Bradford-White Corp PE4503*F(BN,SX), PE440T*F(BN,SX), PE4403S*F(BN,SX) Control Timings

Page 8

Specifications

Control Timings

Ignition State

Timing

 

 

Energize Relay and Verify (Closed Circuit)

15 seconds

 

 

Trial for Ignition

90 seconds

 

 

Flame Stabilization Period

3 seconds

 

 

Re-energize Relay and Verify

15 seconds

 

 

Flame Failure Response Time

1.5 seconds (2 second maximum; 1 second

minimum)

 

 

 

De-energize Relay and Verify (Open Circuit)

15 seconds

 

 

Relay Fault (failed open/close)

Retry after 2 minutes

 

 

Soft Lockout

Retry after 5 minutes

 

 

ECO Limit Lockout

Indefinite (See page 11 to reset)

 

 

Verify Resistive Delay

Retry after 2 minutes (repeats 5 times)

 

 

Simulated Resistive Load Lockout

Indefinite (cycle power to reset)

 

 

Hardware Error Lockout

Indefinite (self clears if fault clears for at least 15

seconds)

 

 

 

 

Wiring Diagram

PILOT

GAS VALVE

 

Honeywell

B

A

HOT

C

 

E

R

Y

 

 

T

V

 

 

O

 

 

H

 

 

 

 

 

 

W

BL BK

BK R BK

G W Y

BK

BKG W

POWER CORD

 

 

W

BK

W

G

W

BK

 

 

 

 

 

G

 

 

W

BL

 

 

 

 

 

R Y

 

SETBACK CONTROL

JUNCTION BOX

L

 

 

O

W BK

R

W

 

 

FLAMMABLE

 

 

VAPOR SENSOR

BK

BK BK

WATER

 

 

TEMPERATURE

 

 

SENSOR

RE-SETTABLE

THERMAL SWITCH

 

ACCESSORY

 

MODULE

BK

RBK

W

W

 

PLUG-IN

TRANSFORMER

AC AC

W BK

Page 8

SETBACK CONTROL

 

8

Image 8
Contents Service Manual Table of Contents Page Page Bradford White Defender Safety System IntroductionHow to Use this Manual How to Use this ManualSpecifications SpecificationsControl Timings Power Up Sequence Sequence of OperationNormal Heating Sequence Relay EnergizedNormal Heating Sequence cont’d Trial for Ignition Fault Abnormal Operation cont’d Temperature Sensor FaultSafety Circuit Fault Abnormal Operation cont’d Flame Sensing Fault Troubleshooting LED Status Control Status Probable Cause Service ProcedureTroubleshooting Gas Valve / Control Model LED Status Accessory Module Probable Cause Burner Inspection Burner MaintenanceBurner Cleaning Procedure Unscrew the burner from the main burner orifice Burner Cleaning Procedure cont’d Pilot Inspection, Testing, and ReplacementPilot Maintenance Pilot Inspection, Testing, and Replacement cont’dThermal Well Testing Determine Water Temperature Inside Tank Thermal Well TestingThermal Well Testing cont’d Sensor Resistance at Various Temperatures Determine Tank TemperatureDetermine Water Temperature Inside Tank cont’d Component Disassembly Gas Control & Thermal Well Removal From Water HeaterGas Control Removal Gas Control Removal From Thermal WellGas Control Assembly to the Thermal Well Gas Control Removal From Thermal Well cont’dFlammable Vapor Sensor Testing Gas Control AssemblyGas Control Assembly to the Thermal Well cont’d Flammable Vapor Sensor Testing Flammable Vapor Sensor Testing cont’dRelay Replacement VAC Circuit TraceRelay Replacement Relay Replacement cont’dCommon Terms Common TermsParts List Part Name and DescriptionParts@bradfordwhite.com Techserv@bradfordwhite.com

PE4403S*F(BN,SX), PE440T*F(BN,SX), PE4503*F(BN,SX), PE2XR504T*F(BN,SX) specifications

Bradford-White Corporation is a renowned manufacturer of water heating and storage products, well-regarded for its commitment to quality and innovation. Among its diverse product lineup, the PE2XR504T*F(BN,SX), PE4503*F(BN,SX), PE440T*F(BN,SX), and PE4403S*F(BN,SX) models stand out for their technology, efficiency, and performance. These commercial electric water heaters are designed for demanding applications, making them ideal for various settings, including restaurants, hotels, and industrial facilities.

One of the most notable features across these models is the use of advanced heating elements, which are engineered to provide rapid recovery and consistent hot water temperatures. This capability ensures that businesses can rely on a continuous supply of hot water, particularly during peak demand periods. The tanks are constructed with high-quality materials that guarantee durability and longevity, reducing the need for frequent replacements.

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Safety is paramount in the design of these units. The incorporation of advanced safety features, including a self-resetting thermal cutoff and a high limit switch, helps protect against overheating. Furthermore, these models are built with a robust insulation system, which reduces heat loss and improves overall energy efficiency.

In terms of versatility, the PE2XR504T*F(BN,SX), PE4503*F(BN,SX), PE440T*F(BN,SX), and PE4403S*F(BN,SX) can be easily integrated into existing plumbing systems. They are available in various capacities and configurations, catering to a wide range of commercial needs. With their combination of cutting-edge technology, reliability, and safety features, these Bradford-White models are an excellent investment for any commercial establishment seeking efficient and dependable hot water solutions.