Instruction/ maintenance manual of the product EMV Hubbell Electric Heater Company
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OPERATING AND MAINTENANCE MANUAL FOR PACKAGED ELECTRIC TEPID WATER HEATING SYSTEM ELECTRIC HEATER COMPANY BASE MODEL “ EMV ”.
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 C ONTENTS SECTION TITLE PAG E # I GENERAL DESCRI PTI ON AND CONSTRUCTION 5 I I I NSTAL L ATI ON 7 III SC H E D U LE D M A IN T E NANCE AND OPERATION 9 IV TR OUBLESHOOTI NG 12 V S E R V I C .
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5 SECTION I - GENERAL DESCRIPTION AND CONST RUCTION GENERAL DESCRIPTION This manual describes a pack aged electric water heater system designed to meet the requirem ents of ANSI Z358.
6 TEMPERATURE H IGH LIM IT SWITCH As a safety dev ice, a surface mounted high tem perature cut-off switch with m anual reset is supplied. As an option, an imm ersion high temp erature cut-off switch with m anual reset may be prov ided. Either high temperature cut- out switch is factory preset at 190°F.
7 OPTION S The following optional features may be included in y our water heater. Reference included drawing specific to your heater for further details. Low Temperature Alarm Dry C ontacts A low temperature therm ostat is available with dry contacts to rem otely alarm when the tank water tem perature falls below a specified setpoint.
8 PIPIN G IN STAL LA TION NOTE: The most effectiv e means for preventing deterioration from accelerated corrosion due to g alvanic and stray current is the installation of dielectric fittings/unions. The installation of these fittings is the responsibility of the installing contractor.
9 FILLI NG THE HEATER 1. Com pletely close the drain valve. 2. Open the hig hest tepid water outlet to allow all air to escape from piping. 3. The black plastic knob on the air v ent valve m ust be opened two turns to allow air to escape from the system .
10 QUARTERLY I NSPECTIO N 3. Monitor thermostat a. Let water heater com pletely heat to a designated therm ostat setting. b. After therm ostat satisfies (that is, when the therm ostat actually clicks off), draw w ater from the relief val ve.
11 MIXING VALVE INSPECTION AND TES T LOG COMPANY: H E A T E R S E R I A L N U M B E R : DATE START-UP SPIKE OUTPU T TEMPERATURE COMMENTS TESTED BY.
12 SECTION IV – TROUBLESHOOTING Symptom Probable Cause Corrective Action / Remedy Circuit breaker tripped at source. Reset circuit breaker. High lim it switch tripped. Reset high limit sw itch. Loose wires. Torque screws holding wires. Heating element inoperable.
13 SECTION V - SERVICING & REPLACEMENT OF PARTS WARNING / CAUTION Before servicing or replacing any part m ake sure to turn the power supply sw itch to the OFF position. SURFACE TEMP ERATURE HIGH LIMI T CUT-OF F 1. Disconnect power from unit. 2. Rem ove access cov er.
14 IMMERSI ON TEMP ERATURE HIGH LIMIT CUT- OF F 1. Disconnect power from unit. 2. Rem ove access cov er. 3. Remo ve h igh li mit co ver s cr ew a nd co ver . Cover Cover Screw Reset Switch 4. Disconnect the two (2) 14 gaug e wires. Wires Capillary Tube 5.
15 SINGLE PH ASE HEATING ELEM ENT 1. Disconnect power from unit. 2. Shut off incoming water supply. 3. Attach hose to drain connection. 4. Lift manual release lev er on relief valve to let air into system or break union on outgoing water line. 5. Drain water from tank .
16 3-PH ASE HEATING ELEMENT 1. Disconnect power from unit. 2. Shut off incoming water supply. 3. Attach hose to drain connection. 4. Lift manual release lev er on relief valve to let air into system or break union on outgoing water line. 5. Drain water from tank .
17 3-PHASE ELEMENT JUMPER CONFI GURATION.
18 IMMERSI ON THERMO STAT 1. Disconnect power from unit. 2. Rem ove access cov er and locate thermostat. 3. Remo ve h igh li mit co ver s cr ew a nd co ver . Cover Cover Screw 4. Disconnect the two (2) 14 gaug e wires. Wires Capillary Tube 5. Rem ove capillary tube and bulb from .
19 MAGNETIC CONTACTO R (3-P HASE O NLY) 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 rem ove contactor.
20 RELIEF VALVE 1. Disconnect power from unit. 2. Shut off incoming water supply. 3. Lift test lever on relief v alve to relieve pressure in tank. 4. Disconnect overflow piping . 5. Unscrew relief v alve, remov e assemb ly and replace with new one. 6.
21 MIXING VALVE 1. Disconnect power from unit. 2. Shut off incoming water supply. 3. Lift test lever on relief v alve to relieve pressure in tank. 4. Drain tank. 5. Disconnect unions on both sides of the mixing valv e. 6. Remov e mixing valv e. 7. Replace m ixing v alve.
22 SECTION VI – ELEMENT CHA RTS SINGLE PH ASE ELEMENT CHART Power (Watts) Element Part # 120V 208V 240V 277V 480V Immer s i o n Length Element R esistance (Ohms) CH-FO- 358 ---- 3500 ---- ---- ---- 11 3/ 8 " 12.36 CH-FO- 408 ---- 4000 ---- ---- ---- 11 3/ 8 " 10.
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If you already are a holder of Hubbell Electric Heater Company EMV, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Hubbell Electric Heater Company EMV.
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