Outdoor Knight XL Installation & Operation Manual

4 Gas connections

Table 4A Natural Gas Pipe Size Chart

Nominal

 

 

 

 

Natural Gas Pipe Capacity Chart

 

 

 

 

Iron Pipe

 

 

 

 

Length of Pipe in Straight Feet

 

 

 

 

Size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(inches)

10

20

30

40

50

60

70

80

90

100

125

150

175

200

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/2

175

120

97

82

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

3/4

369

256

205

174

155

141

128

121

113

106

95

86

79

74

1

697

477

384

328

292

267

246

236

210

200

179

164

149

138

1-1/4

1400

974

789

677

595

543

502

472

441

410

369

333

308

287

1-1/2

2150

1500

1210

1020

923

830

769

707

666

636

564

513

472

441

2

4100

2820

2260

1950

1720

1560

1440

1330

1250

1180

1100

974

871

820

2-1/2

6460

4460

3610

3100

2720

2460

2310

2100

2000

1900

1700

1540

1400

1300

3

11200

7900

6400

5400

4870

4410

4000

3800

3540

3330

3000

2720

2500

2340

4

23500

16100

13100

11100

10000

9000

8300

7690

7380

6870

6150

5640

5130

4720

Maximum

Capacity of Pipe in Thousands of Btu/hr per hour for gas pressures of 14 Inches Water Column (0.5 PSIG) or less and a pressure drop of 0.5 Inch Water Column (Based on NAT GAS, 1025 Btu/ hr per Cubic Foot of Gas and 0.60 Specific Gravity)

Check inlet gas supply

NOTICE

CSA or UL listed flexible gas connections

are acceptable, but you must exercise

 

caution to ensure that the line has adequate

 

capacity to allow your boiler to fire at full

 

rate. Consult with local codes for proper

 

installation or service procedures.

￿WARNING DO NOT adjust gas valve outlet pressure. Attempting to alter the gas valve outlet

pressure could result in damage to the valve, causing potential severe personal injury, death, or substantial property damage.

The gas piping must be sized for the proper flow and length of pipe, to avoid excessive pressure drop. Both the gas meter and the gas regulator must be properly sized for the total gas load.

If you experience a pressure drop greater than 1 inch w.c. (249 Pa), the meter, regulator, or gas line is undersized or in need of service. Perform the steps below when checking inlet gas supply:

1.Turn the main power switch to the “OFF” position.

2.Shut off gas supply at the manual gas valve in the gas piping to the appliance.

3.On Models 400 - 501 loosen the set screw one (1) full turn from inside the pressure tap on top of the gas valve. On Models 601 - 801 remove the 1/8" (3 mm) pipe plug on the inlet flange to the valve and install a suitable 1/8" (3 mm) fitting (field supplied) for the manometer tubing. Place the tubing of the manometer over the tap once the set screw is loosened or the 1/8" (3 mm) fitting is installed (depending on model) as shown in FIG.’s 4-5 thru 4-7 on page 27.

4.Slowly turn on the gas supply at the field installed manual gas valve.

5.Turn the power switch to the “ON” position.

6.Adjust the temperature set point on the control panel of the SMART SYSTEM control module to call for heat.

7.Observe the gas supply pressure as the burner fires at 100% of rated input. Percent of burner input will be displayed on the control panel.

8.Ensure inlet pressure is within specified range. Minimum and maximum gas supply pressures are specified in this section of the manual.

9.If gas supply pressure is within normal range and no adjustments are needed, proceed on to Step 11.

10.If the gas pressure is out of range, contact the gas utility, gas supplier, qualified installer or service agency to determine the necessary steps to provide proper gas pressure to the control.

11.Turn the power switch to the “OFF” position.

12.Shut off the gas supply at the manual gas valve in the gas piping to the appliance.

13.Remove the manometer from the pressure tap on top of the gas valve. On Models 400 - 501 re-tighten the set screw inside the pressure tap. On Models 601 - 801 remove the 1/8" (3 mm) field supplied fitting and reinstall the pipe plug removed in Step 3.

26

Page 26
Image 26
Lochinvar 400-801 operation manual Check inlet gas supply, Inches

400-801 specifications

The Lochinvar 400-801 is a high-efficiency commercial boiler that embodies advanced engineering and cutting-edge technology. Designed for a variety of commercial applications, this boiler is known for its reliability, efficiency, and robust performance.

One of the standout features of the Lochinvar 400-801 is its high thermal efficiency, which can reach up to 99%. This efficiency not only reduces fuel consumption but also lowers operating costs, making it an economical choice for businesses seeking to minimize overhead. The boiler employs a stainless steel fire-tube heat exchanger that ensures optimal heat transfer and durability. This construction allows for enhanced resistance to corrosion, thereby extending the boiler's lifespan.

The Lochinvar 400-801 is equipped with advanced control technologies that enhance its performance. With its built-in SMART SYSTEM control, users can easily monitor and manage the boiler’s operations, optimizing performance while ensuring ease of use. This control system features a user-friendly interface that provides real-time data, including temperature settings, pressure readings, and operational status, allowing for quick diagnostics and efficient troubleshooting.

Safety is paramount in the design of the Lochinvar 400-801. The boiler includes a comprehensive safety system that incorporates multiple safety interlocks and a venting system that prevents backflow and ensures safe exhaust. Moreover, the unit is designed to operate with minimal noise, making it suitable for environments where noise reduction is crucial.

Installation and maintenance of the Lochinvar 400-801 are straightforward, thanks to its compact design and multiple venting options. The low-profile construction allows for flexibility in placement, making it an ideal fit for tight spaces. Maintenance tasks are simplified with accessible components, minimizing downtime and ensuring the system operates efficiently over its lifespan.

In conclusion, the Lochinvar 400-801 stands out in the commercial boiler market with its blend of efficiency, reliability, and innovation. With its advanced technologies and features, businesses can achieve significant energy savings while ensuring comfortable and consistent heat for various applications. The Lochinvar 400-801 is an investment in quality and performance, backed by a well-established brand in the heating industry. Whether for a new installation or a replacement, this boiler offers a comprehensive solution for commercial heating needs.