Desa DNV40PB, DNV25PB installation manual Providing Gas Piping to Furnace, Example

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OWNER’S MANUAL

INSTALLATION

(Continued)

Providing Gas Piping to Furnace

You must provide gas piping from gas source to furnace. The gas piping must be in a vertical position where it connects to the furnace. This prevents interference with front cover installation.

Consult your local gas company for proper routing of the gas lines.

Pipe size is determined by the length of pipe from the gas source to the furnace and the total

BTU load on the gas source.

Add the total BTUs required for all appliances connected to the gas source including this furnace.

Divide this number by 2500. This will give you the approximate cubic feet per hour needed.

Example:

40,000 BTU/Hr

+15,000 BTU/Hr for other gas appliances

55,000 BTU/Hr total

55,000 ÷ 2500 = 22

Locate 22 or higher on chart below.

According to the chart below, you should use 40 feet or less of 3/8" pipe, 125 feet or less of 1/2" pipe, etc...

MINIMUM

 

 

 

 

 

 

 

 

 

 

 

 

 

IRON PIPE

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

 

 

 

 

LENGTH OF PIPE (FEET)

 

 

 

 

 

10

20

30

40

50

60

70

80

90

100

125

150

175

200

3/8"

47

32

26

22

19

18

16

15

14

13

12

11

10

—

1/2"

87

61

48

42

37

33

30

28

26

25

22

20

18

17

3/4"

184

126

100

86

76

69

63

59

55

52

48

42

39

36

1"

344

232

189

162

142

129

119

112

106

99

86

79

73

66

11/4"

696

484

391

331

291

265

245

232

212

202

182

166

149

139

11/2"

1060

729

590

504

444

404

371

351

324

305

272

252

232

212

2"

2022

1392

1094

961

842

762

696

656

616

576

517

470

430

404

21/2"

3182

2188

1790

1524

1326

1226

1127

1060

994

928

829

749

969

649

3"

5635

3911

3116

2718

2387

2154

1989

1856

1724

1657

1458

1326

1226

1127

4"

11602

7956

6431

5503

4906

4508

4110

3845

3580

3381

2983

2718

2519

2320

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IMPORTANT: Check gas line pressure at gas meter before connecting furnace to gas line. Gas line pressure must be no less than 11 inches of water and no greater than 13 inches of water. Gas pressures and input to the burners must not exceed the rated input and pressure shown on the rating plate. For propane/LP gas, manifold pressure should be 10 inches of water. For elevations above 2000 feet, reduce rating 4% for each 1000 feet above sea level (U.S.A. only).

CAUTION: Never connect heater directly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane/LP supply.

The installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down. Pointing the vent down protects it from freezing rain or sleet.

Continued

201839

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Contents OWNER’S Operation and Installation Manual DNV25PB DNV40PB For Your SafetyFor Your Safety What to do if YOU Smell GAS Dynavent Safety InformationSpecifications Product FeaturesLocal Codes UnpackingInstallation Items InstallationCheck GAS Type Locating FurnaceInstalling in Normal Frame Wall Installing ThermostatInstalling in Masonry Wall Creating Wall Opening and Mounting FurnaceRouting Thermostat Cable Locating Thermostat on WallConnecting to GAS Supply Connecting Furnace to Gas Supply at Front of FurnaceMounting the Thermostat to Wall 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 ConnectionsFor Your Safety Read Before Lighting Operating FurnaceOperating Instructions Normal Operating Sequence Inspecting Burner FlameTo Turn OFF GAS To Furnace Thermostat Control OperationCleaning and Maintenance Observed Problem Possible Cause Remedy TroubleshootingIgnition Failures Observed Problem Possible Cause Wire and wire connections at probe Parts Under Warranty Wiring Diagrams ReplacementParts not Under Warranty PartsTechnical Service Service HintsWhen Gas Pressure Is Too Low When Gas Quality Is BadCabinet 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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