UVS27 Vent-Free Gas Heater

Example:

A room that is 18’ x 12’ x 8’ has a volume of 1728 cubic feet, ( length x width x height). An adjoining open kitchen that is 10’ x 12’ x 8’ has a volume of 960 cubic feet. An adjoining open dining room is 12’ x 12’ x 8’ with a volume of 1152 cubic feet. The total space volume is 3840 cubic feet. (1728 + 960 + 1152).

2.Divide the volume of space by 50 cubic feet. The result is the maximum BTU/Hr that the space can sup-

port.

Example:

3840 divided by 50 = 76.8 or 76,800 BTU/Hr.

3.Add the BTU/Hr ratings of all fuel-burning appliances installed in the same space, including the following:

Gas Water Heater

Gas Furnace

Gas Fireplace Logs

Unvented Gas Heater

Vented Gas Heater*

Other Gas Appliances*

*Do not include Direct Vent appliances as these utilize outside air for combustion and vent to the outdoors.

Example:

Gas Range

55,000 BTU/Hr

Unvented Heater

+33,000

BTU/Hr

Total

88,000

BTU/Hr

4.Compare the maximum BTU/Hr rating the space can support with the total BTU/Hr used by the appliances.

Example:

76,800 BTU/Hr - max. the space can support

88,000 BTU/Hr - total used by appliances

In this example, the maximum BTU/Hr that the space can support is less than the total used by the appli- ances, the space is considered to be Confined space. Additional air must be provided to meet the require- ments of the Unvented heater.

A confined space may be ventilated in two ways:

A)Open up or provide at least two ventilating grilles to an adjoining unconfined space. Use any of the options illustrated in Figure 3.

Each of the two grilles must provide an opening of at least 50 square inches, with all opening dimensions being at least 3”. One grille must be located within 12” of the ceiling; the other within 12” of the floor. (If the total exceeds 100,000 BTU/Hr, additional grilles will be required.)

B)Vent the room directly to the outdoors. (Provide one square inch of opening for each 4,000 BTU/hr.

If the total BTU/Hr used by the appliances is less than the maximum BTU/Hr the space is able to support, the room meets the Unconfined space criteria and no further ventilation is required.

For further information on ventilation guidelines and sizing specifications follow the National Fuel Gas Code NFPA 54/ANSI Z223.1 Section 5.3.

W A R N I N G

This heater shall not be installed in a confined space or unusually tight construction unless provisions are made for adequate combustion and ventilation air.

W A R N I N G

If the area in which the heater may be operated is smaller than that defined as an unconfined spaceof if the building is of unusually tight constructins, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1, NFPA 54, Section 5.3 or applicable codes.

Option 1 Vents to Ad- joining Room

12”

Option 3 -

Vents to

Adjoining

Room

Option 2

 

- Remove

 

Door to

12”

Adjoining

 

Rooms

 

VO370-2

Fig. 3 Vent options to provide additional air.

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Vermont Casting 4090 - 4092, 4040 - 4046, 4085 - 4087, 4030 - 4036 manual R N I N G, Example

4085 - 4087, 4030 - 4036, 4090 - 4092, 4040 - 4046 specifications

Vermont Casting gas fireplaces are renowned for their high-quality construction and elegant designs, making them popular choices among homeowners seeking both functionality and aesthetic appeal. The models 4030, 4036, 4040, 4046, 4085, 4087, 4090, and 4092 represent a range of offerings that showcase the brand’s commitment to craftsmanship and innovation.

The Vermont Casting 4030 and 4036 models are characterized by their compact size and traditional styling, making them a great fit for smaller spaces. Both models employ advanced gas-burning technologies, ensuring efficient heat output and reduced emissions. The clean line design enhances any interior, while the expansive glass door allows for a clear view of the flames, adding to the ambiance of the room.

The 4040 and 4046 models expand upon this foundation, catering to larger spaces without sacrificing efficiency. These fireplaces can be fitted with either natural gas or propane, providing flexibility based on the homeowner’s preferences. The 4046, with its increased BTU output, is particularly effective in heating larger areas, making it a reliable choice during colder months.

Moving on to the 4085 and 4087 models, they are designed with larger viewing areas and a modern aesthetic, which appeals to contemporary tastes. These models also incorporate Vermont Castings' Clean Burn technology, which maximizes heat generation while minimizing pollutants released into the air. This technology makes the 4085 and 4087 environmentally friendly choices for conscientious consumers.

Finally, the 4090 and 4092 models take versatility to another level, offering distinctive designs that can complement various decor styles. Both come equipped with customizable options, including different finishes and decorative fronts, allowing homeowners to tailor their fireplace to match their preferences. The inclusion of advanced electronic ignition systems makes these models user-friendly, ensuring a hassle-free experience when lighting and operating the fireplace.

In conclusion, the Vermont Casting fireplace models 4030, 4036, 4040, 4046, 4085, 4087, 4090, and 4092 exemplify a blend of tradition, innovation, and customization. Their features promote efficient heating and aesthetic appeal, making them desirable options for any home environment. Whether for cozy evenings or entertaining guests, these fireplaces promise to enhance the warmth and charm of any space.