AIR for Combustion Ventilation | Desa PCVDR24 RGA manual

OWNER’S MANUAL

AIR FOR

COMBUSTION AND

VENTILATION

Continued

DETERMINING FRESH-AIR FLOW FOR APPLIANCE LOCATION

Determining if You Have a Confined or Unconfined Space

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

Space: Includes the room in which you will install appliance 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.

Gas fireplace logs		_____________ Btu/Hr
Gas water heater*		_____________ Btu/Hr
Gas furnace		_____________ Btu/Hr
Vented gas heater		_____________ Btu/Hr
Vent-free heater		_____________ Btu/Hr
Other gas appliances* +		_____________ Btu/Hr
Total	=	_____________ Btu/Hr

Example:
Gas water heater		40,000 Btu/Hr
Gas fireplace logs +		55,000 Btu/Hr
Total	=	95,000 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: 51,200 Btu/Hr (maximum the space can support)

95,000 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 6.

B.Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.

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 appliance may be operated is smaller than that defined as an unconfined space or if the 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, 1992, Section 5.3 or applicable local codes.

Continued

901747

PCVDR24 RGA specifications

Desa PCVDR24 RGA is a cutting-edge device designed to enhance temperature management in residential and commercial spaces. This innovative product stands out in the market thanks to its advanced technology and user-friendly features.

At its core, the PCVDR24 RGA offers precise temperature control, allowing users to maintain their desired comfort levels efficiently. It uses a highly responsive digital thermostat, which ensures accurate readings and minimal temperature fluctuations. This feature not only contributes to user comfort but also promotes energy efficiency, as the system avoids unnecessary heating or cooling cycles.

One of the key features of the Desa PCVDR24 RGA is its robust construction. Designed for durability, this unit is built to withstand varying environmental conditions, making it suitable for both indoor and outdoor applications. The materials used in its construction resist rust and corrosion, ensuring a long lifespan even in harsh climates.

The PCVDR24 RGA also employs advanced airflow technology, which facilitates even distribution of heated or cooled air. This ensures that every corner of the room reaches the desired temperature without hot or cold spots, significantly enhancing comfort levels for occupants.

Furthermore, the device is equipped with programmable settings, allowing users to tailor temperature schedules based on their daily routines. This smart feature not only enhances user convenience but also contributes to energy savings, as homeowners and business operators can adjust the heating and cooling cycles to operate according to their specific needs.

Additionally, the Desa PCVDR24 RGA comes with a built-in safety mechanism designed to prevent overheating. This greatly reduces the risk of potential accidents, ensuring a safe environment for all users.

In terms of energy efficiency, the PCVDR24 RGA is designed to meet rigorous industry standards, making it an environmentally friendly choice. Users can expect a reduction in energy bills due to its efficient operation, which is increasingly important in today’s eco-conscious society.

In summary, the Desa PCVDR24 RGA combines advanced technology, robust construction, and user-friendly features to provide a reliable solution for temperature management. Its precise control, even airflow distribution, programmable settings, and safety features make it an attractive option for anyone looking to improve comfort and energy efficiency in their space.