®

PROPANE/LP GAS RESIDENTIAL HEATERS

AIR FOR COMBUSTION

AND VENTILATION

Continued

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

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 heater 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 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 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: 2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hr the space can support)

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

Vent-free heater

___________________ Btu/Hr

 

 

 

 

Gas water heater*

___________________ Btu/Hr

Example:

 

 

 

Gas furnace

___________________ Btu/Hr

Gas water heater

 

30,000

Btu/Hr

Vented gas heater

___________________ Btu/Hr

Vent-free heater +

30,000

Btu/Hr

Gas fireplace logs

___________________ Btu/Hr

Total

=

60,000

Btu/Hr

Other gas appliances* + ___________________ Btu/Hr

 

 

 

 

Total

= ___________________ 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: 51,200 Btu/Hr (maximum the space can support) 60,000 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 adjoin- ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 7.

B.Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 7.

C.Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation.

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

For more information, visit www.desatech.com

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Vanguard Heating VMH3000TPA AIR for Combustion Ventilation, Determining FRESH-AIR Flow for Heater Location
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VMH3000TPA specifications

The Vanguard Heating VMH3000TPA is a cutting-edge heating solution designed to provide efficient warmth to both residential and commercial spaces. This model combines advanced technology with robust construction to ensure reliable performance throughout the heating season.

One of the main features of the VMH3000TPA is its high-output heating capability. With a powerful performance of up to 3000 watts, it effectively heats large areas, making it an ideal choice for open floor plans and larger rooms. The unit is designed for effortless installation and can be easily mounted on walls or placed in various settings, providing flexible placement options.

Energy efficiency is a hallmark of the VMH3000TPA. It incorporates a smart thermostatic controller that allows users to set desired temperatures accurately and maintain them with minimal power consumption. This not only ensures comfort but also helps in reducing energy bills, making it an economically sound choice.

The VMH3000TPA utilizes advanced ceramic heating technology, which heats up quickly and provides uniform warmth. The ceramic plates within the unit warm up rapidly, ensuring that the surrounding area is heated efficiently and evenly. This technology also contributes to longer-lasting performance, reducing wear and tear over time.

User convenience is further enhanced through an integrated digital display that makes it easy to monitor and adjust settings. The unit also features a remote control, allowing users to operate the heater from a distance without needing to get up, which adds a layer of convenience, especially in larger spaces.

Safety is a crucial aspect of the design of the VMH3000TPA. It is equipped with multiple safety features, including overheat protection and tip-over switches, which automatically shut off the heater if it is tipped over or if it exceeds safe temperature levels. These safety mechanisms provide peace of mind for users, knowing that the heater operates within safe parameters.

In terms of aesthetic appeal, the VMH3000TPA sports a modern and sleek design that seamlessly integrates into various interior styles, enhancing the overall ambiance of the space it occupies. The lightweight construction ensures ease of mobility, allowing users to move it from room to room as needed.

Overall, the Vanguard Heating VMH3000TPA stands out in the market for its powerful heating capabilities, energy efficiency, advanced safety features, and user-friendly design, making it a top choice for individuals seeking reliable heating solutions for diverse environments.
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