Bosch Hot Water 16H Manual

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We have 1 Bosch HydroPower TF400-8G(16H) manual available for free PDF download: Installation Manual And Operating Instructions. It's winter here and I have two small children, any ideas what I can do to fault find or solve the problem. Please help Like Share More No answers Gurth P. asked 2 months ago HydroPower 16H My bosch hydropower is dripping a bit what can i do Like Share More No answers Graeme Ware asked 2 months ago HydroPower 16H Does the heater require an external regulator when connected to LPG Like Share More No answers John T. asked 2 months ago HydroPower 16H ouir heater is outside and the last couple of days it has been very frosty, as a result the unit froze. Is there any way that I can insulate the heater to stop it from freezing Like Share More No answers Daniel Whittington asked 3 months ago HydroPower 16H Hello all, Last night we had a large storm which the wind blew off the side removable lid of the Bosch. Learnt that the two side screws where the only thing holding it in which I will put new mounting because of this. Anyway. We heard this happen, got up straight away, went into the “rain” to fit the side lid back on. The Bosch did get water on the inside when we were doing this. I have not had time to look at this more deeply I am guessing there is a PCB electronic board in there that maybe fried because of the rain on it. But I wanted to ask here to see if anyone else has had this issue and what they did to solve this problem. Thank you, Daniel Maurice Whittington Like Share More 1 answer Daniel Whittington 3 months ago Waited and I guess it dry out and now it works. Out of it Like Report Helmut asked 3 months ago HydroPower 16H very hard to get hot water Like Share More 3 answers Helmut 3 months ago after 2 years still very hard to get hot water Bosh 16H Like Report James B. 3 months ago these systems are useless.And i think that my hot water system has done this before under sillier circumstances from memory. http://www.investgeorgia.ge/userfiles/bosch-pfz-550-manual.xml

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It just would not provided hot water only cold, no matter how much water I let flow through the pipes. I tried at different times during the day to have short or long bursts of water but to no avail. Then phoned for help from the Bosch techs and asked for a service provider. And asked for any tips or tricks of the trade to see if something would help. The employee said turn on hot tap to flow. Then off. Then for about ten times short bursts with one tap valve only, of on and off and one and off repeats to PURGE the pipes and mechanisms to kick start the hot water mode (My wording not his). That did not seem to work as there was not hot water when I left the tap running for usual time. So I tried it again - that did not seem to work either. But intuitively I just let it flow a little longer as if the previous steps may have triggered something. And hallelujah, warm water then hot water was steaming out without a lot of water waste in between, at the full pressure and with only one tap valve open. I hope this helps someone else. Hopefully I remember this for next winter. Like Share More 1 answer James B. 3 months ago if you have poor water pressure the only way to get it to kick in is to turn off wait a minute then turn on your best hot tap in the house - mine is my kitchen tap.The unit lights up but will only heat up to Luke warm water. Flame looks OK, Water Flow is OK. Seems to be some sort of gas starvation. Rest of the LPG gas household appliances are working OK. Have changed the gas bottle in case it’s a bad bottle but no success. We have had the unit work normally on 2 occasions in the past week but it soon reverts to Luke warm again. Getting a qualified technician in very difficult due to the remote location. It would cost me the price of a brand new unit to get a technician onto the site to repair the unit. Could I please get a parts breakdown do I can check the gas route. http://copy2d.com/ftp/image/bosch-pfz-550-manual.xml

My opinion is either the thermostat is reducing the gas flow or the regulator inside the unit has an issue. Thanks, John 1 like Share More No answers Terry Howlett asked 7 months ago HydroPower 16H On a 16h Hydro Unit - Does the cold water connection need a Pressure Limiting Valve Like Share More No answers John C asked 7 months ago HydroPower 16H Just wondering if you have to service your Bosch Gas Hot water system. Cheers John Like Share More 2 answers mrammelt 7 months ago Only the diaphragm, clean the burner, vacuum etc all good. We always suggest that an appliance service and safety inspection is conducted every 2 years by an approved agent. This will ensure that you get the most out of your appliance. To get in touch with an agent, please get in contact with us at 1300 30 70 37 any time between 7:30AM and 6PM (AEDT) on a weekday. If after this, the unit still doesn't work, isolate the valves at the unit for 20 seconds, then open and retry. If after this, the unit still isn't igniting, please get in contact with us at 1300 30 70 37 any time between 7:30AM and 6PM (AEDT) so that we can get you in touch with a qualified service agent. Like Report Jeff B. 2 weeks ago Hi Robert at Bosch Hot Water Heating. We have a Bosch Hydropower as our only water heater. We have two showers. The water temperature in one of the showers is fine. But the temperature in the other shower constantly fluctuates between scalding hot and cold. What can we do? Is is about the two setting controls on the face of the heater. Thanks, Jeff Like Report Arthur JACOBS asked 11 months ago HydroPower 16H How do I light it Like Share More 6 answers Arthur JACOBS 11 months ago Hello Like Report David 11 months ago The unit should light when you start water flow through the hot tap. We have found that the ignition sparks but the unit is spasmodic at starting and we now turn on one or more taps to get maximum water flow and it mostly starts after about 5 to 20 times. http://www.drupalitalia.org/node/67654

We are almost at the point of replacing with another make of unit and dread the arrival of our next water bill. Like Report Arthur JACOBS 11 months ago Thanks for answering I will try and see how I go Like Report View 3 more answers Samantha B. asked 1 year ago HydroPower 16H Our hot water went out yesterday and we cannot get a gas fitter till who knows when. It clicks but no hot water. The unit has most likely locked out due to a failure to ignite. We suggest that you turn off all the hot water taps and try again. If the unit still doesn't work, you will need to isolate the valves at the unit for 20 seconds, then reopen the valves and try again. If the unit still won't work, we suggest that you refer to a qualified service technician by getting in touch with us at 1300 30 70 37 any time between 8:30am to 6:00pm (AEST) from Monday to Friday. Like Report Damo asked 1 year ago HydroPower 16H Hello, Our. Bosb hydropower 16H is not heating. We have turned the hot water on for awhile to see if it reignites and nothing happens. Gas is ok, what else could be going wrong.Which was broken and slowed the flow of gas hence why it would not heat up 1 like Report Damo 1 year ago Thanks Thos could be the issue we are booking a service on it. It is likely that the unit has locked out due to the failure to reignite as you mentioned. You will need to turn off all hot water taps and try again. If it still does not reignite, then isolate the valves at the unit for 20 seconds. Then open and retry. If after this it still fails to ignite, please refer to a qualified technician, our friendly customer service team can assist you. Please get in touch at 1300 30 70 37 any time from 8am to 6pm (AEST) during the weekday to assist you. 1 like Report View 1 more answer Ken asked 1 year ago HydroPower 16H Where can I download the parts list, (parts diagram, parts manual) for the Bosch Hydropower 16H water heater. I need to order parts. Can anyone please advise a link. Thanks in advance. http://columbuscigar.com/images/bosch-home-appliances-manuals.pdf

Like Share More No answers Ken asked 1 year ago HydroPower 16H Where can I download the parts list, (parts diagram, parts manual) for the Bosch Hydropower 16H water heater. Like Report Paul asked 1 year ago HydroPower 16H Our bosch 16H has been playing up, the water is only warm and when we have a shower i turn the hot tap on its only warm and when i turn on the cold the hws cuts out and both taps deliver cold, the flames go out as soon as i turn the cold on, is this a flow issue. The house is on rainwater only and we have a Davey HS50-06T pump which is supposed to be more than adequate to supply our house 1 like Share More 3 answers Lucei 1 year ago Sorry, no idea, can't even solve my issue with the unit. Have spoken to many Plumbers who said Bosch won't admit fault these days. Apparently they used to be very good but not now. It's great to hear that you have a constant pressure pump as we do recommend one for the HydroPower unit. Based on your description, we believe it could be a flow issue. Also dependant on the age, it could be due for a general service. It is recommended that all gas burning appliances are serviced at regular intervals. Bosch recommend every 2 years. For further troubleshooting, please get in touch with us at 1300 30 70 37. Our line is toll-free and we are available from 7:30am to 6:00pm (AEST) Monday to Friday. 1 like Report Patti Woolnough 1 year ago We recently had an issue with the 13H. When you turn the hot water on make sure you can hear the water turbine whirring fast. You can sometimes get debris caught in the bypass valve that is in the turbine assembly which jambs it open severely reducing its speed and voltage output. It simply shuts the gas solenoids off. The turbine assembly can be removed, dismantled, and cleaned out relatively easily. Like Report Andrew asked 1 year ago HydroPower 16H We live rural, our water supply comes from a header tank which is 30m higher than the house. I have been advised to get a Rinnai or a Rheem. http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1626d29140a455---case-586g-service-manual.pdf

If you have any further queries, please don't hesitate to get in touch with our team at 1300 30 70 37. We are available from 7:30am to 6:00pm (AEST) Monday to Friday and our line is toll-free. Whether you love or loath being in the kitchen, our community of reviewers have determined that out of almost 5,000 appliances on ProductReview.com.au, these are the best available! Nathan S. Nov 01, 2019 Best Fridges and Dishwashers in 2020. These large kitchen appliances are the backbone of your kitchen, meant to last you many years. The initial cost of a fridge or dishwasher is high, so to make sure you're not buying a lemon, here are the best fridges and best dishwashers of 2020. ProductReview.com.au has affiliate partnerships. Call: (08) 8444 7311 Bosch hot water systems are very economical to run and provide high energy efficiency ratings. Adelaide Hot Water TM install, service and repair Bosch hot water appliances and here we have provided customers with a range of Bosch hot water manuals. The manuals cover the Bosch Highflow, Hydropower, Internal Compact, Pilot Ignition, the condensing gas range and Bosch commercial hot water. We can install, service or repair your Bosch hot water in the Adelaide metro and local country area within 24 hours. Give us a call now for our very best prices on Hot Water Adelaide and Bosch hot water systems on 8444 7311. The system only ignites when a hot water tap is opened. Once the hot water tap is closed, the system turns itself off. The principle for this revolutionary ignition system is to create a supremely efficient appliance that is simple and easy to install. In areas prone to extended periods of frost and sub-zero temperatures, only Internal Compact models, external High Flow models, 32 Series models, and the 32C are suitable. As a result, Bosch now offers the largest range of continuous flow gas hot water systems on the market. BAIGIANGTOANHOC.COM/upload/files/canon-ipf700-service-manual-pdf

All Bosch hot water systems are manufactured to the highest possible standards, using premium quality materials. Due to their excellence in energy effiiency, Bosch water heaters provide considerable savings on running costs today and help preserve the environment for tomorrow. Each technician has received training from the manufacturer and are fully licenced. With a response time second to none, and a large selection of spare parts on board, 1st Choice Hot Water will get your hot water running to its full capacity very quickly. We also have very competitive hot water system prices. Suitable for heating potable water only - Not approved for space heating purposesWarning: If the information in this manual is notDo not store or use gasoline or other flammableImproper installation, adjustment, alteration,In the Commonwealth of Massachusetts thisUpon completion of the installation, theseWhat to do if you smell gasIndex. WarningFeatures. GWH-635-ES Specifications (Technical data). Dimensions and Minimum installation clearances. General rules to follow for safe operation. Proper location for installing your heater. Clearances. Mounting installation. Combustion air requirements. Venting. Venting options. Gas line sizing. Measuring gas pressure. Water connections. Electrical connections. Operating instructions. For your safety read before operating your water heater. Lighting and operating instructionsPower. Temperature selection. New remote control registration. Operation. Reset button. Program button. Locked conditionInterior components. Components diagram. Parts listSelecting adjustment modeWarning: If the information in thisWarning. ImproperFor assistance or additional informationUpon completion of the installation,Featuring. Electronic Ignition and Power Venting. For your safety. {-Variable.fc_1_url-

Do not store or use gasoline or other flammable,Warning: Carefully plan where youWarning: Exhaust gas must be ventedWarning: Place the heater in a locationWarning: Field wiring connections andCanadian Electrical Code, CSA C22.1. Part 1. Warning: Shock hazard line voltage isWhat to do if you smell gasFig. 1Warning: The heater must beCaution. Any changes or modifications not expresslyFig. 2Appliance detailsMaximum input. Parts. Efficiency in Recovery efficiency 86.5Min. OutputTemperature Control. Safety. Gas Requirement. Gas connection (inches) - ?”. Inlet gas pressure under operation (with a high hot. High Quality Materials for Long Working LifeFeaturesGas pressures. LPG will result in insufficient degree rise to the hotAccessoriesBOSCH is constantly improving itsFig. 3. Gas pressure measuring point. VentingSee chapter 2.9 for Venting on page 9. Water. Capacity. Sulfid). Maximum outputPSI (2.07 bar)CombustionDimensions. Gas types. Natural Gas. LP Gas. Converting the gas type can only be done by a certifiedCEC for conversion instructions. This heater is packed securely.Do not lose this manual. Please complete and returnBefore installing the unit, be certain you have theNatural Gas. Identification labels are found on theTo remove front cover. VoltageAmperage. IDLE - 40 mA. Operation - ? 2,5 A. Noise. Plastic decalsSafety devices. Water resistant. IP X4 (protection against water drops). Fig. 4Remove front coverFig. 5. Dimensions. Cover. LCD display. Temperature buttons. Fig. 6. Minimum clearances. Model GWH-635-ESB 1. You should follow these instructions when youIn Canada: The Installation should conform withB 2. Carefully plan where you install the heater. CorrectB 3. When the unit is installed indoors and ROOM. SEALED (twin pipe) it is permitted to be located inSee chapter 2.9. If the unit willB 4. You must vent your heater. See section onThe appliance and its gas connection must be leakB 6. Keep water heater area clear and free fromDo not locateB 7. http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1626d29f01f5bf---case-588g-manual.pdf

Correct gas pressure is critical for the optimumGas piping must be sized toB 8. Should overheating occur or the gas supply fail toNote: manual gasB 9. Do not use this appliance if any part has beenCarefully select the location of the water heater. ForFollow the guidelines below. B 1. Locate the heater where venting, gas andB 2. It is strongly recommended that the heater beB 3. The hot water lines should be kept short to saveWarning: The water in this waterTo prevent any freeze damage,Warning. FlammableThe applianceThe GWH-635-ES is design certified for installation onSee also Fig. 6. A. Top 12 inches (306 mm). B. Front 4 inches (102 mm). C. 0 inches. D. Sides 4 inches (102 mm). E. Bottom 12 inches (306 mm). Clearances from any exhaust vent pipe are dependentSingle wall stainless steelWarning: before starting installation. B check that there are no loose partsFig. 7. Mounting the heater. B ensure that gas pipe, gas valve, mixer,Front cover should be removed (seeThe GWH-635-ES is design certified for mounting on aDo not install this appliance on a carpeted wall or overThe heater must be mounted on a wall usingIf the mounting bracket is unable to line up on two wallThe heater should be kept levelExpansion and contraction of piping due to changingBefore installing the unit, be certain you have theNatural Gas. Identification labels are found on theThe GWH-635-ES is a sealed water heater and it isObserve all local building codes when penetrating aThe heater has the ability to operate withoutObserve the followingThe confined space must be provided with twoOr the confined space must be provided with oneThis openingLouvers, grills and screens have a blocking effect. If theRefer to the National Fuel. Gas Code for complete information. In buildings of tightWarning: Do not reduce the ventNOTE: This appliance's exhaust must be ventedThe heater shall notCaution: The vent system must beMonoxide poisoning could result. BAIDUVPN.COM/upload/files/canon-ipf700-plotter-manual.pdf

CECEstablish vent clearances that comply with the ventIn all cases follow localVenting. Options. ExhaustCombustionCombustionVent pipeVent pipeRoomOpenSeeSeeExhaust vent is always fan assisted. Installation of exhaust vent and combustion air piping may be run vertically or horizontallyNOTE: clearance distances areNever reduce pipe diameter. Table 2The appliance should be located as close to the pointThe maximum vent length isSubtract 2?Any vent section greater thanNote: The stainless steel exhaust vent pipe should notIf the vent system passes throughThe distance toNote: Type-B vent should never be used as theNote: reduce 2? ft for each elbow used after the firstVent Safety System. The GWH-635-ES will shut down if inadequate exhaustAttaching the exhaust and air inlet connectionMinimum exhaust vent size and length. Fig. 10. Fig. 8. Maximum vent lengths. Fig. 11. B Attach the flue gas exhaust accessory (8 705 504Fig. 9B Attach the combustion air inlet accessory (8 705NOTE: The appliance has theInstalling this water heater as a room sealed (TWIN. PIPE SYSTEM) is the recommended method. Contact. CEC or dealer for available vent termination kits andExhaust venting shall be done with 3”Room sealed installation (TWIN PIPE SYSTEM). The exhaust vent pipe and combustion airMaximum length for each individual pipe isOpen combustion installation (SINGLE PIPEFig. 12. Exhaust vent pipe: ? 26 ft (8 m). Combustion air pipe: ? 26 ft (8 m). Fig. 15. Fig. 13. Note: reduce 2? ft for each elbow used after the firstConnecting a one piece 90 degree elbow pipe to theNote: reduce 2? ft for each elbow used after the firstRecommended exhaust vent terminator position. Fig. 16. Ref. Description. Minimum distance. Directly below an opening; operable windows, doors and any nonmechanical fresh air openingsBelow a gutter, sanitary pipework or eavesBelow a gutter, sanitary pipework or eaves, protected by metalFrom any internal cornerAbove groundAbove a paved sidewalk or driveway. From an opposing wall or structure facing the terminationFrom any other building opening, gas utility meter, service regulatorFrom a terminator facing a terminatorVertically between two exhaust vent terminators on the same wallHorizontally between two exhaust vent terminators on the same wallHorizontally from combustion air inlet of 635-ESVertically above combustion air inlet of 635-ES. From the combustion air inlet of any appliance or below theFrom any external cornerHorizontally from an opening; operable windows, doors and anyVertically from a wall, roof slope, or obstruction (venting through aTable 3Supporting the exhaust vent system and the useExternal condensate traps. B A condensate trap must be used in any sidewallB A condensate trap must be used for any verticalB When installing the condensate tube at the bottom ofThis tube must beFig. 18 Above the roof clearance requirements fromThe venting materials and accessoriesFig. 17 Horizontal side wall venting installationFig. 19 Vertical venting installation (combustion airBefore connecting the gas supply, check the ratingIn the United States: The installation must conform withIn Canada: The Installation should conform with CGAApplicable Plumbing Code for a maximum draw ofUse the charts in Fig. 22 toNote: It is important that if any flexible gas line is used,Fig. 20 Vertical venting installation - Masonry. Chimney (combustion air piping not beingInlet gas particle screen. Gas piping. Fig. 21. B Install a manual gas shut off valve, on the gas supplyB The use of a union when connecting gas pipe to theB Flexible gas line connectors are not recommendedMaximum Capacity of pipe in Cubic Feet of Gas per. Hour for Gas Pressure of 0.5 Psig or less and a. Follow boxed numbers for piping just one GWH635-ES (example: ?” B.I. Natural Gas pipe for 20 ftNominal. Iron. Length of Black Iron Pipe, Feet. Pipe. Internal. Size. DiameterHour of Undiluted Petroleum Gases (at 11 inches. Water Column Inlet Pressure) (Based on a Pressure. Drop of 0.5 Inch Water Column). Nominal. Black Iron Pipe. Iron Pipe. Length of Pipe, Feet. Size,Length of Tubing, Feet. Outside. Diameter. InchColumn)B It is strongly recommended that the Natural Gas pipeBlack Iron pipe up to 20 feet (6.1m) and 1” Black IronNOT recommended, but if used, then oversize theB It is strongly recommended that the LP Gas pipe beWarning: The heater must beSee Gas Connections,Fig. 23 Gas pressure measuring (left tapping)Altitude. Liquid. Propane:Burner output at altitudes greater than 4000 ft (1219Follow instruction below. High altitude adjustment. B Disconnect power supply to heater. The water heater must not be piped with gas supplyWhen connections are made, check for gas leaks at allB Remove front cover of heater. B Remove control box auxiliary cover (Fig. 24, pos. 4). Danger: If you have a leak, shut off theNever test for gasTo measure and verify if adequate gas pressure is beingFig. 24B Remove the 5 screws on the front retaining bar (see. Fig. 24, pos. 1 and 2) being careful not to damageB Remove the two electrical strip connectors inside theRubberOnce auxiliary cover isOnce off, the wiringFig. 25 Electrical strip connectors. B At the ignition electrodes, pull off the 2 yellow igniterHigh altitude adjustmentFig. 26 Control board adjustment for high altitudesFor altitudes greater than 8000 ft (2438 m),When facing the heater, the ?” cold water inlet is on theB While holding the board in one hand or resting it onTo make theB Remove the jumper from the JP3 pin (see Fig. 26). B Line up the two jumper sockets with the two JP3B Insert the jumper. B Replace the front cover to the control board and reinsert into heater and then proceed with previousBe sure that the rubberB The use of a union when connecting both waterAlthough water piping throughout the building may bePlastics or other PEXKeep water inletIf the cold and hot connections to the heater areBe certain thereBlow out orFull port valves should be installed on both the coldConnecting the pressure relief valve (PRV). A listed pressure relief valve supplied with the heaterNo valve isThe discharge line must be aThe location of the PRV must be readily accessible forPRV, a suitable fitting connected to an extension on aSupport all piping. Fig. 28 Plumbing Connections and Pressure Relief. ValveWarning. ForWarning: This heater must beNational Electrical Code. NFPA 70. In. Canada, all electrical wiring to theCode, CSA C22.1 Part 1. Do not relyThe GWH-635-ES requires an electrical power supplyA means for switching off the 120VAC power supplyThe heater is wired as shown in the wiring diagramB Before proceeding with the operation of the heaterB Turn off power supply to heater. B Open the cold water inlet supply to the heater fully. B Open a hot water faucet to permit the water to fill theB Close the hot water faucet after the water flows freelyThe water heater is nowNOTE: when the heater is turned on itsAdditionallyWarning: If you do not follow theseA. This appliance is equipped with electronic ignition forWhen turning the heater on,B Do not touch any electric switch; do not use anyB Immediately call your gas supplier from a neighborsB If you cannot reach your gas supplier, call the fireNever use tools. Follow these instructions exactly. IfAttempted forceful repairD. Do not use this appliance if any part has been underB 1. STOP! Read the previous safety information. OFF switch to position (0). Wait five (5) minutes toIf you do not smellB 3. This appliance is equipped with electronic ignitionWhen turning theB 5. Open a hot water tap. B 6. The burners will remain on until the hot water tapNOTE: on a first time initialWhen the heater is in operation you will hear its powerUpon turning off the hotOperation instructions. Fig. 29. Program Key. Increasing temperature selector. Decreasing temperature selector. LCD displayPower. On. B To start the appliance switch the button to positionFig. 31. If the outlet water temperature is set too high, the heaterIn the event of any temperature instability with the useAdditionally the temperatureFig. 30. Off. B To shut down the appliance switch the button toTo select water temperature outlet:Setting the water temperature. The desired temperature of the hot water can beThe GWH-635-ES has an electronically controlled gasInlet (?F) 40. Inlet (?F) 50. Inlet (?F) 60. Inlet (?F) 70Inlet (?C) 4. Inlet (?C) 10. Inlet (?C) 16. Inlet (?C) 21Fig. 35. Fig. 33 Remote control. AfterRemote control registration. B Press and holdB press reset button in order to make the applianceLCD shows one number and one rotating digit. The number represents the remote control which is toThe rotating digit shows that the electronics isB Hold remote control in front of the control panel onFig. 36 Reset button. If the problem persists, contact your installer.New remote control is programmed.Program button. Each remote control program button canProgramming “Program” function. Programming actions are similar for both controlsOperation. B When a hot water tap is opened, main burner ignitesB Press “Program” key (Fig. 29, pos. 3) for 3 seconds. Fig. 34. B LCD blinks until selected temperature is reached.See the error code on LCD andReset button. Temperature on LCD starts blinking, showing currentB Press buttonsB Hold “Program” button for 3 seconds to saveScale build upWhen LCD stops blinking. Temperature is saved onUsing “Program” function. In order to select memorized temperature. Introduction. B Press “Program” key. LCD shows pre-memorized temperature, which is nowThis condition is only valid for appliances with moreFig. 38 Locked condition. Whenever LCD showsAppliance will be automatically unlocked after closingMaintenance and service. Warning: Always turn off the electricalThe unit should be checked once a year by a gasTo remove front cover. B Remove plastic decals on front panel. B Undo two Philips head screws located behindB Lift front cover panel upward and remove. Systems and parts that should be checked atReference diagrams on pages 30 and 31.Troubleshooting. The GWH-635-ES burner is activated by a water flowThese water flow related problems can cause theProblems stated below in upper case and in bold faceAny failures that result in a displayed error code areA Functional Scheme of the. GWH-635-ES is detailed on page 29. If there is aMake sure cold water inlet connection is plumbed toRemove water inlet filter screen and clean. TheThe heater activates when there is sufficient water. If there is a crossover in theA plumbing crossoverSee specifications in chapter 2.10 - 2.12. The. GWH-635-ES requires adequate gas pressure toGWH-635-ES will effectively reach the selectedTest by following 4th bullet under BURNERS DOThe GWH-635-ES will effectively support two 2.02.5 gpm shower heads simultaneously or multipleIn such cases whenIf the outlet water temperature is set too high, theAdjustments should be made to the hottest setting inFor installation on a private well system with the useWatts brand 25AUB?” or N35B-?” pressure relief valves or equivalentSee specifications in chapter 2.10 - 2.12. The. GWH-635-ES requires adequate gas pressure toIts motorized water valveProper gas pressure willRemove water inlet filter screen and clean. TheDisplay. Cause. SolutionCheck gas pressure. Check that gas is not diluted with air, as a. Check if vent terminal is blocked (speciallyCheck water valve and flow sensor.Table 5Electrical diagram. Fig. 39 Electrical schemeIonization sensor.