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The Bradford White

Flammable Vapor Ignition Resistant Water Heater

SERVICE

MANUAL

Troubleshooting Guide

and Instruction for Service

(To be performed ONLY by qualified service providers)

MI30T*F(BN,CX)
MI30S*F(BN, CX)
MI303T*F(BN,CX)
MI40T*F(BN,CX)
MI403S*F(BN,CX)
MI404T*F(BN,CX)
MI503*F(BN,CX)
MI50L*F(BN,CX)
MI504S*F(BN,CX)
MI60T*F(BN,CX)

M430T*F(BN,CX)
M440T*F(BN, CX)
M4403S*F(BN,CX)
M4403T*F(BN,CX)
M450S*F(BN,CX)
M4503*F(BN,CX)
M460T*F(BN,CX)
M1XR403S*F(BN,CX)
M1XR504T*F(BN,CX)
M2XR504T*F(BN,CX)
M2C504T*F(BN,CX)
50T65F(BN,CX)

(*) Denotes Warranty Years.

For the Bradford White

Defender Safety System

®

Models:

Manual 44943C

Save this manual for future reference

Содержание 50T65F

Страница 1: ...F BN CX MI40T F BN CX MI403S F BN CX MI404T F BN CX MI503 F BN CX MI50L F BN CX MI504S F BN CX MI60T F BN CX M430T F BN CX M440T F BN CX M4403S F BN CX M4403T F BN CX M450S F BN CX M4503 F BN CX M460...

Страница 2: ...0 RG III Piezo Igniter and Electrode Testing 11 RG IV Combination Thermostat Gas Valve Testing and Replacement 12 RG V Burner Operation Inspection Adjustment Cleaning and Replacement 17 RG VI Resettab...

Страница 3: ...es in the very bottom of the corrosion resistant combustion chamber The air then travels up through the oriented flame arrestor plate louvers where the velocity of the air is increased and its directi...

Страница 4: ...k connection at combination thermostat gas valve Proper tightness should be finger tight plus turn 2 Inspect thermocouple to ensure that it is fully engaged into pilot bracket 3 Adjust tip of thermoco...

Страница 5: ...gasket is not effected by any of the above gasket replacement is not required If replacement is required proceed to Inner Door Gasket Replacement Procedure Inner Door Gasket Replacement Procedure WAR...

Страница 6: ...bustion chamber surface before installing the inner door gasket assembly Step 8 Place the left side inner door into position first Firmly position the radiused channel of the inner door aroundthe feed...

Страница 7: ...sides of the inner door are properly positioned and sealed against the combustion chamber Step 12 Reconnect lead wires from combination thermostat gas valve to resettable thermal switch See photo in s...

Страница 8: ...tor clip to copper sheath of thermocouple Step 1 Disconnect thermocouple from combination thermostat gas valve Step 2 Connect a thermocouple adaptor BWC P N 239 44642 00 Robertshaw P N 75036 at the th...

Страница 9: ...nner door per SERVICE PROCEDURE RG I Step 10 through Step 13 Step 8 To resume operation follow the instructions located on the lighting instruction label or the lighting instructions located in the in...

Страница 10: ...t etc b Kinks or cracks in the pilot tube If found the pilot must be replaced Step 9 Inspect pilot orifice a Remove nut from bottom of pilot assembly b Remove pilot tube and pilot orifice c inspect pi...

Страница 11: ...ulation or using an insulated tool next to an unpainted surface such as the feedline or gas valve and depress the Piezo igniter If there is a spark the igniter is OK the pilot is not functioning and m...

Страница 12: ...peration If pressure is out of the specification noted in step 5 proceed to step 7 or 8 for proper service procedure Step 7 For White Rodgers control the manifold pressure is not adjustable If manifol...

Страница 13: ...is out of specification and the combination thermostat gas valve should be replaced MAGNET ASSEMBLY TESTING Robertshaw Control Step 1 Disconnect thermocouple from combination thermostat gas valve Ste...

Страница 14: ...mal Switch Wire Connection Hex Drive Screws shown on Right Side Inner Door Hex Drive Screws at Flange section of Inner Door Remove Wire Tie For White Rodgers Control depress knob slightly and rotate c...

Страница 15: ...control is turned past proper alignment do not reverse direction to align b Reattach Piezo bracket with Piezo igniter to combination thermostat gas valve c Reattach main burner feedline pilot tube and...

Страница 16: ...er are aligned with the right side inner door slotted openings Verify seal integrity around combustion opening Secure right side inner door using 1 4 hex drive screws from step 6b DO NOT OVER TIGHTEN...

Страница 17: ...e 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...

Страница 18: ...BURNER Inspection Adjustment Cleaning and Replacement cont Position thermocouple pilot tube and Piezo wire BURNER CLEANING Steel Cast Iron Step 1 Remove inner door assembly per SERVICE PROCEDURE RG I...

Страница 19: ...combustion chamber area of heater prior to reinstallation of burner assembly If cleaning is required refer to SERVICE PROCEDURE RG VIII Step 10 Reinstall burner assembly into combustion chamber recon...

Страница 20: ...ng condition must be determined prior to putting the heater back in service RESETTABLE THERMAL SWITCH CONTINUITY TESTING PROBABLE CAUSE FOR RESETTABLE THERMAL SWITCH ACTIVATION PROBABLE CAUSE CORRECTI...

Страница 21: ...ce using screws from step 4 DO NOT OVER TIGHTEN SCREWS Step 6 Reconnect wire leads from combination thermostat gas valve to resettable thermal switch Note Wire termination are interchangeable witheith...

Страница 22: ...a soft brush clear jacket openings of any dirt dust restrictions or other obstructions Step 6 Remove any debris from burner assembly per SERVICE PROCEDURE RG V and reinstall burner assembly into combu...

Страница 23: ...e bottom of nipple should be free of any blockage Any damage such as cracks restriction due to deformation or unintentional holes are not field repairable and the inlet nipple dip tube must be replace...

Страница 24: ...node diameter approximately diameter replacement is recommended If any of thesteel core of the anode is exposed replacement is recommended Step 6 Upon completion of inspection or subsequent replacemen...

Страница 25: ...ettable Thermal Switch 15 Screw 6 20 x 3 8 PHCR 16 Outer Door 17 Complete BN Burner Assembly 18 BN Burner Only 19 Main Burner Orifice 20 Pilot Assembly 21 Pilot Orifice 22 Thermocouple 23 Feed Line 24...

Страница 26: ...NOTES...

Страница 27: ...NOTES...

Страница 28: ...Application Sizing 800 523 2931 Fax 215 641 1612 Email parts bradfordwhite com techserv bradfordwhite com www bradfordwhite com www bradfordwhitecanada com...

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