Bradford-White Corp B4 warranty Testing the Safety Shutoff for standing pilot

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BRADFORD WHITE

 

 

 

 

5.2.10 Testing the Safety Shutoff (for standing pilot)

After lighting the heater, test the ignition system safety shutoff.

1.With the main burners firing, turn the gas valve control knob off.

2.Turn power to the heater off.

3.Set the temperature control to its lowest setting.

4.Wait 5 minutes.

Caution

Flame Hazard. Failure to wait 5 minutes, or not turning the gas valve knob to OFF, may cause the flow of unlighted main burner gas.

5.Turn the gas valve control knob to the PILOT position.

6.Without pressing the control knob down, it should be impossible to light the pilot.

7.Relight the pilot following the lighting instructions found on the inside of the heater.

8.Reset the temperature control.

9.Light the heater following the instructions found on the inside of the heater.

5.2.11 Testing the Safety Shutoff

(for automatic pilot)

1.Find the red silicone rubber insulated wire that runs from the pilot to the ignition stud on the ignition control module.

2.With the main burners firing, use an insulated pair of pliers to disconnect the sensor wire from the control module. Do not pull on the wire. The main burner flame should immediately go out.

3.Turn the gas valve control knob to the off position.

4.Reattach the red silicone wire to the control module.

5.2.12 Testing the Igniter Electrode

To test the igniter electrode:

1.Make sure all of the wire connections on the ignition control and the gas valve are tight.

2.Make sure the wiring agrees with the wiring diagrams found on the inside of the heater.

3.Check for sparking at the igniter electrode.

4.If there is sparking at the igniter electrode, but there is no pilot ignition after 10-20 seconds, clip a lead from the voltmeter between the yellow wire terminal on the transformer and the orange wire terminal on the gas valve.

5.If the voltmeter does not show voltage, replace the ignition control.

6.If the voltmeter reads 24 to 28VAC, but there is no pilot ignition, check for

a:air in gas lines.

b:restrictions in gas line, valve or pilot tubing.

c:clogged pilot orifice.

If these are correct then replace gas valve (see Section 4.2).

WARNING

Never attempt to repair the gas valve. Such attempts will void the warranty, and could lead to dangerous results.

5.2.13 Testing the Pilot Thermocouple (for standing pilot)

If there is voltage to the gas valve, the pilot is lit, the thermocouple is properly positioned, the temperature control is set high enough to call for heat; then the gas valve or the pilot thermocouple may be the problem. To test the pilot thermocouple:

1.Remove the pilot thermocouple fitting from the gas valve.

2.Clip one lead of a millivolt meter on the center post of the tube and the other lead on the copper pilot thermocouple shield. Turn the gas valve control knob to the “Pilot” position, depress it, and light the pilot. You will have to keep the gas valve control knob depressed throughout this test.

3.If the millivolt meter reads about 30 millivolts, go to step 5.

4.If the millivolt meter does not show voltage or voltage is very low, it could indicate a dirty or clogged pilot. Clean and recheck the pilot thermocouple. If voltage still does not show or is very low, replace the pilot thermocouple.

5.To test the pilot thermocouple under load, screw the pilot thermocouple into the end of a millivolt reading adapter (see Figure 42).

6.Clip one lead of a millivolt meter to either side of the millivolt adapter and clip the other lead to ground.

7.Light the pilot following the instructions found on the inside of the heater.

8.Set the temperature control high enough to call for heat.

9.With the heater firing, take a millivolt reading.

10.If the millivolt meter does not read about 10 millivolts, replace the pilot thermocouple.

5.2.14 Testing for Pilot Burner (for spark ignition)

When the pilot burner lights, the sparking should stop and the main burners should fire. If the sparking continues and the main burners do not fire:

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Contents Copper Brute Table of Contents Introduction WarrantyGeneral Information Technical AssistanceInstallation Instructions Field AssemblyInstallation Information Outdoor InstallationSite Location Flooring Typical Installation Combustion and Ventilation Air SupplyIndoor Air Supply MethodOutdoor Air Supply Exhaust Fans or VentsGeneral Information Venting of Combustion ProductsWater Flow Reversible Water ConnectionsHeat exchanger reversal Front Water Hardness Water ChemistryFreeze Protection Pump RequirementsCold water application Hot water supply with vertical tank Pressure Relief Valve Storage Tank InstallationPressure Buildup in Water System Water PressureGas Supply and Piping Thermal Circulation of Hot WaterGeneral Instructions Combined Space Heating/Potable Water Heating Systems Electrical WiringOperating Instructions Normal Operating SequenceIgnition System no Sizes ON/OFF with EM2 Ignition System no Sizes ON/OFF with EM2 18BRADFORD WhiteIgnition System no Sizes ON/OFF with Em2Pump W Relay LOW Water CUT-OFF Optional Power Switch Start-Up Procedure Setting the Temperature ControlsRemote Water Heater Temperature Control Hi-Limit Switch Checkout Shut-Down ProcedureInternal Water Heater Temperature Control Maintenance Replacement of Gas ControlsGeneral Instructions Gas valve/burner replacement Cleaning the Heat Exchanger Inspecting the Heat ExchangerChecking the Main Line Gas Pressure Electrical TroubleshootingGas Pressure Tests Checking the Manifold Regulated Gas PressureTesting the Transformer Heater Does Not Come OnTesting the Flow Switch Testing the Electrical Power SupplyTesting the Manual Reset Hi-Limit Switch Testing the Fusible Link Flame roll-out switchTesting the Fuse Testing the Ignition Control for spark ignitionTesting the High Voltage Ignition Lead Testing the Igniter Electrode Testing the Safety Shutoff for standing pilotTesting the Safety Shutoff For automatic pilot Testing the Pilot Thermocouple for standing pilotHeater Will Not Shut Off Testing for Burner Ignition For standing pilotTesting the Terminal Strip/ External Controls On-Off Main Burner CyclingBradford White

B4 specifications

Bradford-White Corp B4 is a remarkable water heater that embodies innovation, efficiency, and reliability. This product is designed to meet the stringent demands of both residential and commercial applications, making it a versatile choice for various users.

One of the standout features of the Bradford-White B4 is its high-efficiency operation. With advanced insulation technologies, this water heater minimizes heat loss, allowing it to perform efficiently while conserving energy. This efficiency translates to significant cost savings on utility bills, making the B4 an economical option over its lifespan.

Moreover, the B4 employs a robust and durable construction. Engineered with top-quality materials, it boasts a glass-lined tank that prevents corrosion and extends the longevity of the unit. This durable design ensures that users can rely on their water heater for many years, thus reducing the frequency of replacements and repairs.

The Bradford-White B4 is equipped with state-of-the-art technologies to enhance user convenience. Among these technologies is the ICON System, which features an advanced gas control. This control system allows for precise temperature management and ensures optimal performance. Additionally, the B4 comes with a built-in diagnostic system that provides insight into the operation of the unit, helping users identify potential issues before they escalate.

Another significant characteristic of the B4 is its variety of sizes and configurations. This versatility allows for easy installation in different spaces, whether it be a compact utility room or a larger commercial setup. Available in various capacities, the B4 can efficiently deliver hot water for various needs, catering to families of different sizes or businesses with diverse requirements.

Safety is also a top priority for Bradford-White. The B4 includes safety features such as a temperature and pressure relief valve, which acts as a safeguard against potential malfunctions. This adds an extra layer of peace of mind for users concerned about operational safety.

In summary, the Bradford-White Corp B4 combines high efficiency, durable construction, advanced technologies, versatility, and safety features. This makes it more than just a water heater—it is a dependable solution for ensuring hot water availability for various applications. Whether for a home or a commercial setting, the B4 represents a commitment to quality and performance that users have come to trust.
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