Bosch Appliances 2400E NG manual Low water flow/pressure, Hot water temperature fluctuates at tap

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Troubleshooting

7.Cold water is mixing into the hot water lines (plumbing crossover). A plumbing crossover can unintentionally mix cold water with the hot water leaving the heater. The end result is a cooler water temperature than desired. To check for a plumbing crossover, shut off the cold water supply feed to the water heater. Then open all of the hot water taps served by the heater. Wait 10 minutes and check all taps for water flow. There should be no water flowing. Any continuous flow of water, small or large, indicates a crossover and must be corrected. Failing single lever faucets and mixing valves are common causes of plumbing crossovers.

8.Ensure that both temperature sensors are making contact and firmly mounted on their respective cold and hot water pipes. The hot water sensor should be located on the horizontal section of the hot water pipe before it exits the heater. The cold water sensor is located on the first horizontal section of pipe as the water comes into the heater.

6.5Low water flow/pressure

1.Too many hot water applications are being used simultaneously or too much flow is demanded. The water heater will effectively support two 2.0-2.5 GPM shower heads simultaneously or multiple sink applications. Greater draws will result in a water pressure drop and reduced flow at taps.

2.Ensure that gas pressure is in accordance with specifications in chapter 3.8. A gas pressure reading is needed to proceed further. Contact your original installer or a local certified gas technician to obtain this reading. If gas pressure is inadequate, the water heater will close its motorized water valve, reducing the hot water flow rate in an attempt to reach the selected output temperature.

3.If selected temperature on the unit is set too high for the demanded flow rate, the water heater will close its motorized water valve, reducing the hot water flow rate in an attempt to reach the selected output temperature. Lowering the selected temperature will allow the motorized water valve to open up for increased water flow rate.

4.Clean inlet filter screen per chapter 5.1.

5.Inspect the water path for obstructions. Make sure all showerheads, faucet aerators and whole house filters are clear of debris.

6.6Hot water temperature fluctuates at tap

Note: Temperature fluctuations from hot to cold during use are typically caused by a restriction in the hot water flow from the tankless heater. This slows the flow within the tankless heater, decreasing it below the activation flow rate, which shuts off the burners. The end result is nothing but cold water coming out of the outlet. Follow

each step below before proceeding to the next. After each step, test the hot water flow to see if it remains constant without turning cold.

1.Check for restrictions in plumbing outlets, which could limit hot water flow and may contribute to heater deactivation. For sinks, remove faucet aerator. Flush and clean screen and reinstall. For showers, remove showerhead and flush. If plugged with min- eral deposits, clean according to manufacturer’s sug- gestions or replace shower head. (If showerhead is wand style/hand held, corrugated tube connecting to head may be too restrictive. Use a larger tube or replace with a normal showerhead.)

2.Clean inlet filter screen per chapter 5.2.

3.Check for a plumbing crossover by closing the installer supplied cold water shut off valve (if none installed, install before proceeding) and opening all hot water taps supplied by the heater. Wait 5 minutes and check all taps. The water flow should come to a complete stop at every tap. Any water running, even a trickle, is a sign of a plumbing crossover. Consult a local plumber or service person for help. This condition must be corrected before the heater can operate properly.

4.Confirm water pressure is adequate and constant.. Water pressure must stay above 30psi during heater operation. For installation on a private well system with the use of a pressure tank, the lowest pressure range setting recommended is 30-50 psi (2.07-3.45 bar). The use of a pressure reducing/regulating valve directly after the pressure tank is an effective way to maintain constant water pressure to the water heater. Watts brand 25AUB-¾” or N35B-¾” pressure reducing/regulating valves or equivalent is suggested.

5.Heater deactivated by temperature balancing valves. If the outlet water temperature is set too high, the heater can produce temperatures that are too hot. A temperature balance shower valve will automatically mix in cold water to reduce such hot water tempera- ture. In the event of any temperature instability at a fix- ture using a temperature balancing valve, refer to the valve manufacturer for instructions on internal adjust- ment setting. An adjustment should be made to min- imize the amount of cold water the valve is adding. Additionally, the temperature setting on the heater can be lowered to prevent the temperature balance valve from mixing in too much cold.

6.7Noisy burner/heater during operation

1.Sealed combustion leak. Make sure cover is securely fastened. Ensure the exhaust vent adaptor is properly sealed with supplied gasket. Leaky seals create improper combustion resulting in noise.

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Contents Intended for variable flow applications NG Natural Gas LP Liquefied Petroleum LP GasWhat to do if you smell gas Index For your safetyIndex FCC 2400 E Specifications Technical data FeaturesAppliance details Unpacking the 2400 E heater General rules to follow for safe operation VentingDimensions and Minimum installation clearances DimensionsHeater placement and clearances Installation instructionsProper location for installing your heater Mounting installationSingle pipe method Combustion air requirementsTwin pipe method Installation instructions Vent lengths Vent material and specificationsVenting Minimum exhaust vent size and lengthVent connections Exhaust vent connection Vent Safety SystemCombustion air inlet connection External condensate drain installation not supplied Room sealed installation Twin pipeVent terminations Vertical terminationsHorizontal runs Interior masonry chimneysExterior masonry chimneys Horizontal terminationsInstallation instructions Description Minimum distance 720 608 Gas piping & connections For Natural GAS Static Pressure Test Connecting ManometerMeasuring gas pressure Operating Pressure TestWater connections HotcoldElectrical connections Recirculation applicationOperation instructions For your safety, read before oper- ating your water heaterPower Operation instructionsTemperature selection Operation instructions OffOperation instructions Setting the water temperature Flow/temperature chartOperation Use of optional remote control accessoryReset button Program buttonAnnual maintenance Maintenance and serviceWinterizing for seasonal use Mineral scale build-up Adjusting CO2Descaling using a pump Once Gas Pressure is adequateMeasuring CO2 Cover Installed Adjusting CO2 cover removedReturning to Service Final ReadingsControl board diagnostics Diagnostic menuWater is too hot TroubleshootingTroubleshooting Water is not hot enoughLow water flow/pressure Hot water temperature fluctuates at tapNoisy burner/heater during operation Lack of gas pressure. Inadequate gas pressure will Error code diagnostics Display Cause SolutionMeet desired temperature Troubleshooting Display Cause Solution Check red wire connections at hot waterNo flame ionization detected with water Heat exchanger Flame ionization rod or control unit may be Electrical diagram Electrical diagramFunctional scheme Functional schemeInterior components diagram and parts list Interior components diagram and parts listInterior components Components diagram Components DiagramParts list Description ReferencePacking Protecting the environmentProtecting the environment ComponentsTwelve Year Limited Warranty BBT North America

2400E NG, 2400E LP specifications

Bosch Appliances has long been synonymous with quality and innovation in the kitchen appliance sector. Among their impressive lineup, the Bosch 2400E LP (Liquid Propane) and 2400E NG (Natural Gas) models stand out as prime examples of the brand’s commitment to performance and functionality.

Both the 2400E LP and 2400E NG are designed with user convenience and culinary excellence in mind. One of the most notable features of these appliances is their exceptional heat distribution, which ensures that food cooks evenly. This is particularly beneficial for grilling, where inconsistent heat can lead to unevenly cooked meals. The burners are crafted to provide high-efficiency performance while consuming less fuel, making them an economical choice for both home cooks and culinary enthusiasts.

Each model boasts a sleek, modern design that can seamlessly integrate into various kitchen styles. The stainless steel construction not only enhances aesthetics but also increases durability, ensuring the appliance can withstand the rigors of daily use while maintaining its appearance. The 2400E series also features a compact size, making it suitable for kitchens of all dimensions, including those with space constraints.

In addition to design and performance, safety features are a priority for Bosch. The 2400E models come equipped with sturdy flame control knobs, allowing users to adjust heat settings with precision, reducing the risk of accidental flare-ups. Moreover, the integrated ignition system is designed for reliability, ensuring that starting the unit is hassle-free.

Versatility is another hallmark of the Bosch 2400E LP and NG models. These appliances are compatible with a range of cooking accessories, from griddles to rotisserie attachments, providing multiple cooking methods to satisfy diverse culinary endeavors. The grease management system is another highlight, simplifying cleanup and maintenance after cooking sessions.

Another innovative technology in the Bosch 2400E series is the Smart Grilling feature, which includes temperature sensors that provide real-time feedback. This allows users to monitor cooking progress effortlessly, enhancing the overall cooking experience. The models also include a robust warranty, ensuring peace of mind for consumers.

In conclusion, Bosch Appliances’ 2400E LP and NG models represent a fine balance of innovation, safety, and style. With their powerful cooking capabilities, thoughtful design features, and user-friendly technologies, they stand as excellent choices for anyone looking to elevate their cooking experience.
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