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Summary of Contents for Hubbell V10
- Page 1 OPERATING AND MAINTENANCE MANUAL FOR ELECTRIC INDUSTRIAL PROCESS WATER HEATER ELECTRIC HEATER COMPANY BASE MODEL “ V10 and V20 ”...
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Page 2: Warning / Caution
A qualified installer is a person who has licensed training and a working knowledge of the applicable codes regulation, tools, equipment, and methods necessary for safe installation of an electric resistance water heater. If questions regarding installation arise, check your local plumbing and electrical inspectors for proper procedures and codes. -
Page 3: Table Of Contents
SECTION TITLE GENERAL DESCRIPTION AND CONSTRUCTION INSTALLATION SCHEDULED MAINTENANCE AND OPERATION TROUBLESHOOTING SERVICING & REPLACEMENT OF PARTS MISCELLANEOUS CHARTS AND FORMULAS TABLE OF CONTENTS PAGE #... -
Page 5: Tank Connections
GENERAL DESCRIPTION AND CONSTRUCTION GENERAL DESCRIPTION This booklet describes an electric water heater designed for use in an industrial or commercial application. 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), and any other required electrical operating control. -
Page 6: Control Thermostat
CONTROL THERMOSTAT The water heater is supplied with a single stage immersion thermostatic switch that is installed and wired at the factory. The thermostat can be adjusted through a range of 100° - 195° F, (an optional low range, 30° - 110°... -
Page 7: Outer Shell, Insulation, And Supports
Heavy gauge steel support legs are provided. OPTIONS The following optional features may be included in your water heater. Reference included drawing specific to your heater for further details. Low Water Cut-Off... - Page 8 Dial Temperature and 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 loose). Vacuum Relief Valve A vacuum relief valve may be provided with the unit to reduce the risk of back siphonage and back pressure of the system.
- Page 9 Building Management System (BMS) A Building Management System control package may be supplied for remote operation and alarm capabilities. Pump Interlock Terminal Block An optional pump interlock terminal block may be installed to prevent energizing when the pump is not running.
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Page 10: Piping Installation
1. Place the heater on a solid foundation in a clean, dry location nearest to the point of hot water use. 2. The water heater should be protected from freezing and waterlines insulated to reduce energy and water waste. 3. Leave a minimum of 18” clearance for element withdrawal, if necessary. -
Page 11: Electrical Installation
4. Install the combination temperature and pressure safety relief valve in the tapping provided. Note that this is required by law for safety considerations. Outlet to floor drain Manual Release Lever Temperature and Pressure Relief Valve 5. Install a relief valve overflow pipe to a nearby floor drain. CAUTION: No valve of any type should be installed between the relief valve and tank or in the drain line. -
Page 12: Final Checks
3. After the water is heated for the first time, monitor the water temperature as described in Section III, Quarterly Inspection. Outgoing Hot Water Incoming Cold Water 1 – V Model Water Heater 2 – Pressure and Temperature Relief Valve (pipe overflow to floor drain or sink) 3 – Drain Valve 4 – Pressure/Temperature Gauge 5 –... - Page 13 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 14 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...
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Page 16: Quarterly Inspection
MAINTENANCE AND OPERATION The water heater is automatic in its operation. It will maintain a full tank of water at the temperature setting of the thermostat. The water heater should not be turned on without first making sure that the tank is full of water and that all air has been released. -
Page 17: Annual Inspection
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. -
Page 18: Troubleshooting
SECTION IV – Symptom No hot water TROUBLESHOOTING Probable Cause Circuit breaker tripped at source. Blown fuse in transformer, if installed. Circuit breaker at control cabinet tripped, if installed. Blown fuse in element fuse block, if installed. High limit switch tripped. Loose wires. - Page 19 Water temperature below settings at all times Relief valve discharges continuously Faulty thermostat. Heating element not working on all phases Blown fuse in element fuse block, if installed. Heater improperly sized Excessive temperature or pressure in tank Check thermostat adjustment. Monitor thermostat as described in Section III, Quarterly Inspection.
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Page 20: Servicing & Replacement Of Parts
SECTION V - Before servicing or replacing any part make sure to turn the power supply switch to the OFF 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. - Page 21 IMMERSION TEMPERATURE HIGH LIMIT CUT-OFF 1. Disconnect power from unit. 2. Remove access cover. 3. Remove high limit cover screw and cover. 4. Disconnect the two (2) 14 gauge wires. 5. Remove capillary tube and bulb from thermowell 6. Remove two (2) mounting screws. 7.
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Page 22: Heating Element
HEATING ELEMENT 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 system or break union on outgoing water line. 5. Drain water from tank. 6. -
Page 23: Immersion Thermostat
IMMERSION THERMOSTAT 1. Disconnect power from unit. 2. Remove access cover and locate thermostat. 3. Remove high limit cover screw and cover. 4. Disconnect the two (2) 14 gauge wires. 5. Remove capillary tube and bulb from thermowell. 6. Remove two (2) mounting screws. 7. - Page 24 MAGNETIC CONTACTOR 1. Disconnect power from unit. 2. Disconnect line and load wires to contactor. 3. Disconnect two (2) 14 gauge control circuit wires. 4. Loosen two (2) holding screws and remove contactor. 5. Replace with new contactor using reverse procedure.
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Page 25: Relief Valve
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 assembly and replace with new one. 6. -
Page 26: Miscellaneous Charts And Formulas
SECTION VI – ELEMENT CHART Power (kW) Element Part # 208V 240V 480V CH-FO 608 ---- ---- CH-FO 604 ---- 4-38683N 5-38683N 6-38683N 7-38683N 8-38683N 9-38683N 10-38683N ---- 11-38683N 17.3 ---- ---- FORMULAS MISCELLANEOUS CHARTS AND FORMULAS Immersion Length Hairpin 13 3/8"... -
Page 27: Torque Values
TORQUE VALUES 18-8 S/S BOLT SIZE IN.-LBS. IN.-LBS. 4-40 4-48 5-40 5-44 6-32 6-40 12.1 8-32 19.8 8-36 22.0 10-24 22.8 10-32 31.7 1/4-20 75.2 1/4-28 94.0 5/16-18 5/16-24 3/8-16 3/8-24 7/16-14 7/16-20 1/2-13 1/2-20 9/16-12 9/16-18 5/8-11 1110 5/8-18 1244 3/4-10 1530...
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