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Hubbell Electric Heater Company A 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 “ A ”[...]

  • 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 16 I V TROUBL ES HOOTI NG 18 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 2 0 VI MI SCELL ANEOUS C HARTS AND FORMULAS 25[...]

  • 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 FUSED LOW VOLTAGE TRANS FORMER A fused low voltag e transformer is supplied with all models rated for 480-volts. This component is used to step down the 480-volt power supply to 240-volts for safety when working with control circ uits. ON/OFF SWITCH An illuminated on/off switch is pr ovided for positive verification hea t er status. OPTIONS The f[...]

  • 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. Stainless Ste el Legs As an option, 6-inch adjustable stainless steel le[...]

  • 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. Outgoing Water (180°F ) ! ! ! ! Important ! ! ! ! Do not install any valves other than those[...]

  • Page 12

    12[...]

  • Page 13

    13[...]

  • Page 14

    14 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 only . 6 – High-Te mperature L imit Switch 7 – Control Thermostat 8 – I lluminated On/Off Switch[...]

  • Page 15

    15[...]

  • Page 16

    16 SECTION III - SCHEDULED MAINTE NANCE AND OPERATION WARNING / CAUTION Before performing any maintenance procedure, make certain power supply is OFF 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. The[...]

  • Page 17

    17 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 18

    18 SECTION IV – TROUBLESHOOTING Symptom Probable Cause Corrective Action / Remedy Circuit breaker tripped at source. Reset circuit breaker. On/Off switch in ‘OFF’ position Turn switch to ‘ON’ position Blown fuse in transformer, if installed. Replace fuse. High limit switch tr ipped. Reset hig h limit switch. Loose wires. Tighten wires. To[...]

  • Page 19

    19 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 20

    20 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. 4. Remove the two (2) mounting screws. [...]

  • Page 21

    21 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 22

    22 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 23

    23 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 24

    24 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 25

    25 SECTION VI – MISCELL ANEOUS CHARTS AND FORMULAS ELEMENT CHA RT Power (Wat ts) Element Part # 120V 208V 240V 480V I mmersion L ength Element Resistance (Ohms) CH-FO-358 ---- 3500 ---- ---- 11 3/8" 12.36 CH-FO-408 ---- 4000 ---- ---- 11 3/8" 10.82 CH-FO-508 ---- 5000 ---- ---- 13 1/4" 8.65 CH-FO-608 2000 6000 ---- ---- 13 3/8"[...]

  • Page 26

    26 FORMULAS[...]

  • Page 27

    27 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[...]