Bock Water heaters 20PP User's Manual
Contents
1. CONNECT WATER PIPING Hot water outlet HOT is on tank top Cold water inlet is on right front bottom of 33E and 40E On all other models cold water inlet is on tank top Connect the water piping being careful not to apply heat to the heater nipples Install dielectric unions and shut off valves on both hot and cold water lines The 40E and all C models example 32EC 51PPC have a 1 NPT tapping locat ed on the front left side of the tank This is an alternate outlet for use with combined appliance applications If this fitting is not used plug it with a fitting suitable for potable water A 1 NPT fitting is also located behind the drain valve on the 40E and all C models This is for use as an alternate inlet or a combined appliance return Your heater is shipped with a reducer in this location to mount the drain valve NOTE INDEX MARK ON INLET BUSING MUST The 33E and 40E models are equipped with a nun brass inlet bushing installed in the tank Heat FITTINGS ROTATING BUSHING COULD DRASTI 9 3 equipped with this bushing are marked next CALLY REDUCE PERFORMANCE to the inlet by the decal shown on the left The purpose of this bushing is to help keep the tank INDEX MARK bottom free of sediment by aiding tank flushing This bushing must be located as shown on the ere decal to function properly Do not allow the bush ing to rotate out of position when tightening the inlet fittings In install2. OR FITTINGS UNDER THE FLOOR FIGURE 4 MAXIMUM LIFT amp HORIZONTAL RUN 1 Pipe Single Stage Horizontal 2 Pipe Two Stage Horizontal System Pump Run System Pump Run 3 8 O D 1 2 O D 3 8 O D 1 2 O D Lift Tube Tube Lift Tube Tube 0 65 100 0 75 100 4 45 100 4 64 100 7 31 100 7 55 100 8 16 64 10 47 100 Your log or one similar to this must be filled out as follows Date Time Test person s name Set temp F Outlet temp OF PLACE THE 1 Fill the tank with water opening a hot water faucet to allow trapped air to WATER escape from the heater Open the cold water inlet valve Shut off each faucet as SYSTEM IN it delivers water that is free of air Inspect for leaks Never operate an empty or OPERATION partially full heater 2 Be sure the oil tank is filled with 1 or 2 heating oil Remove the transformer hold down screw and swing the transformer back open on the hinge Rotate the blower wheel a few times to loosen the pump shaft Swing the transformer closed Warning Handhole and fasten cover may loosen during shipping she check for tightness 3 Bleed air from the oil line by opening the bleed valve on the fuel pump Attach before putting heater a small plastic tube to the bleed valve fitting on the pump and run to a gallon in operation container Turn on the electricity and set the thermostat so the burner motor runs The
3. R35 3 C8511223 1 10 X80A 40F5 C8512181 0 90 X 60B 50ES RIELLO R35 3 C8511222 0 85 X 60B 40F5 C8512181 0 90 X 60B 51PP 51PPC RIELLO R35 3 C8511223 1 10 X80A 40F5 C8512181 0 90 X 60B 120E RIELLO R35 3 C8511223 1 00 X 60B 40F5 C8512181 0 90 X 60B 71E RIELLO R35 5 C8512220 1 00 X 60B 40F5 C8512182 1 00 X 60B 20e 20pp CARLIN EZ LF 997843CT 0 40 X 60A 32E 32EC 33E CARLIN EZ 1 96828 32E 0 75 X 70A 32PP 32PPC CARLIN EZ 1 96828 32PP C 0 75 X 70A 51 51506 CARLIN EZ 1 96828 51E 1 10 X 70A 50ES CARLIN EZ 1 96828 50ES 1 00 X 70A 51PP 51PPC CARLIN EZ 1 96828 51PP C 1 10 X 70A lE CARLIN EZ 1 96828 71E 1 25 X 60A Bock Water Heaters Inc 110 South Dickinson Street P O Box 8632 Madison WI 53708 8632 Phone 608 257 2225 Fax 608 257 5304 www bockwaterheaters com Form 23420 Rev 4 3 2007
4. SOES SOESC 51E 518 0 51PP SIPPG 71E and 120E Bock Water Heaters Inc a division of Bock Corporation a Wisconsin corporation at 110 South Dickinson Street Madison WI 53703 Company warrants to the owner the tank of this water heater will not leak due to defective materials or workmanship for FIVE years from the date of original installation If the water heater is installed in other than a single family dwelling this warranty is limited to THREE years from the date of original installation The company also warrants that no other part of this water heater will fail due to a defect in material or workmanship for one year The company s responsibility is to repair or replace at our option with the pre vailing comparable Bock model any part of the equipment sold by the Company which proves to be defective in material or workmanship including the tank during the warranty period when installed in accordance with applicable codes and ordinances and operated and maintained in accordance with our instruc tions subject to the conditions and exceptions indicated below Our liability in the event of leakage or other malfunction is strictly limited to repair or replacement of the defective heater or part as provided herein We are not responsible hereun der for incidental property damage or personal injury consequential costs or damage Equipment that is repaired or replaced will carry the unexpired portion of the original eq
5. Some states do not allow limitations on how long an implied warranty lasts or for the exclusion of incidental or consequential damages so the above limitations or exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state The attached warranty registration card should be returned within 30 thirty days of the date of installation otherwise the date of manufacture will be recorded as the date of installation for the purpose of this warranty Contact your nearest Bock distributor or Bock Water Heaters Inc 110 South Dickinson Street Madison WI 53703 Phone 608 257 2225 Fax 608 257 5304 BOCK BURNER MODEL MAX MODEL MAX MODEL OIL MFR OEM INPUT OEM INPUT 32E 32EC 33E WAYNE MSR 371 001B 0 75 X 80A 32PP 32PPC WAYNE HS 371 009HS 0 75 X 80A 40E WAYNE MSR 371 030B 0 90 X 70A 5IE 51EC WAYNE MSR 371 003B 1 10 X 80A 50ES 120E WAYNE MSR 371 029B 1 10 X 80A 51PP 51PPC WAYNE HS 371 011HS 1 10 X 80A TIE WAYNE MSR 371 017B 1 25 X 70B 32E 32EC 33E BECKETT AF BK3 0 75 X 80A 32PP 32PPC BECKETT AF BK3 0 75 X 80A 40E BECKETT AF BK4 0 85 X 80A SilE SEC BECKETT AF BK5 1 00 X 80A 50ES 120E BECKETT AF BK5 1 00 X 80A 51PP 51PPC BECKETT AF BK5 1 00 X 80A alle BECKETT AF BK7 1 25 X 80B 32E 32EC 33E RIELLO R35 3 C8511221 0 60X60B 40F5 C8512180 0 60 X 60B 32PP 32PPC RIELLO R35 3 C8511221 0 60 X60B 40F5 C8512180 0 60 X 60B 51E 51EC RIELLO
6. WARRANTY ON THIS WATER HEATER MULTIPLE BURNER INSTALLATION SELECT THE RIGHT LOCATION Check for exhaust fans in the heater room or adja cent areas which draw combustion air away from heater THE HEATER MUST HAVE COMBUS TION AIR TO OPERATE THIS MANUAL HAS BEEN PREPARED TO ACQUAINT YOU WITH THE INSTAL LATION OPERATION AND MAINTENANCE OF YOUR WATER HEATER AND TO PROVIDE IMPORTANT SAFETY INFORMATION Read all instructions thoroughly before attempting installation or operation of the water heater Keep these and all component instructions for future reference The manufacturer of this water heater will not be liable for any damages caused by failure to comply with the installation and operating instructions outlined on the following pages These instructions are a guide for the correct installation of the water heater If the installer lacks the necessary skills or has difficulty following the directions do not proceed but get help from a qualified person for that part of the installation that is not understood Local plumbing and electrical codes must be followed in the installation of this water heater In the absence of a local code use the UNIFORM PLUMBING CODE and the NFPA Code Local codes may supersede instructions in this instal lation manual When two or more burners are used each unit should have a separate supply line to the fuel pump to prevent nuisance lockouts caused by one or both pumps starving for oi
7. bars and ignitor terminals 4 Change the fuel oil filter and have the oil tank checked for sediment Clean the tank if necessary 5 Keep the oil tank full to prevent water vapor from collecting inside the tank especially during the summer 6 Check the smoke pipe and chimney Clean and repair if necessary 7 EVERY SIX to 12 MONTHS Drain water from the heater tank and inspect for sediment or lime accumulation Flush out if necessary If lime has accumulated remove with a commercial compound for dissolving lime or by scraping through the hand hole opening if supplied Check water softening equipment if lime is found in the tank DO NOT ATTEMPT TO HEAT HARD WATER See mainte nance label on heater 8 Change the magnesium anode rods every six to 12 months or when they are reduced to 3 8 diameter see maintenance label on heater We recom mend the installer use PermaBond LH 050 Teflon tape should not be used when installing magnesium or aluminum anode rods 9 Open the relief valve test lever to flush out the tank Make sure it reseats itself 10 If the heater is to be shut off in cold weather drain the tank to prevent freezing SERVICE 1 Check the fuel supply electrical wiring and fuses and make sure temperature control is calling for heat 2 If the motor runs but there is no flame remove the electrode assembly clean readjust to the burner manufacturer s specifications check the electrode porce lain for crac
8. may cause pressure to build up in the heater and cause tank failure If the heater is installed in a closed system or if backflow pre venters and pressure regulators are installed add an expansion tank Do not try to heat hard water Install a water softener if the heater is being used in a hard water area water hardness more than 7 grains An approved temperature and pressure T amp P relief valve is factory installed in the opening provided in the upper right hand side of the heater Pipe the T amp P to within 6 of the floor or to a floor drain with a free flowing drain pipe Do not install a check valve in the cold water line Using L or A type venting connect the heater to the chimney Use the same size smoke pipe as the heater flue pipe on models 20e 20pp 32E 32PP and 33E you may use 4 with a reducer if needed WARNING On Models 40E 50ES 50ESC 51E 51EC 51PP 51PPC 71E and 120E do not reduce the smoke pipe diameter Run a separate smoke pipe from the water heater to the chimney wherever possible If it is necessary to tee into an existing smoke pipe be sure the connector being teed into is large enough to accommodate the products of combustion of all units attached to it When teeing into another connector run in at 45 angle see Figure 1 Install a draft regulator control only if necessary Overfire draft should not be positive Stack draft should be 02 W C minimum to 05 W C maximum CO2 shou
9. NANCE INSTRUCTIONS BOCK RESIDENTIAL OIL FIRED WATER HEATERS Model numbers 20e 20pp 32E 32EC 32PP 32PPC 33E 33PP 40E 40PP 50ES 50ESC 51E 51EC 51PP 51PPC 71E 120E WARNING Hotter water increases the risk of scald injury Be fore changing the temperature setting read the instruction manual Temperatures at which injury oc curs vary with the individual s age and length of exposure The slower reaction times of children elderly and physically or mentally impaired persons increases the scalding hazard to them It is recommended lower water temperatures be used where these situations exist Households with small children or invalids may re quire a temperature setting less than 120 F to prevent accidental contact with hot water To lower water temperature use point of use tem perature limiting devices WARNING Flammable vapors may be drawn to this water heat er from other areas of the structure by air currents Do not store or use any flammable liquids in the vicinity of this heater WARNING Water heater blankets may restrict air flow to the heater and cause fire asphyxiation personal injury or death Bock Water Heaters Inc 110 South Dickinson Street P O Box 8632 Madison WI 53708 8632 Phone 608 257 2225 e Fax 608 257 5304 www bockwaterheaters com CONSUMER RESPONSIBILITIES FAILURE TO FOLLOW THESE INSTRUCTIONS OR ALL APPLICABLE BUILDING CODES AND REGULATIONS VOIDS THE
10. NS TOTAL WARRANTY COMMITMENT REGISTRATION CARD TO MAKE A CLAIM CHART A UL LISTED BURNERS lt The owner will pay all labor charges for the removal and installation of such parts including the tank Any replacement water heater furnished under this warranty shall remain in warranty only for the unexpired portion of the original warranty The owner will have annual inspections of the anode rods Bock Water Heaters Inc requires paid receipts to show maintenance of anodes on glass lined tank claims This warranty will not apply to tanks or parts subject to misuse abuse neglect alteration accident excessive temperature excessive pressure lime silt or sed iment accumulation corrosive atmosphere the removal of magnesium anode rods noise odor rusty water or the installation of an insulation blanket installa tion outside of the United States excluding Canada or on which the serial numbers have been altered The warranty also does not apply when the water heater is installed without a new temperature and pressure relief valve and is not installed in accordance with local codes and ordinances We will not assume nor authorize any person to assume for us any other liability in connection with the sale or operation of Bock Water Heaters Inc Any implied warranties including merchantability or fitness for a particular application imposed on the sale of this heater under laws of the state of sale are limited to one year
11. TO THE INSTALLER Please attach these in structions next to the water heater TO THE CONSUMER Read these and all com ponent instructions Please keep for future reference Please re member to return the registration card Waranty registration card amp parts list included WARNING Improper installation adjustment alteration service or maintenance can cause serious injury or prop erty damage Refer to this manual For assistance or additional information consult a qualified installer or service agency WARNING If the information in these instructions is not fol lowed exactly fire or explosion may result and can cause property damage personal injury or death WARNING Follow minimum combustible clearance as noted on water heater label Do not install on combustible flooring see Figure 2 Page 3 Install in accor dance with all local codes In the absence of local codes refer to NFPA 31 or ANSI 221 10 1 CAUTION The recommended temperature for normal residen tial use is 120 F The dial on the aquastat does not always reflect the outcoming water temperature which could occasionally exceed 120 F The varia tion in outcoming temperature could be based on factors including but not limited to usage patterns and type of installation Test your water at the tap nearest to the water heater See page 5 for mea suring the outcoming water temperature INSTALLATION OPERATION amp MAINTE
12. ations requiring high flow INLET BUSHING rates contact the factory The drain valve fitting may be used as an alternate cold water inlet on heaters equipped with a dip tube as shown in Figure 3 By plumbing a T into the drain fitting the cold water inlet can be relocated to this point The dip tube must be removed and its fitting plugged Figure 3 also shows a copper loop heat trap installed on the hot water outlet to reduce standby losses FIGURE 2 WATER HEATER 24 GAUGE SHEET METAL NN TiN ap 14 FI ERFRAAA 500 PAPER OF SIMILAN P2SUILATING MATE MAL Note When converting to this configu a GONCAETE BLOCK FIGURE 3 HOT OUT ration on an existing heater visually inspect the heater and make certain it does not have scale buildup on the bottom of the tank Scale can restrict the flow of water into the tank CAUTION Scalding injury and or water damage can occur from either the manual lifting of the lever or the normal operation of the T amp P valve if it is not piped to a proper drain If the valve fails to flow water or reseat call a plumber NIPPLE TEE amp DAAIN VALVE CONNECT TO CHIMNEY MOUNT THE OIL BURNER CONNECT THE ELECTRICITY CONNECT THE OIL LINE WARNING WHEN YOU INSTALL THE BYPASS PLUG YOU MUST RUN A TWO LINE SYSTEM Inspect the incoming water line for check valves or water pressure reducing valves Any type of check valve
13. h attached to heater in field See Figure 1 Gravity System The oil burner is normally equipped with a single stage pump equipped for one line gravity flow Use 1 2 O D soft copper tubing and attach with flared fittings DO NOT USE COMPRESSION FITTINGS Install the shut off valve and oil filter in the oil line Follow the pump manufacturer s instructions attached to the pump Lift System The burner should be ordered with a 2 stage pump Run a 2 line system suction and return lines Install the bypass plug according to the instructions attached to pump plug is in a bag with an instruction sheet For any horizontal run exceeding the maximum length specified in Figure 4 or any lift of more than 10 feet a booster pump must be used Booster pumps may be obtained from Sun Tec Hydraulics Rockford Illinois Booster pumps must be installed as close to the oil supply tank as possible Suction and return lines should be the same diameter and both go within 6 of the bottom of the tank The return line should stop slightly above the suction line Use a minimum of fittings Make bends in the tubing with as large a radius as possible DO NOT USE COM PRESSION FITTINGS Caution must be used in the final connection to the burner so as not to strain the fuel unit Before attaching the tubing to the burner form a coil in the tubing to minimize any vibration Bury the oil lines in the floor for quiet operation making sure there are NO CONNECTIONS
14. heater will not ignite when the bleed valve is open Bleed the line until the oil is completely clear not milky or opaque The oil must be transparent and free of air bubbles and froth To keep the burner control from locking out while bleeding the pump attach a jumper between the flame detector terminals after starting the burner Remove the jumper when finished Shut the bleed valve and the burner will ignite Remove the plastic tubing Set the pump pressure to 100 PSI for Wayne Carlin and Beckett burners and 150 PSI for Riello burners 4 Adjust the burner combustion air in accordance with the burner manufacturer s instructions Using combustion instruments check the C02 and smoke The C02 should be at least 10 1 2 minimum with O to trace smoke on the Bacharach scale MEASURING THE OUTCOMING WATER TEMPERATURE MAINTENANCE Have the oil burner serviced once each year by a qualified oil burner service person Service should comply with the burner manufac turer s recommenda tions and include 5 While the burner is operating disconnect one of the yellow cad cell wires Check to see that the burner control locks out in the time specified on the control Reattach the wire and reset the control The burner should restart Note You may have to wait a minute before resetting the control 6 The thermostat is factory set at 120 F for residential use See caution on page 1 regarding temperature variations It is the responsibili
15. ks and replace if necessary Check the transformer to see if it is pro ducing a strong spark Use extreme CAUTION The transformer has a 10 000 volt output Check that the coupling between the motor and pump shaft is not slipping Check the set screw on the blower wheel for tightness Clean or replace the nozzle with the correct size and spray angle see Chart A page 11 3 Bleed the pump and check for clear air free oil If the oil is milky or frothy check the line for air leaks at fittings Tighten all fittings again Check the filter gaskets and make sure cartridge is clean 4 If the burner motor does not run check the motor thermal overload button red button on end of motor Reset the primary control by pushing the reset button on the control If the burner motor still does not run after resetting the control turn off the electricity and replace the flame detector with the same make located in the burner compartment Reset the primary control If the motor still does not run replace the control 5 If the burner ignites and runs a short time 30 40 seconds then goes out on safety replace the flame detector If the burner still runs only a short time replace the control 6 If there is a smell of oil or combustion products remove and clean the electrode assembly see No 2 above Check the draft in the stack above the heater Stack draft pull in should be 02 W C minimum to 05 W C maximum Check for exhaust fa
16. l If this is not possible the use of a priority control is recommended Check new equipment to see if all components are in good condition The water heater and oil burner may be shipped as separate units The aquastat and immersion well may be packed with the oil burner The new water heater requires fuel 1 or 2 heating oil electricity and should be close to the chimney and water supply Locate the heater near a floor drain if pos sible for easy maintenance and protection if trouble should occur Allow ample space around the heater for servicing see combustible clearance warning page 1 Adequate air for combustion must be available NOTE Locate the heater so it is not subject to physical damage by moving vehicles or possible flooding FIGURE 1 WHEN THE WATER HEATER IS USED IN A COM BINED APPLIANCE APPLICATION PLEASE CONTACT THE LOCAL DISTRIBUTOR OR THE FAC TORY FOR INSTALLATION INSTRUCTIONS ON SYSTEM PLUS Sac DO NOT INSTALL THE WATER HEATER ON COMBUS TIBLE FLOORING see Figure 2 Refer to NFPA 31 or contact Bock Water Heaters with questions concern ing proper flooring materials Minimum clearance to combustible construction is SIDES 6 BACK 6 FRONT 24 The installation of this water heater must conform with local codes and ordinances In the absence of local codes the instal lation must comply with the National Fire Protection Association NFPA 31 Code
17. ld be a minimum of 11 If a draft control is installed on the chimney another one on the heater is not needed The oil burner is equipped with a primary relay An aquastat with immersion well is packed with the burner The thermostat is factory set at 120 F for residen tial use see caution on page 1 regarding temperature variations Install the immersion well with the aquastat and check the bulb length see Burner amp Controls section page 10 Remove the cardboard core from the burner opening Mount the burner on stud bolts and place the gasket supplied between the burner flange and the heater Secure the burner to the heater with 1 4 20 nuts supplied Open the inspection door on the heater and check the burner tube with a mirror before firing to be sure the opening is not blocked see Maintenance and Service sections on pages 6 and 7 for troubleshooting All wiring must comply with applicable codes and ordinances The primary relay is wired to the burner at the factory Install the aquastat well in the 3 4 tapping at the front of the heater Be sure the sensing bulb is inserted all the way into the well For Honeywell aquastats tighten the screw on top of the aquastat to secure the control to the well For Carlin EZ Temp aquastats refer to the pre packaged installation guide for proper set up procedure Refer to drawings for correct mod els Connect the power supply to the aquastat and run through a fused discon nect switc
18. ns in the heater room or adjacent areas which draw com bustion air away from heater THE HEATER MUST HAVE COMBUSTION AIR TO OPERATE For more information contact your installer the nearest Bock distributor or write call or fax BOCK WATER HEATERS INC 110 South Dickinson Street Madison WI 53703 Phone 608 257 2225 Fax 608 257 5304 WIRING FIGURE 5 Carlin burner w Carlin EZ Temp FIGURE 6 Beckett or Wayne burner w Carlin EZ Temp For Models 32 33 40 50 51 71 120E For Models 32 33 40 50 51 71 120E see burner manufacturer s instructions for 20e 60200 primary w three wire harness EZ Tera a an bo GE lang carina wining W ard fox conau are spoke com pita ey with The oriy E Maki wirkeg au rod in power supply In TO BURNER Er Enn bar ALS ANE HT FIGURE 7 Honeywell L4103A 1142 FIGURE 8 Honeywell L4006A w L8080B For Models 32 33 40 51 71E For Models 50 120E FIGURE 7 NOTES FIGURE 4 NOTES Set point 120 ioh limit 1909 e Aquastat WHITE E OPRANE 120 set point 15 differential Lone MUTE ARE LR FAON UA TRAMSPORGER Mii VARY ri E BURNER COMPONENTS ITEM DESCRIPTION 1 O 0 o gt 20 21 22 23 Cold Water Inlet Dip Tube N A 33E amp 40E Plastic Cap Magnesium Anode Rod aluminum avaliable Name Plate Ra
19. ting Label Immersion Well amp Aquastat Drain Valve Mounting Bracket Gasket Burner Mounting Bracket part of jacket assembly on Models 20e 32E through 51 Series sold separately on 71E and 120E Bottom Pan Combustion Chamber Sleeve Combustion Chamber Inspection Block Inspection Door Inspection Door Gasket Heater Jacket Tank Hot Out Nipple 51 Series 1 All others 3 4 50ES N A Top Pan Burner Primary Relay Cad Cell BURNER COMPONENTS LIST ITEM DESCRIPTION ITEM DESCRIPTION 1 Motor 12 Oil Line Assembly 2 Blower Wheel 13 Fuel Unit 3 Burner Housing 14 Elbow 4 Motor Cord Cover 15 Gun Assembly 5 J Box 16 Air Tube 6 Transformer 17 Flange 7 Housing Cover 18 Air Cone 8 Slot Cover Plate 19 Gasket 9 Inner Air Band 20 Nozzle not shown 10 Outer Air Band 21 Relay 11 Coupling not shown 22 Cad Cell OIL FIRED WATER HEATER BOCK TANK ASSEMBLY PARTS LIST When ordering repair parts always give the part name model number size and serial number Handhole cover plate and gasket for 50ES only not shown 29 WARRANTY COVERAGE COMPANY S RESPONSIBILITY BURNER amp CONTROLS 20e 32E 33E 40E 51E 71E residential applications 50ES 120E amp commercial applications OWNER S RESPONSIBILITY Oe LIMITED WARRANTY This warranty covers Bock Water Heater models 20e 20pp 32E 32EC 32PP 32 33E 33PP 40E 40
20. ty of the homeowner and installer to verify that the installer follows the recommended quantitative testing for measuring the outcoming water temperature To make sure that the system works properly after installation and in the future it is recommended that the heater s performance be measured and monitored Run water out of the tap near est the heater until it comes out warm Using a calibrated thermometer take a measurement If the water is not at a suitable temperature for the installation have a qualified service person adjust the aquastat Contact Bock for further information on the thermometer if needed WARNING Hydrogen gas can be produced in a hot water system served by a 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 open the hot water faucet at the highest location in the house for several minutes before using any electrical appliance connected to the hot water system If hydrogen is present there may be an unusual sound such as air escaping through the pipe as the water begins to flow Do not smoke or allow an open flame near the faucet at the time it is open 1 Oil the burner motor 5 10 drops with 10 SAE motor oil if applicable 2 Install a new burner nozzle of the correct rate and angle See Chart A page 11 3 Clean and adjust the electrodes and inspect for cracks in the porcelain Check for corrosion on the buss
21. uipment warranty Any burner and or controls used on a Bock water heater other than the ones rec ommended by Bock Water Heaters Inc and listed by Underwriters Laboratories Inc will void the warranty Bock Water Heaters Inc specifies burners and controls on the basis of safety reliability and performance Only the following burners and controls have been tested and approved by Bock Water Heaters Inc and Underwriters Laboratories Inc to meet the stringent standards required by both Refer to chart A page 11 Honeywell L4103A combination aquastat and high limit controller One well is needed Part 138134E See figure 7 White Rodgers 11C30 11 combination aquastat and high limit controller One well is needed Part F89 0214 Carlin EZ Temp 90000B Part 21585 One well is needed Part 21587 See Figure 5 6 Honeywell L4006A aquastat and L4080B limit control Two wells are need ed Part 123871B Not to be used on 32E series See Figure 8 Carlin EZ Temp 90000C Part 21582 Two wells are needed Part 21587 See Figure 5 6 Carlin EZ Temp 90300B Part 21589 Two wells are needed Part 21587 See Figure 5 6 At the company s request the owner is to return to the factory at Madison WI any part including the tank defective in material or workmanship and pay all transportation charges for such return parts and for replacement parts sent from the factory to the owner EXCEPTIO
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