DYNAVENT®

DIRECT-VENT NATURAL GAS HEATER

CLEANING AND MAINTENANCE

WARNING: Turn off and un- plug furnace and let cool before cleaning. Turn equipment shutoff valve to OFF position. Only a qualified service person should service and repair furnace.

WARNING: Keep furnace clear and free from combustible mate- rials, gasoline, and other flam- mable vapors and liquids.

CAUTION: You must keep control areas, burner, and circu- lating air passageways of furnace clean. Inspect these areas of fur- nace before each use. Have fur- nace inspected yearly by a quali- fied service person. Furnace may need more frequent cleaning due to excessive lint from carpeting, bedding material, pet hair, etc.

CAUTION: Label all wiring prior to disconnection when ser- vicing controls. Wiring errors can cause improper and dangerous operation.

Verify proper operation after ser- vicing.

CABINET

Air Passageways

Use a vacuum cleaner or pressurized air to clean.

Exterior

Use a soft cloth dampened with a mild soap and water mixture. Wipe cabinet and front cover to remove dust.

Use a vacuum cleaner to remove dust from front cover louvers.

EXHAUST AND INTAKE VENTS

Make sure the exhaust and intake vents are not blocked. The intake combustion air and the exhaust gases must be expelled to the outside. Have a qualified service person clean dirt and loose debris from vents annually.

GASKETS

Inspect all gaskets. If any gaskets show signs of leakage or damage, replace them. Safe operation of furnace depends on all gaskets being tight.

FRONT COVER

Remove anything that may be blocking the air to the louvers of the front cover.

COMBUSTION CHAMBER AND MAIN BURNER

Check flame pattern of main burner often (see Inspecting Burner Flame, page 13). Have combustion chamber and main burner cleaned if you have run the furnace with a high yellow flame. Incomplete combustion from lack of air causes the yellow flame. This deposits soot inside the combustion chamber and on the burner. Contact a quali- fied service person to clean combustion chamber and main burner.

OUTSIDE VENT CAPS

Inspect outside vent caps for obstructions or soot. If soot is found, do not use furnace. Contact a qualified service person to clean furnace.

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Desa DNV40NB, DNV25NB installation manual Cleaning and Maintenance

DNV25NB, DNV40NB specifications

Desa DNV25NB and DNV40NB are contemporary heating solutions designed to meet the demands of modern residential and commercial spaces. Both models integrate advanced technologies, ensuring efficient performance while promoting sustainability and energy conservation.

The DNV25NB is a compact and versatile unit, making it ideal for small to medium-sized environments. It boasts a nominal heating capacity of 25 kW, providing a reliable source of warmth during colder months. One of its main features is the innovative heat pump technology that extracts energy from the environment, thereby lowering electricity consumption compared to traditional heating systems. The unit is also equipped with advanced inverter technology, which allows it to adjust its output according to the heat demand. This results in reduced energy usage and lower utility bills, making it an economical choice for homeowners or businesses aiming to minimize operational costs.

On the other hand, the DNV40NB is designed for larger spaces, offering a robust heating capacity of 40 kW. This model features a dual-stage compressor that enhances its heating efficiency. This technology ensures quick heating response, allowing it to maintain a consistent indoor temperature even in extreme weather conditions. Furthermore, the DNV40NB incorporates smart control systems that enable users to manage settings through a mobile app, providing convenience and remote monitoring capabilities.

Both models are characterized by their eco-friendly refrigerants, which contribute to reduced greenhouse gas emissions. The units are also designed with user-friendly interfaces featuring digital displays, making operation intuitive. Additional safety features, including over-temperature protection and anti-freeze modes, ensure safe usage while prolonging the lifespan of the units.

In terms of installation, both DNV25NB and DNV40NB are designed for easy integration into existing systems. Their compact design enables flexibility in placement without compromising aesthetics. With their reliable performance, energy efficiency, and user-centric technologies, the Desa DNV25NB and DNV40NB offer compelling solutions for those seeking sustainable heating alternatives. Overall, they represent a forward-thinking approach to climate control, combining performance with environmental responsibility.