Lochinvar 801, 400 operation manual Check inlet gas supply, Inches

Page 48

Installation & Operation Manual

7 Gas connections

Table 7A 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 or attempt to measure gas valve outlet pressure. Attempting to alter

or measure 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 7-5 thru 7-7 on page 49.

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.

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Contents Models 400 Contents When servicing boiler Please read before proceedingKnight XL How it works Stainless steel heat exchangerModel Models 601 Ratings Knight XL Boiler =B=R RatingInstallation must comply with Closet and alcove installationsDetermine boiler location Before locating the boiler, checkAlcove Installation Residential garage installation Provide air openings to roomVent and air piping Flooring and foundationWhen using an existing vent system to install a new boiler Products to avoidAreas likely to have contaminants When removing a boiler from existing common vent system Prepare boiler Remove boiler from wood palletGas conversions Model Models 601 Leveling the boilerGeneral venting Direct venting options Vertical Vent Install vent and combustion air piping Requirements for installation in CanadaInstalling vent or air piping General ventingPVC/CPVC air intake/vent connections Vent Pipe, and FittingsAir inlet pipe materials Stainless steel ventFasNSeal Saf-T Vent Stainless Steel Air Intake/vent ConnectionsOptional room air Removing from existing ventModel Description Kit Number Air contaminationIf using the alternate sidewall termination Sidewall direct ventingVent/air termination sidewall Determine location3AClearance to Gravity Air Inlets Prepare wall penetrations Bird Screen TypicalPrepare wall penetrations Alternate Field Supplied Option Multiple vent/air terminationsTermination and fittings Sidewall termination installation Description and usage9Concentric Vent Dimensional Drawing Models 400 11Concentric Vent Sidewall Attachment Multiventing sidewall terminationsVertical direct venting Vent/air termination verticalPrepare roof penetrations Multiple vent/air terminationsVertical termination installation 4Concentric Vertical TerminationMultiventing vertical terminations Mm see -9,Alternate vertical concentric venting Concentric Venting ArrangementExisting vent as a chase 10Existing Vent as a ChaseHydronic piping System water piping methods General piping informationLow water cutoff device Chilled water systemHydronic piping Flow switch adjustment Near boiler piping componentsNear boiler piping connections Circulator sizingVariable speed pump option Head Feet Pressure20F 25F 30F 35F Model 7Single Boiler Multiple Temperatures 8Single Boiler Primary/Secondary Piping Number of Units Manifold Pipe Sizes in Inches mm10Multiple Boilers Primary/Secondary Piping Loop Connecting gas supply piping Gas connectionsNatural gas Propane GasCheck inlet gas supply InchesGas valve replacement Gas PressureField wiring Installation must comply withLine voltage connections Low voltage connectionsOutdoor temperature sensor Louver proving switchHigh gas pressure switch Low gas pressure switchFlow switch Alarm contactsWiring of the cascade ModbusManual Condensate disposal Condensate drainFreeze protection when used Start-upCheck/control water chemistry Fill and test water systemCheck for gas leaks Check thermostat circuitsInspect/fill condensate system Inspect/check condensate lines and fittingsFinal checks before starting the boiler Start the boilerIf boiler does not start correctly Check system and boilerFor Your Safety Read Before Operating Set space heating operation Natural Gas PropaneVerify DHW mode Set domestic hot water DHW operationConfiguration of the cascade Operating information GeneralProtection features Boiler temperature regulation Outdoor reset operation, if used CascadeSequence of operation Operation DisplayStandby, ready to start a new cycle Knight XL control module Navigation DialAccess modes InstallerUser Call for Heat Information Dial Function Maintenance Maintenance and annual startup Service technicianInstructions Maintenance Address reported problemsClean condensate trap Check all piping for leaks Inspect boiler areaFlue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Inspect ignition and flame sense electrodesCheck flame signal Cleaning boiler heat exchangerReview with owner Model Kit Part Component Number DescriptionDiagrams LOW Voltage 120 VAC High Voltage2Ladder Diagram Page KBXII-I-O Rev D
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400, 801 specifications

The Lochinvar 801,400 is a cutting-edge solution in the realm of high-efficiency commercial water heating. This model represents a significant advancement in the design and functionality of water heaters, catering primarily to the demands of large-scale facilities like hotels, hospitals, and large industrial operations.

One of the standout features of the Lochinvar 801,400 is its impressive heating capacity, which can produce up to 801,400 BTUs, making it suitable for high-demand applications. This output is crucial for establishments that require a consistent supply of hot water, such as commercial kitchens and laundry facilities. The robust design ensures that it can handle peak demand periods without compromising performance.

Another significant aspect is the innovative use of advanced technology in its operation. The Lochinvar 801,400 integrates smart controls that enhance its efficiency and ease of operation. These controls allow for precise monitoring and adjustment of water temperatures, ensuring that the system operates within optimal parameters while maximizing energy savings. The intelligent monitoring system can provide real-time updates, making it easier for facility managers to keep track of performance and address maintenance needs proactively.

The construction of the Lochinvar 801,400 incorporates durable materials that not only enhance the longevity of the unit but also offer resistance to corrosion and wear. This durability translates into lower maintenance costs and an extended lifespan for the unit, making it a worthwhile investment for businesses.

Moreover, the Lochinvar 801,400 is designed with energy efficiency in mind. It boasts a high thermal efficiency rating, which reduces operational costs and minimizes the carbon footprint of heating operations. This efficiency is critical in today’s environmentally conscious market, where businesses are seeking to reduce their energy consumption and comply with strict regulations.

The design of the Lochinvar 801,400 also prioritizes safety, featuring innovative safety controls and fail-safes that protect both the unit and the users.

In summary, the Lochinvar 801,400 offers a combination of high capacity, advanced technology, durability, and energy efficiency, making it an excellent choice for commercial water heating solutions. As industries continue to evolve, the demand for reliable and efficient water heating solutions like the Lochinvar 801,400 will only increase.
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