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Summary of Contents for Hubbell B
- Page 1 OPERATING AND MAINTENANCE MANUAL FOR ELECTRIC BOOSTER HEATER ELECTRIC HEATER COMPANY BASE MODEL “ B ”...
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Page 2: Warning / Caution
If questions regarding installation arise, check your local plumbing and electrical inspectors for proper procedures and codes. If you cannot obtain the required information, contact the company. HUBBELL ELECTRIC HEATER COMPANY P.O. BOX 288 STRATFORD, CT 06615 PHONE: (203) 378-2659... -
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
SECTION I - GENERAL DESCRIPTION AND CONSTRUCTION GENERAL DESCRIPTION This book describes a packaged electric booster heater that is typically used to provide 180°F sanitizing rinse water. 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 an immersion thermostatic switch that is installed and wired at the factory. The thermostat can be adjusted through a range of 100° - 195° F and is adjustable with a flat tip screwdriver. - Page 7 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 Used as a safety device, the electronic low water cut-off is used to detect a low water situation and disengage the operating coils in the magnetic contactor(s).
- Page 8 Pressure Reducing Valve An optional pressure reducing valve with built-in bypass may be supplied. This valve is shipped separately for in-line installation. Stainless Steel Outer Jacket An optional stainless steel outer jacket may replace the standard galvaneel jacket. Suspension Straps For under counter, off the floor operation an optional suspension strap may be supplied in place of the standard support legs.
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Page 9: Piping Installation
DO NOT TURN ON THE ELECTRIC POWER SUPPLY to this equipment until heater is completely filled with water and all air has been released. If the heater is NOT filled with water when the power is turned on, the heating elements will burn out. For protection against excessive pressures and temperatures, local codes require the installation of a temperature-and-pressure (T&P) relief valve certified by a nationally recognized laboratory that maintains periodic inspection of production of listed equipment of materials, as meeting the... -
Page 10: Electrical Installation
of water. To over come this condition, it is recommended that a 3/8” by-pass arrangement with a horizontal check valve be installed around the pressure regulator. This will prevent annoyance caused by the relief valve dripping or blowing off. 3. Install in-line pressure and temperature gauge, if supplied. 4. -
Page 11: Final Checks
3. After the water is heated for the first time, monitor the water temperature as described in Section III, Quarterly Inspection. Incoming Water (140°F) 1 – B Model Booster 2 – Dishwasher 3 – Pressure Regulator w/ built-in by-pass 4 – Pressure/Temperature Gauge 5 –... - Page 12 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 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 15: Quarterly Inspection
1. Monitor thermostat a. Let water heater completely heat to a designated thermostat setting. b. After thermostat satisfies (that is, when the thermostat actually clicks off), draw water from heater. c. Compare water temperature of drawn water to the temperature setting of the thermostat when it satisfies. -
Page 16: 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 17: Troubleshooting
SECTION IV – Symptom No hot water TROUBLESHOOTING Probable Cause Circuit breaker tripped at source. Blown fuse in transformer, if installed. High limit switch tripped. Loose wires. Heating element inoperable. Low line voltage. Faulty thermostat. Faulty low water cut-off, if installed. - Page 18 Water temperature below settings at all times Relief valve discharges continuously Faulty thermostat. Heating element not working on all phases 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 19: 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 20 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.
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Page 21: 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 22 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 23: 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 24: 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 25: 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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