Bradford-White MI60T User Manual

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SERVICE PROCEDURE RG-VII

Resetting Thermal Switch

Testing and Replacement

RESETTABLE THERMAL SWITCH REPLACEMENT

Step 1. Rotate knob of combination thermostat gas valve to the off position.

For White Rodgers Control, depress knob slightly and rotate clockwise to the “OFF” position.

For Robertshaw Control, rotate knob clockwise to the “OFF” position.

Step 2. Remove outer jacket door.

Step 3. Disconnect wire leads from resettable thermal switch.

Step 4. Remove resettable thermal switch from inner door (Phillips screw driver)

Step 5. Place new resettable thermal switch in place. Be sure contact surface of resettable thermal switch and inner door are free of any debris. Secure resettable thermal switch into place 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 with either resettable thermal switch connection.

Step 7. Replace outer jacket door

Step 8. To resume operation follow the instructions located on the lighting instruction label or the lighting instruction located in the installation and operation manual.

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SERVICE PROCEDURE RG-VIII

ScreenLok® Flame Arrestor Cleaning

ScreenLok® Flame Arrestor Cleaning

Step 1. Rotate knob of combination thermostat gas valve to the off position.

For White Rodgers Control, depress knob slightly and rotate clockwise to the “OFF” position.

For Robertshaw Control, rotate knob clockwise to the “OFF” position.

Step 2. Remove outer jacket door.

Step 3. Remove inner door per SERVICE PROCEDURE RG-I,step 3a through 3e.

Step 4. Disconnect main burner feed line (¾ wrench), pilot tube (7/16 wrench) and thermocouple (3/8) wrench from combination thermostat gas valve and remove burner assembly from combustion chamber.

NOTE: Feedline nut for natural gas control uses right hand threads, LP control uses left hand thread.

Feedline

Nut

Step 5. Clean ScreenLok® Flame Arrestor using stiff brush, compressed air and/or shop vacuum to remove any scale or other debris accumulation. Using 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-Vand reinstall burner assembly into combustion chamber.

Step 7. Reconnect feedline, thermocouple and pilot tube to the combination thermostat/gas valve. Step 8 Reinstall inner door per SERVICE PROCEDURE RG-I,steps 4 through 13.

Step 9. To resume operation follow the instructions located on the lighting instruction label or the lighting instruction located in the installation and operation manual.

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SERVICE PROCEDURE RG-IX

Dip Tube and Anode

Inspection and Replacement

DIP TUBE INSPECTION AND REPLACEMENT

WARNING

Heater components and stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury.

Step 1. Rotate knob of combination thermostat/gas valve to “OFF” position.

For White Rodgers Control, depress knob slightly and rotate clockwise to the “OFF” position.

For Robertshaw Control, rotate knob clockwise to the “OFF” position.

Step 2. Turn off cold water supply to heater. Connect hose to drain spigot of water heater and route to an open drain. Open a nearby hot water faucet to vent heater for draining. Open drain spigot of hot water heater and allow heater to drain to a point below the inlet connection nipple.

Step 3. Disconnect inlet nipple from plumbing system.

Step 4 With an appropriate wrench, remove inlet nipple/dip tube from the water heater. Use caution not to damage pipe threads.

Step 5. Visually Inspect inlet nipple/dip tube. Inlet nipple/dip tube should be free of cracks and any blockage. Hydro-jetslocated near the bottom of the dip tube should be open and free of any blockage.Anti-siphonhole located approximately 6" from the 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 replaced.

Step 6. Upon completion of inspection or subsequent replacement, reinstall inlet nipple/dip tube into heater. Connect nipple to plumbing system, resume water supply and refill heater with water.

Step 7. To resume operation follow the instructions located on the lighting instruction label or the lighting instructions located in the installation and operation manual.

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SERVICE PROCEDURE RG-IX

Dip Tube and Anode

Inspection and Replacement

ANODE INSPECTION AND REPLACEMENT

WARNING

Heater components and stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury.

Step 1. Turn off water supply to water heater. Rotate knob of combination thermostat/gas valve to “OFF” position.

For White Rodgers Control, depress knob slightly and rotate clockwise to the “OFF” position.

For Robertshaw Control, rotate knob clockwise to the “OFF” position.

Step 2. Turn off cold water supply to heater. Connect hose to drain spigot of water heater and route to an open drain. Open a nearby hot water faucet to vent heater for draining. Open drain spigot of hot water heater and allow heater to drain to a point below the outlet connection nipple.

Step 3. Disconnect outlet nipple from plumbing system.

Step 4 With an appropriate wrench, remove outlet nipple/anode from the water heater. Use caution not to damage pipe threads.

Step 5. Visually Inspect outlet nipple/anode. Outlet nipple/anode should show signs of depletion, this is normal.

If depletion is ½ of the original anode diameter (approximately ¾” 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 replacement, reinstall outlet nipple/anode into heater. Connect nipple to plumbing system, resume water supply and refill heater with water.

Step 7. To resume operation, follow the instructions located on the lighting instruction label or the lighting instructions located in the installation and operation manual.

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PARTS LIST

1

Draft Hood

20

Pilot Assembly

2

Hot Water Outlet/Anode

21

Pilot Orifice

3

Cold Water Inlet Tube

22

Thermocouple

4

Flue Baffle

23

Feed Line

5

T&P Relief Valve

24

Complete Cast Iron Burner Assembly

6

Thermostat

25

Cast Iron Burner Only

7

Piezo Igniter

26

Main Burner Orifice

8

Brass Drain Valve

27

Pilot Assembly

9

Screw-#8-18x 3/4 Hex Washer Head

28

Pilot Orifice

10

Screw-#10-12x 3/4 Hex Washer Head

29

Air Shutter

11

Left Side Inner Door with Gasket

30

Air Shutter Nut

12

Complete Right Side Inner Door

31

Thermocouple

14

Resettable Thermal Switch

32

Feed Line

15

Screw #6-20x 3/8 PHCR

33

ASSE Approved Mixing Valve (Optional)

16

Outer Door

34

¾ NPT Tank Plug (XR models)

17

Complete BN Burner Assembly

35

Inner Door Gasket Kit

18

BN Burner Only

36

Wire Tie

19

Main Burner Orifice

 

 

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NOTES

NOTES

Application & Sizing/800-523-2931

Fax/215-641-1612

Email parts@bradfordwhite.com techserv@bradfordwhite.com

www.bradfordwhite.com

www.bradfordwhitecanada.com