- Must be installed against a wall (minimum 6" clearance to the rear and 6" from side wall) and vented to the outside
- 4" Vent size
- Resettable vent switch
- Convertible gas valves
- Read owner's manual before installing/operating
- Check local codes and ordinances for permitted uses
- Servicing recommended by qualified service technician
- Natural Gas - 3501522A AND Liquid Propane Gas - 3501521A
An optional blower is also available (field installed; sold separately) for this heater. It is also available with a factory installed blower. Please select your options such as an optional blower, high elevation kit (if you are 2001 ft. or more above sea level), and a thermostat at the time of purchase.
WILLIAMS FURNACE NO LONGER OFFERS FACTORY INSTALLED HIGH ELEVATION KITS. Williams furnaces come factory set for elevations up to 2000 feet above sea level. High elevation kits are sold separately.