Desa DNV25PB, DNV40PB Checking GAS Connections, Pressure Testing Gas Supply Piping System

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DYNAVENT®

DIRECT-VENT PROPANE/LP GAS HEATER

INSTALLATION

(Continued)

Installation must include an equipment shutoff valve (supplied), ground joint union, plugged 1/8" NPT tap, and a sediment trap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from furnace (see Figure 15).

Install an equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Apply pipe joint sealant lightly to male threads. Prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged furnace valves.

CAUTION: Use pipe joint seal- ant that is resistant to liquid pe- troleum (LP) gas.

Install sediment trap in supply line as shown in Figure 15. Locate sediment trap where it is within reach for cleaning. A sediment trap traps moisture and contaminants. This keeps them from going into furnace controls. If sediment trap is not installed or is installed wrong, furnace may not run properly.

IMPORTANT: Locate sediment trap where trapped matter will not freeze. Install sedi- ment trap in a vertical run of pipe. If gas piping enters furnace from rear (outside), you must locate sediment trap in crawl space (see Figure 15). If you install furnace in structure with slab foundation, you must install gas piping to front of furnace (inside) (see Figure 15).

CHECKING GAS

CONNECTIONS

WARNING: Test all gas pip- ing and connections for leaks after installation or servicing. Correct all leaks at once.

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.

Pressure Testing Gas Supply Piping System

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

 

Gas Piping

Gas Piping

Equipment

Entering

 

Entering

Shutoff Valve

Furnace

 

Furnace

 

Front

 

Rear

Test Gauge

(Inside)

 

(Inside)

 

 

 

Connection

 

 

 

 

 

 

Equipment

To Gas Supply

 

 

Shutoff

3" Min.

 

 

Valve

 

 

 

Sediment

 

 

 

Trap

 

 

 

To Gas Supply

 

 

 

3" Min.

 

Slab Floor Installation

Test Gauge

Sediment

 

Connection

 

 

Trap

 

 

 

 

Crawl Space Installation

Figure 15 - Gas Connection

1.Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig (3.5 kPa) will damage heater regulator.

2.Cap off open end of gas pipe where equipment shutoff valve was connected.

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

4.Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles form- ing show a leak.

5.Correct all leaks at once.

6.Reconnect furnace and equipment shutoff valve to gas supply. Check re- connected fittings for leaks.

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201839

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Contents For Your Safety OWNER’S Operation and Installation Manual DNV25PB DNV40PBFor Your Safety What to do if YOU Smell GAS Safety Information DynaventLocal Codes Product FeaturesSpecifications UnpackingCheck GAS Type InstallationInstallation Items Locating FurnaceInstalling in Masonry Wall Installing ThermostatInstalling in Normal Frame 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 To Turn OFF GAS To Furnace Inspecting Burner FlameNormal Operating Sequence Thermostat Control OperationCleaning and Maintenance Troubleshooting Observed Problem Possible Cause RemedyIgnition Failures Observed Problem Possible Cause Wire and wire connections at probe Parts not Under Warranty Wiring Diagrams ReplacementParts Under Warranty PartsWhen Gas Pressure Is Too Low Service HintsTechnical Service 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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