FRESH AIR FOR COMBUSTION AND VENTILATION

Continued

Example 2: Locating Heater in Confined (Closed) Area

NOTICE

A confined area has an air volume of less than 50 cubic feet for each 1000 BTU/Hr input rating of all appliances in the area (cubic feet equals length x width x height of area). Include adjoining rooms only if there are no doors between the rooms.

If you install this heater in a confined area, you must provide additional fresh air.

Ventilating Confined Area

This fresh air would come from an adjoining open area or outdoors.

WARNING

The adjoining open area must have enough fresh, outside air ventilation to supply any appliance in that area plus the confined area. Follow instructions under Example 1: Locating Heater in Unconfined (Open) Area, page 17 to make sure fresh air ventilation is adequate.

When ventilating to an adjoining open area, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two areas. Follow the National Fuel Gas Code NFPA 54/ANSI Z223.1. It lists fresh-air requirements for fuel-burning appliances.

Ventilation

Grills into

Closet for

Hot Water

Heater

12"

Ventilation Grills

Connecting Two Rooms to Meet Unconfined Space

12"

Recommended

Fresh Air Duct into Crawl Space in Furnace Area or in

Closet with Water Heater

Figure 15 - Ventilation Air from Inside Building

After providing ventilation between rooms, check for draft hood spillage (see Draft

Hood Spillage Test, page 17). If draft hood spillage still occurs, provide more

 

ventilation between rooms or provide permanent ventilation from outdoors. See

 

Providing Permanent Fresh-Air Ventilation, page 18.

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Desa CGB50N, CGB35N installation manual Example 2 Locating Heater in Confined Closed Area

CGB50N, CGB35N specifications

Desa CGB35N and CGB50N are high-efficiency gas burners designed for various residential and commercial heating applications. These models stand out for their advanced technology, reliability, and user-friendly features.

The CGB35N is a compact, wall-mounted gas burner designed for efficient space heating solutions. With a thermal output of up to 35 kW, it is ideal for smaller homes or commercial spaces that require effective heating without excessive energy consumption. The burner is equipped with a modulating output, which allows it to adjust its power based on heating demands, leading to significant energy savings and consistent comfort levels.

In contrast, the CGB50N provides a higher thermal output of 50 kW, making it suitable for larger spaces or applications requiring additional heating capacity. Both models are designed to operate quietly and efficiently, ensuring a comfortable environment while maintaining low operational noise levels.

One of the key features of both the CGB35N and CGB50N is their high-efficiency condensing technology. This technology captures and utilizes the heat from the exhaust gases that would typically be wasted in traditional heating systems, resulting in improved energy efficiency and reduced carbon emissions. The appliances boast low NOx emissions, adhering to stringent environmental regulations, making them an eco-friendly choice for conscientious consumers.

Installation and maintenance of both units are straightforward, thanks to their compact design and accessible components. They come equipped with an intelligent control system that monitors performance in real-time, ensuring optimal operation and enabling users to easily adjust settings via a digital interface. This user-centric design enhances the overall experience and allows for quick troubleshooting when necessary.

Additionally, both models support integration with smart home systems, allowing users to control heating remotely and set schedules tailored to their lifestyle. This feature not only improves convenience but also further optimizes energy usage.

In summary, the Desa CGB35N and CGB50N gas burners combine high efficiency, advanced technology, and user-friendly features to provide reliable heating solutions for diverse applications. Their outstanding performance, environmental consciousness, and smart capabilities make them ideal choices for modern heating needs.