Desa DNV40PB, DNV25PB Pressure Testing Furnace Gas Connections, Performance Check

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OWNER’S MANUAL

INSTALLATION

(Continued)

CONNECTING TO

ATTACHING CABINET

ELECTRICAL SUPPLY

FRONT COVER

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1.Close equipment shutoff valve (see Fig- ure 16).

2.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

3.Check all joints from gas meter to equipment shutoff valve. Apply mix- ture of liquid soap and water to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Pressure Testing Furnace Gas Connections

1.Open equipment shutoff valve (see Fig- ure 16).

2.Open main gas valve located on or near gas meter.

3.Make sure control knob of furnace is in the OFF position.

4.Check all joints from equipment shutoff valve to gas inlet pipe. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Turn on furnace (see Operating Fur- nace, pages 12 and 13). Check the rest of the internal joints for leaks.

7.Turn off furnace (see To Turn Off Gas to Furnace, page 13).

On Position

Off Position

Figure 16 - Equipment Shutoff Valve

IMPORTANT: Follow all local codes when connecting electricity to furnace. In the ab- sence of local codes, refer to the latest edi- tion of the National Electrical Code ANS/ NFPA No. 70. If you are not familiar with wiring codes, have a qualified electrician do the wiring.

It is best to plug furnace into a separate and permanent electrical line circuit.

1.Supply a 120-volt, 60-cycle, grounded outlet at furnace location.

2.The furnace has a three-pronged (grounded) plug. Use only a grounded, three-prong outlet.

IMPORTANT: Some local codes require rigid or semi-rigid conduit or metallic sheathe cable. When using a semi-rigid or metallic sheathe cable, the installer must terminate the supply wire in the terminal box opening.

Performance Check

Plug furnace into three-pronged outlet. If ignitor remains on after main burner igni- tion or if the valve chatters, you may have reversed polarity.

1.Unplug furnace.

2.Turn off electricity to outlet.

3.Reverse 120-volt connections inside outlet.

4.Turn on electricity to outlet.

5.Plug in furnace. Ignitor should turn off after main burner ignites. If ignitor does not turn off, or if valve continues to chatter, turn off furnace and unplug. Call a qualified service person.

CAUTION: Do not operate fur- nace with front cover removed or mounted wrong. If front cover is mounted wrong, you cannot se- cure it to cabinet with screws.

1.Hook top of front cover over top cabi- net flange.

2.Secure the sides of front cover to lower sides of furnace cabinet with two screws provided (see Figure 17).

IMPORTANT: You may have removed fur- nace from furnace cabinet during installa- tion. You must correctly install furnace within cabinet. If not, front cover will not properly attach to cabinet. Make sure gas- kets for intake and exhaust tubes are in place. Make sure intake and exhaust tubes extend into vent caps on cabinet back and are secured with screws. Make sure you secured flange on bottom of furnace to flange on bottom front of cabinet.

Figure 17 - Attaching Front Cover to Cabinet

201839

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Contents For Your Safety What to do if YOU Smell GAS OWNER’S Operation and Installation Manual DNV25PB DNV40PBFor Your Safety Dynavent Safety InformationUnpacking Product FeaturesSpecifications Local CodesLocating Furnace InstallationInstallation Items Check GAS TypeCreating Wall Opening and Mounting Furnace Installing ThermostatInstalling in Normal Frame Wall Installing in Masonry WallRouting Thermostat Cable Locating Thermostat on WallMounting the Thermostat to Wall Connecting to GAS SupplyConnecting Furnace to Gas Supply at Front of Furnace Removing Screws on Lower Flange 40,000 BTU/Hr Model Shown Connecting Furnace to Gas Supply at Rear of FurnaceExample Providing Gas Piping to FurnaceChecking GAS Connections Pressure Testing Gas Supply Piping SystemPerformance Check Pressure Testing Furnace Gas ConnectionsOperating Instructions For Your Safety Read Before LightingOperating Furnace Thermostat Control Operation Inspecting Burner FlameNormal Operating Sequence To Turn OFF GAS To FurnaceCleaning and Maintenance Observed Problem Possible Cause Remedy TroubleshootingIgnition Failures Observed Problem Possible Cause Wire and wire connections at probe Parts Wiring Diagrams ReplacementParts Under Warranty Parts not Under WarrantyWhen Gas Quality Is Bad Service HintsTechnical Service When Gas Pressure Is Too LowCabinet Assembly 25,000 BTU/HR Model Illustrated Parts ListCabinet 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 201839 Warranty Information

DNV40PB, DNV25PB specifications

Desa DNV25PB and DNV40PB are two advanced models in the range of DNV portable heaters renowned for their efficiency and innovative technology. These heaters are designed to provide reliable and effective heating solutions for various applications, from industrial settings to outdoor events.

One of the standout features of the DNV25PB and DNV40PB models is their robust construction, making them suitable for rigorous work environments. Both models are built with high-quality materials that ensure durability and resilience even in challenging conditions. This makes them an ideal choice for industries such as construction, warehouses, and agriculture, where reliable heating is essential.

The performance of the DNV heaters is enhanced by their powerful heating capacity. The DNV25PB model can deliver an impressive output of 25 kW, while the DNV40PB model boasts a strong 40 kW output. This substantial heating capability allows them to heat large spaces quickly and efficiently, providing comfort in less time and reducing energy costs. Additionally, both models come equipped with adjustable heating settings, allowing users to tailor the output to meet their specific needs.

These heaters incorporate advanced technologies that prioritize energy efficiency and safety. They are designed with smart control systems that monitor and adjust the heater's operation, optimizing fuel consumption while delivering consistent heat. Furthermore, safety features such as automatic shut-off mechanisms and overheating protection devices are integrated into both models, ensuring safe operation even in extended use.

Portability is another significant characteristic of the DNV25PB and DNV40PB models. Their compact design, coupled with built-in handles and wheels, allows for easy transport between different sites, making them highly versatile. Users can effortlessly relocate the heaters to adapt to changing conditions or requirements, enhancing their practicality.

In summary, the Desa DNV25PB and DNV40PB portable heaters are characterized by their powerful heating capabilities, robust construction, energy efficiency, and safety features. They are well-suited for various industrial and outdoor applications, offering flexibility and reliable performance. With their innovative technology and thoughtful design, these models stand out in the market, providing effective heating solutions to meet diverse needs. Whether for temporary heating at a construction site or providing warmth for outdoor gatherings, the DNV series offers dependable performance tailored to user requirements.
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