Desa DNV40NB Check GAS Type, Installation Items, Locating Furnace, Minimum Clearances

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DYNAVENT®

DIRECT-VENT NATURAL GAS HEATER

INSTALLATION

Mounting hardware needed to mount fur- nace into wall is included with the furnace. No venting material is needed. You must furnish tools and all gas piping from the gas source to the furnace inlet.

WARNING: A qualified ser- vice person must install furnace. Have service person inspect fur- nace before use and at least an- nually. Follow all local codes.

NOTICE: This furnace must be electrically grounded. Follow all local codes. In the absence of local codes, follow the National Electric Code, ANS/NFPA 70 (U.S.) or Canadian Electrical Code Part I-CSA C22.1 (Canada).

CHECK GAS TYPE

Use only natural gas. If your gas supply is not natural gas, do not install furnace. Call dealer where you bought furnace for proper type furnace.

INSTALLATION ITEMS

Before installing furnace, make sure you have all items below:

•electric drill

•drill bits

•Phillips screwdriver

•hammer

•pipe wrench

•stud locator or small finishing nails

•equipment shutoff valve (supplied)

•test gauge connection (see Figure 15, page 10)

•piping (check local codes)

•sealant (resistant to propane/LP gas)

•ground joint union

•sediment trap

•tee joint

LOCATING FURNACE

This furnace is designed to be mounted in a wall that is 4 to 18 inches thick. You can also mount furnace in a window.

WARNING: Do not install fur- naceininteriorwallofbuilding.You must install furnace in exterior wall of building. Rear of furnace must extend into open, outside air. This lets poisonous exhaust gases ven- tilate to the outdoors.

WARNING: Turn off electrical circuits that pass through the wall where you are going to install the furnace.

WARNING: Maintain the mini- mum clearances shown in Figure

1.If you can, provide greater clear- ances from floor, ceiling, and joining wall.

WARNING: Due to high tem- peratures,neverinstallthefurnace:

•in an inside wall

•in a recreation vehicle

•in a window recessed in a thick wall (creating an alcove)

•in an alcove

•behind a door or where an open doorwouldblocknormalairflow

•as a fireplace insert

•in high traffic areas

•near furniture or draperies

•in windy or drafty areas

CAUTION: If you install the furnace in a home garage, locate furnace where moving vehicle will not hit it.

Forconvenienceandefficiency,installfurnace:

•where there is easy access for operation, inspection, and service

•in a central location, near an electrical outlet

•where there is adequate clearance around vents outside

Before installing furnace, inspect the wall, floor, and outside areas. Make sure there are no pipes, wiring, or anything else that would interfere with furnace installation. If you are installing thermostat in a wall, make sure there are no pipes or wiring in the hollow wall above the furnace. The thermostat wires will pass through this wall from the attic.

Minimum Clearances

Provide the following minimum clearances from furnace front cover to combustibles (as viewed from the front of furnace, see Figure 1):

Below Front Cover: 6 inches

Above Front Cover: 12 inches

Adjoining Wall: 12 inches

Front: 8 feet

Ceiling

12" Minimum

12" Minimum

Adjacent

Side Wall

6" Minimum

Finished Floor, Carpet, Tile, etc.

Figure 1 - Mounting Clearances as Viewed from Front of Furnace

The clearance between the cabinet and the wall it passes through is 0 inches.

Provide the following minimum clearances from furnace cabinet (portion of cabinet extending into outside air, as viewed from the rear of furnace) to obstructions:

Cabinet Back: 36 inches

Cabinet Sides: 6 inches

Cabinet Bottom: Must be high enough off the ground to prevent snow, water, leaves, or any other objects from block- ing vents.

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201835

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Contents For Your Safety OWNER’S Operation and Installation Manual DNV25NB DNV40NBFor Your Safety What to do if YOU Smell GAS Safety Information DynaventProduct Features SpecificationsLocal Codes UnpackingInstallation Installation ItemsCheck GAS Type Locating FurnaceInstalling Thermostat Installing in Normal Frame WallInstalling in Masonry Wall Creating Wall Opening and Mounting FurnaceLocating Thermostat on Wall Routing Thermostat CableConnecting Furnace to Gas Supply at Front of Furnace Connecting to GAS SupplyMounting the Thermostat to Wall Connecting Furnace to Gas Supply at Rear of Furnace Removing Screws on Lower Flange 40,000 BTU/Hr Model ShownProviding Gas Piping to Furnace ExamplePressure Testing Gas Supply Piping System Checking GAS ConnectionsPressure Testing Furnace Gas Connections Performance CheckOperating Furnace For Your Safety Read Before LightingOperating Instructions Inspecting Burner Flame Normal Operating SequenceTo Turn OFF GAS To Furnace Thermostat Control OperationCleaning and Maintenance Troubleshooting Observed Problem Possible Cause RemedyIgnition Failures Observed Problem Possible Cause Wire and wire connections at probe Wiring Diagrams Replacement Parts Under WarrantyParts not Under Warranty PartsService Hints Technical ServiceWhen Gas Pressure Is Too Low When Gas Quality Is BadIllustrated Parts List Cabinet Assembly 25,000 BTU/HR ModelCabinet Assembly 40,000 BTU/HR Model Combustion Chamber Assembly 25,000 BTU/HR Model Combustion Chamber Assembly 40,000 BTU/HR Model Burner Assembly 25,000 BTU/HR Model Burner Assembly 40,000 BTU/HR Model Blower Assembly 25,000 BTU/HR Model Blower Assembly 40,000 BTU/HR Model 201835 Limited Warranty Dynavent GAS Wall Furnace International

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.
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