American Water Heater GAS-FIRED COMMERCIAL WATER HEATER Fan User Manual
Contents
1. Model Designation Capacity Input A B Litres KW hr m m 108 5 246 1 117 3 1 87 1 64 20 4 15 3 NAT ONLY 88 0 17 8 124 6 148 0 50 8 28 in FT 71 2 Er 1 i SEE o 19 38 in 49 3 1 1 Us i Figure 3 Flue Damper Models and Non Flue Damper Models Clearances Capacity Input A B C D E Sides and Flue or Ceiling GAL BTU hr in in in in in Rear Vent in in in 38 155000 5100 4300 3475 33 75 6 2 6 20 Clearances Capacity Input A B D E Sides and Flue or Ceiling Litres kW hr m m m m cm Rear Vent cm cm cm 50 8 Installation Minimum Clearances continued 11 28 in 2 cm 71 153 e 4 63 in 11 8 cm Figure 4 Non Flue Damper Models Clearances Capacity Input A B Sides and Flue or Ceiling GAL BTU hr in in in in in Rear Vent in in in so 180000 170 19 66 25 64 38 156 00 55 13 2 e 20 199 999 64 38 156 00 gt 13 20 235 000 LP 250 000 70 13 66 25 64 38 156 00155 13 20 Ea Ad od d 20 235 000 LP 100 199 999 75 50 69 88 61 88 60 38 5688 2 6 20 _2 6 20 Model Designation Clearances Capacity Input A B Sides and Flue or2. Do not force ance if service is to be performed General Operation Lighting and Shutdown continued 25 Spark Ignition Models FOR YOUR SAFETY READ BEFORE LIGHTING WARNING If you do not follow these instructions exactly fire or explosion may result causing property damage personal injury loss of life A This appliance is equipped with an igni f you cannot reach your gas sup tion device which automatically lights the plier call the fire department pilot Do not try to light the pilot by hand C Use only your hand to push in or turn the BEFORE OPERATING smell all around the gas control knob Never use tools If the appliance area for gas Be sure to smel nob will not push in or turn by hand next to the floor because some gas is don t try to repair it call a qualified ser heavier than air and will settle on the floor vice technician Force or attempted WHAT TO DO IF YOU SMELL GAS repair may result in a fire or explosion Do not try to light any appliance Do not use this appliance if any part has Do not touch any electric switch do een under water Immediately call a not use any phone in your building qualified service technician to inspect the Immediately call your gas supplier appliance and to replace any part of the from a neighbor s phone Follow the control system and any gas control which gos supplier s instructions as been under water OPERATING INSTRUCTIONS
3. 1 STOP read the safety information above 5 Turn gas control knob clockwise to on this label off 2 Set the thermostat to lowest setting 6 Wait five 5 minutes to cleor out any gos Turn off all electric power to the appliance f you then smell gas STOP Follow in This appliance is equipped with an igni the sofety information above on this label ion device which automatically lights the f you don t smell gas go to next step pilot Do not try to light the y hand Turn gas control knob counterclockwise sA to ON B 8 Turn on all electric power to the appliance 9 Set thermostat to desired setting f the appliance will not operate follow the nstructions Turn Off Gas To Appliance KNOB 4 and call your service technician or gas SHOWN IN supplier OFF POSITION TO TURN OFF GAS TO APPLIANCE 1 Set the thermostat to lowest setting 3 Turn gas control knob clockwise w to 2 Turn off all electric power to the appli OFF ance if service is to be performed General Operation continued 26 Temperature Adjustment The temperature selector knob of the thermostat has been adjusted to its lowest setting when shipped from the factory The detent on the thermostat temperature scale shown below is the preferred starting point for setting the temperature control For energy efficient operation of your water heater the suggested initial tem
4. of reported tank leaks on installation are proven to be condensation To avoid unnecessary expense and inconvenience make sure the tank is leaking before calling a service person PREFERRED STARTING TEMPERATURE SET POINT Figure 5 27 General Operation Temperature Adjustment continued DANGER Hotter water increases the risk of scald injury Scalding may occur within five 5 seconds at temperature setting of 135 F 57 C To protect against hot water injury install an anti scald tempering valve in the water system This valve will reduce point of discharge temperature by mixing cold and hot water in branch water lines A licensed plumbing professional or local plumbing authority should be consulted Note This water heater is equipped with an energy cut out device to prevent overheating Should overheating occur or the gas supply fail to shut off turn off the manual gas control valve to the appliance and call qualified service technician Note Whenever the water heater is filled with cold water condensate will form on the cool tank surface and drops of water will fall on the hot burner and combustion chamber surfaces producing a sizzling noise Condensation is normal and does not indicate a leak It will disappear when the tank becomes heated An automatic gas shut off device ECO is incorporated in the thermostat which will shut off all gas supply to the burner and pilot if the water heater temperature
5. Disconnect sensor leads from electronic control module and measure resistance of sensor s with ohmmeter Sensors O K Disconnect ECO leads and measure resistance with ohmmeter Result Is resistance between 700 and 30K ohms see page 38 YESV NO Is water temperature greater than 210 F 99 C and ECO resistance less than 10 ohms Action Taken Sensor s may be shortened or open Check for loose broken or shorted wires Replace sensing bulb s if necessary Replace sensing bulb with ECO limit and check out balance of system shorted YES NOL Is resistance greater than 4800 ohms at minimum temperature setting checks Disconnect potentiometer leads from electronic control module Measure resistance of potentiometer with for short ohmmeter YESL NO gt Potentiometer O K Replace electronic control module Reconnect all leads and check out system If water temperature is too cold or heater does not come on proceed as follows Replace electronic control module Reconnect all leads and check out system Action Taken Check power supply transformer Correct as necessary Thermostat relay is not closing Check thermostat setting Refer to thermostat troubleshooting below Result Is voltage between 21 5 and 28 5 VAC YES Check for voltage at N O thermostat terminals terminal to meter to ground Is voltage between 21 5 and 28 5 VAC YES Test or Condition Start C
6. cap the discharge line It is recommended that a minimum clearance of four 4 inches 10 2 cm be provided on the side of the water heater for servicing and maintenance of the combination temperature and pressure relief valve Do not place a valve between the combination temperature and pressure relief valve and the tank Installation Water Connections continued 19 WARNING Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank for a long period of time generally two weeks or more Hydrogen gas is extremely flammable To prevent the possibility of injury under these conditions we recommend the hot water faucet to be open for several minutes at the kitchen sink before you use any electrical appliance which is connected to the hot water system If hydrogen is present there will be an unusual sound such as air escaping through the pipes as hot water begins to flow Do not smoke or have open flame near the faucet at the time it is open This water heater can deliver scalding temperature water at any faucet in the system Be careful whenever using hot water to avoid scalding injury Certain appliances such as dishwashers and automatic clothes washers may require increased temperature water By setting the thermostat on this water heater to obtain the increased temperature water required by these appliances you may create the potential for scald injury To protect against injury
7. exceeds 200 F 93 C Should the ECO function open the water temperature should be reduced to approximately 120 F 49 C and follow applicable Lighting Instructions page 25 or 26 to place the water heater in operation If a problem exists contact your dealer for service It is recommended that all service work be performed by a qualified service agency If the water heater is to remain idle for 30 days or more or is subjected to freezing temperatures while shut off the water heater and piping should be fully drained See page 22 To Drain the Water Heater and the drain valve should be left fully open AWARNING Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank for a long period of time generally two weeks or more Hydrogen gas is extremely flammable To prevent the possibility of injury under these conditions we recommend the hot water faucet to be open for several minutes at the kitchen sink before you use any electrical appliance which is connected to the hot water system If hydrogen is present there will be an unusual sound such as air escaping through the pipes as hot water begins to flow Do not smoke or have open flame near the faucet at the time it is open 28 General Operation continued Burner Flame Check At the time of installation and at periodic intervals about every 3 months visual check of the pilot and burner flames should be made to determi
8. the rating plate for replacement parts Locating The Water Heater INSTALLATION WARNING Water heaters are heat producing appliances To avoid damage or injury there shall be no materials stored against the water heater and proper care shall be taken to avoid unnecessary contact especially by children with the water heater components UNDER NO CIRCUMSTANCES SHALL FLAMMABLE MATERIALS SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER VENT AIR INTAKE SYSTEM OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER OR VENT AIR INTAKE SYSTEM This water heater shall NOT be installed in any location where gasoline or flammable vapors are likely to be present unless the installation is such to eliminate the probable ignition of gasoline or flammable vapors The location of this water heater is of the utmost importance Before installing this water heater you should read the Installation section of these instructions After reading these Installation and Operating Instructions select a location for the water heater where the floor is level and is easily accessible to water lines gas supply type identified on the rating plate an adequate open drain and a chimney or exhaust gas vent DO NOT locate the water heater where water lines could be subjected to freezing temperatures Make sure the cold water pipes are not located directly above the gas control so that condensate during humid
9. 3 6 2 6 20 100 300 000 300 000 75 44 65 19 5638 4 56 23 7 L2 6 20 399 9991375 000 71 06 50 450 000 425 000 80 505 000475 000 Model Description i Input KW hr ica a ted Litres 7 1 90 1 66 1 43 11 6 58 4 15 2 Ezi o 15 3 50 L153 so 15 3 60 15 3 50 15 3 5 58 4 66 0 1 90 1 66 1 43 11 6 58 4 73 3 1 90 1 66 1 43 11 6 58 4 15 2 152 res 116 584 102 181 1 53 131 25 9 15 124 6 178 158 131 25 9 254 1 1 o cm s oo o o o 8 1 N A Denotes not available Installation Minimum Clearances continued 9 28 in 7144 cm p H 1 1 28 88 in 73 4 10 38 f I Figure 2 Non Flue Damper Models Model Designation Clearances Input A B Sides and Flue or Ceiling BTU hr in in in in in 64 38 NAT ONLY 80 425 000 6 80 505000 81 00 75 38 6425 10f 6 6 Model Designation Capacity Input A B Ceiling Litres KW hr m m cm 246 1 117 3 1 82 1 64 50 8 NAT ONLY Installation Minimum Clearances continued 10 Flue Damper Models Figure 2 Capacity Input A B in n 370 000 65 399 999 73 38 64 38 80 80 300 000 25 000 505 000
10. 39 Outlet Nipple 19 Control Box Spark Ignition Models 40 Collector Head 41 Pilot Shield 42 Scale Plate THE FOLLOWING INSTRUCTIONS ARE FOR INSTALLATION OF QW GAS WATER HEATERS SUITABLE FOR WATER POTABLE HEATING AND SPACE HEATING 1 All piping components connected to this water heater for space heating applications must be suitable for use with potable water 2 Toxic chemicals such as those used for boiler treatment shall not be introduced into potable water used for space heating 3 This water heater shall not be connected to existing heating system or component s previously used with a non potable water heating appliance 4 When the system requires water for space heating at temperatures higher than required for other means such as tempering valve shall be installed to temper the water for those uses in order to reduce the scald hazard potential Please refer to the illustrations below and on the following pages for suggested piping arrangements ANTI SCALD TEMPERING VALVE SHUT OFF VALVE L 1 COLD WATER INLET NIS LLL TEMPERED POTABLE WATER a SUPPLY TO HEAT EXCHANGER g RETURN FROM NW HEAT EXCHANGER Suggested Piping Arrangement For Side Connections 40 SUPPLY TO HEAT COLD WATER INLET TEMPERED PO
11. 52 5 660 165 5 682 666 5 761 379 5 943 984 5 954 492 5 988 117 Other U S and Foreign patents applications pending Current Canadian Patents 1 272 914 1 280 043 1 289 832 2 045 862 2 112 525 Complete the following information and retain for future reference Model No Serial No Service Phone Days Nights Address Supplier Supplier Phone No TYPICAL INSTALLATION 32 DIELECTRIC UNION VENT CONNECTOR TO CHIMNEY VENT PIPE MIN 1 4 6 4 mm RISE PER LINEAR FOOT ANTI SCALD TEMPERING DRAFT DIVERTER DIELECTRIC UNION HEAT TRAP 6 15 3 cm MIN HOT WATER OUTLET TO FIXTURES COLD WATER SUPPLY GAS SUPPLY HEAT TRAP 6 15 3 cm MIN cow WATER SUPPLY MANUAL SHUT OFF VALVE TEMPERATURE AND PRESSURE RELIEF VALVE RELIEF VALVE DISCHARGE LINE PIPE TO SUITABLE OPEN DRAIN HAND HOLE CLEAN OUT MANUAL SHUT OFF GAS VALVE HOT WATER OUTLET COLD WATER INLET CONTROL BOX GROUND JOINT UNION DRIP LEG r 6 15 3 cm Id DRAIN PAN PIPE TO SUITABLE OPEN DRAIN DRAIN VALVE Operating and Troubleshooting Guide Sequence of Normal Operation Electronic Thermostat with Intermittent Pilot Ignition 33 1 The electronic thermostat controls the 24 volt circuit to the ignition control When the thermostat contacts close a 24 volt circuit is completed from the transformer through the thermostat relay to
12. Ceiling cm cm 3028 528 179 169 1 64 143 140 5 1 15 3 50 8 68 9 LP 302 8 73 3 1 79 1 69 1 64 1 43 1 40 5 1 15 3 50 8 68 9 LP 3710 528 2 06 197 192 171 1 68 50 8 371 0 73 3 2 11 1 97 1 92 1 71 5 1 15 3 50 8 68 9 LP 50 8 50 8 Installation Minimum Clearances continued 12 Flue Damper Models Figure 4 Clearances Capacity Input A B C D E Sides and Flue or Ceiling GAL BTU HR in in in in in Rear Vent in in in 80 180 000 71 88 66 25 64 38 5600 55 13 2 6 20 199 999 71 88 66 25 64 38 56 00 55 13 2 20 NN E Edid 235 000 LP 98 199 99 8288 77 25 75 38 6700 66 13 2 6 20 235 000 LP 60 38 56 88 2 6 20 60 38 56 88 2 6 20 68 9 LP 302 8 73 3 1 83 1 69 1 64 1 43 1 40 5 1 15 3 68 9 LP 3710 528 2 11 197 192 171 1 68 371 0 73 3 2 11 1 97 1 92 1 71 5 1 15 3 68 9 LP 5 1 378 5 52 8 1 92 1 78 1 58 1 54 1 45 15 3 Clearances Capacity Input A B C D E Sides and Flue or Ceiling Liters m m m m m Rear Vent cm cm cm The following notes apply to the tables accompanying Figures 1 4 1 models with flue dampers and or above 400 000 BTU per hour input employ a spark IID ignition system and requires 120 volt AC electric supply 2 Denotes minimum clearances to combustible material Some models may have different
13. GAS FIRED COMMERCIAL WATER HEATER Spanish language version of these instructions is available by contacting the company listed on the rating plate La versi n esp nola de estas instructiones se puede obtener escrible a la fabrica cuyo nombre aparece en la placa de especificaciones INSTALLATION amp OPERATING INSTRUCTION MANUAL WARNING If the information in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or death FOR YOUR SAFETY 7 Do not store or use gasoline or other flammable combustible or corrosive vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building 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 _ Installation and service must be performed by a qualified installer service agency or the gas supplier For safety convenience and best performance we recommend this water heater be installed and serviced by a plumbing professional 238 39387 00H REV 7 00 TABLE OF CONTENTS INSTALLATION INSTRUCTIONS FOR POTABLE WATER AND SPACE HEATING This gas fired water heater is design certified by the American Gas Association Laboratories under the applicable American Nation
14. TABLE WATER RETURN FROM EXCHANGER 5 Suggested Piping Arrangement For Top Connections El mA COLD WATER INLET TEMPERED POTABLE WATER SUPPLY TO HEAT EXCHANGER RETURN FROM HEAT EXCHANGER Suggested Piping Arrangement For Side Connections If Applicable 41 NOTES 42 NOTES 43 NOTES 44
15. al Standard Z21 10 1 or 221 10 3 as indicated on the rating plate available from the American Gas Association 1515 Wilson Blvd Arlington VA 22209 GENERAL INFORMATION The warranty for this water heater is in effect only when the water heater is installed adjusted and operated in accordance with these Installation and Operating Instructions The warranty does not cover damage or injury caused by the use of any energy saving devices other than those authorized by the manufacturer in conjunction with this water heater The use of unauthorized energy saving devices may decrease the life of the water heater and endanger life and or property The manufacturer will not be liable for any damage injury or loss of life resulting from alteration and or failure to comply with these instructions This water heater has been equipped for use with one type of gas only Compare the information provided on the rating plate affixed to the front of the water heater making sure that the gas stated on the rating plate is the same as the gas to be used ACAUTION Do not attempt to use this water heater with any gas other than the type listed on the rating plate Do not attempt to convert this water heater for use with a gas other than the type for which it is equipped Failure to use the proper gas can create an unsafe condition resulting in property damage bodily injury or death Consult your local gas supplier or gas company if there are any que
16. and pressure relief valve hot water will be released under pressure Be careful that any released water does not result in bodily injury or property damage 7 Atleast once a year check the combination temperature and pressure relief valve to insure that the valve has not become encrusted with lime Lift the lever at the top of the valve several times until the valve seats properly without leaking and operates freely 8 Monthly drain off a gallon of water to remove silt and sediment AWWARNING THIS WATER MAY BE HOT 9 Ifthe combination temperature and pressure relief valve on the appliance discharges periodically this may be due to thermal expansion in closed water supply system Contact the water supplier or local plumbing inspector on how to correct this situation Do not plug the combination temperature and pressure relief valve outlet 10 All models are equipped with cleanout opening to aid in removal of hard water deposits from the tank bottom If this water heater operates under hard water conditions the following should be performed at least every 3 months Drain the water heater Remove the cleanout jacket cover and tank cover When cleaning the tank care must be taken to avoid trying to break deposits loose as this could damage the glass lining and shorten the life of the water heater After cleaning replace the cleanout tank cover and jacket cover and refill with water 11 A combination sacrificial anode rod h
17. cases the water heater should be installed in a separate room with the combustion and ventilation air supplied directly from outdoors as previously described All Air From Inside the Building The confined space shall be provided with two permanent openings communicating directly with an additional room s of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space The total input of all gas utilization equipment installed in the combined space shall be considered in making this determination Each opening shall have a minimum free area of 1 1 2 1000 BTU 2 54cm 0 29kW per hour of the total input rating of all gas utilization equipment in the confined space but not less than 100 square inches 254 One opening shall be within 12 inches 30 5 cm of the top and one within 12 inches 30 5 cm of the bottom of the enclosure Unconfined Spaces In unconfined spaces in buildings infiltration may be adequate to provide air for combustion ventilation and dilution of flue gases However in buildings of tight construction for example weather stripping heavily insulated caulked vapor barrier etc additional air may need to be provided using the methods described above under CONFINED SPACES All Air From Outdoors or ENGINEERED INSTALLATIONS Specially Engineered Installations The requirements noted under CONFINED SPACES above shall not necessarily govern when special eng
18. clearances Check the label on the front of the water heater to verify proper installation clearances 3 Model number may have a suffix N for natural gas or X P or L for liquefied petroleum LP gases Some models may have A as a suffix or prefix Check the rating plate on front of the water heater for model number verification Installation continued 13 Venting WARNING The vent system must be installed properly Failure to properly install the vent system could result in property damage personal injury or death This water heater has been shipped with a draft diverter for which it was designed with reference to the horizontal and vertical planes If removed the draft diverter shall be replaced in the same position and secured to the jacket top by the screws with which it was installed This water heater must be connected to a masonry chimney or venting system approved by local codes or ordinances The vent connector used to attach the draft diverter outlet to the chimney or approved vent must be of the same diameter as the draft diverter outlet or larger For proper venting in certain installations a larger vent connector may be needed Consult venting tables in ANSI standard 2223 1 latest edition National Fuel Gas Code and CAN CGA B149 1 or B149 2 latest editions or local code officials for proper application for your area Flue Damper Refer to Figure 5 and follow these instructi
19. ding beyond the full width and depth of the appliance by at least three 3 inches 7 6 cm in any direction or if the appliance is to be installed in an alcove or closet the entire floor shall be covered by the panel The minimum clearances to combustibles for this water heater are given in the tables on pages 10 through 13 A minimum of 24 inches front clearance shall be provided for inspection and servicing If it is necessary to install this water heater in an alcove on combustible flooring with clearances from combustible materials as shown in the tables on pages 10 through 13 ACAUTION The National Fuel Gas Code ANSI 2233 1 latest edition and CAN CGA B149 1 or latest edition expressly prohibits the following a Installation of a water heater in a bathroom bedroom or any occupied room normally kept closed b 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 45 8 cm above floor level and protected to avoid damage by a moving vehicle Installation Minimum Clearances continued 8 30 25 in 76 9 cm F LJ 4 23 38 in 59 4cm m Non Flue Damper Models and Flue Damper Models Model Description Input BTU hr 880 Figure 1 199 9991199 999 74 88 100 250 000 225 000 7488 6519 756 387 456 25 6 2 6 20 100 270 000 250 000 74 88 65 19 56 38 456 2
20. e is reenergized and the ignition trial period is reestablished The same sequence occurs during a power or gas supply interruption 5 The main burners continue to operate until the water temperature in the tank increases enough to cause the thermostat contacts to open When the thermostat contacts open the 24 volt power is interrupted to the ignition control module and the gas valve closes The flue damper on D models closes 6 If for some reason thermostat contacts fail to open then the high temperature limit ECO contacts in the thermostat sensor open and interrupts power to the pilot valve causing the pilot to extinguish The ignition module senses the pilot outage and attempts to relight the pilot by reestablishing the sparking at the electrode as stated in paragraph 3 above Since the pilot valve circuit is open the pilot will not ignite and the system will go into lockout mode after 3 ignition trials In the lockout mode the ignition system will remain shutdown until the control is reset by interrupting power to the ignition module The ECO will not reset to close the contacts until the tank water temperature drops to between 100 F 38 C and 160 F 71 C If the ECO contacts open the cause for the high water temperature should be determined before resetting the ignition system Troubleshooting Procedure for Electronic Thermostat If water temperature is too hot proceed as follows 34 Test or Condition Start
21. ent depending on the amount of use and the operating conditions of the water heater Regular inspection and maintenance of the water heater will help to insure safe and reliable operation 1 Annual checks of the ignition systems millivolt and electronic temperature controls and any other water heater controls are necessary to ensure proper operation Also all safety shut off valves must be checked to verify proper operation and tightness 2 The flow of combustion and ventilation air MUST NOT be restricted Clear the combustion air openings of any dirt dust or other restrictions WARNING The ventilation air system may be HOT 3 Atall times keep the water heater area clear and free from combustible materials gasoline and other flammable vapors and liquids 4 Bi annually conduct a visual check of the pilot and burner flames to determine that they are burning properly See Burner Flame Check section on page 29 for example of proper burner flame pattern Maintenance continued 30 5 Annually remove the main burner rack assembly to clean orifices and related parts of any dirt or other foreign material Inspect the burner ports for obstructions or debris and clean with a wire brush vacuum or use a mild detergent solution to clean as needed NOTE It is imperative for proper operation of the water heater that the main burner rack be replaced in the original location AWARNING When lifting lever of the combination temperature
22. er rack clockwise x to OFF between two burner tubes P Turn knob on gas control counterclock wise TV to PILOT Push in control knob all the way and ho in Immediately light the pilot with a match Continue to hold the control knob in for about 1 minute after the pilot is lit Release knob and it will pop up Pilot should remain lit If pilot goes out repeat steps 4 thru 8 OWN IN knob does not pop up when OFF POSITION released stop and immediately call your service technician or gas supplier If the pilot will not stay lit after sever OTE Knob cannot be turned from al tries turn the gas control knob to PILOT to OFF unless knob is pushed in OFF and call your service technician slightly Do not force or gas supplier 5 Wait 5 minutes to clear out any 905 9 Turn gas control knob counterclockwise f you then smell gas STOP Follow B in sA to ON he safety information above on this label 10 Turn on all electric power to the appliance f you don t smell gas to next step 11 Set the thermostat to desired setting TO TURN OFF GAS TO APPLIANCE 1 Set the thermostat to lowest setting 3 Push in gas control knob slightly and turn 2 Turn off all electric power to the appli clockwise to OFF
23. heck voltage at 24 volt terminals of electronic control module of thermostat board Are main burners operating or is pilot trying to light sparking YESYV NO Troubleshooting Procedure for Electronic Thermostat continued If water temperature is too cold or heater does not come on proceed as follows 35 Test or Condition Are burners operating Result If pilot does not light and pilot is not sparking check to make sure flue damper is in the full open position Damper opens YES NO If damper opens but pilot does light or spark Does pilot spark without lighting pilot Make sure there is sufficient gas pressure at the gas valve inlet Check the nameplate for minimum gas supply pressures for the type of gas used Check for plugged pilot orifice Check gas valve by measuring voltage from PV to ground If no voltage check continuity across ECO circuit of thermostat red wires If ECO is open it should reset after tank cools below 160 F 71 C If it does not reset replace sensing bulb with the ECO If ECO has opened there may be a problem with the thermostat Pilot lights but main gas does not come on Action Taken Check flue damper wiring Check for 24 volts at yellow wire from thermostat to damper If damper still does not open check for 24 volts between red and white wires to damper If damper does not open when voltage is present and thermostat is closed replace damper operat
24. ine connections or the combination temperature and pressure relief valve will not result in damage to the area adjacent to the water heater or to lower floors of the structure When such locations cannot be avoided a suitable drain pan must be installed under the water heater The drain pan must be no greater than 1 inches 3 8 cm deep and have a minimum length and width of at least four 4 inches 10 2 cm measured from the jacket of the water heater The drain pan as described above can be purchased from your plumbing professional The drain pan must be piped to an adequate drain The piping must be at least 3 4 inch 1 9 cm in diameter and pitched for proper drainage It is recommended that a minimum clearance of four 4 inches 10 2 cm be provided on the side of the water heater for servicing and maintenance of the combination temperature and pressure relief valve Installation continued Minimum Clearances AWARNING Failure to adhere to these installation and operating instructions may create a hazard to life and property and will nullify the warranty This installation shall allow access to the front of the water heater and adequate clearance shall be provided for servicing and operating this water heater The water heater may be installed on either a combustible or non combustible floor If the water heater is to be installed directly on carpeting it shall be installed on top of a metal or wood panel or equivalent exten
25. ineering approved by the authority having jurisdiction provides an adequate supply of air for combustion ventilation and dilution of flue gases Water Connections Note BEFORE PROCEEDING WITH THE INSTALLATION CLOSE THE MAIN WATER SUPPLY VALVE After shutting off the main water supply open faucet to relieve the water line pressure to prevent any water from leaking out of the pipes while making the water connections to the water heater After the pressure has been relieved close the faucet The COLD water inlet and HOT water outlet are identified on the top and front of the water heater Make sure the diptube is in place before making the cold water connection Make the proper plumbing connections between the water heater and the plumbing system to the house Install shut off valve in the cold water supply line CAUTION If sweat fittings are to be used DO NOT apply heat to the nipples on top or side of the water heater Sweat the tubing to the adapter before fitting the adapter to the water connections It is imperative that heat is not applied to the nipples containing plastic liner AWARNING FAILURE TO INSTALL AND MAINTAIN A NEW LISTED TEMPERATURE AND PRESSURE RELIEF VALVE WILL RELEASE THE MANUFACTURER FROM ANY CLAIM WHICH MIGHT RESULT FROM EXCESSIVE TEMPERATURE AND PRESSURES If this water heater is installed in a closed water supply system such as the one having a back flow preventer in the cold water supply prov
26. isions shall be made to control thermal expansion DO NOT operate this water heater in a closed system without provisions for controlling thermal expansion Warranties do not cover damages from thermal expansions such as pressure bulges and or deformities Your water supplier or local plumbing inspector should be contacted on how to control this situation After installation of the water lines open the main water supply valve and fill the water heater While the water heater is filling open several hot water faucets to allow air to escape from the water system When a steady stream of water flows through the faucets close them and check all water connections for possible leaks NEVER OPERATE THE WATER HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER ACAUTION Keep clear of combination temperature and pressure relief valve discharge line outlet The discharge may be hot enough to cause scald injury The water is under pressure and may splash WARNING For protection against excessive temperatures and pressure install temperature and pressure protective equipment required by local codes but not less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials as meeting the requirements of the Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems ANS Z21 22 a
27. loor IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any telephone in your building Immediately call your gas supplier from a telephone in another building Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department DO NOT OPERATE APPLIANCE UNTIL LEAKAGE IS CORRECTED Installation Locating The Water Heater continued WARNING DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE NOT CERTAIN OF THE FOLLOWING Liquefied petroleum gases propane gas and natural gas have an odorant added by the gas supplier that aids in detection of the gas Most people recognize this odor as a sulfur or rotten egg smell Other conditions such as odorant fade can cause the odorant to diminish in intensity or fade and not be as readily detectable If you have a diminished sense of smell or are in any way unsure of the presence of gas immediately contact your gas supplier from a telephone in another building Gas detectors are available Contact your gas supplier or plumbing professional for more information Proper venting practices must be considered when selecting a location for this water heater For exact venting specifications please consult the Venting section located on page 10 of these Installation and Operating Instructions This water heater must be located in an area where leakage of the tank water l
28. nd the Standard CAN1 4 4 Temperature Pressure Temperature and Pressure Relief Valves and Vacuum Relief Valves The combination temperature and pressure relief valve shall be marked with maximum set pressure not to exceed the maximum working pressure of the water heater The combination temperature and pressure relief valve shall also have an hourly rated temperature steam BTU discharge capacity not less than the hourly rating of the water heater Install the combination temperature and pressure relief valve into the opening provided and marked for this purpose on the water heater Note Some models may already be equipped or supplied with combination temperature and pressure relief valve Verify that the combination temperature and pressure relief valve complies with local codes If the combination temperature and pressure relief valve does not comply with local codes replace it with one that does Follow the installation instructions above on this page Install a discharge line so that water discharged from the combination temperature and pressure relief valve will exit within six 6 inches 15 2 cm above or any distance below the structural floor and cannot contact any live electrical part The discharge line is to be installed to allow for complete drainage of both the combination temperature and pressure relief valve and the discharge line The discharge opening must not be subjected to blockage or freezing DO NOT thread plug or
29. ne if they are burning properly No adjustment to the air shutter is required for this heater The burner flames should be blue with yellow tips blue orange flame is characteristic of operation on liquefied petroleum LP gas The burner tube flames should light smoothly from the pilot IMPORTANT In the event of an emergency turn off the gas and electric if applicable to the appliance BURNER TUBE BURNER TUBE PILOT MAIN BURNER FLAME PATTERN Figure 6 29 MAINTENANCE AA WARNING Water heaters are heat producing appliances To avoid damage or injury there shall be no materials stored against the water heater or vent system and proper care shall be taken to avoid unnecessary contact especially by children with the water heater and vent system UNDER NO CIRCUMSTANCES SHALL FLAMMABLE MATERIALS SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER VENT SYSTEM OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER OR VENT SYSTEM IMPORTANT The water heater should be inspected at a minimum annually by a qualified service technician for damaged components and or joints not sealed DO NOT operate this water heater if any part is found damaged or if any joint is found not sealed The following maintenance should be performed by a qualified service technician at the minimum periodic intervals suggested below In some installations the maintenance interval may be more frequ
30. ons ACAUTION Do not turn on electrical power to water heater until flue damper is installed and water heater is filled with water 1 Remove the damper from the accompanying box shipped within the crate 2 Locate the collector outlet on top of the water heater Place the damper over the collector outlet and rotate as necessary to a position in which the damper wiring plug can be fully engaged with the connector on the side of the water heater 3 Remove clip which holds damper vane closed If supplied this type of vent damper will then open by itself 4 Being certain that the damper vane will travel freely from the closed to open position secure the flue damper to the jacket top with sheet metal screws Note Some dampers require an additional bracket to assure level installation Installation Venting continued 5 Connect the damper wiring plug to the connector on the side of the water heater Note The plug and connector can only be engaged one way polarized 6 The Lighting and Operating instructions are outlined beginning on page 25 The damper must be in the open position when the water heater main burner is operating the arrow on the damper plate is in the up position when open Be certain the arrow is in a visible position when installed ACAUTION Modification to the flue damper or the draft diverter may result in personal injury property damage or death The flue damper and draft dive
31. or Check black wire from damper for 24 volts to ground If no voltage is present but damper is open and voltage is present between yellow wire and ground end switch in damper may be faulty Replace damper operator If the pilot valve will not open when voltage is present to the to the PV terminal and the common terminal PV MV wire has continuity to the module the gas valve may be defective If no voltage is present at PV on the ignition control and the ECO is closed power to 24V and 24V GND terminals of module the ignition control module may be defective Replace and recheck system Make sure pilot flame is steady and envelopes the electrode or flame sensor Turn pilot adjustment screw counter clockwise to increase size of pilot flame Make sure pilot shield is in place If pilot flame is stable check for voltage at the MV terminal at the ignition module and gas valve If no voltage is present at the ignition module replace control If voltage is present at the gas valve replace valve Troubleshooting Procedure for Electronic Thermostat continued If water temperature is too cold or heater does not come on proceed as follows continued from table above Test or Condition Result Action Taken If power is not present at the Disconnect sensor leads from Sensor s may be shorted or terminal of the electronic control module and open Check continuity of 36 thermostat board and
32. oss of life This appliance has a pilot which must be If you cannot reach your gas sup ighted by hand When lighting the pilot plier call the fire department ow these instructions exactly C Use only your hand to push in or turn the B BEFORE OPERATING smell all around the gas control knob Never use tools If the appliance area for gas Be sure to smell knob will not push in or turn by hand next to the floor because some gas is don t try to repair it call a qualified ser heavier than air and will settle on the floor vice technician Force or attempted WHAT TO DO IF YOU SMELL GAS repair may result in a fire or explosion Do not try to light any appliance Do not use this appliance if any part has Do not touch any electric switch do been under water Immediately call a not use any phone in your building qualified service technician to inspect the immediately call your gas supplier appliance and to replace any part of the rom a neighbors phone Follow the control system and any gas control which gas supplier s instructions has been under water LIGHTING INSTRUCTIONS PILOT BURNER STOP read the safety information above 6 Find pilot follow on this label metal tube from gas THERMOPILE Set the thermostat to lowest setting control The pilot is urn off all electric power to the appliance located in the center P Push in gas control knob slightly and turn of the burn
33. ot water outlet nipple has been installed to extend tank life The anode rod should be inspected periodically every 2 years and replaced when necessary to prolong tank life Water conditions in your area will influence the time interval for inspection and replacement of the anode rod Contact the plumbing professional who installed the water heater or the manufacturer listed on the rating plate for anode replacement information The use of a water softener may increase the speed of anode consumption More frequent inspection of the anode is needed when using softened or phosphate treated water 31 Maintenance continued ACAUTION FOR YOUR SAFETY DO NOT ATTEMPT REPAIR OF COMBINATION GAS CONTROL BURNERS OR GAS PIPING REFER REPAIRS TO A QUALIFIED SERVICE TECHNICIAN Contact your supplier plumbing professional or contact the company at the address given on the rating plate of the water heater for replacement parts Provide the part name as well as the model and serial number s of the water heater s when ordering parts READ THE WARRANTY FOR A FULL EXPLANATION OF THE LENGTH OF TIME THAT PARTS AND THE WATER HEATER ARE WARRANTED Manufactured under one or more of the following U S Patents Re 34 534 4 416 222 4 628 184 4 669 448 4 672 919 4 808 356 4 829 983 4 861 968 4 904 428 5 000 893 5 023 031 5 052 346 5 081 696 5 092 519 5 115 767 5 199 385 5 277 171 B1 5 341 770 5 372 185 5 485 879 5 574 822 5 596 9
34. ow the correct sensor resistance at various temperatures 37 VE x Ls I 26109 25400 23399 22163 20445 19906 15715 60 15314 12185 11884 9526 90 100 E 9299 7507 7333 5961 100 5827 4767 4663 3839 3758 3112 3048 2538 2488 2083 2043 1720 1688 1427 1402 1191 1170 0 982 842 828 713 In Degrees C 1 2 a 4 s e 7 _ __ 32648 26682 20879 13071 8409 5546 3742 50 2579 7 50 60 2488 2400 2316 2235 2157 2083 2011 1942 1876 1813 70 o 1297 80 1256 1216 1177 1140 1105 1070 1037 1005 974 944 go sss se 835 786 763 741 698 38 PART NAME AND DESCRIPTION 1 Drafthood 22 Wire Harness Damper Upper Sensor 5 23 Flue Damper Spark Ignition Models 24 Anode Rod Not Pictured 25 Tank Leg Thermal Break 26 Manual Shut Off Valve Applicable Model 27 Wire Harness Lower Sensor S l Models 27a Wire Harness Standing Pilot Models 28 T amp P Valve 29 Nylon Cable Clamp 30 Self Tapping Screw 31 Gasket Potentiometer 5 1 Models 32 Temp Control Potentiometer S l Models 33 Bezel Temp Control S I Models 34 Screw Bezel Position S I Models 35 Locknut Potentiometer S I Models 36 Temp Control Knob S Models 37 Upper Temp Sensor S I Models 38 Lower Temp Sensor S Models 38a Thermostat Standing Pilot Models
35. perature setting is approximately 130 F 55 C Households with small children or invalids may require 120 F 49 C or lower temperature setting to reduce the risk of scald injury Some states require lower temperature setting Full counterclockwise rotation of the temperature selector knob is the minimum temperature setting Full clockwise rotation of the temperature selector knob is the maximum temperature setting NOTE The lower the temperature setting the greater the energy efficiency both to heat the water and to maintain its temperature during standby periods Lower water temperatures also extend tank life Remember no water heating system will provide exact temperatures at all times Allow a few days of operation at this setting to determine the correct temperature setting consistent with your needs NOTE This water heater when set at a lower temperature setting is not capable of producing hot water of sufficient temperature for sanitizing purposes During winter season or any cold period you may desire a higher temperature setting to adjust for the colder incoming water This adjustment however may cause additional condensation to form on the cooler tank surface This does not mean the tank is leaking During summer months the warmer incoming water temperatures will benefit the performance of your water heater and reduce the amount of condensation developed Condensation does not mean your tank is leaking Over 40
36. re testing of the gas supply system at test pressures equal to or less than 1 2 psi 3 5 kPa The supply line must be capped when not connected to the water heater GENERAL OPERATION 21 VWARNING Water heaters are heat producing appliances To avoid damage or injury there shall be no materials stored against the water heater or vent air intake system and proper care shall be taken to avoid unnecessary contact especially by children with the water heater and vent air intake system UNDER NO CIRCUMSTANCES SHALL FLAMMABLE MATERIALS SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER TO FILL THE WATER HEATER 1 Close the water heater drain valve by turning the knob clockwise If alternative water connections are provided but not used make certain they are plugged i e rear connections Open the cold water supply shut off valve Open several hot water faucets to allow air to escape from the system When a steady stream of water flows from the faucets the water heater is filled Close the faucets and check for water leaks at the water heater drain valve combination temperature and pressure relief valve and the hot and cold water connections PON TO DRAIN THE WATER HEATER Should it become necessary to completely drain the water heater make sure you follow the steps below 1 Rotate the thermostat dial clockwise to
37. rter are to be placed in position and operate exactly as stated in these instructions without modification Combustion Air Supply WARNING Liquefied petroleum gases propane gas are 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 gas Before lighting smell all around the appliance area for gas Be sure to smell next to the floor IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any telephone in your building Immediately call your gas supplier from a telephone in another building Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department DO NOT OPERATE APPLIANCE UNTIL LEAKAGE IS CORRECTED IMPORTANT The flow of combustion and ventilating air must not be obstructed Provide adequate air for combustion and ventilation An insufficient supply of air will cause recirculation of combustion products resulting in air contamination that may be hazardous to life Such a condition often will result in a yellow luminous burner flames causing carboning or sooting of the burners and flue tubes with possible damage to the heater Confined Spaces If the water heater is installed in a confined space volume is less than 50 2 1000 BTU 15 m 0 29 kW per hour of the total input rating of all gas appliances in tha
38. stions This water heater must be installed in accordance with local codes In the absence of local codes it must be installed in compliance with the National Fuel Gas Code ANSI Z223 1 Latest Edition or in Canada CAN CGA B149 1 Natural Gas Installation Code Latest Edition or CAN CGA B149 2 Propane Installation Code Latest Edition For installations in high altitude regions this water heater must be ordered from the supplier to the manufacturer s specifications for that particular altitude Contact the company listed on the rating plate when ordering high altitude constructed water heaters This water heater has been designed and certified for the purpose of heating potable water The installation and use of this water heater for any purpose other than the heating of potable water may cause damage to the water heater create a hazardous condition and nullify the warranty General Information continued ACAUTION Incorrect operation of this appliance may create a hazard to life and property and will nullify the warranty A DANGER Do not store or use gasoline or other flammable combustible or corrosive vapors and liquids in the vicinity of this or any other appliance IMPORTANT Before proceeding please inspect the water heater and components for possible damage DO NOT install and damaged components If damage is evident then please contact the supplier where the water heater was purchased or the manufacturer listed on
39. t space air must be supplied through two permanent openings One opening shall be within 12 inches 30 5 cm from the top of the enclosure and one within 12 inches 30 5 cm of the bottom The openings must be protected by metal louvers or 1 4 6 4 mm min mesh metal screen The size of the openings are as follows 1 If the openings communicate directly with an additional room s of sufficient volume each opening shall have a minimum free area opening of 1 2 1000 BTU 2 54cm 0 29kW per hour of the total input rating of all gas appliances in the confined space but not less than 100 1 2 254 cm Installation Combustion Air Supply continued 2 If the openings communicate with the outdoors through horizontal ducts each opening shall have a minimum free area of 1 in 2000 BTU 2 54cm 0 59kW per hour of the total rating of all gas appliances in the enclosure 3 If the openings communicate directly with the outdoors or through vertical ducts with the outdoors each opening shall have a minimum free area of 1 in 4000 BTU 2 54cm 1 18kW per hour of the total rating of all gas appliances in the enclosure ACAUTION The draft diverter relief opening of the water heater and combustion air inlet must be in the same atmospheric pressure zone Large exhaust fans in kitchens and other locations can lower the air pressure inside an enclosure and interfere with the proper operation and venting of the water heater In these
40. the PILOT LIGHTING position 2 Rotate and partially depress gas control knob clockwise to the OFF position 3 Shut off the gas supply to the water heater 4 Close the cold water supply shut off valve 5 Open the drain valve on the water heater by turning the knob counter clockwise The drain valve has threads on the end that will allow the connection of a standard hose coupling 6 Open a hot water faucet to allow air to enter the system To refill the water heater refer to To Fill the Water Heater General Operation Standard Pilot Wiring Diagram continued 22 Pe THERMOSTAT W RODGERS m JUMPER LEAD w GAS VALVE ROBERTSHAW R 7000BMVR PIEZO IGNITOR 7000MVRHC THERMOPILE NOTE IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED WITH 18 GA 105 C PLASTIC AWM WIRE OR EQUIVALENT General Operation Spark Ignition Wiring Diagram continued 23 24V CLOCK CONTROL IGN R SHAW SP 845 WHITE 115 VOLTS IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED WITH 18 GA STRANDED 105 WIRE OR ITS EQUIVALENT Lighting And Shutdown Instructions 24 Standard Pilot Models FOR YOUR SAFETY READ BEFORE LIGHTING WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or l
41. the heater operates if this wire 15 jumpered to the terminal above it then make the following checks to the thermostat circuit This procedure also applies if the burners cycle on for short periods but the water temperature seems low Sensors O K Check remote potentiometer mE measure resistance of sensor s with ohmmeter Is resistance between 700 and 30K ohms see page 38 Measure water temperature from tank for an approximate correlation with the table YES NO Disconnect potentiometer leads from electronic control module Measure resistance of potentiometer with ohmmeter Is resistance greater than 4800 ohms at the minimum temperature setting and less than 50 ohms at the maximum temperature setting checks for open or shorts YES Temperature Control Checkout wires for loose broken or shorted wires Replace sensing bulb or wire harness If necessary Replace potentiometer Reconnect all leads and check out system Replace electronic control module Reconnect all leads and check out system Set the L8104 above water temperature See page 27 and observe system through one 1 complete cycle Make sure system operates as desired To check the thermistor or thermistor ECO assembly compare it s resistance as measured by an ohmmeter to the water temperature as measured by an accurate thermometer Thermistor resistance increases as the temperature decreases The tables below sh
42. the ignition control module to initiate the ignition sequence 2 On flue damper models the damper reaches then full open position the end switches in the damper close completing the 24 volt circuit to the ignition module 3 The ignition control sends 24 volt power to the pilot PV terminals on the gas valve allowing pilot gas to flow to the pilot The ignition control also simultaneously sends high voltage low current electricity through the electrode wire to the pilot electrode causing sparks at the pilot electrode to ignite the pilot gas If the pilot fails to ignite within 90 seconds the ignition control stops the pilot gas and sparking for 15 seconds to allow gas to dissipate The ignition control will then attempt 2 two more ignition trials as stated above If the pilot does not ignite after 3 trials the ignition control will then go into lockout mode and the ignition system will remain shut down until the control is reset by interrupting power to the ignition module 4 When the pilot gas ignites the flame is sensed by the electrode or a flame sensing rod The flame sensing signal received by the ignition control causes the sparking to stop and the main gas valve to open The main burners ignite from the pilot flame The pilot flame is continually monitored by the flame sensing circuit If for any reason the pilot flame is not sensed by the electrode or flame sensing rod the main gas valve closes the spark electrod
43. valve as possible ground joint union must be installed in the gas supply line as close to the water heater as possible feeding the water heater to permit servicing of the water heater Compounds used on the threaded joints of the gas piping must be resistant to the action of liquefied petroleum gases propane gas DO NOT apply pipe dope to the gas valve inlet and make certain that no pipe dope has become lodged in the inlet screen of the gas valve Extreme care shall be taken to ensure no pipe dope enters the gas valve and to avoid excessive torque when tightening the gas supply line to the gas valve Excessive torque may result in cracking of the gas valve housing The suggested maximum torque is 31 5 ft Ibs 4 4 kg m The manufacturer of this water heater will not be liable for any damage or injury caused as a result of a cracked gas inlet as a result of excessive torque This water heater and its gas connection must be leak tested before placing the water heater in operation Check for gas leaks with a soap and water solution and a brush or a commercial leak detector fluid NEVER USE A MATCH OR OPEN FLAME FOR TESTING ACAUTION The water heater and individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of the system at test pressures in excess of 1 2 psi 3 5 kPa The water heater must be isolated from the gas supply piping system by closing its manual shutoff valve during any pressu
44. weather does not drip on the controls Adequate clearances shall be provided for easy access to controls by service personnel to enable proper cleaning servicing and operation of the water heater Under no circumstances is the front of the water heater to be placed in a position where the burner tray assembly can not slide out for removal when servicing Installation Locating The Water Heater continued Water heater corrosion and component failure can be caused by the heating and breakdown of airborne chemical vapors Examples of some typical compounds that are potentially corrosive are spray can propellants cleaning solvents refrigerator and air conditioning refrigerants swimming pool chemicals calcium and sodium chloride waxes and process chemicals These materials are corrosive at very low concentration levels with little or no odor to reveal their presence NOTE DAMAGE TO THE WATER HEATER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY THE WARRANTY DO NOT OPERATE THE WATER HEATER IF EXPOSURE HAS OR WILL OCCUR DO NOT STORE ANY POTENTIALLY CORROSIVE COMPOUNDS IN THE VICINITY OF THE WATER HEATER WARNING Liquefied petroleum gases propane gas are 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 gas Before lighting smell all around the appliance area for gas Be sure to smell next to the f
45. you should install an anti scald tempering valve in the water system This valve will reduce point of discharge temperature by mixing cold and hot water in branch supply lines Such valves are available from the local plumbing supplier Please consult with a plumbing professional For information regarding space heating water connections and plumbing arrangements refer to page 40 Gas Connections 20 The gas supply lines must meet all requirements of the National Fuel Gas Code ANSI Z223 1 Latest Edition or in Canada CAN CGA B149 1 Natural Gas Installation Code Latest Edition or CAN CGA B149 2 Propane Installation Code Latest Edition The minimum permissible gas supply pressure for the purpose of input adjustment is one 1 0 inch 0 25 kPa water column above the operating manifold pressure See the rating plate and gas valve for the manifold pressure and gas type The maximum permissible gas supply pressure 15 fourteen 14 0 inches 3 5 kPa water column for natural gas and liquefied petroleum gases propane gas 1 Connect this water heater only to the type of gas Natural or Propane gas as shown on the rating plate Use clean black iron pipe or equivalent material approved by local codes and ordinances Dirt and scale from the pipe can enter the gas valve and cause it to malfunction The inlet gas line must have minimum length of three 4 inches 7 6 drip leg sediment trap installed as close to the water heater s gas
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