Bradford-White Corp B4 warranty Pump W Relay LOW Water CUT-OFF Optional Power Switch

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Internet Version for Reference Only

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BRADFORD WHITE

 

 

 

 

IGNITION SYSTEM NO. 12 (SIZES 325-400)

ON/OFF WITH EM2

2 AMP

R

FUSE

WMANUAL

RESET

HI-LIMIT

 

TEMP

 

CONTROL

 

200°F MAX

R

 

 

 

R

 

 

 

 

R

BK - BLACK

W- WHITE

R - RED

Y - YELLOW BL - BLUE BR - BROWN O - ORANGE G - GREEN P - PURPLE

FACTORY WIRING 24V

115V

FIELD WIRING 24V 115V

TRANSFORMER

R

24V

Y Y

TERMINAL

STRIP 1 2 3

BK

115V

W

BR

O

Y

R

BR

P 1 2 3 4 5

BK

PUMP W

RELAY

A 1

R

T

3

B

LOW WATER

CUT-OFF (OPTIONAL)

POWER

 

SWITCH

BK HOT

BK

BL

115V/60HZ

 

POWER SUPPLY

 

W

WNEUTRAL

 

PUMP

GROUNDING

BR

CONDUCTOR

BR

BK

G

 

4

5

6

7

8

9

10

11

12

FIELD INTERLOCK

(REMOVE JUMPER

WHEN USED) FLOW SWITCH

BR

BR

Y

TH-TR

TR

BR

TH

IGNITION

CONTROL

BR

1

MV

Y

2

MV/PV

O

3

PV

 

 

4

GND

 

5

24V (GND)

 

6

24V

 

7

TH-W

 

8

MV

 

9

SPARK

SPARK

PILOT BURNER

WITH SPARK

 

ELECTRODE

 

SENSOR

Y

 

O

Y

IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE HEATER MUST BE REPLACED, IT MUST BE REPLACED WITH APPLIANCE WIRING MATERIAL 105°C (220°F) OR ITS EQUIVALENT. WHITE WIRES TO FUSIBLE LINK MUST BE REPLACED WITH WIRE HAVING INSULATION RATED AT 200°C (390°F). (AVAILABLE FROM FACTORY).

GAS VALVE

Figure 29. Typical example of wiring schematic, System 12, Sizes 325-400.

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Contents Copper Brute Table of Contents Warranty General InformationIntroduction Technical AssistanceInstallation Instructions Field AssemblySite Location Installation InformationOutdoor Installation Flooring Typical Installation Combustion and Ventilation Air SupplyMethod Outdoor Air SupplyIndoor Air Supply Exhaust Fans or VentsVenting of Combustion Products Water FlowGeneral Information Reversible Water ConnectionsHeat exchanger reversal Front Water Chemistry Freeze ProtectionWater Hardness Pump RequirementsCold water application Hot water supply with vertical tank Storage Tank Installation Pressure Buildup in Water SystemPressure Relief Valve Water PressureGeneral Instructions Gas Supply and PipingThermal Circulation of Hot Water Electrical Wiring Operating InstructionsCombined Space Heating/Potable Water Heating Systems 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 Remote Water Heater Temperature Control Start-Up ProcedureSetting the Temperature Controls Internal Water Heater Temperature Control Hi-Limit Switch CheckoutShut-Down Procedure General Instructions MaintenanceReplacement of Gas Controls Gas valve/burner replacement Cleaning the Heat Exchanger Inspecting the Heat ExchangerElectrical Troubleshooting Gas Pressure TestsChecking the Main Line Gas Pressure Checking the Manifold Regulated Gas PressureTesting the Transformer Heater Does Not Come OnTesting the Electrical Power Supply Testing the Manual Reset Hi-Limit SwitchTesting the Flow Switch Testing the Fusible Link Flame roll-out switchTesting the High Voltage Ignition Lead Testing the FuseTesting the Ignition Control for spark ignition Testing the Safety Shutoff for standing pilot Testing the Safety Shutoff For automatic pilotTesting the Igniter Electrode Testing the Pilot Thermocouple for standing pilotTesting for Burner Ignition For standing pilot Testing the Terminal Strip/ External ControlsHeater Will Not Shut Off 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.