Desa DNV25PB, DNV40PB installation manual Connecting Furnace to Gas Supply at Rear of Furnace

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DYNAVENT®

DIRECT-VENT PROPANE/LP GAS HEATER

INSTALLATION

(Continued)

Connecting Furnace to Gas Supply at Rear of Furnace

1.Remove the two screws in back of fur- nace cabinet located by the exhaust vent(s) (see Figures 9 and 10).

2.Remove two screws on front lower flange that attach furnace flange to fur- nace cabinet flange (see Figure 11). Note: 40,000 BTU/Hr model has a bot- tom shield (see parts list, page 22, for location). Removing two screws will detach bottom shield.

3.Slide furnace out of furnace cabinet.

4.Locate gas inlet pipe on lower, right front of furnace.

5.40,000 BTU/Hr Model Only: Remove screw holding gas inlet pipe clamp to furnace.

6.Disconnect gas inlet pipe from 3/8" manifold elbow. Turn gas inlet pipe counter-clockwise to disconnect (see Figure 12).

7.Rotate the 3/8" manifold elbow 90° so the opening is pointing downward (see Figure 12).

8.Locate knockout plug in furnace cabi- net. Knockout plug is in lower left rear of furnace cabinet (as viewed from rear, see Figure 13). Remove knockout plug.

9.Slide furnace back into furnace cabi- net. Make sure exhaust tube gaskets are in place. Make sure exhaust and intake vent tubes extend into vent caps on back of cabinet. Replace two screws by exhaust vent(s) removed in step 1.

10.25,000 BTU/Hr Model: Replace two screws removed in step 2. Attach fur- nace flange and furnace cabinet lower flange together.

40,000 BTU/Hr Model: Place bottom shield back in place. Replace two screws removed in step 2. Attach bot- tom shield, furnace flange, and furnace cabinet lower flange together.

11.Run 3/8" pipe or nipple through knock- out hole. Connect 3/8" pipe or nipple to manifold elbow (see Figure 14). See Providing Gas Piping to Furnace, pages 9 and 10 for correct gas pipe in- stallation.

12.Check connections for gas leak.

WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

13.Caulk around pipe or nipple. This pre- vents cold air entering knockout hole.

Figure 9 - Locations of Screws in Back of Furnace Cabinet (25,000 BTU/Hr Model)

Figure 10 - Locations of Screws in Back of Furnace Cabinet (40,000 BTU/Hr Model)

Furnace

Furnace Flange

Cabinet

Flange

Figure 11 - Removing Screws on Lower Flange (40,000 BTU/Hr Model Shown)

Remove Screw,

40,000 BTU/Hr

Model Only

Gas Inlet

Pipe

Manifold Elbow

Figure 12 - Disconnecting Gas Inlet Pipe (40,000 BTU/Hr Model Shown)

Knockout Plug

Figure 13 - Location of Knockout Plug

3/8" NPT

Figure 14 - Inserting Pipe through Knockout Hole

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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 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 CableMounting the Thermostat to Wall Connecting to GAS SupplyConnecting Furnace to Gas Supply at Front of Furnace 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 Instructions For Your Safety Read Before LightingOperating Furnace 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 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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