Hubbell Electric Heater Company " SE " manual

OPERATING AND MAINTENANCE MANUAL FOR COMMERCIAL ELECTRIC WATER HEATER ELECTRIC HEATER COMPANY BASE MODEL “ SE ”[...]

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[...]

3 TABLE OF CONTENTS SECTION TITLE PAG E # I GENERAL DESCRI P TI ON AND CONSTRUCTION 5 II INSTAL LATI ON 10 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 SERVICI NG AND REPLACEMENT OF PARTS 16 VI MI SCELL ANEOUS C HARTS AND FORMULAS 24[...]

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5 SECTION I - GENERAL DESCRIPTION AND CONST RUCTION GENERAL DESCRIPTION This book describes a packaged electric water heater that is a stationary, self-contained unit. The complete assembly consists of the storage tank, immersion electric heating element(s), thermostat, safety relief valve, safety high temperature cut out, magnetic contactor(s), an[...]

6 CONTROL THERMOS TAT The water heater is supplied with either a surface mounted or immersion thermostatic switch that is installed and wired at the factory . See drawing for specific details. The surface mounted thermostat can be adjusted through a range of 110° - 170° F . The immersion thermostat can be adjusted through a range of 100° - 190°[...]

7 MAGNETIC CONTACTOR The magnetic contactor(s) is a heavy -duty resistive load ty pe rated for 100,000 cy cles. T he co nt act o r su ppl i es p ow er t o t he hea ti ng e le men t( s) and is si z ed b as ed on t he resistive load (non-inductive) rating of the circuit. The contactor supplies power on ly whe n t he t he rm os ta ti c s wit ch is en [...]

8 Fused Low Voltage Transformer A fused low voltage transformer may be supplied. This option is used to step down higher voltages to 120-volt for the control circuit. Dial Temperature an d Pressure Gauge A combination temperature (70° - 250° F) and pressure (0 – 200 psi) gauge with 2½-inch dial may be supplied for in-line installation (shipped[...]

9 On/Off Switch A built-in non-fused On/Off disconnect switch may be supplied with the control panel to disconnect power to the control panel control and power circuit wiring. Individually Fused Ele me nts To prevent the possibility of damag e to circuits and elements in c ase of electrical overloa ds, fuses may be supplied for each circuit. Two ty[...]

10 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 temperatur[...]

11 Outlet to floor drain Install into provided tapping Manual Release Lev e r Temperature Probe Temperature and Pressure Relief Valve 5. 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. FILLING THE HEATER 1. Completely close the [...]

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. I t will maintain a full tank of water at the temperature setting of the thermostat. The[...]

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. L et water run for 3-4 minutes. e. Close drain valve. f. Open hot water valve.[...]

14 SECTION IV – TROUBLESHOOTING Symptom Probable Cause Corrective Action / Remedy Circuit breaker tripped at source. Reset circ uit breaker. On/Off switch in ‘OF F’ position, if installed. Turn switch to ‘ON’ position. Circuit breaker at control cabinet trippe d, if installed. Reset circ uit breaker. Blown fuse in element fuse block, if i[...]

15 Faulty thermostat. Chec k thermostat adjustment. Monitor thermostat 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. Replace if necessary. Blown fuse in element fuse block, if installed. Replace fuse. Heating element not worki ng on all phases Check to see th at heating element is working on all phases, by checking the resis[...]

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. 3. Disconnect the four (4) 14 gauge wires. Control Wires 4. Remove the two (2) mou[...]

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. Remove two (2) mounting screws. Mounting Screws 7. Remov[...]

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. 6. Disconnect the wires from the heating elem ent terminal s. 7. Remove the 3/8-16 nuts. Tank[...]

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20 SURFACE MOUNTED THE RMOSTAT 1. Disconnect power from unit. 2. Remove access cover and locate t hermostat. 3. Disconnect the two (2) 14 gauge wires. Control Wires 4. Remove two (2) mounting screws. Mounting Screws 5. Replace thermost at using the reverse procedure.[...]

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[...]

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.[...]

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[...]

24 SECTION VI – MISCELL ANEOUS CHARTS AND FORMULAS ELEMENT CHA RT Resistance (Ohms) Element Part # I mmersion L ength Hairpin 1 Φ 3 Φ DELTA 3 Φ WYE 2-38683N 13" 57.6 19.2 57.6 38.6 3-38683N 13" 43.2 14.4 43.2 28.9 4-38683N 13" 34.4 11.5 34.4 23.0 5-38683N 13" 27.9 9.3 27.9 18.7 6-38683N 13" 21.6 7.2 21.6 14.5 7-38683N [...]

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[...]