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Hubbell Electric Heater Company V10, V20 Terminal Block 2 - Magnetic Contactor, Heating Element

Models: V20 V10

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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 with low water cut-off only 6 – High-Temperature Limit Switch

7 – Control Thermostat

Page 13

Image 13

Hubbell Electric Heater Company V10 Terminal Block 2 - Magnetic Contactor, Heating Element, Low Water Cut-Off,if supplied

Contents

OPERATING AND MAINTENANCE MANUAL FOR BASE MODEL “ V10 and V20 ”ELECTRIC INDUSTRIAL PROCESS WATER HEATER ELECTRIC HEATER COMPANYSTRATFORD, CT PHONE 203 FAX HUBBELL ELECTRIC HEATER COMPANY P.O. BOXWARNING / CAUTION SECTION TABLE OF CONTENTSTITLE PAGE #Page GENERAL DESCRIPTION TANK CONNECTIONSCONSTRUCTION SECTION I - GENERAL DESCRIPTION AND CONSTRUCTIONCONTROL THERMOSTAT TEMPERATURE HIGH LIMIT SWITCHMAGNETIC CONTACTOR OPTIONS OUTER SHELL, INSULATION, AND SUPPORTSLow Water Cut-Off Fused Low Voltage TransformerVacuum Relief Valve Dial Temperature and Pressure GaugeIndividually Fused Elements Built-inCircuit BreakerBuilding Management System BMS Special Customized FeaturesPump Interlock Terminal Block Silicon Control RectifierPIPING INSTALLATION WATER HEATER PLACEMENTWARNING / CAUTION SECTION II - INSTALLATIONFILLING THE HEATER ELECTRICAL INSTALLATIONFINAL CHECKS 3 - Heating Element 1 - Terminal Block 2 - Magnetic Contactor4 - Low Water Cut-Off,if supplied 7 - Control Thermostat1 - Terminal Block 2 - Magnetic Contactor 6 - High-TemperatureLimit Switch3 - Heating Element 4 - Low Water Cut-Off,if suppliedPage MAINTENANCE AND OPERATION SECTION III - SCHEDULED MAINTENANCE AND OPERATIONFREEZING QUARTERLY INSPECTION1.Flush tank as follows a.Shut off power supply ANNUAL INSPECTIONg.Turn power supply ON b.Close valve on hot water outlet pipingSymptom SECTION IV - TROUBLESHOOTINGProbable Cause Corrective Action / RemedyFaulty thermostat Water temperature belowCheck thermostat adjustment settings at all timesSURFACE TEMPERATURE HIGH LIMIT CUT-OFF SECTION V - SERVICING & REPLACEMENT OF PARTSWARNING / CAUTION IMMERSION TEMPERATURE HIGH LIMIT CUT-OFF HEATING ELEMENT 1.Disconnect power from unitIMMERSION THERMOSTAT 2.Disconnect line and load wires to contactor 1.Disconnect power from unit3.Disconnect two 2 14 gauge control circuit wires Control Wires Line Wires Load WiresRELIEF VALVE ELEMENT CHART SECTION VI - MISCELLANEOUS CHARTS AND FORMULASFORMULAS TORQUE VALUES