Related Manuals for Hubbell Electric Heater Company BW
Summary of Contents for Hubbell Electric Heater Company BW
- Page 1 OPERATING AND MAINTENANCE MANUAL FOR BOILER WATER OR HIGH TEMPERATURE HOT WATER (HTHW) POWERED WATER HEATER ELECTRIC HEATER COMPANY BASE MODEL “ BW and BWH ”...
- 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.
-
Page 3: Table Of Contents
TABLE OF CONTENTS SECTION TITLE PAGE # GENERAL DESCRIPTION AND CONSTRUCTION INSTALLATION AND OPERATION SCHEDULED MAINTENANCE AND SERVICING TROUBLESHOOTING MISCELLANEOUS CHARTS AND FORMULAS... - Page 6 NOMENCLATURE FOR PARTS...
-
Page 7: General Description And Construction
SECTION I - GENERAL DESCRIPTION AND CONSTRUCTION GENERAL DESCRIPTION This book describes a packaged boiler water or High Temperature Hot Water (HTHW) powered water heater which is a stationary, self contained unit. The complete assembly on a standard unit consists of the storage tank, immersion heating coil, and an ASME rated combination temperature and pressure safety relief valve. - Page 8 3. Stainless Steel – Stainless steel (type 304, 316, or 316L) is well suited for high purity applications requiring a corrosion resistant tank with minimal leaching of impurities into the water. Well suited for process, RO, and DI water systems in the pharmaceutical, food, and electronic industries.
- Page 9 CONTROL VALVE, (if supplied) A fully modulating temperature regulator (also referred to as a control valve) should be installed to regulate the flow of boiler water through the heating coil. No quick opening or snap-acting valve should be used as these can cause surges in pressure or thermal shock to the coil. If the unit is furnished with a pilot operated or self contained control valve, no external source of power is required for the valve.
- Page 10 OPTIONS The following optional features may be included in your water heater. Reference the drawing specific to your heater for further details. Single Solenoid Safety System A single solenoid safety system closes the flow of boiler water/HTHW to the heating coils should the temperature in the tank reach the high limit set point.
- Page 11 Circulating Pump Package (Type I) An intra-tank circulation pump package with On/Off switch to continuously circulate water within the tank and thereby reduce stratification may be installed. An all bronze circulator pump is used.
- Page 12 Circulating Pump Package (Type II) An intra-tank circulation pump package, with On/Off switch may be installed to continuously force circulate water over a wrapped and baffled heating coil. An all bronze circulator pump is used.
-
Page 13: Installation And Operation
SECTION II – INSTALLATION AND OPERATION WARNING / CAUTION DO NOT TURN ON THE BOILER WATER SUPPLY to this unit until heater is completely filled with water and all air has been released. If the heater is NOT filled with water when the boiler water is allowed to flow through the coil, damage to the heating coil may result. - Page 14 2. Refer to the enclosed drawing for location of piping connection. 3. 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 Install into provided tapping Manual Release Lever Temperature Probe...
- Page 15 Typical Hook-Up Diagram...
-
Page 16: Electrical Installation
ELECTRICAL INSTALLATION If the unit is furnished with a pilot or self contained control valve, no external source of power is required for the valve. (See enclosed operation and maintenance manual for specific valves). If the unit is furnished with an air or electric control valve, see enclosed drawings for required connections. - Page 17 5. After control valve adjustments have been made and the desired temperature has been reached, open the valve on the hot water outlet and the building recirculation line. 6. Tightening of some gasketed joints may be required after unit has been heated. 7.
-
Page 18: Scheduled Maintenance And Servicing
SECTION III - SCHEDULED MAINTENANCE AND SERVICING WARNING / CAUTION Before performing any maintenance procedure, make certain boiler water supply and electrical power supply is OFF and cannot accidentally be turned on. QUARTERLY INSPECTION 1. Monitor thermostat a. Let water heater completely heat to a designated thermostat setting. b. - Page 19 7. If the unit is dismantled for any reason, it should be reassembled using new gaskets. 8. Do not tighten bolts until gaskets are properly seated. 9. Exterior of unit should be cleaned and if necessary repainted. 10. When tightening bolts in the element head, tighten the bolts in a criss-cross pattern. This will evenly distribute pressure around the flange, and help prevent warping.
- Page 20 11. Convection packages may be equipped with an integral circulator. This circulator should be serviced per the enclosed pump O&M manual. 12. If unit is supplied with anode rod, it shall be inspected for excessive wear. 13. Packing on valves and regulators should be checked for leaks and repaired or replaced as necessary.
- Page 22 SINGLE SAFETY SOLENOID SYSTEM (if installed)
- Page 23 DOUBLE SAFETY SOLENOID SYSTEM (if installed)
-
Page 24: Troubleshooting
SECTION IV – TROUBLESHOOTING (See separate component O&M for additional details.) Symptom Probable Cause Corrective Action / Remedy Gradual loss of heating Tubes are fouled. Clean tubes per Section III, annual capacity. scheduled maintenance. Excess silt in bottom of tank. Drain and flush tank per Section III , annual scheduled maintenance. - Page 25 Excessive vibration. High rate of flow beyond Consult factory. design conditions. Under sized piping to the Re-pipe lines to unit using proper unit. sized lines. Water hammer. Undersized return lines. Re-pipe return line using proper sized lines. Insufficient slope on return Increase slope on return lines.
-
Page 26: Miscellaneous Charts And Formulas
SECTION V – MISCELLANEOUS CHARTS AND FORMULAS 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... - Page 27 METRIC CONVERSIONS...
Need help?
Do you have a question about the BW and is the answer not in the manual?
Questions and answers