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light duty commercial electric water heater installation & operating

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1. 8 Check across lower element terminals BLACK see illustration 50 A Rated voltage NOT present check lower element wire RED connections to thermostat HWE B Rated voltage IS present Vm Repeat EU element testing 2 BLUE YELLOW C WARNING pm Be sure thermostats are reset to their original temperature settings Illustration 49 Illustration 50 as found prior to thermostat testing BRADFORD WHITE CO R PO R ATION 31 SERVICE PROCEDURE Light Duty Commercial Thermostat Testing J Double Element Simultaneous Three Phase Operation continued WARNING High voltage exposure Use caution to avoid personal injury during this procedure Water Temperature In Tank Is Above Thermostat Setting 1 This procedure assumes line voltage ECO and elements are in working order Adjust upper and lower thermostat to the lowest setting Turn power ON to water heater Set multi meter to Volts AC a O N Check across terminals L4 and T2 of upper thermostat see illustration 51 A Rated voltage IS present replace upper thermostat B Rated voltage NOT pres
2. When the lower thermostat is satisfied it opens at terminal 2 interrupting current flow through lower element The system is now in stand by mode waiting for the next call for heat e The lower thermostat element combination will generally 2 cycle on and off more often 12 TS T then the upper In some cases 5 i i RED 208 240 480 such as a cold tank or in high BLACK REDA 120 277 BLACK RED 208 240 480 BLACK m RED 208 240 480 demand periods the upper Lo I WHITE 120 277 LTE WHITE 120 277 thermostat will call for heat Iob 1 o5 opening at terminal Thermostat closed 5i Ica Thermostat closed Y 4 closing at at terminal T4 bi at terminal T2 5 terminal 2 prior to the lower ii Dm BLUE Ter BLUE et BLUE thermostat being satisfied This Yvzuow YELLOW will interrupt current flow through the lower thermostat BUAGK BLACK BLACK and element and allow current to flow through the upper element only When the upper thermostat is satisfied it resumes operation as described in sequence 3 above Upper Upper Element RED Element RED Thermostat open Thermostat closed between terminals between terminals land 2 1 and 2 2 Lower T stat BLACK BRADFORD WHITE CO R P
3. Element 208V 240V 380V 415V 480V Wattage 1500 1500 12 5 7 2 10 8 6 3 6 8 4 0 6 3 3 6 5 4 3 1 2000 2000 16 6 9 6 14 4 8 3 9 1 5 3 8 3 4 8 7 2 4 2 2500 2500 20 8 12 0 18 0 10 4 11 4 6 6 10 4 6 0 9 0 5 2 3000 3000 25 0 14 4 21 6 12 5 13 7 7 9 12 5 7 2 10 8 6 3 3500 3500 29 1 16 8 25 2 14 6 15 9 9 2 14 6 8 4 12 6 7 3 4000 4000 33 3 19 2 28 8 16 7 18 2 10 5 16 7 9 6 14 4 8 3 4500 4500 37 4 21 6 32 4 18 8 20 5 11 8 18 8 10 8 16 2 9 4 5000 5000 41 6 24 0 36 0 20 8 22 8 13 2 20 8 12 0 18 0 10 4 5500 5500 39 6 22 9 25 0 14 5 22 9 13 3 19 9 11 5 6000 6000 N A N A 27 3 15 8 25 0 14 5 21 7 12 5 GENERAL OPERATION Before closing the switch to allow electric current to flow to the water heater make certain that the water heater is full of water and that the cold water inlet valve is open Complete failure of the heating element s will result if they are not totally immersed in water at all times Failure of the element s due to dry firing is not covered by warranty When the switch is closed the operation of this electric water heater is automatic The thermostats are preset to the HOT setting to provide a water temperature of approximately 140 F 60 C or below to reduce the risk of scald injury A CAUTION Scalding may occur within five b seconds at a temperature setting of 140 F 60 C Care must be taken whenever using hot water to avoid scalding injury Certain appliances require high temperature hot
4. closed at terminal 2 calling for heat L3 ECO This completes the circuit through the MESES at terminal T2 thermostats and allows current to flow 112 T2 through the elements C ah BLACK BLACK 3 When either thermostat is satisfied it will open at terminal T2 interrupting current flow through the corresponding element As both thermostats satisfy the system will be stand by mode waiting for the next call for heat Thermostats will operate independent of the other Thermostat open L4 at terminal T2 alo T2 BLACK RE e S BRADFORD WHITE C O R P O R A T LO N 10 SEQUENCE OF OPERATION J Some electric utility companies will offer discounts for using electricity during Off Peak Times of the day The system allows the use of an Off Peak meter which interrupts power to the lower element during high power demand periods Sequence of Operation Double Element Non Simultaneous Operation Single Phase Off Peak 1 BRADFORD WHITE CO R PO R ATION Line voltage is applied across terminals L1 amp L3 ofthe upper thermostat Line voltage from off peak meter is supplied to terminal L1 of lower thermostat ECO in the upper thermostat is closed so there is voltage at terminal L4 of upper thermostat and to one side of the upper element
5. 1112156 BLACK WHITE Y Illustration 30 l BLACK WHITE LJ Illustration 31 25 SERVICE PROCEDURE REV Light Duty Commercial Thermostat Testing P Double Element Non Simultaneous Single Phase Operation continued WARNING High voltage exposure Use caution to avoid personal injury during this procedure Tank D Not Deli E gh Hot Water fcon nusdk 1112136 m 7 Check voltage across terminal L3 of upper BLACK WHITE BLACK WHITE thermostat amp T2 of lower Thermostat 2 see illustration 32 A Rated voltage NOT present Replace lower thermostat B Rated voltage is present okay go to step 8 8 Check voltage across lower element see illustration 33 A Rated voltage NOT present Check wire connections between thermostats amp element 1 L3 RED B Rated voltage IS present Repeat element testing see page 15 A WARNING Be sure thermostats are reset to their original temperature settings Hlustration 32 Hlustration 33 as fo
6. 5 Check across terminals L4 and 2 of lower thermostat see illustration 12 A Rated voltage IS present replace lower thermostat Illustration 12 B Rated voltage NOT present lower thermostat is okay C Lower than rated voltage IS present recheck for grounded lower element see page 15 S BRADFORD WHITE CORPORATION 18 N SERVICE PROCEDURE RE III Residential Thermostat Testing Pi WARNING Double Element Non Simultaneous Three Phase Operation Water In Tank Is Cold With Power ON High voltage exposure Use caution to avoid personal injury during this procedure 1 This procedure assumes line voltage ECO and js d is elements in working order 2 Turn power ON to water heater ne re is 3 Set multi meter to Volts AC 14 4 Check across terminals L4 and T2 of o BLUE upper thermostat see illustration 13 C 12 4 YELLOW A Rated voltage NOT present Recheck ECO If ECO is okay replace thermostat RED YELLOW BLACK Q B Rated voltage IS present proceed to next step 4 5 Check across element terminals see illustration 14 519 A Rated voltage NOT present BLACK check wire connections from thermostat to element
7. Residential and Light Duty Commercial Electric Water Heaters Table of Contents Page Service Procedure RETE 2 Tools 2 General Information n 3 Sequence of Operation memes 6 Single Element Operation 6 Double Element Non Simultaneous Single Phase Pe 7 Double Element Simultaneous Single Phase 4 wire Service 8 Double Element Non Simultaneous 3 Phase 9 Double Element Simultaneous 3 NM 10 Double Element Non Simultaneous Single Phase Off Peak 11 Titoubleshoott p ce ter nea beu 12 Line Voltage and High Limit ECO Testing sss 14 RE I Heating Element Testing isses 15 RE II Residential Thermostat Testing sss 16 Single Element 16 Double Element 4 wire Simultaneous Single Phase 16 Double Element Non Simultaneous Single Phase 17 Double Element Non Simultaneous 3 PASC iss oro reti reed 19 Double Element Simultaneous 3 Phase iets cae out NODI 21 Double Element Non Simultaneous Single Phase Off Peak 23 Light Duty Commercial Thermostat Testing sess 25 REIV Double Element Non Simultaneous Single Phase 25 Double Element Simultaneou
8. Thermostat closed at terminal T2 Thermostat closed at terminal T2 BLACK 2 Li OffPeak Thermostat closed atterminal T2 BLUE BLACK BLACK RED 11 TROUBLESHOOTING Most common cause for improper electric water heater operation can be linked to heating element failure When troubleshooting an electric water heater with the incidence of No Hot Water or Insufficient Amount of Hot Water Its always a good idea to check the heating elements first following the procedure on page 15 Common Heating Element Failures Are 1 Dry Firing Element may be partially submerged in water or most likely completely exposed with no water in tank In some cases sediment or lime build up around an element can eventually cause an air pocket and within seconds result in a dry fired element At this point the element becomes inoperative When element replacement is required be sure tank is full of water prior to energizing the water heater 2 Grounded Element An element with a short circuit to ground will in most cases cause the circuit breaker in the service panel to open or shut off In some cases there may be enough current draw for the circuit breaker to open This will allow the heating element to be in continuous operation resulting in over heated water limited only by the
9. THERMOSTAT MUST BE OPEN DURING AND HEATING ELEMENT WATER HEATER OPERATION COLD WATER SUPPLY DRAIN PAN PIPED TO SUITABLE DRAIN AS ILLUSTRATED Figure 2 Electrical Connections Before any electrical connections are made be sure that the water heater is full of water and that the manual shut off valve in the cold water supply line is open Check the rating plate and wiring diagram before proceeding This electric water heater was built and wired in accordance with the Underwriters Laboratories testing approvals requirements The temperature limiting device is of the manual reset trip free type and has been factory installed to interrupt all ungrounded power supply conductors in the event of thermostat failure Thermostats are factory set and wired in accordance with the wiring diagram fastened to the inside of the top access panel The plumbing supplier in your area ordered this heater wired at the factory to comply with existing area codes but local utility codes may require or allow other circuitry The thermostats are factory set and wired in accordance with the wiring diagram affixed to the water heater next to the thermostat element access cover Consult your local power company to determine the correct electrical hook up in order to meet local utility and building codes and in order to obtain the most economical rates Also check to find out if you are required to obtain a permit before starting the installation The water
10. B Rated voltage IS present Illustration 13 Illustration 14 Repeat element testing see page 15 Tank Does Not Deliver Enough Hot Water 1 This procedure assumes line voltage ECO and iri elements are in working order 2 Turn power ON to water heater and multi meter to Volts 3 Adjust temperature setting of upper thermostat to the highest setting BLUE Water temperature in tank must be below thermostat setting for this test YELLOW 4 See illustration 13 above check voltage across terminals L4 amp T2 of upper thermostat A Rated voltage IS present okay upper thermostat is calling for heat Go to step 5 below 1 B Rated voltage NOT present replace upper thermostat lo 5 Adjust temperature setting of upper thermostat to the minimum setting Water temperature tank must be above thermostat setting for this test 12 6 Check voltage across terminals 4 of upper thermostat amp L3 of lower thermostat BLACK see illustration 15 A Rated voltage NOT present replace upper thermostat B Rated voltage IS present upper thermostat is okay Go to step 7 on next Illustration 15 page BRADFORD WHITE CO R PO R ATION 19 N SERVICE PROCEDURE RE III Residential Thermostat Testing J Double Element Non
11. YELLOW YELLOW 3 Set multi meter to Volts BLACK BLACK 4 Check across terminals L4 and T2 of upper thermostat see illustration 18 A Rated voltage NOT present Recheck ECO see page 14 If ECO is okay replace Ho thermostat 39 Rated voltage IS present BLACK RED BLACK RED proceed to next step UL 5 Check across upper element terminals see illustration 19 Illustration 18 Illustration 19 A Rated voltage NOT present check wire connections from thermostat to element B Rated voltage IS present Repeat element testing see page 15 6 Check across terminals L1 amp L3 of lower thermostat see illustration 20 A Rated voltage NOT present check wire connections from upper to lower thermostats B Rated voltage IS present okay go to step 7 7 Check across terminals L4 and T2 of lower thermostat see illustration 21 A Rated voltage NOT present Recheck ECO see page 14 If ECO is okay replace thermostat BLACK RED BLACK B Rated voltage IS present _ L proceed to next step J 8 Check across lower element terminals Illustration 20
12. for single phase units Example 4500W 240V 18 75A Volts Amps Watts balanced 3 phase units Example 4500W 240V x 1 732 10 82A Volts x 1 732 Watts Amps x Volts Example 18 75A x 240V 4500W Ohms Volts Example 240V 4500W 12 8 Ohms Watts Common Service Wire Configurations WHITE BLACK Grounded GREEN BLACK RED GREEN Ungrounded Neutral Grounding Ungrounded Ungrounded Grounding 120 0 240 120 120 120 208 3P 240 3P 480 3Ph 277 1 Ph Neutral A B C Neutral B C Neutral A B C RED BLACK RED RED BLACK RED RED BLACK RED BRADFORD WHITE CO R PO R ATION 3 GENERAL INFORMATION Wattage Limitations at Various Voltages Residential Electric Upright M1 amp M2 Series Non Simultaneous operation Residential High Efficiency Upright M2HE Series Non Simultaneous operation Residential Electric Lowboy M1 amp M2 Series Non Simultaneous Operation Dairy Barn Deluxe DB Series Non Simultaneous Operation Maximum Element Voltage Wattage Upper Lower 3 000 3 000 3 000 120 6 000 6 000 6 000 208 240 6 000 6 000 6 000 277 480 Residential Electric Upright M1 amp M2 Series Simultaneous Operation Residential High Efficiency Upright M2HE Series Simultaneous Operation Residential Electric Lowboy M1 amp M2 Series Simultaneous Operation Light Duty Commercial Electric LD Series Non Simultaneous Operation Light Duty Commercial Electric LD Series Simultaneous Operation Dairy Barn De
13. A 24 0 20 8 18 8 13 2 12 0 10 4 5500 5500 N A N A 22 9 19 9 14 5 13 3 11 5 6000 6000 N A N A N A 21 7 15 8 14 5 12 5 Electrical Connections continued SINGLE PHASE FULL LOAD CURRENT DRAW SIMULTANEOUS OPERATION Element 120V 208V 240V 277V 380V 415V 480V Wattage 1500 1500 25 0 14 4 12 6 10 8 7 8 7 2 62 2000 2000 33 4 19 2 16 6 14 4 10 6 9 6 84 2500 2500 41 6 24 20 8 18 0 13 2 12 0 10 4 3000 3000 N A 28 8 25 0 21 6 15 8 14 4 126 3500 3500 N A 33 6 29 2 25 2 18 4 16 8 146 4000 4000 N A 38 4 33 4 28 8 21 0 19 2 16 6 4500 4500 N A 43 2 37 6 32 4 23 6 21 6 18 8 5000 5000 N A 48 0 41 6 37 6 26 4 24 0 208 5500 5500 N A N A 45 8 39 8 29 0 26 6 230 6000 6000 N A N A N A 43 4 31 6 29 0 25 0 THREE PHASE UNBALANCED DELTA FULL LOAD CURRENT DRAW NON SIMULTANEOUS OPERATION TERMINALS L1 L2 amp L3 Element 208V 240V 380V 415V 480V Wattage 1500 1500 7 2 6 3 3 9 3 6 3 1 2000 2000 9 6 8 3 5 3 4 8 4 2 2500 2500 12 0 10 4 6 6 6 0 5 2 3000 3000 14 4 12 5 7 9 7 2 6 3 3500 3500 16 8 14 6 9 2 8 4 7 3 4000 4000 19 2 16 7 10 5 9 6 8 3 4500 4500 21 6 18 8 11 8 10 8 9 4 5000 5000 24 0 20 8 13 2 12 0 10 4 5500 5500 N A 22 9 14 5 13 3 11 5 6000 6000 N A N A 15 8 14 5 12 5 THREE PHASE UNBALANCED DELTA FULL LOAD CURRENT DRAW SIMULTANEOUS OPERATION TERMINAL L3 TERMINALS L1 amp L2
14. ECO or Energy Cut Off located in the thermostat Repeated actuation of the ECO reset button on the thermostat usually is the result of a grounded element 3 Sediment build up Slow hot water recovery can usually be traced back to sediment or lime build up around heating element Sediment build up can also over time cause a dry fired element Illustration 1 below shows a common Screw In type heating element identifying certain features commonly referred to throughout this manual 1 7 Hex Screw in Flange Terminal Block Zinc Plated Copper or Incoloy Sheath I N 2 Terminal Block Element Rating Ink Stamped Screw on side of Terminal Block 0642 4500W 240V RC02404524 ey Illustration 1 Typical Direct Immersion Screw In Type Heating Element S BRADFORD WHITE C O R P O R A T LO N 12 TROUBLESHOOTING Quick Step Plan to Hot Water 1 TURN OFF power to water heater and check all wire connections to insure they are tight and corrosion free 2 Turn power ON and determine that service voltage is present and the high limit ECO has not actuated see procedure on page 14 A WARNING High voltage exposure Use caution when making voltage checks to avoid personal injury 3 Check for inoperative heating element see procedure on page 15 4 Check for proper thermostat operation see procedures beginning on page 16 NOTE Thermosta
15. HEATER Thermostat Adjustment A CAUTION Before adjusting thermostat s turn off power supply to the water heater The temperature of the water can be changed by adjusting the thermostat s Before any work is done on the water heater disconnect all power to the water heater by opening the switch at the main electrical circuit breaker or fuse box Remove the access panels or front panel on table tops fold the insulation outward away from the controls Set the thermostat s to the desired water temperature using a screwdriver to move the thermostat dial The thermostat has been factory preset to approximately 140 F 60 lt or below Rotate the temperature dial clockwise to increase water temperature Replace the insulation making sure that the controls are well covered and that the plastic terminal shield has not been displaced replace the access panel The water heater is now ready for operation and the main switch can be closed TEMPERATURE SETTING APPROXIMATELY 120 F 49 C Figure 5 A DANGER Hotter water increases the risk of scald injury Scalding may occur within five 5 seconds at a temperature setting of 140 F 60 C To protect against hot water injury install an ASSE approved mixing valve in the water system This valve will reduce point of discharge water temperatures by mixing cold and hot water in branch water lines A licensed plumbing professional or local plumbing authority should be cons
16. Illustration 21 A Rated voltage NOT present check wire connections from WARNING thermostat to element M Be sure thermostats are reset to their original B Rated voltage IS present Repeat element testing temperature settings as found prior to see page 15 thermostat testing BRADFORD WHITE CO R PO R ATION 21 22 S SERVICE PROCEDURE RE III Residential Thermostat Testing J Double Element Simultaneous Three Phase Operation continued Water Temperature In Tank Is Above Thermostat Setting 1 This procedure assumes Line voltage ECO and elements are in working order Adjust upper and lower thermostat to the lowest setting Turn power ON to water heater Set multi meter to Volts AC a Q N Check across terminals L4 and T2 of upper thermostat see illustration 22 A Rated voltage IS present replace upper thermostat B Rated voltage NOT present upper thermostat is okay Go to step 6 below C Lower than rated voltage IS present recheck for grounded upper element see page 15 6 Check across terminals L4 and T2 of lower thermostat see illustration 23 A Rated voltage IS present replace lower thermostat B Rated voltage NOT present lower thermostat is okay C Lower than rated voltage IS present recheck for grounded lower element see page 15 WARNING High voltage exposure Use caution to avoid personal injur
17. Standard CAN1 4 4 Temperature Pressure Temperature and Pressure Relief Valves and Vacuum Relief Valves The combination temperature and pressure relief valve shall be marked with a maximum set pressure not to exceed the maximum working pressure of the water heater The combination temperature and pressure relief valve shall also have an hourly rated temperature steam BTU discharge capacity not less than the hourly input rating of the water heater Install the combination temperature and pressure relief valve into the opening provided and marked for this purpose on the water heater Note Some models may already be equipped or supplied with a combination temperature and pressure relief valve Verify that the combination temperature and pressure relief valve complies with local codes If the combination temperature and pressure relief valve does not comply with local codes replace it with one that does Follow the installation instructions above on this page Install a discharge line so that water discharged from the combination temperature and pressure relief valve will exit within six 6 inches 15 3 cm above or any distance below the structural floor and cannot contact any live electrical part The discharge line is to be installed to allow for complete drainage of both the temperature and pressure relief valve and the discharge line The discharge opening must not be subjected to blockage or freezing DO NOT thread plug or cap the disc
18. Tank is cold therefore both thermostats are closed at terminal T2 calling for heat The circuit is complete through the upper thermostat only allowing current to flow through upper element When upper thermostat is satisfied it opens at terminal T2 interrupting current flow through upper element and closes at terminal T4 allowing voltage to pass to one side of the lower element This completes the circuit through the lower thermostat and off peak meter allowing current flow through lower element When the lower thermostat is satisfied it opens at terminal T2 interrupting current flow through lower element The system is now in stand by mode waiting for the next call for heat During peak power demand periods as determined by the local utility the off peak meter will interrupt power to terminal L1 of lower thermostat Only the top thermostat element combination is allowed to operate during this period From Off Peak Meter RED Thermostat closed atterminal T4 Thermostat closed atterminal T2 s From Off Peak Meter i2 Lf 1 L2 YELLOW L1 L3 RED ECO Closed L4 YELLOW 12 4 BLUE BLACK BLACK Power interrupted BLACK Thermostat open L4 at terminal 2 BN J RED
19. consists of two single element configurations operating independently S BRADFORD WHITE C O R P O R A T LO N S SERVICE PROCEDURE RE III Residential Thermostat Testing J Double Element Non Simultaneous Single Phase Operation WARNING High voltage exposure Use caution to avoid personal injury during this procedure Water In Tank Is Cold With Power ON Ll L2 1 This procedure assumes line voltage ECO and elements in working order BLACK RED 208 240 480 WHITE 120 277 2 Turn power ON to water heater L1 g 3 Set multi meter to Volts AC S 4 Check across terminals L4 and T2 of 12 upper thermostat see illustration 8 YELLOW A Rated voltage NOT present Recheck ECO If ECO is okay replace thermostat BLACK B Rated voltage IS present proceed to next step No 5 Check across element terminals 42 see illustration 9 A Rated voltage NOT present check wire connections from L thermostat to element B Rated voltage IS present Illustration 8 Repeat element testing see page 15 Tank Does Not Deliver Enough Hot Water 1 This procedure assumes line voltage ECO and elements are in working order 2 Turn power ON to water heater and set multi meter to Volts 3 Adjust temperature setting of upper thermostat to the highest setting Water t
20. of being scalded eD Review this instruction manual before setting temperature HOT at water heater Feel water before bathing or showering Temperature limiting valves are available APPROXIMATE TIME TEMPERATURE RELATIONSHIPS IN SCALDS 120 F 49 C More than 5 minutes 125 F 52 C 112 to 2 minutes 130 F 54 C About 30 seconds 135 F 57 C About 10 seconds 140 F 60 C Less than 5 seconds 145 F 63 Less than 3 seconds 150 F 66 C About 11 seconds 155 F 68 C About 1 second Water Connections continued Upright Models See Figure 1 The hot and cold water connections are identified on the top of the water heater Connect the hot and cold water lines to the installed nipples using unions Install a listed temperature pressure relief valve in the remaining fitting UNION TEMPERATURE AND PRESSURE RELIEF VALVE HOT WATER OUTLET TO APPLIANCES e c COMBINATION WATER OUTLET FITTING I Fe 79 COLD WATER SUPPLY MANUAL SHUT OFF VALVE MUST BE OPEN DURING WATER HEATER ELECTRICAL CoNDUIT OPERATION UNION REMOVABLE PLATE FOR ACCESS TO COMBINATION DIPTUBE COLD WATER INLET FITTING REMOVABLE ELEMENT COVERS xu LO THERMOSTATS ALTERNATE TEMPERATURE AND AND HEATING ELEMENT S 5 PRESSURE RELIEF VALVE LOCATION WIRING DIAGRAM LOCATED ON BACK OF COVER N RELIEF VALVE DISCHARGE LI
21. page Illustration 43 BRADFORD WHITE CO R PO R ATION 29 SERVICE PROCEDURE Light Duty Commercial Thermostat Testing 2 WARNING Double Element Non Simultaneous Three Phase Operation continued High voltage exposure Use caution to avoid personal injury during this procedure Tank Does Not Deliver Enough Hot Water continued Eze v Hi 7 Check voltage across terminal L1 of upper C thermostat amp 2 of lower Thermostat RED RED see illustration 44 L SIE L3 A Rated voltage NOT present L4 Replace lower thermostat T slack BLUE 12 4 B Rated voltage is present okay go to step 8 8 Check voltage across lower element see illustration 45 A Rated voltage NOT present Check wire connections between thermostats amp element B Rated voltage IS present Repeat element testing see page 15 BLUE i BLUE YELLOW YELLOW AA WARNING m Be sure thermostats are reset to their original temperature settings Illustration 44 Illustration 45 as found prior to thermostat testing Water Temperature In Tank Is Above Thermostat Setting L4JL2 L3 G FH 1 This procedure assumes line v
22. thermostat is okay Go to step 5 below C Lower than rated voltage IS present recheck for grounded upper element see page 15 5 Check across terminals L4 and T2 of lower thermostat see illustration 17 A Rated voltage 15 present replace lower thermostat B Rated voltage NOT present lower thermostat is okay C Lower than rated voltage IS present recheck for grounded lower element see page 15 20 L1 L2 L3 YELLOW BLUE T4 412 YELLOW RED Illustration 16 L1 L2 13 L1 L3 L4 YELLOW RED BLACK Illustration 17 S BRADFORD WHITE CORPORATION S SERVICE PROCEDURE RE III Residential Thermostat Testing J Double Element Simultaneous Three Phase WARNING peration High voltage exposure Use caution to avoid personal injury during this procedure Water In Tank Is Cold Or Not Enough Hot 1 12 L3 L1 L2 L3 Water With Power ON 1 This procedure assumes line voltage YELLOW NS ECO and elements are in working order ul ar TE 2 Adjust temperature setting for both 14 L4 thermostats to the highest setting m 12 BLUE 2 Turn power ON to water heater
23. water such as dishwashers and automatic clothes washers TO FILL THE WATER HEATER 1 Close the water heater drain valve if provided by inserting a standard flat head screwdriver into the slot and turning clockwise 2 Open the cold water supply shut off valve 3 Open several hot water faucets to allow air to escape from the system 4 When a steady stream of water flows from the faucets the water heater is filled Close the faucets and check for water leaks at the water heater drain valve combination temperature and pressure relief valve and the hot and cold water connections TO DRAIN THE WATER HEATER Should it become necessary to completely drain the water heater make sure you follow the steps below 1 Disconnect the power supply to the water heater Consult the plumbing professional or electric company in your area for service 2 Close the cold water supply shut off valve 3 Open the drain valve if provided on the water heater by inserting a standard flat head screwdriver into the slot and turning counter clockwise The drain valve has threads on the end that will allow connection of a standard hose coupling For those models not equipped with a drain valve disconnect cold water inlet piping at a convenient connection location as close to an adequate drain as possible CAUTION THIS WATER MAY BE HOT 4 Open a hot water faucet to allow air to enter the system To refill the water heater refer to TO FILL THE WATER
24. 1 u Illustration 26 23 S SERVICE PROCEDURE RE III Residential Thermostat Testing J Double Element Non Simultaneous WARNING Single Phase Off Peak Operation High voltage exposure Use caution to avoid continued e personal injury during this procedure Not Enough Hot Water continued L2 L1 L2 L2 L1 L2 7 Check voltage across terminal T4 of upper thermostat amp T2 of lower Thermostat see illustration 27 RED _ YELLOW RED _ YELLOW L C A Rated voltage NOT present 2 Replace lower thermostat t4L DIEM B Rated voltage is present okay YELLOW YELLOW go to step 8 70 u BLUE BLUE 8 Check voltage across lower element see illustration 28 Pie ripis la SAD aa BLACK BLACK eck wire connections between RED RED thermostats amp element o o Rated voltage IS present Repeat element testing o see page 15 T4 r T4 BLACK BLACK Illustration 27 Illustration 28 WARNING Be sure thermostats are reset to their original temperature settings as found prior to thermostat testing Water Temperature In Tank Is Above Thermostat Setting 1 This procedure assumes Line vo
25. ARTS AND THE WATER HEATER ARE WARRANTED Manufactured under one or more of the following U S Patents RE 34 534 1 5 341 770 4 416 222 4 628 184 4 669 448 4 672 919 4 808 356 4 829 983 4 861 968 4 904 428 5 000 893 5 023 031 5 052 346 5 081 696 5 092 519 5 115 767 5 199 385 5 277 171 5 372 185 5 485 879 5 574 822 5 596 952 5 660 165 5 682 666 5 761 379 5 943 984 5 954 492 5 988 117 6 142 216 6 684 821 7 063 132 7 007 748 Other U S and Foreign patent applications pending Current Canadian Patents 1 272 914 1 280 043 1 289 832 2 045 862 2 092 105 2 107 012 2 108 186 2 112 515 Complete the following information and retain for future reference Model No Serial No Service Phone Days Nights Address Supplier Supplier Phone No 20 BRADFORD WHITE C O O R A T RESIDENTIAL ELECTRIC AND LIGHT DUTY COMMERCIAL ELECTRIC WATER HEATERS ee SERVICE MANUAL Troubleshooting Guide and Instructions for Service To be performed ONLY by qualified service providers Models Covered by This Manual Residential Energy Saver M1 amp M2 HE UprightModels M1 amp M2 Lowboy Models M1 amp M2 UtilityModels M1 amp M2 Wall HungModels Light DutyEnergy Saver LD Upright Models LD Utility Models LD Lowboy LD WallHung Dairy Barn Deluxe Energy Saver Photo is of DB Models M 2 50T6DS Manual 238 47104 00A Save this manual for future reference
26. CORROSIVE VAPORS IS NOT COVERED BY THE WARRANTY DO NOT OPERATE THE WATER HEATER IF EXPOSURE HAS OR WILL OCCUR DO NOT STORE ANY POTENTIALLY CORROSIVE COMPOUNDS IN THE VICINITY OF THE WATER HEATER This water heater must be located in an area where leakage of the tank or water line connections and the combination temperature and pressure relief valve will not result in damage to the area adjacent to the water heater or to lower floors of the structure When such locations cannot be avoided a suitable drain pan must be installed under the water heater The drain pan must have a minimum length and width of at least 4 in 10 2 cm greater than the diameter of the water heater The drain pan as described above can be purchased from your plumbing professional The drain pan must be piped to an adequate drain The piping must be pitched for proper drainage Note For California installation this water heater must be braced anchored or strapped to avoid falling or moving during an earthquake See instructions for correct installation procedures Instructions may be obtained from the DSA Headquarters Office 1102 Q Street Suite 5100 Sacramento CA 95811 Water Connections NOTE BEFORE PROCEEDING WITH THE INSTALLATION CLOSE THE MAIN WATER SUPPLY VALVE After shutting the main water supply valve open a faucet to relieve the water line pressure to prevent any water from leaking out of the pipes while making the water connections to the water h
27. E PROCEDURE RE I Line Voltage amp High Limit ECO Testing J Line Voltage Testing WARNING High voltage exposure Use caution when 1 Turn OFF power to water heater making voltage checks to avoid personal injury 2 Remove access cover s from front of water heater Remove insulation and plastic cover BLACK RED 208 240 480 from thermostat BLARK RED 1208240 480 WHITE 120 277 WHITE 120 277 ECO reset Lil Bi 3 Set multi meter to volts AC 4 Turn power ON to water heater E ns 5 Check voltage across terminals L1 amp L3 a ae of upper thermostat see illustration 2 RED A Rated voltage IS present power to the water 2 heater is okay E BLACK BLACK B Rated voltage NOT present Check circuit breaker L at service panel Illustration 2 Illustration 3 High Limit ECO Testing 1 Check voltage across terminals L1 amp L4 upper thermostat see illustration 3 A Rated Voltage IS present ECO is okay B Rated voltage NOT present proceed to step 2 2 Turn power OFF to water heater and firmly press ECO reset button on thermostat s Turn power ON and recheck voltage across terminals L1 amp L4 of upper thermostat see illustration 3 A Rated voltage IS present the ECO has
28. ECO If ECO is okay replace thermostat resent 77 THERMOSTAT Rated voltage 15 present proceed to next step 5 Check across element terminals see illustration 7 A Rated voltage NOT present check wire connections from thermostat to element ELEMENT Rated voltage 15 present Repeat element testing see page 15 Water Temperature In Tank Is Above Thermostat Setting 1 This procedure assumes line voltage ECO and elements are in working order 2 Turn power ON to water heater 3 Set multi meter to Volts 4 See illustration 6 above check across terminals L4 and T2 of thermostat A Rated voltage IS present replace thermostat B Rated voltage NOT present thermostat 16 okay C Lower than rated voltage IS present recheck for grounded element see page 15 mm ED 208 240 480 HITE 120 277 Illustration 6 L1 L2 BLACK RED 208 240 480 WHITE 120 277 ul gH la O g ELEMENT Illustration 7 Lt 12 BLACK RED 208 240 480 WHITE 120 277 r3 L1 L2 YELLOW BLUE BLUE THERMOSTAT YELLOW Od 14 2 li _ RED BLACK tHeaMostat gon Reference 4 Wire Simultaneous Single Phase Wiring diagram NOTE Wiring
29. ECO high limit ECO high limit 59T Series 89T Series 89T Series Direct Immersion Screw in Type Heating Element 1 Hex Screw in Flange Terminal Block Zinc Plated Copper or Incoloy Sheath Terminal Block Element Rating Ink Stamped Screw on side of Terminal Block BRADFORD WHITE CO R PO R ATION S SEQUENCE OF OPERATION P Residential and light duty commercial electric water heaters are designed to operate using several different operating modes The common modes and sequence of operation are as follows 1 Single Element Operation 2 Double Element Non Simultaneous Operation single phase 3 Double Element Non Simultaneous Operation 3 phase 4 Double Element Simultaneous Operation single phase 5 Double Element Simultaneous Operation 3 phase Sequence of Operation Single Element Operation 1 Line voltage is applied across terminals T D L1 amp L3 of the thermostat ECO is 1 closed so there is voltage at terminal L4 BLACK RED 208 240 480 and to one side of the element L WHITE 120 277 Li L3 O Closed 14 tO RED 208 240 480 E WHITE 120 277 THERMOSTAT ELEMENT 2 Tank is cold therefore thermostat T 2 is closed at terminal T2 calling for heat I 2 This completes the circuit and allow
30. HITE CANADA INC Mississauga ON Sales 866 690 0961 905 238 0100 Fax 905 238 0105 Technical Support 800 334 3393 Email parts bradfordwhite com techserv bradfordwhite com www bradfordwhite com
31. J 1 This procedure assumes line voltage ECO and elements are in working order 2 Adjust temperature setting for both thermostats to the highest setting 3 Turn power ON to water heater 4 Set multi meter to Volts AC 5 Check across terminals L4 and T2 of upper thermostat see illustration 35 A Rated voltage NOT present Recheck upper EC see page 14 If ECO is okay replace upper thermostat 18 Rated voltage IS present proceed to next step BLACK 6 Check across upper element terminals see illustration 36 G A Rated voltage NOT present check wire connections from thermostat to upper element Illustration 35 Illustration 36 B Rated voltage IS present Repeat element testing see page 15 7 Check across terminal L3 of upper thermostat and T2 of lower thermostat see illustration 37 BLACK WHITE A Rated voltage NOT present i Check ECO see page 14 amp wire OED connections at upper amp lower L4 thermostats If okay 1 replace lower thermostat Qr BUE BLACK B Rated voltage IS present proceed to next step 8 Check across lower
32. LIGHT DUTY COMMERCIAL ELECTRIC WATER HEATER A Spanish language version of these instructions is available by contacting the company listed on the rating plate La versi n espanola de estas instrucciones se puede obtener al escribirle a la f brica cuyo nombre aparece en la placa de especificaciones INSTALLATION amp OPERATING INSTRUCTION MANUAL THE WARRANTY ON THIS WATER HEATER IS IN EFFECT ONLY WHEN THE WATER HEATER IS INSTALLED AND OPERATED IN ACCORDANCE WITH LOCAL CODES AND THESE INSTRUCTIONS THE MANUFACTURER OF THIS HEATER WILL NOT BE LIABLE FOR ANY DAMAGE RESULTING FROM FAILURE TO COMPLY WITH THESE INSTRUCTIONS READ THESE INSTRUCTIONS THOROUGHLY BEFORE STARTING For safety and convenience it is recommended that this water heater be installed and serviced by a plumbing professional 238 40759 00R REV 8 10 TABLE OF CONTENTS General Information 3 Installations Cava Qu ve pul c e 4 Locating The Water Heater 4 Water Connections 5 Electrical Connections 10 General Operation J 16 Thermostat Adjustment 17 MAINIGNANCC 18 CONGRATULATIONS You have just purchased one of the finest water heat
33. NE PIPED TO SUITABLE DRAIN AS ILLUSTRADTED DRAIN VALVE DRAIN PAN PIPED TO SUITABLE DRAIN AS ILLUSTRATED gt 6 15 3 cm Figure 1 Utility Models See Figure 2 Utility models are supplied with inlet and outlet nipples located in a plastic bag attached to the side of the water heater The hot and cold water connections are identified on the side of the water heater Apply appropriate amount of thread sealant to the provided nipples and install them into the side of the tank For 20 gallon utility models install the supplied anode nipple combination at the HOT outlet location Connect the hot and cold water lines to the installed nipples using unions Install a listed temperature pressure relief valve in the opening on the side of the water heater Install a vacuum relief anti siphon device in the cold water inlet line ANODE 6 12 amp 30 GALLON MODELS ONLY REMOVABLE PLATE FOR ACCESS TO WIRING ALTERNATE COLD INLET 6 amp 12 GALLON MODELS ONLY ELECTRICAL CONDUIT ALTERNATE HOT OUTLET 6 amp 12 GALLON MODELS ONLY __ COMBINATION TEMPERATURE AND PRESSURE RELIEF VALVE RELIEF VALVE DISCHARGE LINE PIPED TO SUITABLE DRAIN AS ILLUSTRATED UNION HOT WATER OUTLET TO APE ANCES ELECTRICAL CONDUIT KNOCKOUT HEX HEAD ANODE O 10 amp 15 GALLON MODELS ONLY 10 amp 15 GALLON MODELS ONLY REMOVABLE ELEMENT COVER MANUAL SHUT OFF VALVE K FOR ACCESS
34. O R ATION SEQUENCE OF OPERATION thermostat and to one side of the upper and lower elements Tank is cold therefore both thermostats Y BLACK ELLOW Yl BLACK ELLOW are closed at terminal T2 calling for heat This completes the circuit through the Closed thermostats and allows current to flow T through the elements a m BLACK THERMOSTAT BLACK THERMOSTAT Circuit two H H H H H 3 L2 When either thermostat is satisfied it will Circuit one open at terminal T2 interrupting current 12 YELLOW BLUE flow through the corresponding element As ad both thermostats satisfy the system will be Thermostat open O d A HH atterminal T2 in stand by mode waiting for the next call RED 208 240 480 for heat Thermostats will operate 120 277 independent of the other et YELLOW Thermostat open LA atterminal T2 J Oo 12 RED BLACK THERMOSTAT 4wire double element heater wired for simultaneous operation is essentially two single element systems operating independently The heaters are wired internally with two independent circuits one circuit for each thermostat element combination When installed using a two wire service the blue and red or white wires
35. R SINGLE PHASE OPERATION MOVE WIRE FROM TERMINAL BLOCK CONNECTION L3 TO TERMINAL BLOCK CONNECTION 11 FOR SIMULTANEOUS OPERATION RESET MOVE WIRE FROM L4 TERMINAL T4 ON BLUE UPPER THERMOSTAT UPPER THERMOSTAT E TO L1 TERMINAL ON YELLOW Figure 3A Electrical Connections continued NON SIMULTANEOUS C BLACK WHITE J C C FOR SIMULTANEOUS OPERATION ED MOVE WIRE FROM TERMINAL T4 ON UPPER THERMOSTAT TO L1 TERMINAL ON UPPER THERMOSTAT Figure 3B Electrical Connections continued SINGLE ELEMENT MODELS WALL HU NG MODELS ALL UTILITIES EXCEPT 10 amp 15 GALLON I EZ 5 G BLACK RED 208 240 480 WHITE 120 277 J 1 3 RESET E O Oo 12 THERMOSTAT BLACK ELEMENT LIMIT ED 208 240 480 HITE 120 277 A Figure 4 SINGLE ELEMENT MODELS 10 amp 15 GALLON U TILITY MODELS 1 BLACK RED 208 240 480 WHITE 120 277 RESET ESQ 2 THERMOSTAT BLACK ELEMENT RED 208 240 480 WHITE 120 277 Figure 4A Electrical Connections continued The follo
36. Simultaneous Three Phase Operation continued WARNING High voltage exposure Use caution to avoid personal injury during this procedure Tank Does Not Deliver Enough Hot Water continued 7 Check voltage across terminal L1 amp L3 of lower thermostat see illustration 16 A Rated voltage NOT present check wire connection between thermostats B Rated voltage is present okay go to step 8 8 Adjust lower thermostat to highest setting Water temperature in tank must be below the lower thermostat setting for this test 9 Check voltage across terminal L4 amp T2 of lower thermostat see illustration 17 A Rated voltage NOT present recheck ECO see page 14 If ECO okay replace lower thermostat B Rated voltage IS present thermostat is ok Check wire connection to lower element If connection okay recheck lower element see page 15 WARNING Be sure thermostats are reset to their original temperature settings as found prior to thermostat testing Water Temperature In Tank Is Above Thermostat Setting 1 This procedure assumes Line voltage ECO and elements are in working order 2 Adjust upper and lower thermostats to the lowest setting 3 Turn power ON to water heater and set multi meter to Volts AC 4 Check across terminals L4 and T2 of upper thermostat see illustration 13 on page 19 A Rated voltage 15 present replace upper thermostat B Rated voltage NOT present upper
37. ater for draining Open drain spigot of water heater and allow heater to drain to a point below the outlet connection nipple Close drain spigot and remove hose Disconnect outlet nipple from plumbing system With an appropriate wrench remove outlet nipple anode from the water heater Use caution not to damage nipple threads Visually Inspect outlet nipple anode Outlet nipple anode should show signs of depletion this is normal If depletion is 1 of the original anode diameter original diameter approximately 24 replacement is recommended If any ofthe steel core of the anode is exposed replacement is recommended Upon completion of inspection or subsequent replacement reinstall outlet nipple anode into heater Connect nipple to plumbing system close spigot and remove drain hose resume water supply and refill heater with water To resume operation BE SURE HEATER IS FULL OF WATER and turn power ON to water heater 35 CO R PO R ATION J Generic Parts List Double element water heater non and three phase operation Doub simu Single element water heater element water heater simultaneous three phase operation Doub Doub non TOP LOCATION simultaneous single phase TOP LOCATION e element water heater taneous operation BOTTOM LOCATION e element water heater simu Double element water heater non operation 36 taneous
38. e water heater is filling open several hot water faucets to allow air to escape from the water system When a steady stream of water flows through the faucets close them and check all water connections for possible leaks NEVER OPERATE THE WATER HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER A WARNING Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time generally two weeks or more Hydrogen gas is extremely flammable To reduce the risk of injury under these conditions it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system If hydrogen is present there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow There should be no smoking or open flame near the faucet at the time it is open Water Connections continued A WARNING For protection against excessive temperatures and pressure install temperature and pressure protective equipment required by local codes but not less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials as meeting the Requirements for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems ANSI 221 22 and the
39. eat element testing see page 15 Tank Does Not Deliver Enough Hot Water 1 This procedure assumes line voltage ECO and elements are in working order Be sure OFF PEAK meter has not interrupted line voltage 2 Turn power ON to water heater and set multi meter to Volts 3 Adjust temperature setting of upper amp lower thermostat to the Highest setting Water temperature in tank must be below thermostat setting for this test 4 See illustration 24 above Check voltage across terminals L4 amp T2 of upper thermostat A Rated voltage IS present okay upper thermostat is calling for heat Go to step 5 below B Rated voltage NOT present replace upper thermostat 5 Adjust temperature setting of upper thermostat to the minimum ae m Water temperature in tank must be above thermostat setting or this test 6 Check voltage across terminals T4 of upper thermostat amp L1 of lower thermostat see illustration 26 A Rated voltage NOT present replace upper thermostat B Rated voltage IS present upper thermostat is okay Go to step 7 on next page BRADFORD WHITE CO R PO R ATION Illustration 24 BLACK Illustration 25 2 2 RED YELLOW L4 YELLOW 4
40. eater After the pressure has been relieved close the faucet The COLD water inlet and HOT water outlet are identified on top of the water heater The fittings at the cold water inlet and hot water outlet are dielectric waterway fittings with 3 4 NPT tapered male threads Make the proper plumbing connections between the water heater and the plumbing system in the house Install a shut off valve in the cold water supply line A CAUTION If sweat fittings are to be used DO NOT apply heat to the nipples on top of the water heater Sweat the tubing to the adapter before fitting the adapter to the water connections It is imperative that heat is not applied to the nipples containing a plastic liner Water Connections continued IMPORTANT FAILURE TO INSTALL AND MAINTAIN A NEW LISTED 3 4 X 3 4 TEMPERATURE PRESSURE RELIEF VALVE WILL RELEASE THE MANUFACTURER FROM ANY CLAIM WHICH MIGHT RESULT FROM EXCESSIVE TEMPERATURE AND PRESSURES If this water heater is installed in a closed water supply system such as the one having a back flow preventer in the cold water supply provisions shall be made to control thermal expansion DO NOT operate this water heater in a closed system without provisions for controlling thermal expansion Your water supplier or local plumbing inspector should be contacted on how to control this situation After installation of the water lines open the main water supply valve and fill the water heater While th
41. ed L 1 at terminal T2 Rr L 12 T4 BLUE YELLOW L J BLACK RED L L1 L3 Thermostat closed L4 at terminal T2 P T2j BLACK 2 13 YELLOW RED 1 13 Thermostat closed at terminal 2 12 9 14 YELLOW BLACK Thermostat closed at terminal T2 ED 2 R BLACK L1 12 ES 7 YELLOW RED Thermostat closed LA atterminal T4 YELLOW BLACK RED L4 Thermostat open atterminal T2 T2 RED 9 SEQUENCE OF OPERATION Sequence of Operation Double Element Simultaneous Operation 3 Phase f L1 L2 L3 L1 L2 L3 1 Line voltage is applied across terminals L1 1 2 amp L3 of upper thermostat Line voltage also YELLOW BLUE YELLOW BLUE extends to terminal L1 of lower thermostat Also line voltage is applied to terminal L3 k L Closed Thermostat closed of lower thermostat ECO in both upper amp LJ at terminal T2 lower thermostat is closed so there is J BE ats RED voltage at terminal L4 of both thermostats a L and to one side of both upper amp lower YELLOW YELLOW elements BLACK BLACK 2 Tank is cold therefore both thermostats ee L1 L1 L3 L1 13 4
42. element terminals aes see illustration 38 A Rated voltage NOT present check lower element wire connections to the thermostats B Rated voltage IS present Repeat lower element testing see page 15 AA WARNING Be sure thermostats are reset to their original temperature settings Illustration 37 Illustration 38 as found prior to thermostat testing BRADFORD WHITE CO R PO R ATION 27 SERVICE PROCEDURE RE IV Light Duty Commercial Thermostat Testing 2 Double Element Simultaneous Single Phase A WARNING Operation continued Hi igh voltage exposure Use caution to avoid personal injury during this procedure Water Temperature In Tank Is Above Thermostat Setting 1 This procedure assumes line voltage ECO and elements are in working order Adjust upper and lower thermostat to the lowest setting Turn power ON to water heater Set multi meter to Volts AC BLACK a Oo N Check across terminals L4 and T2 of upper thermostat see illustration 39 A Rated voltage IS present replace upper thermostat B Rated voltage NOT present upper thermostat is okay Go to step 6 below C lower than rated voltage IS present recheck for grounded upper element see page 15 6 Check acro
43. emperature in tank must be below thermostat setting for this test 4 See illustration 8 above check voltage across terminals L4 and T2 of upper thermostat A Rated voltage IS present okay upper thermostat is calling for heat Go to step 5 below B Rated voltage NOT present replace upper thermostat 5 Adjust temperature setting of upper thermostat to the minimum setting Water temperature in tank must be above thermostat setting for this test 6 Check voltage across terminals L4 and T4 of upper thermostat see illustration 10 A Rated voltage NOT present replace upper thermostat B Rated voltage IS present thermostat is okay Go to step 7 on next page BRADFORD WHITE CO R PO R ATION 12 BLACK RED 208 240 480 WHITE 120 277 J Hlustration 9 L2 RED 208 240 480 WHITE 120 277 J Illustration 10 17 N SERVICE PROCEDURE RE III Residential Thermostat Testing 2 A WARNING Double Element Non Simultaneous Single Phase High voltage exposure Use caution to avoid Operation continued m personal injury during this procedure Not Enough Hot Water continued 1 RED 208 240 480 7 Check voltage across terminal L4 of upper BLACK WHITE 120 277 J thermostat and terminal 1 of lower thermostat see i
44. ent upper thermostat is okay Go to step 6 below C lower than rated voltage S present recheck for grounded upper element see page 15 6 Check across terminals L4 amp T2 of lower thermostat Illustration 51 see illustration 52 A Rated voltage IS present replace lower thermostat L1L2 L3 G H B Rated voltage NOT present aux EM lower thermostat is okay RED YELLOW a C lower than rated voltage IS present EH O recheck for grounded lower element L4 BLACK Or BLUE Illustration 52 S BRADFORD WHITE C O R P O R A T LO N 32 SERVICE PROCEDURE RE V Thermostat Removal and Replacement P Thermostat Removal A WARNING Turn power OFF To water heater High voltage exposure Be sure power is a 1 OFF when performing this procedure Remove access cover and insulation 1 2 3 Remove plastic thermostat protector from thermostat 4 Disconnect wires from thermostat terminals It may be necessary to label wires for proper re connection to new thermostat Note thermostat temperature setting for proper setting of new thermostat 6 Slide thermostat upwards and out of mounting bracket Thermostat Replacement 1 Use a stiff brush to remove any debris or loose scale from tank surface where new thermostat will be instal
45. er RE VII Page 35 10 Damaged dip tube 9 Correct plumbing connections 1 Remove heating element s and check for Noisy singing or hissing Elements 1 Lime formation on elements 1 Remove and clean heating elements Replace as needed 1 Sediment or lime build up on element s lime build up 1 See Service Procedure Slow Hot Water 2 Loose wire connections 2 Check all wire connections RE VI Page 34 Recovery 3 Inoperative thermostat s 3 Check thermostat s replace as needed 3 See Service Procedure 4 Derated heating element installed 4 Check terminal block of element for proper RE III Page 16 voltage and wattage rating a Position thermostat flush with tank surface 1 See Service Procedure Over Heated 1 Thermostat not in contact with tank 2 Check heating element s Replace as RE V Page 33 2 Grounded heating element s needed 2 See Service Procedure Water or 3 Thermostat set to high 3 Adjust thermostat s to desired setting RE II Page 15 Continues 4 Inoperative thermostat s 4 Check thermostat s replace as needed 4 See Service Procedure 5 Inoperative ECO 5 Check ECO replace thermostat as RE III Page 16 Operation 6 Undersized water heater needed 5 See Service Procedure 6 Replace with larger heater RE I Page 14 gt 1 See Service Procedure Page 34 s BRADFORD WHITE CO R PO R ATION 18 SERVIC
46. ermostat is satisfied it opens at terminal T2 interrupting current flow through upper element and closes at terminal T4 allowing voltage to pass to terminal L1 of lower thermostat This completes the circuit through the lower thermostat allowing current flow through lower element When the lower thermostat is satisfied it opens at terminal T2 interrupting the current flow through the lower element The system is now in stand by mode waiting for the next call for heat The lower thermostat element combination will generally cycle on and off more often then the upper In some cases such as a cold tank or in high demand periods the upper thermostat will call for heat opening at terminal T4 and closing at terminal T2 prior to the lower thermostat being satisfied This will interrupt current flow through the lower thermostat and element and allow current to flow through the upper element only When the upper thermostat is satisfied it resumes operation as described in sequence 3 above s L1 12 13 12 YELLOW RED ul 13 ECO Closed L0 BLUE cum YELLOW L ED R L 1j RED BLACK ECO Closed L1 3 L2 3 G Thermostat closed 14 at terminal T4 YELLOW BLACK RED Thermostat closed 14 at terminal T2 SS L1 L2 13 YELLOW RED 1 L3 Thermostat clos
47. ers on the market today This installation operation and instruction manual will explain in detail the installation and maintenance of your new Light Duty Commercial Electric Water Heater We strongly recommend that you contact a plumbing professional for the installation of this water heater We require that you carefully read this manual as well as the enclosed warranty and refer to it when questions arise If you have any specific questions concerning your warranty please consult the plumbing professional from whom your water heater was purchased For your records we recommend that you write the model serial number and installation date of your water heater in the maintenance section in the back of this manual This manual should be kept with the water heater GENERAL INFORMATION This electric water heater s design is certified by Underwriters Laboratories UL and listed in accordance with UL 174 C UL listed in accordance with Canadian National Standard C22 2 No 110 90 This water heater must be installed in accordance with local codes In the absence of local codes install this water heater in accordance with the N E C Reference Book latest edition The warranty for this water heater is in effect only when the water heater is installed adjusted and operated in accordance with these Installation and Operating Instructions The manufacturer will not be held liable for damage resulting from alteration and or failu
48. g tank life The following maintenance should be performed by a qualified service technician at the minimum periodic intervals suggested below In some installations the maintenance interval may be more frequent depending on the amount of use and the operating conditions of the water heater Regular inspection and maintenance of the water heater will help to insure safe and reliable operation 1 Annually check the operation of the thermostat s 2 Bi annually check the seal around the heating elements for leaks If there is any sign of leaking disconnect the power supply to the water heater and contact the plumbing professional who installed this water heater or a qualified service technician 3 At least once a year check the combination temperature and pressure relief valve to insure that the valve has not become encrusted with lime Lift the lever at the top of the temperature pressure relief valve several times until the valve seats properly without leaking and operates freely Maintenance continued 4 WARNING When lifting lever of temperature pressure relief valve hot water will be released under pressure Be certain that any released water does not result in bodily injury or property damage 4 If the combination temperature and pressure relief valve on the appliance discharges periodically this may be due to thermal expansion in a closed water supply system Contact the water supplier or local plumbing inspector o
49. harge line It is recommended that a minimum of four 4 inches 10 2 cm be provided on the side of the water heater for servicing and maintenance of the combination temperature and pressure relief valve Do not place a valve between the combination temperature and pressure relief valve and the tank Water Connections continued A CAUTION INCREASING THE THERMOSTAT SETTING ABOVE THE PRESET TEMPERATURE MAY CAUSE SEVERE BURNS AND CONSUME EXCESSIVE ENERGY HOTTER WATER INCREASES THE RISK OF SCALD INJURY This water heater can deliver scalding temperature water at any faucet in the system Be careful whenever using hot water to avoid scalding injury Certain appliances such as dishwashers and automatic clothes washers may require increased temperature water By setting the thermostat on this water heater to obtain increased temperature water required by these appliances you may create the potential for scald injury To protect against injury you should install an ASSE approved mixing valve in the water system This valve will reduce point of discharge temperature by mixing cold and hot water in branch supply lines Such valves are available from the manufacturer listed on the rating plate or from your local plumbing supplier Please consult with a plumbing professional Water temperature over 125 F A N e R 52 C can cause severe burns instantly or death from scalds Children disabled and elderly are at highest risk
50. heater must be well grounded The green ground wire from the power supply shall be attached to the terminal marked for this purpose on the terminal block for all water heaters except 10 and 15 gallon utility models For 10 and 15 gallon utility models the ground wire shall be attached to the green ground screw located under the element access cover Upright and lowboy models are wired for unbalanced three phase delta branch circuit operation Upright and lowboy models only may be converted to single phase and or simultaneous operation as shown on the wiring diagram see figure 3A and 3B To ensure proper electrical connection check the voltage and wiring configuration on the rating plate located on the front of the water heater Run the power leads from an adequately fused disconnect switch not supplied and connect the wires to the water heater according to the wiring diagram found in these installation and operation instructions see figures 3A 3B 4 and 4A for correct wiring diagram and located on the front of the water heater Where longer runs are needed or local codes and ordinances require an increase in wire size may be necessary Consult local codes and or your local power company for any specific requirements which may apply In the absence of local codes and ordinances refer to the National Electrical Code Electrical Connections continued NON SIMULTANEOUS 5 PHASE UNBALANCED EDO 1 os P FO
51. ion is such to eliminate the probable ignition of gasoline or flammable vapors The location this water heater is to be installed is of utmost importance Before installing this water heater consult the installation section of these instructions After reading these installation and operating instructions select a location for the water heater where the floor is level and is easily accessible to a power supply and water connections It is recommended that the water heater be located near the center of greatest hot water usage to prevent heat loss through the pipes DO NOT locate the water heater where water lines could be subjected to freezing temperatures Locate the water heater so that access panels and drain valves are accessible Some models are not equipped with a drain valve For those models install a drain tee in the cold water inlet as close as practical to the water heater Water heater corrosion and component failure can be caused by the heating and breakdown of airborne chemical vapors Examples of some typical compounds that are potentially corrosive are spray can propellants cleaning solvents refrigerator and air conditioning refrigerants swimming pool chemicals calcium or sodium chloride waxes and process chemicals 4 Locating the Water Heater continued These materials are corrosive at very low concentration levels with little or no odor to reveal their presence NOTE DAMAGE TO THE WATER HEATER CAUSED BY EXPOSURE TO
52. is OFF when performing this procedure 1 Turn power OFF To water heater 2 Turn off cold water supply to heater Connect hose to drain spigot of water heater and route to an open drain Open A WARNING oO A OQ a nearby hot water faucet to vent heater for draining Open Heater components and stored water may be drain spigot of water heater and allow heater to drain HOT when performing the following steps in to a point below the Element s EDEN this procedure Take necessary precaution to Close drain spigot and remove hose prevent personal injury Remove access cover and insulation Remove plastic thermostat protector from thermostat Disconnect wires from element terminals Remove element from tank using 1 72 deep well socket or appropriate wrench Unscrew element counter clockwise to remove from tank Be sure to remove old element gasket from the tank It is not recommended to be re used Heating Element Replacement 1 o N O 34 Check element terminal block for proper electrical rating NOTE Some elements have dual ratings be sure to check all surfaces of the element terminal block see illustration below Apply new element gasket to the new element Be sure gasket is seated flat against element flange without rolls or gaps see illustration below Clean any debris from element fitting on tank Lubricate element threads as needed with thread lubricant Thread ne
53. l call for heat de energizing the lower element and allowing only the top element to energize until the upper thermostat is satisfied Simultaneous mode allows both heating elements to operate at the same time That is if either thermostat upper or lower is calling for heat the corresponding heating element is energized independent of the other Sequence of Operation Double Element Non Simultaneous Operation Single Phase Line voltage is applied across terminals L1 amp L3 ofthe upper thermostat ECO is closed so there is voltage at terminal L4 and to one side of the upper and lower elements 2 V d AON 2 RED 208 240 480 BLACK RED 208 240 480 Tank is cold therefore both thermostats BON WHITE 120 277 WHITE 120 277 are closed at terminal T2 amp 2 calling for heat The LTE E L i circuit is complete through the upper thermostat Or Closed Thermostat closed o only allowing current to flow through upper element il aie T4 3 When upper thermostat is satisfied it opens at YELLOW YELLOW terminal T2 interrupting current flow through upper element and closes at terminal T4 allowing voltage BLACK BLACK to pass to terminal 1 of lower thermostat This RED RED completes the circuit through the lower thermostat and allows current flow through lower element Thermestat closed at terminal 2
54. led 2 Slide new thermostat down into thermostat bracket until it snaps into place IMPORTANT Thermostat must set ea flat or flush to tank surface An improperly installed thermostat will cause improper water heater Operation 3 Refer to the wire diagram located on the inside of the access cover and re connect wires to the thermostat Be sure wire connections are snug and corrosion free Do not over tighten doing so may damage thermostat Set thermostat to the original thermostat setting found on the old thermostat Re install plastic thermostat protector Re install insulation and access cover NO Restore power to water heater and verify proper heater operation Tank Surface EE Proper Thermostat mounting d flush with tank surface m deu OS 8 amp Thermostat hl r Improper Thermostat mounting Thermostat not flush with tank surface Thermostat mounting bracket Front View Thermostat Mounting Side View Side View Proper Thermostat Improper Thermostat Mounting Mounting BRADFORD WHITE CO R PO R ATION 33 SERVICE PROCEDURE Heating Element Removal and Replacement J WARNING Heating Element Removal High voltage exposure Be sure power
55. llustration 11 A Rated voltage NOT present check wire connection between thermostats B Rated voltage IS present okay go to step 8 8 Adjust lower thermostat to highest setting Water temperature in tank must be below the lower thermostat setting for this test 9 Check voltage across terminal L4 of upper thermostat and terminal 2 of lower thermostat see illustration 12 A Rated voltage NOT present replace lower thermostat B Rated voltage IS present thermostat is ok WARNING Be sure thermostats are reset to their original temperature settings as found prior to Illustration 11 thermostat testing L1 2 RED 208 240 480 Water Temperature In Tank Is Above Thermostat Setting T 120 277 I J 1 This procedure assumes Line voltage ECO and elements are in working Hot order L4 2 Adjust upper and lower thermostats to the lowest setting ru T4 BLUE 3 Turn power ON to water heater and set multi meter to Volts AC YELLOW 4 Check across terminals L4 and T2 of upper thermostat see illustration 8 on page 17 BLACK A Rated voltage IS present replace upper thermostat RED B Rated voltage NOT present upper thermostat is okay Go to step 5 below 2 Lower than rated voltage IS present recheck for grounded upper BLACK element see page 15
56. ltage ECO and elements are in working order 2 Adjust upper and lower thermostats to the lowest setting 3 Turn power ON to water heater and set multi meter to Volts 4 Check across terminals L4 and T2 of upper thermostat see illustration 24 on page 23 A Rated voltage IS present replace upper thermostat B Rated voltage NOT present upper thermostat is okay Go to step 5 below C Lower than rated voltage IS present recheck for grounded upper element see page 15 5 Check across terminals T4 of upper thermostat and T2 of lower thermostat see illustration 27 above A Rated voltage IS present replace lower thermostat B Rated voltage NOT present lower thermostat is okay C Lower than rated voltage IS present recheck for grounded lower element see page 15 S BRADFORD WHITE C O R P O R A T LO N 24 SERVICE PROCEDURE Light Duty Commercial Thermostat Testing J Double Element Non Simultaneous Single Phase Operation WARNING High voltage exposure Use caution to avoid personal injury during this procedure Water In Tank Is Cold With Power ON 12256 1 1 This procedure assumes line voltage ECO and elements are in working order Bee WHITE 2 Turn power ON to water heater 3 Set multi meter to Volts AC 4 Check across terminals L4 and T2 of upper thermostat see illustration 29 A Ra
57. luxe DB Series Simultaneous Operation Maximum Element Voltage Wattage Upper Lower 3 000 1 500 1 500 120 10 000 5 000 5 000 208 11 000 5 500 5 500 240 12 000 6 000 6 000 277 480 Residential Electric Utility Series Single Element Operation Light Duty Utility Series Single Element Operation Maximum Single Voltage Wattage Element 3 000 3 000 120 6 000 6 000 208 240 6 000 6 000 277 6 000 6 000 480 S BRADFORD WHITE C O R P O R A T LO N GENERAL INFORMATION Surface Mounted Thermostats Surface mounted thermostats are mounted into a bracket which holds the thermostat against the side of the tank Surface mounted thermostats respond to tank surface temperatures to sense a call for heat set point temperature settings and high limit ECO activation It is import that the entire back surface of the thermostat is in full contact or flush with the tank Improperly mounted thermostat will lead to improper heater operation ya ECO high limit e RESET Reset button 13538 I uu 09 00 a Temperature O Temperature control Dial control Dial VERY HOT Surface Mount Surface Mount Surface Mount Combination Thermostat Combination Thermostat Thermostat
58. n how to correct this situation Do not plug the combination temperature and pressure relief valve outlet for any reason 5 Monthly drain off a gallon of water from the water heater to remove silt and sediment WARNING THIS WATER MAY BE HOT 6 A combination sacrificial anode rod hot water outlet nipple has been installed to extend tank life The anode rod should be inspected periodically every 2 years and replaced when necessary to prolong tank life Water conditions in your area will influence the time interval for inspection and replacement of the anode rod Contact the plumbing professional who installed the water heater or the manufacturer listed on the rating plate for anode replacement information The use of a water softener may increase the speed of anode consumption More frequent inspection of the anode is needed when using softened or phosphate treated water CAUTION FOR YOUR SAFETY DO NOT ATTEMPT TO REPAIR THERMOSTAT S HEATING ELEMENTS OR ELECTRICAL WIRING REFER SUCH REPAIRS TO A QUALIFIED SERVICE TECHNICIAN Maintenance continued Contact your local plumbing supplier or plumbing professional for replacement parts or contact the company at the address displayed on the rating plate of the water heater For faster and better service please provide the part name model and serial number s of the water heater s when ordering parts READ THE WARRANTY FOR A FULL EXPLANATION OF THE LENGTH OF TIME THAT P
59. oltage ECO and elements are in working order RED __ YELLOW Ha LY 2 Adjust upper and lower thermostat to the lowest setting 3 Turn power ON to water heater and Set multi meter to Volts AC 4 See illustration 44 above Check across terminal L1 of upper thermostat amp T2 of lower thermostat BLACK A Rated voltage IS present replace lower thermostat z B Rated voltage NOT present okay go to step 5 below C lower than rated voltage IS present recheck for grounded lower element 5 Check across terminal L4 amp T2 of upper thermostat see illustration 46 1 A Rated voltage IS present replace upper thermostat BLUE YELLOW B Rated voltage NOT present upper thermostat is okay C lower than rated voltage IS present recheck for grounded upper element see page 15 Illustration 46 S BRADFORD WHITE C O R P O R A T LO N 30 SERVICE PROCEDURE RE IV Light Duty Commercial Thermostat Testing E Double Element Simultaneous Three Phase Operation A WARNING High voltage exposure Use caution to avoid personal injury during this procedure Water In Tank Is Cold Or Not Enough Hot Water With Power ON 1 This procedure assumes line voltage o y L2IL5 6 pv HE ECO and elements are in working order nd C RED YELLOW 2 Adjust temperature setting for both C Iu J thermo
60. opened indicating the water in the tank is or has over heater Check the following 1 Thermostat must be in full contact with tank 2 Be sure heating element s is not shorted to ground see page 15 3 Proper thermostat operation See procedures beginning on page 16 B Rated voltage NOT present water in tank may be over heated 1 If water is hot turn OFF power to water heater and flow water through tank to cool below set point of upper thermostat Recheck voltage per step 1 2 If water is cool Replace upper thermostat S BRADFORD WHITE C O R P O R A T LO N 14 SERVICE PROCEDURE Heating Element Testing Testing For Open Or Burned Out Element Step 1 TURN OFF POWER TO WATER HEATER Step 2 Remove access cover s from front of water heater Remove insulation and plastic cover from thermostat Step 3 Disconnect wires from heating element Step 4 Set multi meter to ohms setting Step 5 Touch probes of multi meter to screw terminals of heating element see illustration 4 Step 6 Reading should be 12 8 ohms 6 for a 240 volt 4500 watt element Ohms Volts Watts A reading outside the range using the formula above X696 indicates a bad element and the element must be replaced Testing For Heating Element Short Circuit To Ground Step 1 TURN OFF POWER TO WATER HEATER Step 2 Remove access cover s from front of water heater Remove insulation and plastic cove
61. operation BOTTOM LOCATION simultaneous single phase T amp P Relief Valve Heat Trap Insert Outlet Hot Water Outlet Anode Cover Conduit Ground Junction Box Cover Heat Trap Insert Inlet Cold Water Inlet Dip Tube Thermostat Protector Large Thermostat w High Limit 89T33 0 Thermostat Mounting Bracket 4 2 3 4 5 6 7 8 9 1 11 12 13 14 16 17 18 19 20 Heating Element Element Gasket Access Cover Lower Thermostat Protector Small Thermostat 59T Brass Drain Valve Thermostat w High Limit 89T13 ASSE Approved Mixing Device Kit Heat Trap Kit Dairy Barn Leg S BRADFORD WHITE C O R P O R A T LO N NOTES BRADFORD WHITE CO R PO R ATION 37 NOTES BRADFORD WHITE PO R ATION 38 NOTES BRADFORD WHITE CO R PO R ATION 39 BRADFORD WHITE Ambler PA For U S and Canada field service contact your professional installer or local Bradford White sales representative Sales 800 523 2931 Fax 215 641 1670 Parts Fax 215 641 2180 Technical Support 800 334 3393 Fax 269 795 1089 Warranty 800 531 2111 Fax 269 795 1089 International Telephone 215 641 9400 Telefax 215 641 9750 BRADFORD W
62. pen a nearby hot water faucet to vent heater for draining Open drain spigot of water heater and allow heater to drain to a point below the inlet connection nipple Close drain spigot and remove hose Disconnect inlet nipple from plumbing system With an appropriate wrench remove inlet nipple dip tube from the water heater Use caution not to damage nipple threads Visually Inspect inlet nipple dip tube Inlet nipple dip tube should be free of cracks and any blockage Hydro jets located near the bottom of the dip tube should be open and free of any blockage Anti siphon hole 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 Upon completion of inspection or subsequent replacement reinstall inlet nipple dip tube into heater Connect nipple to plumbing system close spigot and remove drain hose resume water supply and refill heater with water To resume operation BE SURE TANK IS FULL OF WATER and turn power ON to water heater Anode Inspection and Replacement Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 BRADFORD WHITE Turn power OFF to water heater 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 he
63. r from thermostat Step 3 Disconnect wires from heating element Step 4 Set multi meter to ohms setting Step 5 Touch one probe of multi meter to either screw terminal of heating element and the other on the element flange see illustration 5 There should be no reading on the ohm meter Any reading indicates a grounded element and the element must be replaced Repeat this step for the other screw terminal BRADFORD WHITE CO R PO R ATION WARNING High voltage exposure Be sure power is turned OFF to water heater prior to performing this procedure Meter Probe Element Screw Terminals Illustration 4 Meter Probe Element Flange Illustration 5 Element Screw Terminal 15 16 S SERVICE PROCEDURE RE III Residential Thermostat Testing 2 Single Element Operation Double Element 4 Wire Simultaneous Single Phase Operation Water In Tank Is Cold With Power ON 1 This procedure assumes line voltage ECO and elements are in working order 2 Turn power ON to water heater 3 Set multi meter to Volts A WARNING High voltage exposure Use caution to avoid personal injury during this procedure 12 L1 L5 4 Check across terminals L4 and T2 of thermostat see illustration 6 LH A Rated NOT Recheck
64. r is unusually active an odor may occur at the hot water faucet due to a reaction between the sacrificial anode and impurities in the water If this should happen an alternative anode may be purchased from the supplier that installed this water heater This will minimize the odor while protecting the tank Additionally the water heater should be flushed with appropriate dissolvers to eliminate any bacteria General Information continued IMPORTANT Before proceeding please inspect the water heater and it s components for possible damage DO NOT install any damaged components If damage is evident please contact the supplier where the water heater was purchased or the manufacturer listed on the rating plate for replacement parts INSTALLATION Locating The Water Heater A WARNING Water heaters are heat producing appliances To avoid damage or injury there shall be no materials stored against the water heater and proper care shall be taken to avoid unnecessary contact especially by children with the water heater UNDER NO CIRCUMSTANCES SHALL FLAMMABLE MATERIALS SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER OR ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER This water heater MUST be installed indoors out of the wind and weather This water heater shall NOT be installed in any location where gasoline or flammable vapors are likely to be present unless the installat
65. re to comply with these instructions To comply with NSF requirements this water heater is to be a Sealed to the floor with sealant in a smooth and easily cleanable way or b Installed with an optional leg kit that includes legs and or extensions that provide a minimum clearance of 6 beneath the water heater This water heater has been designed and certified for the purpose of heating potable water The installation and use of this water heater for any purpose other than the heating of potable water may cause damage to the water heater and create a hazardous condition and nullify the warranty A CAUTION Incorrect operation of this appliance may create a hazard to life and property and will nullify the warranty Do not use this appliance if any part has been submerged in water The plumbing professional responsible for the installation of this water heater should be contacted to inspect the appliance and to replace any part of the control system including thermostat which has been submerged in water Make sure that the rating plate on the water heater is referenced for certainty that the correct voltage is being supplied to the water heater A DANGER Do not store or use gasoline or other flammable combustible or corrosive vapors and liquids in the vicinity of this or any other appliance A sacrificial anode is used to extend tank life Removal of this anode for any reason will nullify the warranty In areas where wate
66. s Single PASC ose Cheese te per inda 27 Double Element Non Simultaneous 3 Ph se 29 Double Element Simultaneous 3 Phase 31 Thermostat Removal and Replacement 33 RE V Heating Element Removal and Replacement 34 RE VI Dip Tube and Anode Inspection and Replacement 35 Generic Parts Listu us aces esed tes nte e ee PR a tA eR qaa TE 36 Introduction This service manual is designed to aid service and maintenance professionals on the function proper diagnosis and repair of Bradford White residential electric and light duty commercial electric water heaters The text and illustrations in this manual provide step by step instructions to facilitate proper operation and troubleshooting procedures Contact the Bradford White Technical Support Group immediately if diagnosis can not be made using the methods described in this service manual Multi Meter 1 Deep Well Socket element removal V4 Nut Driver Various Hand Tools Pipe Wrench Channel Locks Flash Light Tools Phillips Head Screw Driver Thermometer Drain Hose Pliers common amp needle nose Wire cutters Wire Strippers S BRADFORD WHITE C O R P O R A T LO N S GENERAL INFORMATION Commonly Used Formulas Amps Watts
67. s BLACK RED 208 240 480 current to flow through the element L WHITE 120 277 1 13 Diatr pO RED 208 240 480 WHITE 120 277 L THERMOSTAT BLACK ELEMENT 3 When the thermostat is satisfied it opens at 1 terminal T2 interrupting current flow through the BLACK RED 208 240 480 element System is now in stand by mode waiting L WHITE 120 277 for the next call for heat Li O L5 22 mO RED 208 240 480 WHITE 120 277 THERMOSTAT BLACK ELEMENT BRADFORD WHITE C O R P O R A T LO N lt SEQUENCE OF OPERATION Jf Non Simultaneous and Simultaneous Operation Double element electric water heaters are designed to operate in a Non Simultaneous or Simultaneous mode Non Simultaneous Mode Allows only one heating element to operate at a time For example when the tank is cold the upper element is energized first heating the top of the tank Only when the upper thermostat is satisfied the upper element is de energized and power is directed to the lower thermostat energizing the lower element and heating the bottom portion of the tank until the lower thermostat is satisfied As hot water is drawn off the tank it is replaced with cold water delivered through the dip tube to the bottom of the tank The bottom of the tank cools the lower thermostat will call for heat energizing the lower element If enough hot water is drawn from the tank the top portion of the tank cools and the upper thermostat wil
68. ss terminal L3 of upper thermostat and Illustration 39 T2 of lower thermostat see illustration 40 A Rated voltage IS present replace lower thermostat Rated voltage NOT present lower thermostat is okay D C lower than rated voltage IS present recheck for grounded lower element see page 15 BLACK BLACK BLACK k s Illustration 40 S BRADFORD WHITE C O R P O R A T LO N 28 SERVICE PROCEDURE RE IV Light Duty Commercial Thermostat Testing E Double Element Non Simultaneous Three Phase Operation A WARNING High voltage exposure Use caution to avoid personal injury during this procedure Water In Tank Is Cold With Power ON 1 This procedure assumes line voltage ECO and Hele Uee Hi elements are in working order E LISE es 1E2456 2 Turn power ON to water heater ju RED YELLOW Li L3 3 Set multi meter to Volts AC Q L4 4 Check across terminals L4 and T2 of upper thermostat see illustration 41 BLACK A Rated voltage NOT present Recheck upper ECO If ECO is okay BLACK replace thermostat T B Rated voltage IS present proceed to next step 5 Check across element terminals see illu
69. stats to the highest setting E z ign m 5 3 Turn power ON to water heater 4 Set multi meter to Volts AC BLACK BLUE 5 Check across terminals L4 and T2 of BLACK upper thermostat see illustration 47 H A Rated voltage NOT present Recheck upper EC see page 14 If ECO is okay replace upper thermostat B Rated voltage IS present proceed to next step 6 Check across upper element terminals YEL see illustration 48 A Rated voltage NOT present check wire connections from thermostat to upper element Illustration 47 Illustration 48 B Rated voltage IS present Repeat element testing see page 15 7 Check across terminal L4 of upper thermostat and T2 of lower thermostat see illustration 49 asic Hi A Rated voltage NOT present ee ku Check ECO see page 14 amp wire RED YELLOW RED YELLOW connections at upper amp lower Cf p Cp Bee thermostats If okay replace lower thermostat 14 Rated voltage IS present BLACK BLUE BLACK BLUE proceed to next step
70. stration 42 A Rated voltage NOT present T2 check wire connections from Is BLUE thermostat to element YELLOW YELLOW B Rated voltage IS present Repeat element testing _ see page 15 Illustration 41 Illustration 42 Tank Does Not Deliver Enough Hot Water 1 This procedure assumes line voltage ECO and elements are in LIL2L3 GI M working order ee RED YELLOW 2 Turn power ON to water heater and set multi meter to Volts AC Loaf B 3 Adjust temperature setting of upper amp lower thermostat to the Highest setting Water temperature in tank must be below thermostat setting for this test BLACK 4 See illustration 41 above Check voltage across terminals L4 amp T2 of upper thermostat BLACK A Rated voltage IS present okay upper thermostat is calling for heat Go to step 5 below B Rated voltage NOT present replace upper thermostat 5 a temperature setting of upper thermostat to the minimum setting Water temperature in tank must be above thermostat setting for this test m e BLUE 6 Check voltage across terminals L3 amp T4 of upper YELLOW thermostat see illustration 43 A Rated voltage NOT present replace upper thermostat B Rated voltage IS present upper thermostat is okay Go to step 7 on next
71. t testing procedures assume items 2 and 3 above are in working order 10 Check dip tube replace as needed A Check fuses or circuit breakers in service No Powerto heater panel 3 See Service Procedure nd 2 Check all wire connections RE II Page 15 2 Loose wire connections 3 Incparative Upper heating elemeit 3 Check heating element s Replace as 4 See Service Procedure No Hot Water upp 9 needed RE III Page 16 4 Inoperative upper thermostat h 4 Check thermostat s operation Replace as 5 See Service Procedure 5 Open ECO needed RE I Page 14 5 Check ECO Reset or replace thermostat s as needed 1 Check heating element s replace as 1 Inoperative lower heating element needed 2 Thermostat s set to low 2 Increase thermostat setting 1 See Service Procedure 3 Inoperative thermostat s 3 Check thermostat s replace as needed RE II Page 15 4 Loose wire connection 4 Check all wire connection 3 See Service Procedure Sediment or lime build up on element s Remove heating element s and check for Page 16 Not Enough Hot s sedi lime build 5 R heating el d check f RE lll Page 16 Water 6 High demand period lime build up 5 See Service Procedure 7 Undersized heater 6 Reduce demand RE VI Page 34 8 Very cold inlet water to heater 7 Replace with larger heater 10 See Service Procedure 9 Plumbing connections reversed 8 Temper water to heat
72. ted voltage NOT present Recheck ECO see page 14 If ECO is okay replace thermostat Rated voltage 15 present proceed to next step 5 Check across element terminals see illustration 30 A Rated voltage NOT present check wire connections from thermostat to element Rated voltage 15 present Repeat element testing see page 15 Illustration 29 Tank Does Not Deliver Enough Hot Water 1 This procedure assumes line voltage ECO and elements are in working order 2 Turn power ON to water heater and set multi meter to Volts AC 3 Adjust temperature setting of upper amp lower thermostat to the Highest setting Water temperature in tank must be below thermostat setting for this test 4 See illustration 29 above Check voltage across terminals L4 amp T2 of upper thermostat A Rated voltage IS present okay upper thermostat is calling for heat Go to step 5 below B Rated voltage NOT present replace upper thermostat 5 Adjust temperature setting of upper thermostat to the minimum eer et temperature in tank must be above thermostat setting or this test 6 Check voltage across terminals L3 amp T4 of upper thermostat see illustration 31 A Rated voltage NOT present replace upper thermostat B Rated voltage IS present upper thermostat is okay Go to step 7 on next page BRADFORD WHITE CO R PO R ATION
73. ulted Note This water heater is equipped with an energy cut out device to prevent overheating Should overheating occur turn off the electrical supply to the water heater and contact a qualified service technician MAINTENANCE IMPORTANT The water heater should be inspected at a minimum of annually by a qualified service technician for damaged components DO NOT operate this water heater if any part is found damaged Shut off the electric power whenever the water supply to the water heater is off Shut off the electric power and water supply drain the heater completely to prevent freezing whenever the building is left unoccupied during the cold weather months In order to insure efficient operation and long tank life drain the water heater at least once a month through the drain valve until the water runs clear Failure to do this may result in noisy operation and lime and sediment buildup in the bottom of the tank Check the temperature pressure relief valve to insure that the valve has not become encrusted with lime Lift the lever at the top of the valve several times until the valve seats properly without leaking and operates freely A WARNING When lifting lever of temperature pressure relief valve hot water will be released under pressure Be certain that any released water does not result in bodily injury or property damage The magnesium anode rod should be inspected periodically and replaced when necessary to prolon
74. und prior to thermostat testing LTE2IL5 6 H Water Temperature In Tank Is Above Thermostat Setting 1 This procedure assumes line voltage ECO and elements are in working order 2 Adjust upper and lower thermostat to the lowest setting 3 Turn power ON to water heater and Set multi meter to Volts AC 4 See illustration 32 above Check across terminal L3 of upper thermostat amp T2 of lower thermostat A Rated voltage IS present replace lower thermostat B Rated voltage NOT present okay go to step 5 below C Lower than rated voltage IS present recheck for grounded lower element see page 15 T2 5 Check across terminal L4 amp T2 of upper thermostat see illustration 34 BLACK A Rated voltage IS present replace upper thermostat L B Rated voltage NOT present upper thermostat is okay C lower than rated voltage IS present recheck for grounded upper Illustration 34 element see page 15 S BRADFORD WHITE C O R P O R A T LO N 26 SERVICE PROCEDURE RE IV Light Duty Commercial Thermostat Testing J Double Element Simultaneous Single Phase A WARNING Operation High voltage exposure Use caution to avoid personal injury during this procedure Water In Tank Is Cold Or Not Enough Hot 13761 Water With Power
75. w element clockwise into tank Tighten element using 1 72 deep well socket or appropriate wrench Do over tighten over tightening may damage element gasket Reconnect wires to element be sure wires are snug and corrosion free Do not over tighten doing so may damage terminal block Resume water supply to heater be sure tank is full of water and check for leaks Re install plastic thermostat protector Re install insulation and access cover To resume operation BE SURE TANK IS FULL OF WATER and restore power to water heater Verify proper heater operation Element Rating Example 4500 Watt 240 Volt Date Code Element Flange Element Gasket Seated Flat Against Element Flange Without Rolls or Gaps w C Block 0642 F 4500W 240V RC02404524 Manufacturer Identification S BRADFORD WHITE C O R P O R A T LO N SERVICE PROCEDURE Dip Tube and Anode Inspection and Replacement J 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 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Turn power OFF to water heater Turn off cold water supply to heater Connect hose to drain spigot of water heater and route to an open drain O
76. will be connected together likewise black and yellow wires will be connected together Sequence of Operation Double Element Simultaneous Operation Single Phase 4 wire service installation 1 H Circuit two 2 T Circuit two 1 Line voltage from circuit one is applied across terminals L1 amp L3 of the lower uU 12 YELLOW BLUE L2 YELLOW BLUE thermostat Likewise line voltage from circuit two is applied across terminals L1 8 Ho Thermostat closed Ho L3 of the upper thermostat ECO in both i a L4 208 240 480 208 240 480 upper and lower thermostat is closed so WHITE 120 277 39 glue WHITE 120 277 JO there is voltage at terminal L4 of each m ond S BRADFORD WHITE C O R P O R A T LO N SEQUENCE OF OPERATION J Sequence of Operation Double Element Non Simultaneous Operation 3 Phase BRADFORD WHITE CO R PO R ATION Line voltage is applied across terminals L1 amp L3 of upper thermostat Likewise Line voltage is applied to terminal L3 of lower thermostat ECO in both upper amp lower thermostat is closed so there is voltage at terminal L4 of both thermostats and to one side of both upper amp lower elements Tank is cold therefore both thermostats are closed at terminal T2 calling for heat The circuit is complete through the upper thermostat only allowing current to flow through the upper element When the upper th
77. wing tables show the recommended fuse size for the maximum wattage supplied to the water heater The maximum wattage and rate voltage are shown on the water heater data plate BRANCH CIRCUIT SIZING GUIDE Watt Recommended over Copper wire size AWG Approximate Load current protection rating Based on N E C Table Recovery 310 16 Gal Hr 100 F Rise 1500 15 15 15 12 14 14 6 1 15 10 15 10 15 8 3500 20 2 ZEEE 4500 30 25 10 10 18 4 5000 30 30 5500 ___ 35 30 10 25 6000 35 30 8 248 9000 50 45 6 39 10000 60 55 1100 _ 30 4 451 Increasing the wattage and or voltage from the factory original equipment can require changes to the water heater and or the FOR YOUR SAFETY electric service Unauthorized modification of the water heater may create a hazard to life and property and will nullify the warranty Contact your dealer or utility company before making any changes SINGLE PHASE FULL LOAD CURRENT DRAW NON SIMULTANEOUS OPERATION Element 120V 208V 240V 277M 380V 415V 480V Wattage 1500 1500 12 5 7 2 6 3 5 4 3 9 3 6 3 1 2000 2000 16 7 9 6 8 3 7 2 5 3 4 8 4 2 2500 2500 20 8 12 0 10 4 9 0 6 6 6 0 5 2 3000 3000 25 0 14 4 12 5 10 8 7 9 7 2 6 3 3500 3500 N A 16 8 14 6 12 6 9 2 8 4 7 3 4000 4000 N A 19 2 16 7 14 4 10 5 9 6 8 3 4500 4500 N A 21 6 18 8 16 2 11 8 10 8 9 4 5000 5000 N
78. y during this procedure L1 L3 L4 T2 BLACK 1 RED Illustration 22 L1 L2 L3 YELLOW BLUE Un 14 L1 L3 LA m BLACK Illustration 23 S BRADFORD WHITE C O R P O R A T LO N N SERVICE PROCEDURE RE III Residential Thermostat Testing J Double Element Non Simultaneous Single Phase Off Peak Operation WARNING High voltage exposure Use caution to avoid personal injury during this procedure Water In Tank Is Cold With Power ON 1 This procedure assumes line voltage Qu L2 ECO and elements are in working order 2 Turn power ON to water heater RED YELLOW 3 Set multi meter to Volts AC tal eh 4 Check across terminals L4 and T2 of upper thermostat see illustration 24 A Rated voltage NOT present Recheck ECO see page 14 BLUE If ECO is okay replace thermostat a B Rated voltage IS present proceed to next step BLACK 5 RED 5 Check across element terminals 2 see illustration 25 ul A Rated voltage NOT present check wire connections from thermostat to element BLACK B Rated voltage IS present ae Rep

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