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Summary of Contents for Hubbell CR
- Page 1 OPERATING AND MAINTENANCE MANUAL FOR INSTANTANEOUS ELECTRIC CIRCULATION HEATER ELECTRIC HEATER COMPANY BASE MODEL “ CR ”...
- Page 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 full model number and serial number when calling the factory. WARNING / CAUTION 1. Tank is to be completely filled with water and all air is to be vented before energizing.
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Page 3: Table Of Contents
SECTION TITLE PAGE No. GENERAL DESCRIPTION AND CONSTRUCTION INSTALLATION AND START-UP SCHEDULED MAINTENANCE AND OPERATION TROUBLESHOOTING SERVICING AND REPLACEMENT OF PARTS MISCELLANEOUS CHARTS AND FORMULAS... -
Page 4: General Description And Construction
SECTION I - GENERAL DESCRIPTION AND CONSTRUCTION GENERAL DESCRIPTION This book describes a packaged electric heater that is a stationary, self-contained unit. The complete assembly consists of the pressure vessel, immersion electric heating element, thermostat, safety relief valve, safety high temperature cut out, magnetic contactor(s), power circuit fusing, fused low voltage control circuit transformer, and any other required electrical operating control. - Page 5 ELECTRICAL ENCLOSURE A louvered control panel available in various sizes and with assorted types of handles is supplied. The standard cabinet is rated NEMA 1, but other NEMA rated enclosures are available, consult drawing for further information. A list of NEMA ratings are available in Section VI.
- Page 6 TEMPERATURE HIGH LIMIT SWITCH As a safety device, an immersion high temperature cut-off switch with manual reset, adjustable through a range of 100° - 240° F, is provided. The high limit must be manually reset thereafter to restart the heater. Optionally a 1/16 DIN digital controller may be used as a high-limit. Manual Reset MAGNETIC CONTACTOR The magnetic contactor(s) is a heavy-duty resistive load type rated for...
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Page 7: Installation And Start-Up
OPTIONS The following optional features may be included in your water heater. Reference included drawing specific to your heater for further details. Stainless Steel Jacket An optional stainless steel outer jacket may replace the standard galvaneel covering. This optional jacket may be painted. On / Off Control Switch A built-in non-fused On/Off disconnect switch may be supplied with the control panel to decrease the risk of injury when working with the control panel. - Page 8 HEATER PLACEMENT 1. Place the heater on a solid foundation in a clean, dry location nearest to the point of most frequent hot water use. 2. The heater should be protected from freezing and waterlines insulated to reduce energy and water waste. 3.
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Page 9: Scheduled Maintenance And Operation
SECTION III - SCHEDULED MAINTENANCE 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 heater is automatic in its operation. It will maintain water at the temperature setting of the thermostat. -
Page 10: Troubleshooting
SECTION IV – TROUBLESHOOTING Symptom Probable Cause Corrective Action / Remedy No hot water Circuit breaker tripped at Reset circuit breaker. source. On/Off switch in ‘OFF’ Turn switch to ‘ON’ position. position, if installed. Circuit breaker at control Reset circuit breaker. cabinet tripped, if installed. - Page 11 Water temperature below Faulty thermostat. Check thermostat adjustment. settings at all times Monitor thermostat as described in Section III, Quarterly Inspection. Replace if necessary. Blown fuse in element fuse Replace fuse. block, if installed. Heating element not Check to see that heating working on all phases element is working on all phases, by checking the...
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Page 12: Vservicing And Replacement Of Parts
SECTION V - SERVICING & REPLACEMENT OF PARTS WARNING / CAUTION Before servicing or replacing any part make sure to turn the power supply switch to the OFF position. MAGNETIC CONTACTOR 1. Disconnect power from unit. 2. Disconnect line and load wires to contactor. 3. - Page 13 Reset Switch 4. Disconnect the two (2) 14 gauge wires. Wires Capillary Tube 5. Remove capillary tube and bulb from thermowell 6. Remove two (2) mounting screws. Mounting Screws Remove control and install new high limit switch by performing above steps in reverse order.
- Page 14 4. Disconnect the two (2) 14 gauge wires. Wires Capillary Tube 5. Remove capillary tube and bulb from thermowell. 6. Remove two (2) mounting screws. Mounting Screws 7. Replace thermostat using reverse procedure. (Note: Be sure to place capillary tube into slot in base prior to installing cover.) HEATING ELEMENT 1.
- Page 15 9. Remove nuts and bolts from flanges. 10. Withdraw element assembly and remove gasket. Vessel Flange Gasket Flanged Element Assembly 11. Install new gasket and insert new heating element. 12. Rewire element according to the voltage and phase rating of the unit as shown below. 13.
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Page 16: Miscellaneous Charts And Formulas
SECTION VI – MISCELLANEOUS CHARTS AND FORMULAS NEMA ENCLOSURES... - Page 17 ELECTRICAL DATA FORMULAS...
- Page 18 TORQUE VALUES SILICON ALUMINUM 18-8 S/S BRASS 316 S/S MONEL BOLT SIZE BRONZE 2024-T4 IN.-LBS. IN.-LBS. IN.-LBS. IN.-LBS. IN.-LBS. IN.-LBS. 4-40 4-48 5-40 5-44 6-32 10.1 6-40 12.1 11.2 12.7 12.3 8-32 19.8 16.2 18.4 10.8 20.7 20.2 8-36 22.0 18.0 20.4 12.0...
- Page 19 NOTES...
- Page 20 P.O. BOX 288 STRATFORD, CT 06615-0288 PHONE: (203) 378-2659 FAX: (203) 378-3593 INTERNET: http://www.hubbellheaters.com/...
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