Bradford-White Corp atmospheric gas water heaters, MI75S*(BN, 55X80B*N Cast Iron Burner Adjustment

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SERVICE PROCEDURE AG-IV

Burner Operation Inspection, Adjustment

Cleaning and Replacement

R

MAIN BURNER: Inspection, Adjustment,

Cleaning and Replacement

At periodic intervals (not more then 6 months) a visual inspection should be made of the main burner for proper operation and to insure no debris accumulating.

Main burner should light smoothly from pilot and burn with a blue flame with a minimum of yellow tips.

Steel burner models have a self adjusting air mixture and do not have an adjustable air shutter. Cast iron burner can have the gas and air mixture properly proportioned by adjusting the air shutter on the mixer face of the main burner (see step 2 below).

Main burner must be free from any debris accumulation that may effect burner operation (see burner cleaning procedure in this manual).

CAST IRON BURNER ADJUSTMENT

WARNING

Inner door and burner components may be HOT when performing this operation. Take

necessary precaution to prevent personal injury.

Step 1. With main burner in operation slide the inner combustion chamber door open.

Step 2. To adjust for proper burning, loosen the air shutter nut, rotate the shutter to close the opening in the burner, then slowly rotate the shutter until the yellow tips are minimized. Tighten the air shutter nut. Too much air will cause the flame to lift off the burner ports and create noisy burner operation. Too little air may result in soot formation.

Air Shutter Nut

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Contents Service Manual Table of Contents Troubleshooting Chart Open Circuit Thermocouple Testing Thermocouple ReplacementPilot Assembly INSPECTION, Cleaning and Replacement Feedline Nut Pilot OrificeCombination Thermostat/Gas Valve Testing and Replacement Line PressureMagnet Assembly Testing White Rodgers Control Thermocouple TestingMagnet Assembly Testing Robertshaw Control ECO Energy Cut Off Testing Combination THERMOSTAT/GAS Valve ReplacementService Procedure AG-III Main Burner Inspection, Adjustment Cleaning and Replacement Cast Iron Burner AdjustmentBurner 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.

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