Hubbell Electric Heater Company WATER HEATER DF User's Manual
Contents
1. No hot water Flame safeguard locked out R eset flame safeguard M anual gas valve closed Open gas valve and reset flame safeguard Blown control circuit Replace fuse No power R eset circuit breaker Gas pressure too high or too low Reset gas pressure switch and reset flame safeguard W ater not hot enough Operating control thermostat set too low Increase control thermostat setting to a higher temperature Note Higher water temperatures increase the danger of scalding Recovery rate too low for demand Input rate too low not operating at peak efficiency Call serviceman to check input rate and efficiency Check firetubes for soot Inspect and clean for scale and sediment build up W ater temperature too hot Operating control thermostat failed Call serviceman to replace control thermostat Operating control thermostat set too high A djust operating control thermostat to lower temperature W ater leaks Temperature and pressure Replace valve safety relief valve not closed If leakage source cannot be Shut off fuel and electrical supply determined close cold water inlet valve and call serviceman Gas odors Possible gas leak Shut off gas supply and call the gas company Improper combustion Call serviceman Blower wheel dirty Call serviceman Down draft in vent Call serviceman Gas train2. The manufacturer s warranty on this water heater is in effect only when the water heater is installed and operated in accordance with these instructions and local codes and ordinances or in the absence of local codes and ordinances the National Fuel Gas Code the latest ANSI 2223 1 In Canada installation should conform to the latest CAN CGAB 149 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 FOR YOUR SAFETY WHAT TO DO IF YOU SMELL GAS gt DO NOT try to light any appliance gt DO NOT touch any electrical switch gt DO NOT use any phone in the building gt Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department gt WARNING If these instructions are not followed exactly a fire or explosion may result Causing property damage personal injury or death PRECAUTIONS TANK LINING DAMAGE PREVENTION The water heater lining has been electronically inspected for continuity prior to final assembly It was found to be free of defects In order to protect the lining do not apply heavy blows or weld to the exterior pressure vessel Damage to the interior lining will void the warranty and ASME HLW stamp TANK MAINTENANCE REMOVAL OF SEDIMENT AND SCALE To keep the water heater efficient
3. burner Greater clearances may be required by local code 2 adequate uncontaminated air supply for combustion is needed If air is directly obtained from outdoors a free area of 1 square foot per 1 000 CF H Hof input is required If air is obtained from an adjacent indoor area 1 square inch per 1 000 BTU Hr of input is required If oil fired 1 gallon per hour equals 140 000 BTU Hr Combustion air inlets should be located on an outside wall away from prevailing winds and be sized to accommodate all fuel burning equipment located in the mechanical room Combustion air calculations should assume simultaneous operation of all fuel burning equipment in the equipment room 3 The water heater should not be installed in an area where combustible liquids or vapors may be present that could be ignited by the burner The installation area should not contain air contaminated with chlorinated hydrocarbons perchlorethylene or any strong oxidizing agent Combustion air containing these agents will seriously damage the burner and vessel parts thus voiding all warranties If required combustion air should be ducted from outside the building to avoid such contaminants Burners require special construction for outside combustion air applications Consult factory for details 4 The water heater should be located on a pitched floor near a suitable drain or other provisions must be made to prevent damage to areas of the building subject to water damage shoul
4. may have to be decreased Such a short cycling condition accelerates wear of burner components which can lead to early failure IMPORTANT THE MANUFACTURER S START UP REPORT MUST BE COMPLETED AND RETURNED FAILURE TO DO SO WILL VOID THE WARRANTY ALWAYS CONTACT A TRAINED SERVICE TECHNICIAN TO PERFORM START UP SHOULD FACTORY ASSISTANCE BE REQUIRED PLEASE HAVE THE WATER HEATER SERIAL NUMBER AVAILABLE Combination gas oil burners require a supply of oil for oil pump lubrication even when operating on gas Some oil burners require a supply of either natural or L P gas to operate the pilot Check burner construction for the presence of gas pilot tubing and a pilot gas pressure regulator 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 Reinstall hand hole cover fill with water and open a nearby hot water faucet to bleed out any entrapped air Be sure all tank connections are tight Leaking water causes corrosion and insulation damage 16 2 The burner manufacturer s installation and operation manual included with this manual contains a detailed start up procedure that should be studied and followed precisely 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 a
5. 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 Clean blower wheel and flame scanner when necessary The burner should be cleaned each year according to the burner manufacturer s recommended procedures A DIRTY BLOWER WHEEL WILL REDUCE EFFICIENCY AND MAY CAUSE POOR COMBUSTION SOOTING OR THE PRODUCTION OF CARBON MONOXIDE IMPORTANT A preventive maintenance program should be established to help assure a long trouble free water heater life AN ANNUAL INSPECTION SHOULD BE PERFORMED AND DOCUMENTED A COPY OF THE INSPECTION REPORT MUST BE FORWARDED TO THE MANUFACTURER FAILURE DO SO WILL VOID THE WARRANTY 18 RECOMMENDED PERIODIC INSPECTION DAILY 1 Inspect area around water heater for moisture If present determine if cause is condensation or leakage If cause is condensation ay be due to very cold incoming water Consider installation of intra tank circulator contact manufacturer for details b If cause is leakage M ay be due to leaking fitting repair as soon as possible If tank leak is suspected contact manufacturer 2 Inspect vent for corrosion If present replace corroded vent section as soon as possible Determine if cause is low temperature of combustion products less than 280 net flue temperature or the presenc
6. 3 5876 4706 3901 13961 2 ie 12 Vel 68 1 2203607 5236 1000 1250 8727 6538 5236 4363 19740 6283 1000 1250 0472 7846 6283 5226 Notes 1 Standard burners are based on a maximum gas pressure of 14 W C 2 Recovery ratings are based on 83 thermal efficiency GAS OIL BURNER EEE SENG A 125 400 665 498 309 25 1 539 150 400 898 672 539 449 385 1 6 540 698 150 600 1164 5236 6283 Note 1 Recovery ratings are based on 83 thermal efficiency 120 1 60 230 1 60 230 3 60 230 3 60 SECTION I GENERAL DESCRIPTION GENERAL DESCRIPTION This is a commercial storage water heater designed and constructed in accordance with UL and ASME requirements Its thermal efficiency and standby loss exceed the levels established by ASHRAE 90 1 and incorporated by federal EPACT legislation Given a reasonable amount of maintenance this water heating product will perform reliably for many years Its basic design is well proven over time and operating components have been selected for their reliability and widespread use in the water heating industry This philosophy also promotes availability of both parts and trained service personnel It is essential that all aspects of installation maintenance routine servicing troubleshooting and repair be planned with safety as the primary cons
7. ATURE AND PRESSURE RELIEF VALVE T amp P A listed and properly rated combination temperature and pressure relief valve shall be installed in the opening provided and marked for this purpose at the time of installation Local codes shall govern installation of relief devices 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 The discharge line must be able to withstand water temperature in excess of 210 F gt DO NOT install a valve between tank and the relief valve gt DO Install discharge line directly to an adequate open drain The discharge line must be shielded secured and plumbed to an appropriate drain to prevent scald injury gt DO NOT install a reducing coupling or other restriction in the discharge line gt DO NOT install the discharge line where it may be subject to blocking plugging or freezing gt DO NOT allow water from discharge line to contact any live electrical part Failure to install a listed and properly rated temperature and pressure relief valve could result in hazard to life bodily injury or property damage and will release the manufacturer of this water heater from any claim which might result from excessive
8. OPERATING AND MAINTENANCE MANUAL FOR POWER BURNER SERIES FORCED DRAFT COMMERCIAL WATER HEATER 7 7 8 ELECTRIC HEATER COMPANY BASE MODEL DF HUBBELL ELECTRIC HEATER COM PANY 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 Do not use or store gasoline or any other flammable vapors liquids or materials in the vicinity of this or any other appliance Due to the rigors of transportation all connections should be checked for tightness before heater is placed in operation Safety relief valve must be installed in tapping provided KEEP AWAY FROM LIVE ELECTRICAL CIRCUITS Do not perform any maintenance make any adjustments or replace any components inside the control panel with the high voltage power supply turned on Under certain circumstances dangerous potentials may exist even when the power supply is off To avoid casualties always turn the power supply safety switch to off turn the charge or ground the circuit before performing any maintenance or adjustment procedure Installation and service must be performed by a qualified installer service agency or the gas Supplier City state and national codes governing installation of commercial water heaters must be followed and take precedence over recommendations in this manual
9. ain Annually ServiceTech leakage tests refer to instructions Combustion safety controls flame W eekly Operator Close manual fuel supply for the pilot and main failure fuel valve s check safety shutdown timing log result Flame signal strength W eekly Operator W ith flame signal meter installed read and log for both pilot and main flames Notify service organization if readings are very high very low or fluctuating Refer to instructions for nominal values Pilot turndown test As required Service Tech Required after any adjustment to flame scanner annually mount or pilot burner verify annually refer to instructions Low water fuel cutoff and alarm Daily weekly Operator Refer to instructions and perform a slow drain Semiannually test High limit safety thermostat control Annually ServiceTech Refer to instructions Operating thermostat control Annually ServiceTech Refer to instructions V ent draft fan and air pressure M onthly Operator Refer to instructions switches High and low gas pressure interlocks Monthly Operator Refer to instructions High and low oil pressure interlocks Monthly Operator Refer to instructions Fuel valve interlock switch Annually Operator Refer to instructions Low fire start interlock Annually Operator Refer to instructions Automatic changeover control dual At least Service Tech nder supervision of gas utility fuel annu
10. ally valves As required Operator In accordance with procedure in Section V ASME Boiler and Pressure V essel Code Recommended Rules for Care and Operation of Heating B oilers Inspect B urner Components Semiannually Operator Refer to burner instructions 20 SCALE AND SEDIMENT REMOVAL THE MANUFACTURER CANNOT CONTROL USE OF THE WATER HEATER WATER CONDITIONS OR MAINTENANCE THE WATER HEATER WARRANTY DOES NOT 21 BURNER SERVICE IMPORTANT 15 RECOMMENDED THAT REPLACEMENT PARTS OR ASSEMBLIES OBTAINED FROM THE WATER HEATER OR BURNER MANUFACTURER The enclosed burner installation and operation manual contains service suggestion troubleshooting section and a periodic checklist that recommends a variety of component tests designed to help maintain the water heater s reliable efficient and safe operation For additional assistance contact the burner manufacturer s customer service department Availability of spare parts varies from area to area The burner material list provides the part number you require for obtaining replacements If the item is not available locally contact the service department at the location listed on the cover page 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 als
11. 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 Monthly inspections should be performed to determine a time span for removing any sediment within the unit This should become the basis for a routine maintenance schedule It is recommended that high pressure water be used to purge any accumulation of sediment through the drain valve opening or the hand hole ANODE MAINTENANCE The water heating industry knows that many water heaters are installed in areas where the water supply can be abnormally corrosive due to low pH or an excessive amount of dissolved oxygen Because of our commitment to provide clear water in all areas an anode has been provided to help counteract the effects of these factors Periodic inspection and if necessary replacement is required to assure the anodes effectiveness WATER QUALITY pH LEVEL M aterials used in the water heater to prevent corrosion have been selected for their compatibility with most domestic water supplies However significantly alkaline water pH 7 5 or higher or acidic water pH 6 5 or lower can result in abnormal scale formation or seriously attack these materials and cause premature corrosion If the pH of incoming supply water does not fall between 6 5 and 7 5 it must be treated to prevent damage to internal water heater surfaces and other building plumbing components SAFETY TEMPER
12. d the heater or plumbing leak A drain is required for relief valve discharge as well as routine cleaning and flushing of the tank The heater must be installed in a level position Shim under skids if necessary WATER CONECTIONS NOTE The most effective means for preventing deterioration from accelerated corrosion due to galvanic and stray current is the installation of dielectric fittings unions The installation of these fittings is the responsibility of the installing contractor Water connections are made to the cold water inlet and hot water outlet as shown on the supplied water heater drawing Dielectric fittings are provided to minimize the formation of galvanic corrosion some jurisdictions require the use of dielectric fittings Shut off valves and unions should 11 000 CF Hr of Gas 1 000 000 BTU Hr 7 14 GPH of 2 fuel oil 11 be installed so the heater may be disconnected for servicing if necessary Hot water and return circulation lines should be insulated 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 PIPING MULTIPLE WATER HEATERS A parallel connection see the following diagram allows heated water from multiple heaters to flow into the system to serve peak loads that can occur in a short time period Pressure drop is re
13. djusting oil pressure to the burner at 300 psi pressure may have to be slightly reduced to obtain clean smoke free combustion TEMPERATURE ADJUSTMENT The upper operating control thermostat shuts off the burner when its temperature setting is reached The lower operating control thermostat can be adjusted to vary the temperature that activates the burner The unit is also equipped with a high limit safety control preset at 180 F For energy efficient operation of your water heater the recommended upper temperature setting is approximately 130 F Facilities with small children or invalids may require a 120 F or lower temperature setting to reduce the risk of scald injury Some states require a lower temperature setting Check with your gas supplier for local requirements governing the temperature setting Remember that no water heating system will provide an exact temperature at all times Allow a few days of operation to determine the correct temperature setting consistent with your needs A lower temperature setting can cause condensation but that does not mean your tank is leaking Many reported tank leaks on installation are proven to be condensation To avoid unnecessary inconvenience and expense make sure the tank is leaking before calling a service person 17 SECTION IV SCHEDULED MAINTENANCE AND SERVICING WARNING CAUTION Before performing any maintenance procedure turn off the water heater main disconnect switch before
14. duced and total storage capacity is available for immediate use _ Hot Water Out 289 S 12 ELECTRICAL CONNECTIONS Electrical connections to the water heater should conform to the National Electrical Code or the code legally authorized in your locality A fused disconnect switch should be used in the burner control circuit The contractor shall run the properly sized electrical service to the terminals indicated on burner wiring diagram R efer to burner manufacturer s manual for specific electrical requirements VENTING This non condensing water heater is designed to exhaust into its own independent vent or into an existing vent system that serves other appliances In all cases a negative pressure must be maintained within the venting system to prevent the leakage of combustion products 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 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 When a relatively high negative draft occurs in a vent a draft regulator sized to the vent diameter should be installed and adjusted to begin opening at a negative draft of 0 1 in W C A draft regulator sh
15. e of contaminated combustion air Correct either condition immediately MONTHLY 1 Drain heater remove hand hole cover and inspect for sediment accumulation Remove any sediment and inspect more frequently to determine an appropriate schedule for sediment removal NOTE FAILURE OF THE WATER HEATER DUE TO SEDIMENT OR SCALE ACCUMULATION IS NOT COVERED BY THE WARRANTY 2 Test combustion products for the presence of carbon monoxide CO above a 200 ppm concentration If necessary adjust burner to reduce CO concentration 19 RECOMMENDED PERIODIC TESTING TESTING HOW COMPLETED ITEM OFTEN BY REMARKS Gauges monitors and operating log Daily Operator M ake visual inspection and record readings Instrument and equipment settings Daily Operator M ake visual check against recommended specifications Firing rate W eekly Operator Verify factory settings Semiannually ServiceTech factory settings Annually ServiceTech Check with combustion test Flue vent stack or outlet dampers M onthly Operator M ake visual inspection of linkage check for proper operation Igniter W eekly Operator M ake visual inspection check flame signal strength if meter fitted see Combustion Safety Controls Fuel valves pilot and main W eekly Operator Operate burner Using a manometer or pressure primary and secondary gauge check pressure to the burner as required on rating label Pilot and main gas or oil tr
16. eets Ceramic Lined Combustion Chamber Heavy Duty Base Anode Cover Turbulators For Maximum Heat Transfer Non Condensing 83 hermal Efficiency Sacrificial Anode With Status Indication T amp P Relief Valve Hi Limit Control Upper Operating Thermostat Hand Hole Cleanout Cold Water Inlet With Dielectric Fitting Flame Observation Port Lower Operating Thermostat Forced Draft Fuel Burner Gas Oil or Combination GAS BURNER De eee Tae ee ae 1 Pie 86 120180 DE DEMEME sea 663 498 399 332 24 1 6 399 86 399 539 150 400 898 672 539 449 385 1 6 54 fa 86 120 1 60 564 I 125 938 710 564 470 soa 1 8 565 u 698 150 600 1164 871 698 582 499 1 6 700 a 86 120 1 60 1072 150 800 1787 1338 1072 893 766 1 6 11075 99 120 1 60 1257 180800 204 1569 1257 1047 1 6 420 el 120160 1596 150 275 2660 1992 1596 1330 1140 112 6 1600 vs 99 120 1 60 2194 325 1250 3657 2750 2194 1828 1567 112 8 2200 s 99 120 1 60 2493 325 1250 4156 3113 2493 2078 181 2 2500 71 230 1 60 3072 500 1250 5120 3836 3072 2560 2194 2 3080 112 112 230 41 60 2640 60 1250 16067 9040 agas agao iz azos 950 1250 1784
17. ering pressure drop to furnish gas at a pressure necessary for the burner to develop rated capacity and the CFH to handle all fuel burning equipment attached to the line A drip leg should be installed ahead of the burner piping connection See burner manufacturer s manual for piping detail 2 Piping or tubing from regulator vents shall be routed outside the building and must be the same diameter as the regulator venting ports Provide no traps in the vent lines and terminate away from all doors windows and air intakes serving HVAC equipment V ent termination shall face downward with a screen mesh cover to prevent insects and debris from entering If regulator vents are combined use tubing or pipe equal to the total cross sectional area of the individual vents Normally open vent valves must be separately vented NOTE High and low gas pressure switches must be vented separately from those of the main and pilot regulators Termination of vents shall be the same as for regulators 3 Before gas is turned on be sure the gas line has been checked for leaks Check to see that there are no open fittings and that the burner main manual valve and pilot manual valve are closed OIL TANK AND PIPING 1 Tank construction and installation must meet all local codes and should meet the specifications recommended by Underwriters Laboratories 2 REFER TO YOUR BURNER STARTUP MANUAL FOR OIL PUMPING AND PIPING DETAILS 14 3 A Rule of Thumb to determi
18. ideration 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 SECTION II INSTALLATION WARNING CAUTION For protection against excessive pressures and temperatures local codes require the installation of a temperature and pressure T amp P relief valve certified by a nationally recognized laboratory that maintains periodic inspection of production of listed equipment of materials as meeting the requirements for Relief Valves and Automatic Gas Shutoff for Hot Water Supply Systems ANSI 221 22 1971 The National Fuel Gas Code ANSI 7223 1 and Can 1 BI 49 1 or BI 49 2 expressly prohibits the following 1 Installation of water heater in a bathroom bedroom or any occupied room normally kept closed 2 Installation of a water heater in a garage unless the unit is installed so that the burner and ignition devices are at least eighteen 18 inches above floor level and protected to avoid damage by a moving vehicle If unit is painted or insulated on the job site care should be taken not to paint or insulate over the A S M E nameplate This plate should be accessible and legible at all times to inspectors and information from this plate must be used when ordering parts from the factory HANDLING Some models have been constructed with
19. lifting lugs to permit lifting with a crane Fork lift movement rear access only is also acceptable To lift with a crane remove flue outlet adapter and connect a lifting cable to the two lifting lugs attached to the top tubesheet Be sure lifting cable and crane can support the shipping weight as shown on Bill of Lading 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 INSPECTION Inspect the water heater and burner for possible damage that may have occurred in shipping or during storage Check rating plate on the water heater and burner for compliance with specifications Be sure the electrical supply gas and or oil supply lines are adequate for the installation 10 LOCATION NOTE Do not run uninsulated water pipes in front of or directly above afresh air opening If an exhaust fan is installed in the mechanical room the combustion air inlet must allow for the fan s exhaust air volume An undersized opening may cause down drafts resulting in poor combustion sooting and carbon monoxide 1 Position the water heater 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 ona label near the
20. ne total suction for suction line sizing is to add 10 to suction determined from the burner manufacturer s instruction manual 4 Itis good practice to size the oil pump return line to the tank the same size as the selected suction line PRESSURE AND TEMPERATURE SAFETY RELIEF VALVE 1 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 N M anual R elease Lever Install into provided tapping Temperature Probe 2 Install 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 15 SECTION III START UP AND OPERATION WARNING CAUTION Temperatures above 130 54 can cause scalding Scalding temperatures are especially hazardous to young children aged or handicapped persons A serious or disabling injury can occur Note that a mixing valve installed at the hot water outlet can reduce the risk of scalding at such points of use as lavatories sinks and bathing facilities Excessively hot water may suggest that the upper operating thermostat has failed If you determine an operating control thermostat has failed it should be replaced IMMEDIATELY by a qualified service technician If the burner turns on and off every 3 to 4 minutes on a regular basis the lower control thermostat setting
21. o be installed Replacement instructions for some of these items are listed below For additional assistance contact the water heater manufacturer s customer service department 22 RELIEF VALVE 1 COO ON Overflow Piping Outlet Disconnect power from unit Shut off incoming water and boiler water supply Lift test lever on relief valve to relieve pressure in tank Disconnect overflow piping Unscrew relief valve remove assembly and replace with new one Connect overflow piping Turn on incoming water supply and check for leaks Turn safety switch to ON position Test Lever Tank Connection Temperature Probe 23 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 0 a S Cover Screw Reset Tab High Limit Only 4 Disconnect the two 2 14 gauge wires Capillary Tube 5 Remove capillary tube and bulb from thermowell 6 Remove two 2 mounting screws M ounting Screws 7 Remove control and install new high limit switch by performing above steps in reverse order Note Be sure to place capillary tube into slot in base prior to installing cover 24 SECTION V TROUBLESHOOTING See separate component amp for additional details Symptom Probable C ause Corrective Action Remedy
22. ould be installed no further than two feet away from the water heater flue outlet A vent must never be welded to the flue collector outlet All vents must be constructed in accordance with the National Fuel Gas Code and terminated on the outside of the building using a UL listed vent cap Horizontal venting through an outside wall is acceptable but an induction blower may be needed to maintain a negative draft in the vent If the water heater is vented into an existing overhead vent or breaching it is recommended the vent be designed for positive pressure in case there is positive pressure in the overhead vent 13 GAS CONNECTION PIPING FOR GAS AND COMBINATION GAS OIL BURNERS WARNING CAUTION LP UNITS liquefied petroleum L P gas is heavier than air and will remain at floor level if there is a leak 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 15 PURGED ANY GAS ACCUMULATION Be sure gas supply lines have been cleaned of all debris which could enter the regulators or the burner system and cause malfunctions or unsafe conditions Pipe connection compounds must be used AT ALL TIMES DO NOT use Teflon tape as a thread sealant 1 gas supply line must be sized consid
23. vents not vented outdoors Call serviceman Blower wheel running backward Call serviceman 25 SECTION VI MISCELLANEOUS CHARTS AND FORMULAS TORQUE VALUES es SN 2 7 0 BOLT SIZE 18 8 5 5 BRASS BRONZE 2024 74 1450 MONEL IN ca 5 44 6 32 48 79 98 26 METRIC CONVERSIONS Liters x 0 2641 Gallons Bar x 14 5 psi sH9re Liens SF uG0 psi Kg 25 ft2 Gallons x 0 003785 m3 m3 x 264 2 Gallons 1 C AT 1 8 F AT C x 1 8 32 C F 32 x 0 556 psi x 0 06896 Bar kPa x 0 1456 Lbs x 0 4536 Kg x 2 2 LI ft2 x 0 0929 m2 x 10 765 27
24. water temperature or pressure CAUTION KEEP CLEAR OF DISCHARGE LINE OUTLET It is hot enough to cause scald injury is under pressure and may splash IMPORTANT gt Periodically check combustion products to assure that carbon monoxide is kept below 0 02 200 PPM or that the is kept between 9 6 9 gt Drain the water heater for 5 minutes every day to help prevent accumulation of sediment and scale Periodically check for the presence of scale and sediment If present physically loosen and flush using high pressure water gt All startup periodic tuning and service must be performed by a trained technician familiar with the water heater and forced draft burner It is mandatory that the startup test report contained in the burner installation and operation manual be completed and a copy returned to the factory It is also important that an operating log be maintained to provide a history of water heater performance SECTION VI TABLE OF CONTENTS TITLE GENERAL DESCRIPTION INSTALLATION START UP AND OPERATION SCHEDULED MAINTENANCE AND SERVICING TROUBLESHOOTING MISCELLANEOUS CHARTS AND FORMULAS PAGE 10 16 18 25 26 MODEL DF GENERAL CONFIGURATION Vent Connection Removable Flue Collector Removable Steel Jacket 3 Insulation Hot Water Outlet With Dielectric Fitting Low Water Cut Out Pressure Vessel Seamless Copper Bonded Firetubes Drain Valve 1 2 Thick Tubesh
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