United States Stove VFZC32N, VFZC32L specs

AIR FOR COMBUSTION AND VENTILATION CONTINUED

Determining if You Have a Confined or Unconfined Space

Use this worksheet to determine if you have a confined or unconfined space.

Space: Includes the room in which you will install the firebox plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.

1.Determine the volume of the space (length x width x height).

Length x Width x Height = _______________ cu. Ft. (volume of space)

Example: Space size	22 ft. (length) x 18 ft. (width) x 8 ft. (ceiling height) =
	3168 cu. Ft. (volume of space)

If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space.

2.Divide the space volume by 50 cubic feet to determine the maximum BTU/Hr the space can support.

_________ (volume of space) 50 cu. Ft. = (Maximum BTU/Hr the space can support)

Example: 3168 cu. Ft. (volume of space) 50 cu. Ft. = 63.3 or 63,300 (maximum BTU/Hr the space can support)

3.Add the BTU/Hr of all fuel-burning appliances in the space.

Vent-free Firebox		__________________	BTU/Hr
Gas water heater*		__________________	BTU/Hr
Gas furnace		__________________	BTU/Hr
Vented gas heater		__________________	BTU/Hr
Gas firebox logs		__________________	BTU/Hr
Other gas appliances*	+ __________________		BTU/Hr
Total	= __________________		BTU/Hr
Example: Gas water Heater		40,000	BTU/Hr
Vent-free firebox with log heater	+	39,000	BTU/Hr
Total	=	79,000	BTU/Hr

*Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

4.Compare the maximum BTU/Hr the space can support with the actual amount of BTU/ Hr used.

______________	BTU/Hr (maximum the space can support)
______________	BTU/Hr (actual amount of BTU/Hr used)

Example: 63,300 BTU/Hr (maximum the space can support) 79,000 BTU/Hr (actual amount of BTU/Hr used)

The space in the above example is a confined space because the actual BTU/Hr used is more than the maximum BTU/Hr the space can support. You must provide additional fresh air.

Your options are as follows:

A.Rework worksheet, adding the space of an adjoining room. If the extra space provides

an unconfined space, remove door to adjoining room or add ventilation grills between

8rooms. See Ventilation Air From Inside Building, page 9.

VFZC32L, VFZC32N specifications

The United States Stove Company has long been recognized for its quality heating solutions, and the VFZC32N and VFZC32L models exemplify this commitment to excellence. These freestanding vent-free zone heaters are designed to provide efficient and effective heating for residential spaces, showcasing advanced technologies and user-friendly features.

The VFZC32N model, with its natural gas configuration, and the VFZC32L, which operates on propane, offer impressive heating capabilities. Both models can effectively heat areas up to 1,200 square feet, making them suitable for various room sizes in homes, garages, or workshops. They feature a clean, modern design that complements contemporary and traditional decor alike, with a sleek finish that enhances any interior space.

One of the standout characteristics of these heaters is their high-efficiency rating. With a 99% thermal efficiency, the VFZC32 series maximizes heat output while minimizing fuel consumption. This efficiency not only leads to lower energy bills but also results in a more eco-friendly heating solution. The vent-free technology allows these units to operate without the need for venting, simplifying the installation process and providing more flexibility in placement.

Safety features are a priority in the VFZC32N and VFZC32L models. Both heaters come equipped with an oxygen depletion sensor (ODS) that automatically shuts off the heater if oxygen levels fall below a safe threshold. Additionally, the built-in thermostat ensures optimal temperature control, allowing for consistent and comfortable heat throughout the space.

User convenience is further enhanced by the electronic ignition system, which provides hassle-free startups without the need for manual lighting. The adjustable flame height allows users to customize the heat output to suit their specific needs, while the easy-access control panel ensures straightforward operation.

In conclusion, the United States Stove VFZC32N and VFZC32L models represent an excellent choice for those seeking reliable and efficient heating solutions. With their impressive efficiency, modern design, and advanced safety features, these vent-free heaters make it easier than ever to enjoy warmth and comfort at home. Whether you are looking to heat a single room or a larger space, the VFZC32 series is certainly worth considering for your heating needs.