Lochinvar 151-286 Check inlet gas supply, Single Unit Natural Gas Pipe Capacity Chart

Page 26

Outdoor Knight Boiler Installation & Operation Manual

4 Gas connections

Table 4A Natural Gas Pipe Size Chart

Nominal

 

 

 

 

 

 

Single Unit

 

 

 

 

 

 

 

 

 

 

Natural Gas Pipe Capacity Chart

 

 

 

 

Iron Pipe

 

 

 

 

 

 

 

 

 

 

 

Length of Pipe in Straight Feet for 1/2 PSI

 

 

 

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

￿WARNING

Outdoor boilers are typically shipped ready to fire on natural gas. Check boiler rating plate to determine which fuel the boiler is set for. If set to natural gas, it may be converted to LP by installing an orifice (see page 11). In order to operate on LP gas, an orifice MUST BE installed. Failure to comply could result in severe personal injury, death, or substantial property damage.

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.

3.

Loosen the set screw one (1) full turn from inside the

 

pressure tap on top of the gas valve. Place the tubing of

 

the manometer over the tap once the set screw is

 

loosened as shown in FIG. 4-3.

4.

Slowly turn on the gas supply at the field installed

 

manual gas valve.

5.

Turn the power switch to the “ON” position.

￿WARNING

DO NOT adjust gas valve outlet pressure. The gas valve is factory-set for the correct outlet pressure. This setting is suitable for natural gas and propane, requiring no field adjustment. 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.

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.

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., 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.

26

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. Re-tighten the set screw inside the pressure

 

tap.

Image 26
Contents Save this manual for future reference Contents When servicing boiler Please read before proceedingOutdoor Knight Boiler How it works Stainless steel heat exchangerModels 151 Model Ratings Outdoor Knight Boiler Ahri RatingBefore locating the boiler, check Installation must comply withDetermine boiler location Prevent combustion air contamination Provide clearancesOutdoor vent / air intake location Flooring and foundation Gas conversions Prepare boilerRemove boiler from wood pallet Leveling the boiler 286Hydronic piping Near boiler piping components Circulator sizing System temperature sensorNear boiler piping connections Indirect water heatersModel FeetPressure Minimum Pipe Pump Size GrundfosVariable speed pump option Smart System / Multi-temperature loop control optionVariable speed pump setup UP26-96 FC/VS IFC VS Stratos 1.25 3 xZone #1 Number of Units Model Required Pipe Sizes 6Single Boiler Multiple Temperatures 151 211 286 IMG00374 Number of Units 10Multiple Boilers Non-Zoned Primary/Secondary Piping Connecting gas supply piping Gas connectionsNatural gas Propane GasLength of Pipe in Straight Feet for 1/2 PSI Single Unit Natural Gas Pipe Capacity ChartCheck inlet gas supply Gas valve replacement Gas PressureLine voltage connections Field wiringInstallation must comply with Low voltage connectionsLow gas pressure switch Outdoor temperature sensorHigh gas pressure switch ThermostatWiring of the cascade Flow switch Runtime contactsAlarm contacts System supply sensor3Low Voltage Field Wiring Connections Condensate disposal Condensate drainCheck/control water chemistry Freeze protection when usedStart-up Fill and test water systemInspect/fill condensate system Check for gas leaksCheck thermostat circuits Inspect/check condensate lines and fittingsIf boiler does not start correctly Final checks before starting the boilerStart the boiler Check system and boiler2Operating Instructions Set space heating operation Natural Gas PropaneSet domestic hot water DHW operation Verify DHW modeConfiguration of the cascade How the boiler operates Operating informationGeneral How the control module operatesTemperature control Protection featuresBoiler temperature regulation Outdoor reset operation CascadeSequence of operation Operation DisplayStandby, ready to start a new cycle Outdoor Knight boiler control module Access modesInstaller UserCall for Heat Operating information Dial Function Owner maintenance Maintenance Maintenance and annual startupService technician Maintenance Check expansion tank Flue vent system and air pipingCheck water system Check boiler relief valveCheck control settings Check ignition ground wiringCheck all boiler wiring Check flame signalOiled bearing circulators Cleaning boiler heat exchangerReview with owner Model Kit Part Component Number DescriptionDiagrams PC Interface120 VAC High Voltage

151-286 specifications

Lochinvar 151-286 is a high-efficiency water heater designed for both residential and commercial applications. This model stands out due to its advanced technology, user-friendly controls, and robust construction, making it a reliable choice for those seeking to optimize their hot water supply.

One of the key features of the Lochinvar 151-286 is its impressive heating capacity. With a maximum input of 286,000 BTU/hr, it can efficiently meet hot water demands for a variety of settings, including hotels, restaurants, and other commercial facilities. This substantial output ensures that even during peak usage hours, hot water availability is maximized, reducing wait times and enhancing customer satisfaction.

The water heater utilizes a state-of-the-art condensing technology that maximizes efficiency by capturing and utilizing flue gas heat. This process allows the Lochinvar 151-286 to achieve an impressive thermal efficiency rating of up to 98%. The benefit of such high efficiency translates to significant energy savings and reduced operational costs over time, making it an environmentally friendly option as well.

The Lochinvar 151-286 is equipped with a user-friendly control system featuring advanced microprocessor controls. These controls allow for precise temperature management and monitoring, enabling users to set optimal temperatures according to their specific needs. Additionally, the heater includes built-in diagnostics, allowing for easy troubleshooting and maintenance, which minimizes downtime and extends the life of the unit.

Another standout characteristic of the Lochinvar 151-286 is its durable construction. Built with high-quality materials, including a robust stainless steel heat exchanger, this model is designed to withstand the rigors of daily use. The unit also features a compact design, which facilitates easy installation in various locations, whether it be in a utility closet or alongside existing equipment.

Safety features are paramount in the Lochinvar 151-286, with multiple safeguards in place to protect against overheating and other potential issues. The unit is designed to operate reliably, ensuring peace of mind for users who depend on consistent hot water availability.

In summary, the Lochinvar 151-286 water heater combines high capacity, exceptional efficiency, and user-friendly technology, making it an excellent choice for those seeking reliable hot water solutions. Its advanced features deliver performance and durability that stand out in the competitive market of water heating systems.