Related Manuals for Hubbell Electric Heater Company WATER HEATER DF
Summary of Contents for Hubbell Electric Heater Company WATER HEATER DF
- Page 1 OPERATING AND MAINTENANCE MANUAL FOR POWER BURNER SERIES FORCED DRAFT COMMERCIAL WATER HEATER ELECTRIC HEATER COMPANY BASE MODEL “ DF ”...
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Page 2: Warning / Caution
National Fuel Gas Code (the latest ANSI Z223.1). In Canada, installation should conform to the latest CAN/CGAB149 installation codes and/or local codes. The manufacturer of this water heater will not be held liable for any damage from failure to comply with these installation and operating instructions. -
Page 3: For Your Safety
TANK MAINTENANCE - REMOVAL OF SEDIMENT AND SCALE To keep the water heater efficient and in good working condition, inspect and clean two weeks after installation to remove any piping system debris that may have accumulated. Do not acidize this unit. - Page 4 The pressure rating of the relief valve must not exceed the working pressure shown on the rating plate affixed to the front of the water heater. The BTU/H rating of the relief valve must equal or exceed the water heater input shown on the rating plate. The relief valve discharge line must terminate 6 inches above the floor drain or externally to building.
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Page 5: Table Of Contents
SECTION TITLE GENERAL DESCRIPTION INSTALLATION START UP AND OPERATION SCHEDULED MAINTENANCE AND SERVICING TROUBLESHOOTING MISCELLANEOUS CHARTS AND FORMULAS TABLE OF CONTENTS PAGE #... -
Page 9: General Description
If the installer or service technician has any questions about this water heater's operation, the factory should be contacted immediately. It is also very important to properly maintain this water heater to obtain long life and maintain its high efficiency. -
Page 10: Installation
The skids are compatible with the forks of most fork lift equipment. When moving a heater into place, pick water heater up from rear (do not pick up from front or sides) with forks inside the skids. Picking up heater on outside of skids may allow forks to puncture bottom of combustion chamber. - Page 11 1. Position the water heater in a clean and dry location as close as possible to the greatest use of hot water (and the oil storage tank if used). Minimum clearances for servicing are listed on a label near the burner.
- Page 12 The cold water supply line should be insulated if subjected to freezing temperatures. When a check valve is installed in the cold water line to the water heater, a diaphragm type expansion tank suitable for potable water shall be installed in the system.
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Page 13: Electrical Connections
Several basic venting rules must always be followed. 1. The vent must be independently supported so its weight does not bear on the water heater's flue collector. 2. The vent must never be sized smaller than the flue collector outlet. It can be up to two sizes larger but, in all cases, must be sized in accordance with National Fuel Gas Code Requirements given the particular installations vent configuration and water heater input rate. - Page 14 Basements, crawl spaces, closets and areas below ground level will serve as pockets for accumulation of leaking L.P gas. Before operating the water heater, sniff at floor level. IF YOU SMELL GAS, follow applicable instructions on cover page. DO NOT OPERATE APPLIANCE UNTIL LEAKAGE IS CORRECTED AND AREA IS PURGED OF ANY GAS ACCUMULATION.
- Page 15 3. A Rule of Thumb to determine total suction for suction line sizing is to add 10% to suction determined from the burner manufacturer's instruction manual. 4. It is good practice to size the oil pump return-line (to the tank) the same size as the selected suction line.
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Page 16: Start Up And Operation
START UP 1. Fill water heater and drain to remove any residue that may have accumulated during the installation process. Remove hand hole cover and remove any material not flushed through drain. -
Page 17: Temperature Adjustment
NOTE: Rated gas input for this water heater can be established by adjusting manifold gas pressure to the value listed on the burner data plate. Rated oil input can be established by adjusting oil pressure to the burner at 300 psi (pressure may have to be slightly reduced to obtain clean, smoke- free combustion). -
Page 18: Scheduled Maintenance And Servicing
SCHEDULED MAINTENANCE AND SERVICING WARNING / CAUTION Before performing any maintenance procedure, turn off the water heater main disconnect switch before performing any cleaning or service. Also close both the pilot and main manual shutoff valves. Keep the equipment room clean. Clean the burner at regular intervals. The blower inlet can collect dust and debris from the air during operation. - Page 19 RECOMMENDED PERIODIC INSPECTION DAILY 1. Inspect area around water heater for moisture. If present, determine if cause is condensation or leakage. a. If cause is condensation - May be due to very cold incoming water. Consider installation of intra-tank circulator; contact manufacturer for details.
- Page 20 RECOMMENDED PERIODIC TESTING TESTING ITEM Gauges, monitors and operating log Instrument and equipment settings Firing rate Flue, vent, stack or outlet dampers Igniter Fuel valves: pilot and main (primary and secondary) Pilot and main gas or oil train Combustion safety controls (flame failure) Flame signal strength Pilot turndown test...
- Page 21 The rate of scale accumulation increases as the temperature of stored water increases. Sediment and scale accumulation in a tank reduce the water heater's ability to heat water. When heating energy cannot be effectively transferred to the water, tank metal can overheat. Overheating can cause the metal to lose its structural strength which can result in tank leakage.
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Page 22: Burner Service
WATER HEATER SERVICE Serviceable water heater components include the control and high limit thermostats, the temperature and pressure relief valve(s), the drain valve and , low water cut off. Optional components such as a temperature and pressure gauge may also be installed. -
Page 23: Relief Valve
RELIEF VALVE 1. Disconnect power from unit. 2. Shut off incoming water and boiler 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 IMMERSION TEMPERATURE HIGH LIMIT CUT-OFF, HIGH, OR LOW THERMOSTAT 1. Disconnect power from unit. 2. Remove access cover. 3. Remove high limit cover screw and cover. Reset Tab (High Limit Only) 4. Disconnect the two (2) 14 gauge wires. 5. Remove capillary tube and bulb from thermowell 6.
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Page 25: Troubleshooting
SECTION V – (See separate component O&M for additional details.) Symptom No hot water. Water not hot enough. Water temperature too hot. Water leaks. Gas odors. TROUBLESHOOTING Probable Cause Flame safeguard locked out. Manual gas valve closed. Blown control circuit. No power. -
Page 26: Torque Values
SECTION VI – 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... -
Page 27: Metric Conversions
METRIC CONVERSIONS...
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