Bradford-White Corp TG237E-N(X), TG-237E-N(X)A Troubleshooting Electrical, Wire Color

Page 37

Troubleshooting – Electrical

There are a number of (live) tests that are required when fault finding this product. Extreme care should be used at all times to avoid contact with energized components inside the water heater. Only trained and qualified service technicians should attempt to repair this product. Before checking for resistance readings, disconnect the power source to the unit and isolate the item from the circuit (unplug it).

Table 11. (SV1, SV2, SV3, and POV) Gas Valve and Modulating Solenoids (Set Meter Above 2k).

Wire Color

Voltage

Resistance

Connector

Pin

No.

Nos.

 

 

 

(Main) Pink-Black

11-13 VDC

36.8-44.8 ohms

H5

6-7

(SV1) Black-Yellow

11-13 VDC

36.8-44.8 ohms

H6

5-6

(SV2) Black-Blue

11-13 VDC

36.8-44.8 ohms

H7

4-6

(SV3) Black-Brown

11-13 VDC

36.8-44.8 ohms

H8

3-6

(POV) Pink-Pink

2-15 VDC

67-81 ohms

H3

9-10

Table 12. (M) Water Flow Control Device Servo or Geared Motor.

Wire Color

Voltage

Resistance

Connector

Pin

No.

Nos.

 

 

 

Red-Blue

11-13 VDC

22-28 ohms

F7

9-10

Grey-Brown

4-6 VDC

n/a

F7

5-7

Grey-Yellow

n/a

n/a

F7

5-8

Note: The grey

wire listed above

turns to black at F connector on the PCB.

 

Table 13. (QS) Water Flow Sensor.

 

 

Wire Color

Voltage

Resistance

Connector

Pin

No.

Nos.

 

 

 

Black-Red

11-13 VDC

5.5-6.2k ohms

F2

1-3

Yellow-Black

4-7 VDC

1-1.4 Mega ohms

F2

2-3

Table 14. By-pass Flow Control (By-pass Servo Model Only).

 

Wire Color

Voltage

Resistance

Connector

Pin

No.

Nos.

 

 

 

Brown-White

 

 

G1

1-5

Orange-White

2-6 VDC (unit

 

G1

2-5

 

in operating

15-35 ohms

 

 

Yellow-White

G1

3-5

mode)

 

Red-White -

 

G1

4-5

 

 

Ground

 

 

 

 

 

 

 

Table 15. (IG) Ignition System.

 

 

Wire Color

Voltage

Resistance

Connector

Pin

No.

Nos.

 

 

 

Grey-Grey

90-110 VAC

n/a

C1

1-2

 

Table 16. (FM) Combustion Fan Motor.

 

 

Wire Color

Voltage

Resistance

Connector

Pin

No.

Nos.

 

 

 

Red-Black

6-45 VDC

n/a

E1

1-2

White-Black

5-10 VDC

9.2-9.4k ohms

E1

2-4

Yellow-Black

11-13 VDC

3.5-3.9k ohms

E1

2-3

Set your meter to the hertz scale. Reading across the white and black wires at terminals 2 and 4 you should read between 60 and 420 hertz.

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Contents TG-150E-NX, TG-180E-NX, TG-199E-NX, TG237E-NX & TG-237E-NXA Table of Contents Page Page If YOU Smell GAS Model Section II SpecificationsDimensions TG-150E TG-180E TG-199E Section III Installation Instructions Water Heater Location UnpackingMount Water Heater on the Wall Remove CartonImportant In the State of Massachusetts 248CMR 4.00 State RegulationsInstallation Clearances Description Canadian Installations Inside Corner High Altitude Installations Water Quality Section IV Water ConnectionsInstructions for Connections Page Approximate TIME/TEMPERATURE Relationships in Scalds Recommended Piping for a Basic Installation Recommended Piping for a Circulation Systems Recommended Piping for Freeze Protection Recommended Piping for Power Failure Freeze ProtectionPressure Relief Valve Page Page Section V GAS Connections GAS Pressure Regulation GAS Meter Size Natural GAS onlyGas Specific CorrectionInitial Operation and Testing Installer only Section VI Electrical Connections CPU Page Wiring Diagram for TG-237E-NXand TG-237E-NXAModels Temperature Controls Page Installation of Controls Temperature Display Use IndicatorIllustration Showing Where to Connect Remote Control Harness Initial Operation and Testing of Controls Installer onlyWire Color Troubleshooting ElectricalResistance Connector Pin Nos Flame Rod Heat Exchanger and Outgoing Water Temperature ThermistorsAmp Fuses Frost ProtectionGeneral Instructions To Fill the Water Heater Section VII Operating InstructionsSequence of Operation Property damage, personal injury or loss of life Lighting Instructions For Your Safety Read Before OperatingWhat to do if YOU Smell GAS Operation InstructionsTurning OFF the Water Heater for AN Extended Period of Time Temperature AdjustmentTemperature Display Use Indicator Scalding Approximate TIME/TEMPERATURE Relationships in ScaldsFirst AID for Scalds Code Code Description Diagnostic Codes on the Temperature Control DisplayCode Burner Flame Appearance Section Viii MaintenancePage Water Heater Circulating PumpPage Section IX Parts List Description Quantity Page Description Quantity Page Description Quantity Page Description Quantity TG-237E Models TG-237E-N TG-237E-X TG-237E-NA TG-237E-XA Page Description Quantity Page Description Quantity Page Description Quantity Section X Warranty How do you get warranty assistance? What will we do to correct problems?What should you do to keep the warranty in effect? What will we not do?Page Page Page Fax/215-641-1670 Parts Fax/215-641-2180

TG-199E-N(X), TG237E-N(X), TG-180E-N(X), TG-150E-N(X), TG-237E-N(X)A specifications

Bradford White Corporation is renowned for its innovative solutions in the water heating and storage sector, offering a range of high-quality products designed for residential and commercial applications. Among its standout offerings are the TG series models, including TG-237E-N(X)A, TG-150E-N(X), TG-180E-N(X), TG-237E-N(X), and TG-199E-N(X). These models are specifically designed to maximize efficiency while providing reliable hot water delivery.

One key feature of the TG series is its high Energy Factor (EF) ratings, which signify exceptional energy efficiency. The models employ advanced technologies that not only reduce energy consumption but also minimize environmental impact. These products typically include a highly efficient burner system that enhances heat transfer, ensuring that users enjoy maximum hot water availability without incurring high utility costs.

Each model is crafted with robust materials, designed to withstand the rigors of everyday use. For example, the tanks are typically built from durable steel and feature an advanced glass lining that protects against corrosion and extends the lifespan of the unit. Additionally, these models are equipped with high-quality insulation that helps retain heat, further improving efficiency.

The TG series also emphasizes user convenience and safety. Many units come with a user-friendly control system that allows for easy temperature adjustments and monitoring. This is complemented by built-in safety features such as automatic shut-off capabilities, helping to prevent overheating or other potential hazards.

Another characterizing aspect of the TG series is its flexibility in installation. These water heaters are designed to fit various spaces and configurations, ensuring that they can meet the needs of different households or commercial facilities. Additionally, some models are compatible with both natural gas and propane, offering versatility in fuel options.

In terms of technology, these Bradford White water heaters include features such as electronic gas control systems that provide precise temperature management, and advanced airflow designs that optimize combustion efficiency. This focus on technology ensures that the TG series is not only reliable but also a smart choice for cost-conscious consumers looking to reduce their energy bills.

In summary, the Bradford White TG series, with models like TG-237E-N(X)A, TG-150E-N(X), TG-180E-N(X), TG-237E-N(X), and TG-199E-N(X), stands out for its robust design, efficiency, and advanced safety features. Whether for residential or commercial use, these hot water solutions continue to meet the evolving needs of consumers while prioritizing reliability and performance.
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