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Hubbell Electric Heater Company B manual

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Table of contents for the manual

  • Page 1

    OPERATING AND MAINTENANCE MANUAL FOR ELECTRIC BOOSTER HEATER ELECTRIC HEATER COMPANY BASE MODEL “ B ”[...]

  • Page 2

    2 HUBBELL ELECTRIC HEATER COMPANY P.O. BOX 288 STRATFORD, CT 06615 PHONE: (203) 378-2659 FAX: (203) 378-3593 INTERNET: http://www.hubbellheaters.com/ -- IMPORTANT -- Always reference the f ull model num ber and serial number when calling the factory. WARNING / CAUTION 1. Tank is to be complete ly fille d with water and a ll air is to be vente d bef[...]

  • Page 3

    3 TABLE OF CONTENTS SECTION TITLE PAG E # I GENERAL DESCRI P TI ON AND CONSTRUCTION 5 II INSTAL LATI ON 9 III S C H E D U LE D M A IN TE NANC E AND OPERATION 15 I V TROUBL ES HOOTI NG 17 V S E R V I C I N G & R E P L A C E M E N T O F P A R T S 1 9 VI MI SCELL ANEOUS C HARTS AND FORMULAS 24[...]

  • Page 4

    4[...]

  • Page 5

    5 SECTION I - GENERAL DESCRIPTION AND CONST RUCTION GENERAL DESCRIPTION This book describes a packaged electric booster heater that is ty pically used to provide 180 ° F sanitizing rinse water. The complete assembly consists of the storage tank, immersion electric heating element(s), thermostat, safety relief valve, safety high temperature cut out[...]

  • Page 6

    6 CONTROL THERMOS TAT The water heater is supplied with an immer sion thermostatic switch that is i nstalled and wired at t he factory. The thermostat can be adjusted through a range of 100° - 195° F and is adjustable with a flat tip screwdriver. TEMPERATURE HIGH LIMIT SWIT CH A surface mounted high temperature cut-off switch with manual reset, f[...]

  • Page 7

    7 OPTIONS The following optional features may be included in y our water heater. Reference included drawing specific to y our heater for further details. Low Water Cut-Off Used as a safet y devi ce, the electroni c low water cut-off is used to detect a low water situation and disengage the operating coils in the magne tic contactor(s). Once the con[...]

  • Page 8

    8 Pressure Reducing Valv e An optional pressure reducing valve with built-in by pass may be supplied. This valve is shipped separately for in-line installation. Stainless Ste el Outer Jacket An optional stainl ess steel outer jacket m ay replace t he standard galvaneel jacket. Suspension Stra ps For under counter, off the floor operation an optiona[...]

  • Page 9

    9 SECTION II – INSTALLATION WARNING / CAUTION DO NOT TURN ON THE ELECTRI C POWER SUPPL Y to this equipment until heate r is completely filled with water and all air has been re leased. If the heater is NOT fille d with water when the power is turned on, the heating elements will burn out. For protection against excessive pressures and temperature[...]

  • Page 10

    10 of water. To over come this condition, it is recommended that a 3/8” by -pass arrangement with a horizontal check valve be installed around the pressure regulator. This will prevent annoy ance caused by the relief valve dripping or blowing off. 3. I nstall in-line pressure and temperature gaug e, if supplied. 4. I nstall the combination temper[...]

  • Page 11

    11 FINAL CHECKS 1. Check all connections for tightness. 2. Ensure that all the above steps are completed 3. After the wa ter is heated f or the first time, monitor the water te mperature as described in S e ct i o n III, Q u a rt e r l y In s p e c t i on. Outg oing Water (180°F) ! ! ! ! Important ! ! ! ! Do not install any valves other than those[...]

  • Page 12

    12 1 – Terminal Block 2 – Magnetic Contactor 3 – Heating Element 4 – Low Water Cut-Off, if supplied 5 – Transformer, 480-Volt/240-Volt, installed on 480-Volt models with low water cut-off only 6 – High-Te mperature L imit Switch 7 – Control Thermostat[...]

  • Page 13

    13 1 – Terminal Block 2 – Magnetic Contactor 3 – Heating Element 4 – Low Water Cut-Off, if supplied 5 – Transformer, 480-Volt/240-Volt, installed on 480-Volt models with low water cut-off only 6 – High-Te mperature L imit Switch 7 – Control Thermostat[...]

  • Page 14

    14[...]

  • Page 15

    15 SECTION III - SCHEDULED MAINTE NANCE AND OPERATION WARNING / CAUTION Before performing any maintenance procedure, make certain power supply is OF F and cannot accidentally be turned on. MAINTENANCE AND OPERATION The water heater is automatic in its operation. I t will maintain a full tank of water at the temperature setting of the thermostat. Th[...]

  • Page 16

    16 ANNUAL INSPECTION 1. Flush tank as follows a. Shut off power supply . b. Close valve on hot water outlet piping. c. Open valve on drain piping. d. Cold water inlet line pressure will be strong enough to flush sediment from the bottom of the tank out through the drain. L et water run for 3-4 minutes. e. Close drain valve. f. Open hot water valve.[...]

  • Page 17

    17 SECTION IV – TROUBLESHOOTING Symptom Probable Cause Corrective Action / Remedy Circuit breaker tripped at source. Reset circuit breaker. Blown fuse in transformer, if installed. Replace fuse. High limit switch tr ipped. Reset hig h limit switch. Loose wires. Tighten wires. Torque screws per torque chart included in Section VI . Heating element[...]

  • Page 18

    18 Faulty thermostat. Che ck thermostat a djustment. Monitor thermostat as described i n S e c t i o n III, Q u a rt er l y I nspection. Replace if necessary . Heating e lement not working on all phases Check to see that heating element is working on all phases, by checking the resistance (ohms) value for each element and c omparing with the chart [...]

  • Page 19

    19 SECTION V - SERVICING & REPLACEMENT OF PARTS WARNING / CAUTION Before servicing or replacing any part make sure to turn the power supply switch to the OF F position. SURFACE TEMPERATURE HIGH LIMIT CUT -OFF 1. Disconnect power from unit. 2. Remove access cover. 3. Disconnect the four (4) 14 gauge wires. Control Wires 4. Remove the two (2) mou[...]

  • Page 20

    20 HEATING ELEM ENT 1. Disconnect power from unit. 2. Shut off incoming water supply . 3. Attach hose to drain connection. 4. Lift manual release lever on relief valve to let air into sy stem or break union on outgoing water line. 5. Drain water from tank. 6. Disconnect the wires from the heating element terminals. Not e that picture shown i s a th[...]

  • Page 21

    21 IMMERSION THE RMOSTAT 1. Disconnect power from unit. 2. Remove access cover and locate t hermostat. 3. Remove high limit c over screw and cover. Cover Cover Screw 4. Disconnect the two (2) 14 gauge wires. Wires Capillary Tube 5. Remove capilla ry tube a nd bulb from thermowell. 6. Remove two (2) mounting screws. Mounting Screws 7. Replace thermo[...]

  • Page 22

    22 MAGNETIC CONTACTOR 1. Disconnect power from unit. 2. Disconnect line and load wires to contactor. 3. Disconnect two (2) 14 gaug e control circuit wires. Control Wires Line Wires Load Wires 4. Loosen two (2) holding screws and remove contactor. Mounting Screws (Bottom screw not shown) 5. Replace with new cont actor using reverse procedure.[...]

  • Page 23

    23 RELIEF VALVE 1. Disconnect power from unit. 2. Shut off incoming water supply . 3. Lift test lever on relief valve to relieve pressure in tank. 4. Disconnect overflow piping. 5. Unscrew relief valve, remove assemb ly and repl ace with new one. 6. Connect overflow piping. 7. Turn on incoming water supply and check for leaks. 8. Turn safety switch[...]

  • Page 24

    24 SECTION VI – MISCELL ANEOUS CHARTS AND FORMULAS ELEMENT CHA RT Power (kW) Resistance (Ohms) Element Part # 208V 240V 480V I mmersion L ength Hairpin 1 Φ 3 Φ DELTA 3 Φ WYE CH-FO 608 6 ---- ---- 13 3/8" 7.2 7.2 ---- ---- CH-FO 604 4.5 6 ---- 13 3/8" 9.6 9.6 ---- ---- 4-38683N 4 5 6 13" 34.4 11.5 34.4 23.0 5-38683N 5 6 8 13"[...]

  • Page 25

    25 TORQUE VALUE S BOLT SIZE 18-8 S/S IN. - LB S . BRASS IN. - LB S . SI LI CON BRONZE IN. - LB S . ALUMI NUM 2024-T4 IN. - LB S . 316 S/S IN. - LB S . MONEL IN. - LB S . 4-40 5.2 4.3 4.8 2.9 5.5 5.3 4-48 6.6 5.4 6.1 3.6 6.9 6.7 5-40 7.7 6.3 7.1 4.2 8.1 7.8 5-44 9.4 7.7 8.7 5.1 9.8 9.6 6-32 9.6 7.9 8.9 5.3 10.1 9.8 6-40 12.1 9.9 11.2 6.6 12.7 12.3 8[...]