76 | 76 | 21 3/4 | 8 1/4 | 28 1/8 | 129 | 86 | BUILT-IN | 57 |
Elevation rating from sea level to 2,000' but may be derated up to a maximum of 5,500'.
Gas Connection: 1/2"
Features in Detail
Unique Wall-Mount Design
Furnaces require no floor space.
"Matchless" Pilot Igniter
Assures convenient pilot lighting without matches.
Requires No Electricity (Models: 0743512 / 0743511)
These models do not require electrical power for operation.
Programmable Timer (Model: 1773511)
A programmable thermostat in your home is one of the easier ways to save energy and money. Features On/Off, seven-day timer/clock.
Summertime Ventilation (Model: 1773511)
A two-speed recirculating fan will move the cool air off the floor and circulate it throughout your home, keeping it more comfortable.
Termination Cap (Flue)
Small, low-profile termination cap goes on the exterior of the building.
Direct-Vent Safety
Provides clean, comfortable heat. The gas flame is completely sealed inside, away from room air. Air necessary for combustion is drawn from outside through the vent, and combustion products are vented directly to the outside. This ensures only clean, gentle heat is delivered into the room. Windows and doors can stay closed because no room air is used for combustion.
[Diagram: Illustrates the direct-vent safety system. It shows an exterior wall with a concentric vent. Fresh air is drawn from the outside into the furnace for combustion. Combustion products are safely vented directly to the outside. Warm air is then circulated into the room, while cool room air is shown returning to the unit for recirculation, ensuring no room air is used for combustion.]
Interior Furnace Clearances
Models: 0743512 / 0743511
- 2" from an intersecting wall.
- 1/4" from unit to back of wall (0" to spacers).
- 2" to finished floor.
- 10" from the top of the appliance to the ceiling or other obstructions or combustibles.
- 19 1/2" maximum wall thickness.
Models: 1773511
- 3 1/8" from an intersecting wall.
- 0" from unit to back of wall.
- 2" from finished floor.
- 10" from the top of the appliance to the ceiling or other obstructions or combustibles.
- 19 5/8" maximum wall thickness.
Accessories
Vent Adapter Model 9399
The Vent Adapter Accessory is used to compensate for the extra space left around the vent hole when replacing a furnace with a larger vent opening. It can also be used to extend the flue terminal on homes with vinyl siding so that the vent cap will be flush against the edge of the siding.
Gas Line Kit 8966
Kit for converting gas to propane for MODEL 0743512.
Important Information & Warnings
Warranty Considerations
Any warranty considerations are contingent on installation by a qualified installer (contractor). Self-installation is prohibited and will invalidate your warranty.
- Read owner's manual before using/installing.
- Photographs are representative only.
- Check local codes and ordinances for permitted uses.
- Consult installation manual for clearances prior to installation.
- Williams reserves the right to amend product specifications without notice.
- Installation and servicing recommended by a qualified service person.
- Combustion chamber carries a 10-year limited warranty. All other parts carry a one-year limited warranty.
- Venting must comply with the "Venting and Chimney Requirements" section of the instruction manual.
- Massachusetts Approval G3-0218-317.
California Proposition 65 Warning
⚠️ This product can expose you to chemicals including epichlorohydrin, which is known to the State of California to cause cancer and birth defects and/or other reproductive harm. For more information go to www.p65warnings.ca.gov.
