Instruction/ maintenance manual of the product D Hubbell Electric Heater Company
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OPERATING AND MAINTENANCE MANUAL FOR ELECTRIC STAINLESS STEEL HEATER FOR DEIONIZED (DI) WATER ELECTRIC HEATER COMPANY BASE MODEL “ D ”.
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.
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 12 I V TROUBL ES HOOTI NG 14 V SER VI CING.
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5 SECTION I - GENERAL DESCRIPTION AND CONST RUCTION GENERAL DESCRIPTION This booklet describes an electric heater designed specifically for use in deionized (DI ) water applications.
6 CONTROL THERMOS TAT The water heater is supplied with a single stage imme rsion thermostatic switch that i s installed and wi red at the factory. The thermostat can be adjusted through a range of 100° - 195° F, (an optional low range, 30° - 110° F, is available), and is adjustable with a flat tip screwdriver.
7 OUTER SHELL AND INSULATION The tank is encapsulated in 2-inches of high-density fiberglass insulation. The protective shell is constructed of galvaneel and is coated with a durable silver hammertone finish. OPTIONS The following optional features may be included in y our water heater.
8 Individually Fused Ele me nts To prevent the possibility of damage to c ontrol circuits a nd other eleme nts in case of electric al overloads, fuses may be supplied for each circuit. Two ty pes of fuses m ay be used; a type NON for voltages less than 250-volt or ty pe JJ S for voltage less than 600-volt.
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 ha s been released. I f the heater is NOT filled with water when the power is turned on, the heating elements will burn out.
10 Outlet to floor drain I nstall into provided tapping Manual Release Lev e r Temperature and Pressure Relief Valve 3. I nstall a relief valve overflow pipe to a nearby floor drain. CAUTION: No valve of any ty pe should be installed between the relief valve and tank or in the drain line.
11 THERMOSTAT SETTING (BULB AND CAPILLARY IMMERSION TYP E) The bulb and capillary type thermostat is immersed in a Ty pe 316L stainless steel well in the storage vessel. The full thermostat range is 100-240 ° F, but should not be operated over 195 ° F.
12 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.
13 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.
14 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. Circuit breaker at control cabinet tripped, if installe d.
15 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 .
16 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.
17 IMMERSION TEMPERATURE HIGH L IMIT CUT-OFF 1. Disconnect power from unit. 2. Remove access cover. 3. Remove high limit c over screw and cover. Cover Cover Screw Reset Switch 4. Disconnect the two (2) 14 gauge wires. Wires Capillary Tube 5. Remove capilla ry tube a nd bulb from thermowell 6.
18 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.
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20 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.
21 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.
22 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.
23 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 50-38683SSN 5 6 8 13" 27.9 9.3 27.9 18.7 60-38683SSN 6 8 10 13" 21.
24 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.
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