Bradford-White Corp 25X78B*N, MI75S*(BN, GX155S*BN, GX225S*BN, M1XR65T*(BN Service Procedure AG-III

Page 9

SERVICE PROCEDURE AG-III

Combination Thermostat/Gas Valve

Testing and Replacement

Step 7. Removal of combination thermostat/gas valve.

a)Disconnect main burner feedline (¾” wrench), pilot tube (7/16" wrench) and thermocouple (3/8" wrench) from combination thermostat/gas valve & remove burner from combustion chamber.

NOTE: Feed line nut for natural gas control uses right hand threads,

LP control uses left hand thread.

b) Remove Combination Thermostat/Gas Valve from heater,

rotating counter clockwise using a control body wrench or aWrench Boss length of ½" NPT pipe threaded into inlet of control.

To remove or install control, insert only ½" NPT threaded pipe into inlet and use to loosen or tighten control.

Step 8. Installation of Combination Thermostat/Gas Valve.

a)Install new combination thermostat/gas valve using a control body wrench or a length of ½" NPT pipe threaded into inlet of control. DO NOT OVER TIGHTEN. Use caution not to damage cast aluminum body of combination thermostat/gas valve. Be certain not to damage the bundled wire leads.

NOTE: Combination thermostat/gas Valve must be installed in proper upright position to assure the feedline will align properly at the inner door flange.

DO NOT OVER TIGHTEN. If control is turned past proper alignment, do not reverse direction to align.

b)Reattach main burner feedline, pilot tube and thermocouple to combination thermostat/gas valve.

NOTE: Feedline nut for natural gas control uses right hand threads,

LP control uses left hand thread.

c)Connect gas supply piping to inlet of control. Use back up wrench on wrench boss of control, never use back up wrench on body of control.

Step 9. Reconnect gas supply to Combination Thermostat/Gas Valve. Step 10. Resume water supply to water heater. Be sure tank is full of water. Step 11. Slide inner combustion chamber door closed

Step 12. Re-attach outer jacket door.

Step 13. To resume operation follow the instructions located on the lighting instruction label or the lighting instructions located in the installation and operation manual.

Page 9

9

Image 9
Contents Service Manual Table of Contents Troubleshooting Chart Thermocouple Replacement Open Circuit Thermocouple TestingFeedline Nut Pilot Orifice Pilot Assembly INSPECTION, Cleaning and ReplacementLine Pressure Combination Thermostat/Gas Valve Testing and ReplacementThermocouple Testing Magnet Assembly Testing White Rodgers ControlMagnet Assembly Testing Robertshaw Control Combination THERMOSTAT/GAS Valve Replacement ECO Energy Cut Off TestingService Procedure AG-III Cast Iron Burner Adjustment Main Burner Inspection, Adjustment Cleaning and ReplacementBurner Venturi Opening Feedline Burner Cleaning DIP Tube Inspection and Replacement Anode Inspection and Replacement Page Fax/215-641-1612

M1XR65T*(BN, MI75S*(BN, M2XR75S*(BN, GX155S*BN, 65T65*(BN specifications

Bradford-White Corp has long been recognized for its expertise in manufacturing water heating solutions that are durable, efficient, and built to last. Among their diverse range of products, the Bradford-White GX225S*BN, 75T80*(BN, MI100T*(BN, 55X80B*N, 25X78B*N stands out as an advanced and high-performing water heater that meets modern residential and commercial needs.

The GX225S*BN demonstrates exceptional functionality and reliability. This model offers a substantial capacity of 75 gallons, making it suitable for larger households or establishments that require a steady supply of hot water for multiple fixtures and appliances simultaneously. Equipped with advanced insulation technology, it efficiently retains heat, leading to lower energy consumption and reduced utility costs.

One notable feature of the GX225S*BN is its intuitive user interface, which simplifies temperature control and monitoring. Users can easily adjust the temperature settings to meet their comfort levels while ensuring safe operation. Safety is a top priority; thus, the water heater includes a comprehensive safety system that prevents overheating and includes a temperature and pressure relief valve, ensuring peace of mind for users.

The innovative design of the water heater utilizes high-quality, durable materials resistant to corrosion, which enhances its lifecycle and reduces maintenance requirements. The heater also integrates advanced venting technologies to optimize performance and facilitate installation, allowing flexibility in positioning.

Bradford-White’s commitment to craftsmanship is evident in the GX225S*BN’s construction and performance. This model features an efficient burner system that maximizes energy output while minimizing emissions, contributing positively to environmental efforts. Additionally, the unit operates quietly, ensuring that it does not disrupt the household or business environment.

The GX225S*BN also meets compliance with energy efficiency regulations, which is crucial both for environmentally conscious consumers and for those looking to save on energy bills. With industry-leading warranties and support from Bradford-White Corp, users can rest assured that they are investing in a reliable product that stands the test of time.

In conclusion, the Bradford-White GX225S*BN, 75T80*(BN, MI100T*(BN, 55X80B*N, 25X78B*N is designed to meet the demands of modern hot water needs while providing exceptional efficiency, safety, and durability. It represents a significant investment for those seeking a robust water heating solution that prioritizes user satisfaction and energy conservation.