bosch 125fx manual

bosch 125fx manual

Refer to this manual. There is a set of installation instructions in the FXHOOD box.See page 5 for instructions. Do not locate the heater over any material that might burn. Do not install heater over carpeting. To prevent this the FXHOOD horizontal vent terminator, which is supplied separately with the water heater, needs to be installed on the end of the horizontal vent run (see page 7). The FXHOOD is a CSA approved vent terminator for the Aquastar 125FX and has a built in back draft flapper. Use the screws provided. See figure 3. Locate in accordance with ANSI Z223.1 and local applicable codes. See Fig 5 for restrictions in location of vent terminal in relation to opening doors and windows, grade, and forced air inlets. To install the PRV, a suitable fitting connected to an extension on a “T”. There should not be any water flowing at that faucet. Water running is a sign of a plumbing cross-over. Locking usually happens when the gas pressure between the gas tank and the water heater’s gas regulator has not been properly regulated. See Page 2 for recommended correct gas pressure. To unlock a regulator, consult your gas supplier or call CEC. See specifications on page 2. Unlike storage tank water heaters, the burners of a tankless. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier. Upon completion of the installation, these instructions should be handed to the user of the appliance for future reference. In the Commonwealth of Massachusetts this product must be installed by a licensed plumber or gas fitter. A fire or explosion may result causing property damage, personal injury or death. Page 4 Locating the Heater. Page 4 Combustion Air Requirements. Page 5 Mounting the Heater. Page 6 Venting the Heater. Page 7 Gas Connections. Page 10 Water Connections. Page 12 Electrical Connections. Page 13 Safety before turning on the heater. Page 14 Lighting and Operating instructions.http://gardensyellowcab.com/admin/images/hallicrafters-sx-42-manual.xml

• bosch 125fx manual, bosch 125fx manual, bosch 125fx manual pdf, bosch 125fx manuals, bosch 125fx manual download, bosch 125fx manual instructions.

Page 14 Setting water temperature. Page 15 Trouble Shooting. Page 16 Diagram of AquaStar. Page 20 Components and Parts List. Page 22 Warranty. Page 25. If you have problems accessing your account, please contact us at 1-888-757-4774 and we'll help you out. Bosch AquaStar Model 125FX Whole house Tankless gas water heater, 125,000 Btu input, built in power vent with electronic ignition, horizontal venting only. Provides endless hot water for one major application at a time (one shower at a time). Can replace 40-gallon storage tank water heater.Add item to cart for lowest price.Manufacturer's warranty still applies.Join our mailing list to receive exclusive offers and coupons. In the Commonwealth of Massachusetts this product must be installed by a licensed plumber or gas fitter. FEATURING: Electronic Ignition and Power Venting INSTALLATION AND OPERATING INSTRUCTIONS FOR AUTOMATIC INSTANTANEOUS TYPE WATER HEATER FOR USE WITH NATURAL AND LIQUEFIED PETROLEUM GAS MODEL 125FX LP and 125FX NG (Flow Modulated with Electronic Ignition and Power Venting) Suitable for heating potable water only Not approved for space heating purposes Intended for variable flow applications with steady cold water inlet temperatures WARNING If the information in this manual is not followed exactly. A fire or explosion may result causing property damage, personal injury or death. FOR YOUR SAFETY 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 - Close gas valve. Open windows. - 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. Specifications.http://www.point.travel.pl/pointtravel/upload/hallicrafters-sr-46-manual.xml

Page 2 Rules for safe operation. Page 4 Locating the Heater. Page 4 Combustion Air Requ irements. Page 20 Warranty. Page 23 TABLE OF CONTENTS 6 720 606 601 US (06.01) AL Sign up now. There is 3 optionUser Manual For W 125 Flworcester Bosch thank you. Download hier gratis uw Junkers W 125OXY PLUS handleiding. Of stel een vraag aan een andere bezitter van uw product als uproblemen heeft met uw.Bosch model 125fx lp and 125fx ng user manual(20 pages). Water Heater Bosch 125FX.Junkers Bosch ISH 2015 - BauNetz Junkers Filmdokumente - Verkehrsflugzeug im.DT 10 DT 20Installation manual for theheater. Request anyowner's manual, instructions book, user's guide, service manual,schematics, parts list.Asian Perspectivesis the leading archaeological journal devoted to theprehistory of Asia and the Pacific region. In addition to archaeology, itfeatures articles. Bosch Appliances Water Heater manuals, user manuals, owners manualsthem the W125 model water heater when you request the LPGcomponents they. 350, 400-5 KB w 275-2 Ke, w 275-2 KP, wr 250,275-1 KP w 125-2 KP, w 275, 350, 400-1 These are the download linksfor Junkers Gas Water Heater W275 Manual.Junkers W 125 User Manualgas water heater. W 125 T1 Water Heater pdf manual download. Bosch model 125fx lp and 125fx ng user manual (20 pages). Water Heater Bosch 125FX.You are here: WATER HEATERS Posts JUNKERS W125 JUNKERS INSTANT HOT WATER HEATERS JUNKER CERASTAR MANUAL GUIDE JOVEN. No other Manuals with the Exact Same Model Number and Manufacture. If you want to search this text, hold control and F, and type the word you are looking for.http://neufranewte.eklablog.com/genesis-sm100-manual-a203811054

Page: 1 BOSCH INSTALLATION AND OPERATING INSTRUCTIONS FOR AUTOMATIC INSTANTANEOUS TYPE WATER HEATER FOR USE WITH NATURAL AND LIQUEFIED PETROLEUM GAS MODEL 125FX LP and 125FX NG ( Flow Modulated with Electronic Ignition and Power Venting ) Suitable for heating potable water only Not approved for space heating purposes Intended for variable flow applications with steady cold water inlet temperatures WARNING If the information in this manual is not followed exactly. Open windows. - 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.Theheatexchangecroilsabsorbtheheatr.Water Pressure 18 Psi overyourhotwaterenergyuse. Safety flame sensor at pilot burner. Stainless steel burners with stabilized blue flame. Easy one person installation. Pressure may need to be adjusted for U N PACKI NG TH E AQUASTAR H EATER high altitudes, see page 10. This heater is packed securely. The box includes one water connection fitting, a control knob, a gas pressure regulator, a pressure relief valve, an incandescent particle tray, two hooks for hanging the heater, an exhaust collar, this manual and a warranty registration card. Do not lose this manual as there is a charge for replacement. Please complete and return the enclosed warranty registration card. The FXHOOD horizontal vent terminator is supplied separately from the 125FX water heaters.C AQUASTAR MODEL 125FX 6 720 606 601 3 Page: 4 GENERAL RULES TO FOLLOW The heater may still operate even when improperly vented. It will, however, be less efficient and could eventually damage FOR SAFE OPERATION the heater. It could even result in human sickness or death due to oxygen deprivation and carbon monoxide poisoning.http://meslickralo.eklablog.com/genesis-s-310-manual-a203811058

1. You should follow these instructions when you install your Before installing the unit, be certain you have the correct heater. In the United States: The installation must conform heater for your type of Gas - Propane or Natural Gas. Carefully plan where you install the heater. Correct combustion air supply and flue pipe installation are very 1. National building codes require that you do not install important. If not installed correctly, fatal accidents can be this appliance in bathrooms, bedrooms, unvented closet caused by lack of air, carbon monoxide poisoning or fire.Simultaneous operation of other appliances such as enough ventilation. The National Fire Codes do not allow exhaust fans, ventilation systems, clothes dryers, fireplaces gas fired water heater installation in bathrooms, or wood stoves could create a vacuum effect in your home bedrooms or any occupied rooms normally kept closed.You must install your heater so that the venting complies through the flue. Confirm that your Aquastar is venting with all requirements. See section on Venting the Heater, properly when all these other appliances are running. See pages 7 through 9.Proper air supply to the appliance is essential. Failure to properly vent a dryer appliance and its gas connection must be leak tested before could result in a gradual accumulation of lint on the water placing the appliance in operation.Do not locate the heater over any 3. Your hot water lines should be kept short to save energy.Do not install heater over carpeting. This heater is neither designed for chart on page 10 ). Gas piping must be sized to provide the nor approved for outside installation. Drain the heater required pressure at the maximum output of the heater.Should overheating occur or the gas supply fail to shut flex line from where it connects to the copper heat off, turn off the gas supply at the manual gas shut off valve exchanger ). Additionally, remove the drain plug under the on the gas line.

Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control that has been under water.The appliance area must be kept abundant supply of combustion air and a proper venting free of all combustible materials, gasoline and other installation.Because of this, any cold air that comes in through the Each opening must have a minimum free area of one square unit's vent pipe is capable of freezing these components.A wood stove or furnace can rob the opening or duct that is within 12 inches of the ceiling of the make - up air in the AquaStar's vent pipe, leaving the cold enclosure. This opening must have a minimum free area of infiltrating air capable of freezing the cold water in the one square inch per: AquaStar heat exchanger.If the effective free area is not known, assume it is 20 % to 25 % horizontal vent run ( see page 7 ). Refer to the National Fuel Gas Code for built in back draft flapper.In buildings of tight construction all Observe the following instructions concerning combustion air should be taken from outside. air. This product is not approved for manufactured homes Appliances located in unconfined spaces: ( mobile home ), recreational vehicles ( RV ) or boats.That would installations.Top 12 inches ( 305 ram ) B. Front 4 inches ( 102 ram ) C. Clearance from the vent pipe is dependent upon the clearance rating of the venting material used. See VENTING section. Use The Aquastar 125FX is design certified for mounting on a the screws provided. See figure 3. wall. Secure the two L shaped hooks, which are provided with heater, to a wall surface. Do not install this appliance on a carpeted wall or over floor LJ covering which is combustible, such as carpet. NOTE: Additionally the 125FX should be spaced away from any combustible wall surface to provide the necessary clearance that the venting material specifies must be maintained between the vent pipe and a combustible surface.

See VENTI NG section. Also, review the FXHOOD horizontal vent terminator instruction sheet ( provided with the FXHOOD ) prior to installation. In earthquake - prone zones, BBTNA recommends that installers use a large washer and lag screw through the existing holes used to hang the heater to affix the upper third of the heater to the mounting board. To affix the lower third of the heater, BBTNA recommends that two new holes be drilled in the heater's frame, each one 16 inches below the top two holes, and that washers and lag screws be used to secure the lower portion of the heater to a spacing board. Expansion and contraction of piping due to changing water temperature in the pipes imparts movement to the heater which, if mounted directly to a brittle, friable board, such as plasterboard, can cause failure of mounting. No more than four 90 - degree elbows may be used. Any vent stove. section greater than 45 degrees is considered an elbow. The appliance's flue Note: Single wall pipe should not be used in concealed, gasses are under positive pressure and must travel through unoccupied or unheated locations. If the vent wall vent pipe can be either stainless steel ( AL29 - 4C ) or system passes through combustible areas where the vent galvanized steel with at least 26 gauge. B BTNA recommends clearance requirements cannot be maintained, it is the use of stainless steel vent pipe ( which is equipped with permissible to chase straight sections of sealed 4 inch single sealing gaskets ) for ease of installation and durability. When wall vent through 5 inch ( or greater ) Type - B vent. The using galvanized vent pipe a minimum of 4 sheet metal distance to combustibles using this chase technique is 1 screws per connection must be installed and all seams must inch. Note: Type - B vent should never be used as the actual be sealed with an approved high temperature silicone vent system for the 125FX, as it is not gas tight. sealant. The vent system must be gas tight. See Fig.

4 for suggested venting installation diagrams. Freeze Warning: As mentioned on Page 5, negative air pressure in cold The 125FX shall not be vented in combination with any climates will cause a reverse airflow in the vent system that other appliance. This appliance may only be vented can freeze and damage the Aquastar heat exchanger when horizontally with a dedicated sealed single wall vent. The not in use. To prevent this the FXHOOD horizontal vent 125FX shall not be vented into masonry chimneys or existing terminator, which was supplied separately with the water vertical vents of any material.The FXHOOD is a CSA approved CAUTION: 125FX vent system must be installed by a qualified vent terminator for the Aquastar 125FX and has a built in agency in accordance with these instructions. If improperly back draft flapper.BBT North America will Flue Gas Sensor: not be responsible for improperly installed appliances. Before leaving the installation site verify proper manufacturer's specifications. In all cases follow local codes. Flue Gas Sensor operation by temporarily blocking See table below.The appliance should be gases are blocked. You must reset the electrical power to located as close to the point of termination as possible ( see the heater after this safety test has been conducted, Fig. 5 for locating the terminator ). The vent system should otherwise the unit will not operate.Maximum vent length is 15 feet ( 4.6 m ) with two 90 - degree elbows. Less 5 feet for Clearances specifications specifications each additional elbow.The manufacturer's specified clearances are identified on the venting material. NOTE: clearance distances are variable depending if the vent pipe is installed in an enclosed or unenclosed space, the exhaust flue gas temperature and the orientation of the vent pipe. 6 720 606 601 7 Page: 8 Installing Flue collar Remove 4 screws from the top of the heater leaving the plate in place.

Use stainless steel ( AL29 - 4C ) or galvanized pipe of 26 minimum gauge must be used. Each connection must be properly sealed. Approved Vent Terminal ( FXHOOD or other approved terminal ) The FXHOOD is design approved with the Aquastar 125FX and has a built in back draft flapper to prevent negative air from freezing the Aquastar - see Fig. 5 for restrictions in location of vent terminal. Each connection must be properly sealed. 5 -,., ',,. Fig 4: Some Venting Guide Suggestions An approved side wall vent terminal must be used when the water heater is vented through a side wall. Locate in accordance with ANSI Z223. 1 and local applicable codes. See Fig 5 for restrictions in location of vent terminal in relation to opening doors and windows, grade, and forced air inlets. Be certain that snow and ice will not interfere with the vent. 8 6 720 606 601 Page: 9 The approved vent terminal must be installed so that flue gases will not jeopardize people, overheat combustible structures or enter into buildings, and so that proper clearances are maintained ( See Fig 5 ).Flex line NOTE: The AquaStar 125FX is supplied with a gas tubing is NOT recommended, but if used then oversize pressure regulator that must be installed on the heater it.See figure 6. Failure - It is strongly recommended that the LP Gas pipe be to install the gas regulator as shown in figure 6 will be a semi - rigid copper or Black Iron pipe from the outside violation of CSA certification of the unit. The regulator regulator to the inlet of the Aquastar regulator. It is an appliance feet distances.The PRESSURETAP drip leg must be accessible and not subject to freezing conditions. Install in accordance with the recommendations of the serving gas supplier. GAS LINE SIZING When your connections are made, check for gas leaks at all joints ( not just the ones you made ). Apply some soapy water to all gas fittings and gas valve.

Soap bubbles are a The pressure regulator provided with the heater is adjusted sign of a leak.If you have a leak, shut off the gas. After meters ) above sea level. On appliances being installed above verifying that required gaskets are in place, tighten 2000 ft ( 660 meters ) elevation, the inlet gas pressure should be set at installation to the value shown below.Turn the gas on and check again with a soapy solution. Never test for gas leaks using a match or flame. NOTE: The gas pressures specified below refer to pressures taken atthe pressure tap on the gas inlet pipe just above the regulator ( See Fig 6 ). These readings GAS PIPING, CONNECTIONS should be taken while the heater is operating at full input - i. e. maximum water flow with the temperature dial Before connecting the gas supply, check the rating plate on selector turned all the way clockwise.The greater the value of EHD, the greater the 37EHD 639 456 374 325 292 267 gas capacity of the tubing. Thegreaterthevalueof EHD, the greater the gas capacity of the tubing. Should a discharge line be added to the PRV no valve is to be placed between the PRV and the heater. No reducing coupling or other Install the heater centrally in the building if possible and restriction may be installed in the discharge line. The make hot water piping runs as short as possible When facing discharge line must be installed such that it allows complete the heater, the cold water inlet will be on the right and the drainage of both the PRV and the line. The location of the hot water outlet on the left.. PRV must be readily accessible for servicing or replacement Although water piping throughout your structure may be other and be mounted as close to the water heater as possible. See codes if more stringent ). Plastics or other PEX type plumbing Fig 8.If the cold and hot connections to the heater are reversed, the heater will not function. No pipe dope or thread tape is to be used at this joint.

Be certain there are no loose particles or dirt in the piping. 1 Blow out or flush the lines before connecting to the water PIPE PRV TO heater. WARNING: This heater must be electrically grounded in accordance with the most recent edition of the National Electrical Code, NFPA 70. In Canada, all electrical wiring to the heater should be in accordance with local codes and the Canadian Electrical Code, CSA C22. 1 Part 1. Do not rely on the gas or water piping to ground the metal parts of the heater. CAUTION: Label all wires prior to disconnection when servicing controls. Wiring error can cause improper and dangerous operation. Verify proper operation after servicing. Turn the hot water faucet on to the minimum flow required to activate the heater. The automatic ignition system first Before operating the heater, make sure that the system is ignites the safety pilot burner which then ignites the main filled with water.The power exhaust will then activate. Open the cold water inlet supply to the heater fully. 7. The pilot flame will extinguish 10 - 30 seconds after the burners come on. The burners will remain on until the hot Open a hot water faucet to permit the water to fill the heater and the piping and to eliminate the air trapped in the system water tap is turned off. Close the hot water faucet after the water flows freely and NOTE: On a first time installation, existence of air in the gas all the air has escaped from the system. The water heater is supply line and in the water line may cause some ignition now ready to operate. delay. In that case, repeatedly open and close the hot water FOR YOUR SAFETY READ BEFORE tap in order to restart the ignition process until all the air has been purged. When turning the heater on, follow these instructions exactly.Be sure to smell next to the floor front panel strip. Do not touch any electric switch; do not use any phone in your building. Immediately call your gas supplier from a neighbor's phone. Temperature Adjustment Knob C.

Decrease temperature Increases temperature Never use tools. Follow these instructions exactly. If control and increase flow and decreases flow button is jammed, close the gas supply and call a qualified service technician. Attempted forceful repair may result in a fire or explosion. L0 D. Do not use this appliance if any part has been under water. Immediately call a qualified service technician to Fig. 10 - Principles of Operation inspect the appliance and to replace any part of the control system and any gas control which has been under water. The AquaStar 125FX LP and 125FX NG water heaters have a gas control that modulates burner input in response to LIGHTING AND OPERATING INSTRUCTIONS flow. Its purpose is to ensure that the hot water temperature will remain steady, although the demand for water flow might 1. To adjust the temperature on the heater.If you smell gas, STOP. See Fig 11. This will produce a in the safety information above. Given that average incoming 3. This will result in a higher 5. Verify that the power supply to the appliance is turned flow rate, but at cooler temperatures. The position you select on the this heater should be serviced periodically. During the colder months, or in cold climate areas, o ring seal on the end of the right hand side water pipe it might be necessary to set the control all the way clockwise before re - installing. Lubricating the o ring with lithium or to the right for maximum temperature rise.Do not supply the AquaStar 125FX with preheated water. For this type of application, purchase a solar model 125 B Pilot Flame: The pilot flame should burn with a clean, sharp, LPS or 125 B NGS.The pilot flame should be found to be too hot. A temperature balance shower valve approximately 2 inches long, extending past the flame sensor. If the flame is too small, it will not reach the flame sensor can automatically mix in cold water to reduce such hot water and the burners will not come on.

Adjustments should be made to the burnertip and electrodetip hottest setting in the shower valve. Additionally the temperature control of the heater can be adjusted to produce a more comfortable hot water temperature. Remove the cover of the Fig. 11 - Temperature Adjustment Knob heater. To do so, pull off the temperature knob and unscrew and remove the temperature knob collar. Pull main cover out toward you and lift up and out. The pilot orifices should also be cleaned or replaced. Do not enlarge the orifice MAINTENANCE AND SERVICE ( see fig. 13 ). Do not use any wire or sharp object to clean orifices. Natural gas orifices are large enough that you can usually clean them by blowing through them. LP orifices, on REVIEW MAINTENANCE TABLE ON the other hand, are too small to clean and should be replaced. To access the pilot Approximately once a year, the AquaStar should be checked orifice, remove 2 screws holding pilot assembly in place.Unscrew the central screw located at the bottom of the front cover. THE FOLLOWING OPERATIONS SHOULD BE PERFORMED BY A QUALIFIED SERVICE PERSON: PILOT ORIFICE Vent System: Should be checked annually. Clean and repair as needed. Fig. 13 - Pilot burner with pilot orifice 6 720 606 601 15 Page: 16 Main Burner Flames: The main burner flames should be 6. Cross over in water lines blue, with a more intense blue cone in the center core. Yellow To confirm there is no cross - over in the plumbing, shut off flames could be a sign of wrong size gas orifices or dirty the cold water supply to the AquaStar water heater and burners, or a blockage on the heat exchangers fins. If some open a hot water faucet. There should not be any water burners have yellow flames while others have good flames, flowing at that faucet. Water running is a sign of a plumbing it is likely that dust, lint or spider webs have partially clogged cross - over. Consult your plumber.To clean the burners, contact a gas 7. Microswitch needs to be adjusted or replaced.

If may need to be replaced.The heating coils should be flushed with a descaling solution. Consult your dealer or service person. TROUBLE SHOOTING ( see maintenance table ) Introduction The AquaStar 125FX pilot and burners are ignited by a water flow valve. These water flow related Pilot does not spark with Pilot always sparks water flow without water flow problems can cause the heater to deriver less than its furl output, or to fail to ignite or to shut down completely. Close water tap 1 Close water tap Remove screw cap and 2 Screw in adjusting screw Problems are stated in upper case, bold face. Most common unscrew till sparking starts until it stops sparking causes for the problems follow in order of likelihood. The 3 Continue to screw in Screw in turning one and a suggested solutions require that the cover be taken off. To half turns turning one and a half do this, pull off the temperature knob and unscrew and turns more remove the temperature knob collar. Water valve parts may be dirty or components damaged plate on the front panel strip. See fig. 10. First check that venturi is free of dirt particles. Water valve and component parts must be totally free of dirt. 2. Bad electrical connections. Mineral deposits can eventually ( 3 - 5 years in hard water Be certain that all electrical connections are clean, tight, areas ) corrode the water valve parts to a point where they and free of any moisture.Any sign of moisture at the bleed hole is a sign that the water valve needs to be replaced 3. Water flow is not sufficient to activate heater.When temperature adjustment knob is turned 10. As a Ignition sparker will not operate if the electrical circuit is reference, this is a flow which would fill a quart jar in 30 interrupted. Check that the connections to the ECO are seconds. If the temperature adjustment knob is turned fully secure and tighten if necessary. Replace if necessary.Inadequate combustion air to the room area can also cause the unit to improperly vent.

Improper 5. Water inlet filter is clogged venting or insufficient combustion air must be corrected. Water flow is restricted, preventing flow needed to activate heater. Clean water inlet filter screen. Consult a licensed professional to inspect the installation. 16 6 720 606 601 Page: 17 SPARKS APPEAR AT PILOT WHEN HOT WATER TAP IS 4. The Control Box may need to be replaced ( see Fig. 9 ). TURNED ON, BUT PILOTAND BURNERS WILL NOTIGNITE Check wire connections and test operation of control box 1. Air in the Gas Line ( see Fig 9 ). Note: Normally this is a problem only at the time of initial installation, after the pipes have been worked on, or after a 5. Burner electrovalve switch may need to be replaced propane tank has been allowed to empty, or after the heater ( see Fig. 9 ). has been shut down for a long time. Bleed all the air trapped in the gas line by turning the hot MAIN BURNERS GO OUT DURING HOT WATER USE water faucet on and off until the air has been cleared from the line. 1. Deficient exhaustion of flue gases Check that vent is correct and clear of any obstructions, 2. No gas to the AquaStar that sensors for flue gases are secure and that electrical A. Gas cock on gas line may not be open connection has been made. If the heater will not come back B. Gas regulator may be shut or damaged. Replace or unlock on, it will be necessary to turn the electrical supply to the the regulator. Note: The regulator furnished with the heater heater off and then on again. Excessive pressure will lock it up. Locking usually 2. Flow rate diminished below activation rate happens when the gas pressure between the gas tank and Be certain that water flow is not less than required amount the water heater's gas regulator has not been properly to activate heater. regulated. See Page 2 for recommended correct gas pressure. To unlock a regulator, consult your gas supplier or 3. Unbalanced pressure in waterlines a gas technician.