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Hubbell Electric Heater Company WATER HEATER DF manual

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Table of contents for the manual

  • Page 1

    OPERATING AND MAINTENANCE MANUAL FOR POWER BURNER SERIES FORCED DRAFT COMMERCIAL WATER HEATER ELECTRIC HEATER COMPANY BASE MODEL “ DF ”[...]

  • Page 2

    2 HUBBELL ELECTRIC HEATER COMPANY P.O. BOX 288 STRATFORD, CT 06615 PHONE: (203) 378-2659 FAX: (203) 378-3593 INTERNET: ht tp://www.hubbe llheat ers .com / -- IMPORTANT -- Always reference the f ull model num ber and serial num ber when calling the factory. WARNING / CAUTION ¾ Do not use or store g asoline or any other flammable vapors, liquids, or[...]

  • Page 3

    3 FOR YOUR SAFETY WHAT TO DO IF Y OU SM ELL G AS ¾ DO NOT try to light any applianc e. ¾ DO NOT touch any el ectrical swit ch. ¾ DO NOT use any phone in the building. ¾ I mmediately call y our gas supplier from a neig hbor's phone. Follow the g as supplier's instructions. I f y ou cannot reach your g as supplier, call the fire departm[...]

  • Page 4

    4 SAFETY TEMPERATURE AND PRES SURE RELI EF VALVE (T&P) A listed and proper ly rated combination temper ature and pre ssure relief valve shall be installed in the opening provided and marked for this purpose at the time of installation. Local codes shall govern installati on of relief devices. The pressure ratin g of the relief valve must not ex[...]

  • Page 5

    5 TABLE OF C ONTEN TS SECTION TITLE PAGE # I G E N E R A L D E S C R I P T I O N 9 I I I N S T A L L A T I O N 1 0 III S T A R T U P AND OPERATION 16 I V S CHEDULED MAINTENANCE AND SER VI CING 18 V TROUBLESHOOTI NG 25 VI MISCELL ANEOUS CHARTS AND FORMULAS 26[...]

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  • Page 9

    9 SECTION I - GENERAL DESCRIPTION GENERAL DESCRIPTION This i s a commercial storage water heater desi gned and constructed in accordance with UL and ASME requirements. Its thermal efficiency and standby loss ex ceed the levels established by ASHRAE 90.1 and incorporated by federal EPACT legislation. Given a reasonable amount of maintenance, this wa[...]

  • Page 10

    10 SECTION II – INSTALLATION WARNING / CAUTION For protection against excessive pressures and temperatures, local codes require the installation of a temperatur e-and-pr essure (T&P) relie f valve certified by a nationally reco gnized la boratory that maintains periodic inspection of production of listed equipment of materials, as meeting the[...]

  • Page 11

    11 LOCATION NOTE: Do not run uninsulated water pipes in front of or directly above a fresh air opening. I f an exhaust fan is installed in the mechanical room, the combustion a ir inlet must allow for the fan's exhaust air volume. An undersized opening may cause down drafts resulting in poor combustion, sooting and carbon monoxide. 1. Position[...]

  • Page 12

    12 be installed so the he ater may be disconnected for ser vicing if ne cessary . Hot water and return circulation lines should be insulated. The cold water supply line should be insulated if subjected to freezing temperat ures. When a check valve i s instal led in the col d water line to the water heater, a diaphragm ty pe expansion tank suitable [...]

  • Page 13

    13 ELECTRICAL C ONNECTIONS Electrical connections to the water heater should conform to the National Electrical Code or the code legally authorized in your locality . A fused disconnect switch should be used in the burner control circuit. The contract or shall run the properly sized electrical servi ce to the terminals indicated on burner wiring di[...]

  • Page 14

    14 GAS CONNECTION PIPING F O R GAS AND COMBINATION GAS/OIL BURNERS WARNING / CAUTION L P UNITS; liquefied petroleum (L .P.) gas is heavier tha n air and will remain at floor le vel if there is a leak. Basements, crawl spaces, closets and areas below ground level will serve as pockets for accumulation of l eaking L.P ga s. Before operating the water[...]

  • Page 15

    15 3. A Rule of Thumb to determine total suction for suction line sizing is to add 10% to suction determined from the burner manufacturer's instruction manual. 4. I t is good practice to size the oil pump return-line (to the tank) the same size as the selected suction line. PRESSURE AND TE MPERATURE SAFETY RELIE F VALVE 1. I nstall the combina[...]

  • Page 16

    16 SECTION III – START UP AND OPERATION WARNING / CAUTION Temperatures above 130ºF (54º C) can cause scalding. Scalding temperatures are especially hazardous to y oung children, aged or handicapped persons. A serious or disabling injury can occur. Note that a mix ing valve installed at the hot wate r outlet can reduce the risk of scalding at su[...]

  • Page 17

    17 2. The burner manufacturer's installation and operation manual, included with this manual, contains a detailed start up procedure that should be studied and followed precisely . NOTE: Rate d gas input for this water heater can be established by adjusting manifold gas pressure to the value listed on the burner data plate. Rated oil input can[...]

  • Page 18

    18 SECTION IV - SCHEDULE D MAINTENANCE AND SE RVICING WARNING / CAUTION Before performing any maintenance procedure, turn off the water heater main disc onnect switch before performing any cleaning or service. Also close both the pilot and main manual shutoff valves. Keep the equipment room cl ean. Clean the burner at regular i ntervals. The blower[...]

  • Page 19

    19 RECOMMENDED PERIODIC INSPECTION DAILY 1. I nspect area around water heater for moisture. If present, determine if cause is condensation or leakage. a. If cause is condensation - May be due to very cold incoming water. Consider installation of intra-tank circulator; contact manufacturer for details. b. I f cause is leakage - May be due to leaking[...]

  • Page 20

    20 RECOMMENDED PERIODIC TES TING TESTING ITEM HOW OFTEN COMP LETED BY REMARKS Gauges, m onitors and operating log Daily Operator Make vis ual inspection and record readings Instru men t and equipmen t settings Daily Operator Make vis ual check ag ainst recomm ended specifications Weekly Operator Verify factory setting s Semiannually Service T ech V[...]

  • Page 21

    21 SCALE AND S EDIMENT REMOVAL THE MANUFACTURER CANNOT CONTROL USE OF THE WATER HEATER, WATER CONDITIONS OR MAINT ENANCE. THE WATER HEATER WARRANTY DOE S NOT[...]

  • Page 22

    22 BURNER SERVICE IMPORTANT IT IS HIGHLY RECOMMENDE D THAT REPLACEME NT PARTS OR ASSEMB LIES BE OBTAINED FROM THE WATER HE ATER OR BURNER MANUFACTURER. The enclosed burner installation and operation manual contains a service suggestion (troubleshooting) section and a periodic checklist that recommends a variety of component tests designed to help m[...]

  • Page 23

    23 RELIEF VALVE 1. Disconnect power from unit. 2. Shut off incoming water and boiler 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. T[...]

  • Page 24

    24 IMMERSION TEMPERATURE HIGH LIMIT CUT-OFF, HIG H, OR LOW THE RMOSTAT 1. Disconnect power from unit. 2. Remove access cover. 3. Remove high limit c over screw and cover. Cover Cover Screw Reset Tab (Hig h Limit Only ) 4. Disconnect the two (2) 14 gauge wires. Wires Capillary Tube 5. Remove capilla ry tube and bulb from thermowell 6. Remove two (2)[...]

  • Page 25

    25 SECTION V – TROUBLESHOOTING (See separate component O &M for add itional d etails.) Symptom Probable Cause Corrective Action / Remedy Flame safeguard locked out. Reset flame safeguard. Manual gas valve closed. Open gas valve and reset flame safeguard. Blown control circui t. Replace fuse. No power. Re set ci rcu i t b rea ker . No hot wate[...]

  • Page 26

    26 SECTION VI – MISCELL ANEOUS CHARTS AND FORMULAS 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[...]

  • Page 27

    27 METRIC CONVERSIONS[...]