SPECIFICATIONS

Model

VFHS-20R

VFHS-20/10T

Input Maximum

20,000

20,000/10,000

Minimum

14,000

7,000/7,000

Minimum Firebox Opening

 

Height

26 3/4"

26 3/4"

Depth

11 1/4"

11 1/4"

Front Width

23 1/4"

23 1/4"

Rear Width

17 1/4"

17 1/4"

Gas Inlet

3/8"

3/8"

 

 

 

 

Accessories

 

 

VFS-BK

Automatic Blower

 

EHL-24-1

Brick Liner

 

VPP1A-22

Aged Brick Liner

 

Accessories For VFHS-20R Only

 

FRBC-1

Battery Operated Remote Control

 

FRBTC-1

Battery Operated Remote Control

 

 

w/Thermostat

 

FREC-1

Electric Remote Control

 

FWS-1

Wall Switch

 

GWSG-T

Wall Thermostat, Millivolt

 

TMV

Wall Thermostat, Millivolt - Reed Switch

 

TRW

Wireless Remote Wall Thermostat

WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS

Water vapor is a by-product of gas combustion. An unvented room heater produces approximately one (1) ounce (30ml) of water for every 1,000 BTU's (.3KW's) of gas input per hour. .

Unvented room heaters are recommended as supplemental heat (a room) rather than a primary heat source (an entire house). In most supplemental heat applications, the water vapor does not create a problem. In most applications, the water vapor enhances the low humidity atmosphere experienced during cold weather.

The following steps will help insure that water vapor does not become a problem.

1.Be sure the heater is sized properly for the application, including ample combustion air and circulation air.

2.If high humidity is experienced, a dehumidifier may be used to help lower the water vapor content of the air.

3.Do not use an unvented room heater as the primary heat source.

PROVISIONS FOR ADEQUATE COMBUSTION & VENTILATION AIR

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

The National Fuel Gas Code defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed, through openings not furnished with doors, are considered a part of the unconfined space.

Unusually Tight Construction

The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you must provide additional fresh air.

Unusually tight construction is defined as construction where:

a.Walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm or less with openings gasketed or sealed, and

b.Weatherstripping has been added on openable windows and doors, and

c.Caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and

floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings.

If your home meets all of the three criteria above, you must provide additional fresh air. See “Ventilation Air From Outdoors,” page 7.

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 16 ft. (length) x 10 ft. (width) x 8 ft. (ceiling height) = 1,280 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: 1,280 cu. ft. (volume of space) ÷ 50 cu. ft. = 25.6 or 25,600 (maximum BTU/Hr the space can support)

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Empire Comfort Systems VFHS-20R-4, VFHS-20/10T-4 installation instructions Specifications
Page 5 Page 7

VFHS-20R-4, VFHS-20/10T-4 specifications

Empire Comfort Systems has consistently been a frontrunner in the heating industry, and their VFHS-20R-4 and VFHS-20/10T-4 models are prime examples of their commitment to quality and innovation. Designed for efficient and effective heating solutions, these units offer unique features that cater to diverse customer needs.

The VFHS-20R-4 is part of Empire's versatile vent-free heater line, providing an impressive output of 20,000 BTUs. Its design allows for flexible installation options, making it ideal for both residential and commercial applications. One of the standout features of the VFHS-20R-4 is its advanced heating technology, which utilizes radiant heat to warm your space quickly and efficiently. This method not only provides powerful heat but also enhances comfort by distributing warmth evenly.

Furthermore, the VFHS-20R-4 includes a built-in safety pilot system that ensures safe operation. This technology detects any malfunctions and automatically shuts the unit off if necessary, providing peace of mind for users. Additionally, the unit's thermostatic control allows for easy temperature management and helps maintain an energy-efficient environment.

On the other hand, the VFHS-20/10T-4 model is tailored for areas requiring a dual heating approach. This innovative unit combines both vent-free and vented heating options, offering flexibility based on user preferences or regulatory requirements. With a heat output of 20,000 BTUs, it delivers ample warmth while also featuring a compact design that seamlessly fits into various spaces.

Both models boast a sleek and modern aesthetic, ensuring they complement any decor. They are available in multiple finishes, allowing users to choose the one that best suits their style. The ease of installation is another significant advantage, with straightforward instructions enabling users to set up the units with minimal hassle.

In terms of energy efficiency, both the VFHS-20R-4 and VFHS-20/10T-4 are equipped with technologies that minimize energy consumption while maximizing heat output. Their environmentally friendly design helps reduce emissions, making them suitable options for eco-conscious consumers.

In conclusion, the Empire Comfort Systems VFHS-20R-4 and VFHS-20/10T-4 models represent the pinnacle of heating technology. With their efficient features, safety enhancements, and stylish designs, they stand out as excellent choices for anyone seeking reliable and effective heating solutions in their living or working spaces. Whether you need a versatile heating option or a dual-function solution, Empire Comfort Systems delivers with these remarkable models.
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