GSW Electric Water Heater P/N 61515 REV. G (05-03) User's Manual
Contents
1. 60 C has been proven to be most satisfactory from the standpoint of operational costs and safety We recommend you keep the thermostats adjusted to 140 F 60 C If adjustments are made set both thermostats to the SAME setting if applicable Temperature Limit Control For safety a non adjustable high limit temperature switch will shut off the power when excessive water temperatures are reached This switch must be re set manually See Trouble Shooting section WARNING BEFORE ATTEMPTING ANY ELECTRICAL REPAIRS OR REPLACEMENTS TURN OFF POWER TO THE WATER HEATER CHECK WITH A VOLTAGE TESTER AT TER MINAL 1 AND 3 OF THE LIMIT CONTROL THAT POWER IS INDEED OFF FAILURE TO DO SO MAY RESULT IN ELECTRIC SHOCK AND OR ELECTROCUTION OF THE PERSON DOING THE WORK If water temperature adjustment is required 1 Turn the electrical supply to the water heater OFF 2 Remove the access door s and turn back insulation 3 Adjust the thermostat s to the water temperature desired if a two thermostat system exists set both thermostats at the same tempera ture 4 Repack the insulation and replace access door s 5 Turn the electrical supply to the water heater ON V MAINTENANCE Temperature amp Pressure Relief Valve Inspect the relief valve annually to ensure proper operation This involves opening the valve to check that water is able to flow freely and that there are no blockages Warning THE WATER WILL BE HOT and it2. 150 PSI Install the valve into an opening provided and marked for this purpose in the water heater and orient it or provide tubing so that any discharge from the valve will exit only within 6 inches above or at any distance below the structural floor and cannot contact any live elec trical part The discharge opening must not be blocked or reduced in size under any circumstances The end of the relief pipe opening should ter minate near a floor drain or other suitable location not subject to block ing or freezing DO NOT thread plug or cap the relief pipe opening FAILURE TO INSTALL A LISTED 3 4 TEMPERATURE PRESSURE RELIEF VALVE WILL RELEASE THE MANUFACTURER FROM ANY CLAIM WHICH MIGHT RESULT FROM EXCESSIVE TEMPERATURES AND PRES SURES IID INSTALLATION Plumbing 1 The cold water inlet is identified at the top of the heater unless bot tom entry The hot water connection is also identified at the top of the heater Install a shut off valve in the cold line approximately 3 from the inlet to the heater where it is in convenient reach This valve is for emergency shut off and MUST be kept open during the opera tion of the heater 2 The water connection fittings contain a plastic lining to minimize cor rosion and some models include plastic heat traps Do not apply heat to these nipples when making solder connections Sweat a piece of tubing to adapter before fitting adapter to nipple 3 After installing the water pip
3. adjacent areas lower floors of the structure or other property subject to water damage This is particu larly important if the water heater is installed in a multi story building on finished flooring or carpeted surfaces GSW CANNOT BE HELD LIABLE for damage caused by water from the water heater pressure relief valve or related fittings where adequate provision to drain such water has not been made Closets without drains and carpeted areas are examples of unsuitable locations for any water heater Select a location as centralized within the piping system as possible The heater should be located in an area not subject to freezing temperatures In any location selected it is recommended that a suitable drain pan be installed under the water heater This pan shall be an minimum of 50mm 2 in deep and have a diameter that is a minimum of 50mm 2 in greater than the diam eter of the water heater Suitable piping shall connect the drain pan to a properly operating floor drain If this heater is to be installed directly on carpeting the carpeting must be protected by a metal or wood panel beneath the heater extending beyond the full width and depth of the heater by a minimum 80mm 3 in If the heater is installed in a closet or alcove the entire floor must be covered by the panel This panel must be strong enough to support the weight of the heater full of water without breaking Failure to heed this warning may result in a fire hazard When u
4. 5 Open the drain valve on the heater drain keeping the drain valve open during the shutdown period 6 To refill the heater see Filling Tank section Installation Check List 1 Are the fuse and wire sizes correct 2 Is the certified relief valve installed 3 Are you sure that in case of water leakage the building furniture carpeting or other property will not be dam aged 4 Has the relief valve been piped to a suitable drain point 5 Is the relief valve discharge unobstructed 6 Is the heater completely filled with water 7 Is the cold supply valve open If the answer to the above are yes turn on the power and enjoy all the hot water you need all the time Check Here CAUTION FOR YOUR SAFETY BE AWARE THIS WATER HEATER IS CAPABLE OF PRODUCING HOT WATER AT A TEMPERATURE SUFFICIENT ENOUGH TO CAUSE SCALDING INJURY READ INSTRUCTIONS CAREFULLY BEFORE OPERATING THIS UNIT INCREASING THE THERMOSTAT SETTING ABOVE THE PRE SET TEMPERATURE MAY CAUSE SEVERE BURNS AND CONSUME EXCESSIVE ENERGY HOTTER WATER INCREASES THE RISK OF SCALD INJURY 150 F 66 C 2 SECONDS 140 F 60 C 6 SECONDS 130 F 54 C 30 SECONDS IV OPERATION Temperature Adjustment In order to reduce the risk of scald injury thermostats are factory set at 140 F 60 C The thermostats operate automatically They can be adjust ed to provide warmer or cooler water temperature The setting of 140 F
5. GSW WATER HEATING G SW 599 Hill Street West Fergus ON Canada N1M 2X1 ELECTRIC WATER HEATER INSTALLATION AND OPERATING INSTRUCTIONS For Brands GSW John Wood SpaceSaver GSW Moffat TABLE OF CONTENTS Lh MROGHCUON oc ax ser Meath stinr rated a ete en 2 I Safety note Died 6 etendee eeeeend cs rede age ae 2 II Installation oi oie tte date Sale 4 2 IV Operation on Suche le toad ke ore de ae Ys 3 V Maintenance 22sec todo let pee ss 4 Warranty iS eran Sic Move rend Dost alte Dieta kd 6 PLEASE RETAIN THESE INSTRUCTIONS IN A SAFE LOCATION FOR FUTURE REFERENCE Read and understand these instructions thoroughly before starting A WARNING Improper installation adjustment alter ation service or maintenance can cause injury or property damage Refer to this manual For assistance or additional infor mation consult a qualified installer serv ice agency or the electric utility A FOR YOUR SAFETY e Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance e Installation and service must be per formed by a qualified installer service agency or the electric utility A WARNING If the information in these instructions is not followed exactly a fire or explosion may result causing property damage per sonal injury or death IF YOU HAVE ANY INSTALLATION PERFORMANCE OR OPERATIONAL QUESTIONS PLEASE CALL THE FOL LOWING NUMBER PRIOR TO REMOVING THE
6. LIEU OF AND EXCLUDES AND REPLACES ALL OTHER CONDITIONS WARRANTIES GUARANTEES REPRESENTATIONS OBLIGATIONS OR LIABILITIES OF GSW OF ANY NATURE OR KIND EXPRESS OR IMPLIED HOWEVER ARISING WHETHER BY CONTRACT CONDUCT STATEMENT STATUTE NEGLI GENCE PRINCIPLES OF MANUFACTURER S LIABILITY OPERATION OF LAW OR OTHERWISE WITH RESPECT TO THE UNIT OR ITS FITNESS FOR A PARTICULAR PURPOSE MERCHANTABILITY INSTALLATION OPERATION REPAIR OR REPLACEMENT GSW EXPRESSLY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES IN NO EVENT WILL GSW S LIA BILITIES EXCEED THE COST OF THE DEFECTIVE PART S OR UNIT GSW WILL NOT PAY FOR ANY TRANSPORTATION LABOUR INSTALLATION OR OTHER INCIDENTAL COSTS ASSOCIATED WITH THE REPAIR OR REPLACEMENT OF A DEFECTIVE PART OR UNIT This warranty and GSW s obligations shall be construed and determined in accordance with the laws of both the Province of Ontario and of Canada in force therein This Warranty does not affect specific legal rights of a consumer under applicable law except to the extent that such rights may be waived or replaced and the provisions hereof are deemed to be amended to the extent necessary The unenforceability of any provision in whole or in part of this Certificate shall not affect the remaining provisions Any and all repair and or replacement of part s or Unit are the sole and exclusive remedy available against GSW LIABILITY OF GSW COVERED BY THIS WARRANTY IS CONDITIONAL UPON THE FOLLOWING 1 The Unit sh
7. Serial Number prefix for Warranty Code P R ST U V W Y Warranty Code Reduced warranty period Standard Warranty Year 3 5 6 7 8 9 10 12 applies to Newfoundland Reduced Warranty Years 2 3 3 5 5 5 5 7 For its GSW and John Wood water heaters and storage boosters Unit GSW Water Heating GSW warrants that upon receipt of a properly verified Warranty claim within the Warranty Period it will at its election repair or replace units which leak or parts which are defective in material or workmanship subject to the terms and conditions set forth in this certificate GSW will not assume any expense or liability for unauthorized returns nor repairs made by a person who has not been authorized by GSW or one of its authorized dealers GSW Units parts must be replaced with GSW or John Wood products to be eligible for Warranty This Warranty is available to the original owner of a Unit installed within the boundaries of continental United States of Canada or their territories Consumers must retain point of sale proof of purchase to validate warranty entitlement This Warranty does not cover components not manufactured by GSW such as oil burners which carry the warranty given by the manufacturer thereof copy of which warranty GSW will make available to the extent supplied by the manufacturer without recourse to GSW THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF THIS EXPRESS WARRANTY IS WHERE PERMITTED BY LAW IN
8. WATER HEATER if this is a rental water heater please contact the rental company 1 888 GSW TECH 1 888 479 8324 GSW Water Heating is a division of GSW Water Products Inc INSTALLATION RECORD This water heater is protected by a multi year warranty against leaks plus a one 1 year warranty on parts Record key data here for future reference and prompt service Installed By Purchased From Installation Date Location of Electrical Switch or Circuit Protector Model Number Serial Number Volts S PART NO 61515 REV G 05 03 I INTRODUCTION Thank you for purchasing this water heater Properly installed and maintained it will provide years of trouble free service The warranty on this water heater is in effect only when the water heater is installed and operated in accordance with these instructions The man ufacturer of this water heater will not be liable for any injury or property damage resulting from failure to comply with these instructions WARNING This water heater must be installed strictly in accordance with the instructions enclosed and local electrical fuel and building codes It is possible that connections to the water heater or the water heater itself may develop leaks IT IS THEREFORE IMPERATIVE that the water heater be installed so that any leakage of the tank or related water piping is directed to an adequate drain in such a way that it cannot damage the building furniture carpeting
9. access door s 7 Turn the electrical supply to the water heater ON Cathodic Protection Anode Maintenance Your water heater has been supplied with an anode rod that protects the tank from corrosion As the rod works it slowly dissolves over time and must be replaced If the anode is less than 3 8 diameter or any exposed bare core replace Depending on water conditions an anode can last from one to ten years Many localities treat their water which can have significant effect on the life of your heater Water conditioning such as over softening can accelerate the rate at which the anode rod is con sumed Rapid depletion can leave a heater unprotected causing a prema ture failure As with any water heater it is good practice to check the anode annually to see if it needs replacing Anode Inspection Change 1 Turn the electrical supply to the water heater OFF 2 Close the cold inlet supply valve 3 Open a hot water tap supplied by the heater CAUTION Water will be hot 4 See Draining Tank section to remove enough water to empty the pip ing system 5 Using a 1 1 16 required 6 To refill the heater see Filling Tank section Operating a water heater without an actively working anode rod will void the warranty socket remove anode and inspect or replace as Tank Clean Out 1 Aclean out opening is provided on certain models for periodic clean ing of the tank Power supply must be shut off and the heater d
10. all be installed in accordance with all manufacturers instruc 7 A properly documented claim shall be received by GSW or one of its tions all applicable equipment and building codes ordinances and regu authorized dealers or point of purchase within the following Warranty lations hereinafter referred to as the standards Period except as provided otherwise below 2 The Unit must not be installed where water damage can result from a a for any defective part within one 1 year or leak while provision s shall be made for directing any water escaping b for any Unit that develops leaks in the inner tank due to rust corrosion from the Unit to a properly operating drainpipe As all units of this type or other chemical reactions caused by the potable domestic water sup may eventually leak you must protect against any potential water dam plied to your home within the period of time shown in table at the top of age GSW accepts no responsibility for such damage nor any incidental this page or consequential loss nor damage s related thereto suffered by the Residential units installed and used in a commercial application carry a owner of the Unit nor by any third party warranty period of one 1 year from date of installation and 3 The Unit shall not be installed where it will be exposed to adverse or Any repair or replacement of any part tank or Unit under this Warranty unusual environmental or corrosive conditions No warranty ext
11. blematic in regions where the water contains some sulphur which results in hot water having a rotten egg smell If this occurs drain the system completely flush thoroughly and refill If the problem persists the anode rod may need to be changed from magnesium to one made of aluminum In certain cases chlorinating and flushing of the water heater may be required Contact your dealer or water supplier Discoloured Water e Water rich in iron or other minerals can produce red or brown staining Heating water generally worsens this situation Black water can be an indication of organic contaminates in the water supply This can be problematic in areas where the water is obtained from surface or contaminated sources Organic particles can develop bacterial growth causing potential health hazards Contact your water supplier for proper filtration or water conditioning equipment For bac terial problems contact your local health authority Also see Hot Water Odour section A sudden appearance of rusty water can indicate the anode rod has been depleted The remaining steel core wire may be corroding releasing iron particles into the water Inspect and replace as necessary Also see Cathodic Protection Anode Maintenance section Water Heater Makes Noise Sediment sand or scale can accumulate resulting in rumbling or a hissing noise Water heaters need to be flushed regularly to minimize buildup Severe accumulations can cause
12. ck in the service panel or a separate disconnect switch so that electric power can be shut off easily when working on the heater 5 Final connections are made at the junction box in the heater Access to the junction box is obtained by removing the cover near the knock outs 6 The heater you have received is internally wired A specific wiring diagram is located inside the upper door or for certain models on the rating plate All wiring is colour coded and connections must be made as shown in the wiring diagram MAKE SURE HEATER IS COMPLETELY FILLED WITH WATER BEFORE POWER IS TURNED ON SEE FILLING TANK SECTION Wirin TWO WIRE CIRCUIT FOR NON SIMULTANEOUS OPERATION SINGLE HIGH LIMIT The basic operation of a two thermostat system upper and lower on an electric water heater of 240 volts is as follows Only one element will come on at any one time This is known as a flip flop system On a 240 volt water heater there will always be 120 volts to both elements The thermostat will direct the second leg of the 120 volt to the element to complete the 240 volts required for energizing the element Initial Start Up When the tank is full of cold water the upper thermo stat will take priority and the top portion of the water will heat up to the setting of the thermostat Once that temperature has been reached the thermostat will then flip down the 120 volts to the lower thermostat The thermostat switch closes and the bottom portion o
13. en exceeded by large demands of hot water Wait at least one hour then check for hot water at normal hot water faucet 5 The incoming cold water may be colder because it is winter If so it will take longer to heat the water 6 If none of the above result in adequate hot water call a service person 7 If there is no HOT water check the upper element 8 If there is limited HOT water check the lower element 9 If water is LUKEWARM check for proper incoming voltage ares Leakage Is Suspected Check all pipes and fittings for leaks including the drain valve ele ment s and relief valve 2 See if the apparent leakage might be condensation In warm or humid locations condensation can accumulate and run from the heater and piping 3 If leakage is from the relief valve discharge pipe it may represent a normal condition Call a service person to check the valve carefully 4 If you cannot identify or correct the source of leakage a Turn off electrical supply to he heater b Close the cold water inlet valve to the heater c Open a hot water faucet d Contact a qualified plumber or service person Water Is Too Hot Adjust the thermostats to a lower setting See Temperature Adjustment section It is imperative that the thermostat is flush against the tank See Thermostat Replacement section Hot Water Odour On occasion and depending on your location hot water may develop a strong odour This can be especially pro
14. ends for will not extend the Warranty Period beyond that calculated from the date example and without limitation of the foregoing to Units exposed to of first installation of the original Unit The date of first installation will salts chemicals exhausts pollutants or contaminants Further no war be deemed to be the later of the date indicated by the Unit s serial num ranty extends to Units affected by fire freezing or flood Acts of God ber or if supplied with the Warranty claim the sales receipt or installer s or any other contingency beyond the control of GSW receipt 4 The Unit shall be equipped with a properly operating temperature and 8 A claim under this Warranty must include the model and serial number of pressure relief valve as specified by GSW and applicable standards The the Unit proof of date on which the Unit was first installed and the iden Unit shall be operated at temperatures not exceeding the maximum set tity of the defective part s for which a claim is being made and be sub ting of the thermostat and or high limit control provided by GSW and at mitted within 15 days following discovery of the defect s by personal water pressures not exceeding the pressure reading stated on the Unit delivery to a GSW authorized dealer point of purchase or GSW itself at 5 The Unit must be carefully inspected maintained and operated in accor GSW Water Heating dance with the manufacturer s instructions No warranty extends fo
15. f the tank heats up until the water reaches the setting on that thermostat At this point the tank will be full of hot water TWO WIRE CIRCUIT FOR SINGLE 1 ELEMENT HEATERS EQUIPPED WITH SINGLE HIGH LIMIT CONTROL SPACESAVER MODELS ONY 7 aaa Fal JUNCTION a BOX 1 A RED WIRE 208 240 V SUPPLY v WHITE WIRE 120 277 V SUPPLY HIGH LIMIT CONTROL lt N RED BUTTON RESETS BOTH CIRCUITS 0 O 404 enone ete BOTH N C s OPEN ON TEMPERATURE RISE 180 F N C N C N C N C OPENS ON TEMPERATURE RISE ELEMENT WATER HEATER MUST BE GROUNDED TO THE ELECTRIC SUPPLY SERVICE TWO WIRE CIRCUIT FOR TWO 2 ELEMENT HEATERS EQUIPPED WITH SINGLE 1 HIGH LIMIT CONTROL NON SIMULTANEOUS OPERATION INCOMING Or JUNCTION ae BOX L 1 RED WIRE 208 240 V SUPPLY ay WHITE WIRE 120 277 V SUPPLY BLACK HIGH LIMIT RED BUTTON RESET CONTROL UUO Pele BOTH CIRCUITS BOTH N C s OPEN ON TEMPERATURE RISE 180 F N C NIC UPPER E ATS f N C N C OPENS AND N O CLOSES ON TEMPERATURE RISE ELEMENT LOWER S 1 2 N C N C OPENS ON TEMPERATURE RISE LOWER E ELEMENT WATER HEATER MUST BE GROUNDED TO THE ELECTRIC SUPPLY SERVICE Normal Operation When hot water is being used cold water enters the bottom of the heater e
16. ing cover with the pipe insulation if sup plied with this heater Use the insulation to cover 2 of hot and cold piping nearest to the heater 4 A combination Temperature and Pressure relief valve MUST be installed In some cases it is necessary that a Tee be fitted in the top of the heater which allows the temperature probe to reach into the top of the tank See diagram on page 4 No shut off valve of any kind is permitted between the tank and the relief valve The outlet of the relief valve must be piped to a drain or fixture and must terminate within 6 of the floor Electrical 1 Check to see that the element marking and nameplate data do corre spond with the electric service available a The junction box where electrical connections are made is located near the top of the heater near the upper access door 2 Install a circuit directly from the main fuse box This circuit must be the right size for the length of run and the load see chart below RECOMMENDED FOR AMPERAGE MAX VOLTS WATTS 208 V 4500 3a 5A The heater must be well grounded 3 A ground wire must run from the green ground screw provided at the electrical connection point in the heater junction box to the ground connection at the service panel 4 Adequate fusing must be provided at the service entrance as required by local codes and or electric utility having jurisdiction This can be accomplished with either a circuit breaker or fuse blo
17. ither bottom feed or by diptube and the bottom element will begin to heat the cold water If lots of hot water has been used the upper thermostat will take priority and the top portion of the heater will be heated Once heated the thermostat will flip down to the lower thermostat to heat the lower portion NOTICE Do not supply power to this water heater until you have verified that the unit is completely filled with water To ensure that the water heater is full of water and that all the air has been purged from the system run all the hot water faucets in the house continuously for three 3 minutes Filling Tank 1 Close the drain valve and then open a hot water faucet 2 Open the cold water supply valve 3 When water runs out of the hot faucet the tank is full 4 Check the system for leaks NOTE When filling avoid water spillage Do not allow the insula tion of the heater to get wet as water can cause electrical malfunction Draining Tank completely If the power is to be turned off during the cold season and the tank is exposed to freezing temperatures the water heater must be drained Water will expand when it freezes and can damage the heater Completely drain as follows 1 Make sure the electrical supply to the water heater is OFF 2 Turn off cold water supply 3 Connect a garden hose to the end of the drain valve and direct this to a point lower than the heater 4 Open a hot water faucet
18. premature failure of the water heater elements Extended Non Use Service Caution Hydrogen gas can be produced in a hot water system served by this heater that has not been used for a long period of time generally two 2 weeks or more Hydrogen gas is extremely flammable and can ignite when exposed to a spark or flame To reduce the risk of injury under these conditions it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system Use caution in opening faucets When hydrogen is present there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow There should be no smoking or open flame near the faucet at the time it is open Pressure Build Up Thermal Expansion During the heating cycle of the water heater the water expands creating a pressure build up in the plumbing system If the pressure exceeds 150 PSI water will come out of the valve This is a normal safety function of the T amp P valve The water supply meter may have a check valve or back flow preventer inside This can increase the possibility of pressure build up Causes of discharge can be thermal expansion excess system pres SPACESAVER MODELS SIDE OUTLET ONLY NOTE TO INSTALLERS A bent tube as shown is installed for the hot water outlet on side outlet water heaters to ensure a maxi mum of hot
19. r GSW Water Heating is a division of GSW Water Products Inc example and without limitation of the foregoing to any Unit operated 599 Hill Street West without the tank being completely filled with water without an operating Fergus ON Canada NIM 2X1 anode with levels of sediment or lime precipitate which cause failure in Should you have questions please call our Technical Support Line at 1 connection to any attachment s energy saving device s or other means 888 479 8324 of heating except as approved by GSW for the Unit other than with 9 Ifrequested by GSW information relating to the purchase transportation potable water without any additives such as salts chlorine or chemicals operation and installation of the Unit must be supplied The defective except those added for the sole purpose of rendering the water fit for part s or Unit with all components properly and securely packed shall domestic use be returned transportation pre paid to the address designated by GSW in 6 All repairs must be made by a competent and qualified person who is cer the written request All claims are subject to validation by GSW tified by GSW or one of its authorized dealers to work on the Unit using factory approved replacement parts and the Unit shall not be otherwise modified altered or improperly repaired
20. rained before opening the clean out 2 To clean heater through the clean out opening proceed as follows a Remove outer door from side of the casing b Peel back the insulation covering the clean out flange c Remove the six 6 hex head screws securing the tank clean out plate and remove the plate d Remove lime scale or sediment using care not to damage the glass lining of the tank e Inspect the clean out gasket if it shows signs of wear a new gasket is required f Install the clean out plate Be sure to draw plate up tight by tight ening screws securely g Position the insulation and replace the door Trouble Shooting Follow the preceding instructions carefully and your heater should pro vide long and trouble free service If problems do arise however the fol lowing will be of assistance Not Enough Or No Hot Water 1 Make sure the electrical supply to the water heater is ON 2 Check for loose or blown fuses and loose connections in the water heater circuit 3 If the water was too hot and is now cold the high limit temperature switch may have operated To reset this proceed as follows a Turn the electrical supply to the water heater OFF b Remove the access door then turn back the insulation c Reset the control by pushing in the red button marked RESET d Repack the insulation then replace access door e Turn the electrical supply to the water heater ON 4 The capacity of the tank may have be
21. s flow can be forceful Provide a bucket or drainage for the expelled water Lift the lever and let it snap shut The water should stop immediately If the valve does not function properly it MUST be replaced In systems where the relief valve discharges periodically this may be due to thermal expan sion causing pressure build up See Pressure Build Up Thermal Expansion section Element Replacement See Draining Tank section to remove water from the heater Turn the electrical supply to the water heater OFF Remove the access door s and turn back insulation Disconnect wires from heating element terminals Unscrew the element using a 1 2 socket wrench or tool number 1008 available from your water heater distributor Replace element with new one taking care that sealing gasket is in the groove of element flange Re connect wiring and replace Di Electric shields Repack insulation over thermostat s and replace access door s Fill tank with water BEFORE turning ELECTRICITY on See Filling Tank section oon a ABWNR Thermostat Replacement 1 Turn the electrical supply to the water heater OFF 2 Remove the access door s and turn back insulation 3 Disconnect wires from thermostat s 4 Lift prongs off bracket and slide thermostat up and out 5 Replace in reverse order taking care that thermostat s is flush against the tank 6 Repack insulation over thermostat s and replace
22. sed with a fuel fired heater this drain pan must not restrict combustion air flow Caution Hydrogen gas can be produced in a hot water system served by this heater that has not been used for a long period of time generally two 2 weeks or more Hydrogen gas is extremely flammable and can ignite when exposed to a spark or flame To reduce the risk of injury under these conditions it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system Use caution in opening faucets When hydrogen is present there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow There should be no smoking or open flame near the faucet at the time it is open ID SAFETY Relief Valve Requirements Caution To reduce the risk of excessive pressures and temperatures in this water heater install temperature and pressure protective equipment required by local codes It should be no less than a combination temper ature 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 latest edition of ANSI Z21 22 CSA 4 4 Requirements for Relief Valves for Hot Water Supply Systems This valve must be marked with a maximum set pres sure not to exceed the marked MAXIMUM working pressure of the water heater
23. t water damage and it is protected from freezing OPTION 2 Install an expansion tank on the cold water supply line For every 50 U S gallons of stored water the expansion tank must have a minimum capacity of 1 5 U S gallons Temperature Relief The T amp P valve will discharge varying amounts of water but typically more than you would experience from thermal expan sion Check the temperature in relation to the setting on the thermostat dial A malfunctioning thermostat could cause the water to get too hot Cold water inlet Hot water outlet Anode s Temperature and pressure T amp P relief valve Alternate location of T amp P relief valve Thermostat with High limit switch Element Access door not illustrated Thermostat Drain valve Water supply to meter Water supply to water heater Water meter with backflow preventer Overflow Pressure relief valve Expansion tank Pipe Insulation mandatory if supplied with heater Items to be supplied by installer Options 1 and 2 show the location of pressure relief and or expansion tank if a check valve or pressure reducing valve is in the cold water supply to the house Use option 1 or 2 as convenient If a pressure relief valve is used OPTION 1 select one with a set ting 25 psi below the relief valve rating used on the Refer to pressure relief expansion tank schematic above Sg Nfe fitting Drain valve Certificate of Warranty See Rating Label
24. water supply This fitting must be aligned properly The line on the fitting must be oriented pointing up When in correct position the hot water is drawn from the highest point in the tank sure too high a temperature setting on the thermostat or something in the water heater causing excess temperatures in the heater Thermal Expansion When water is heated it expands For example in a 40 gallon water heater water being heated to its thermostat setting will end up expanding by approximately 1 2 gallon This extra volume creat ed by the expansion has to go somewhere or pressure will dramatically increase such as when water is heated in a closed system A good indi cation of thermal expansion is when the T amp P valve releases about one cup of water for every 10 gallons of heater capacity with each heating cycle The T amp P valve is functioning properly when it relieves pressure caused by thermal expansion but frequent relief can result in a build up of natural mineral deposits on the valve seat rendering the valve inoper ative Should this happen the T amp P valve needs to be replaced To prevent this T amp P VALVE from discharging hot water the loss of energy and reduce the possible build up of lime in the T amp P VALVE there are two 2 recommendations OPTION 1 Install a 125 PSI Pressure Relief only valve in the cold water supply line Make sure that the discharge of this valve is directed to a drain to preven
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