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Water Heaters (Calefones)

Longvie CB-214 14L heater lights burners and does not heat water

jorgeadrian2015
hace 6 años
hace 6 años
Good! I have a problem with an instant heater Longvie cb-214 of 14L. It turns out that it is installed in an apartment on the ground floor, the water enters with a lot of pressure per pump . It was working correctly for 7 years. I don't know if they have changed the water pump or what, but I had the following problem: When you open the water, light the burners correctly but it fails to heat the water. When verifying, I realize that there is too much water coming out, more than the water heater reaches to heat (14 liters per minute) therefore, I try to close the stopcock until leaving the corresponding flow, but there it does not light the burners. A plumber / gasist was called and the serpentine was cleaned with acid and a complete water chamber was changed (in this model it is not possible to replace the diaphragm alone, the entire chamber must be changed). It doesn't work either. We called the official Longvie service and they told us that a lot of water passes, more than the water heater can heat, he told us that the water heater must be replaced by a hot water tank since the pressure and inlet flow is very high. My question is the following, if I close the stopcock, I do not reduce the flow to the corresponding one? These water heaters understand that they fail with low pressure but here is the opposite. The flame looks blue perfectly, and increasing the power subtly increases the flame. Before discarding it, I decided to reach out and disassemble the burners, I cleaned them with pressurized air, brush, it doesn't look dirty. The problem persists.
servimat1
servimat1
138.835
hace 6 años
hace 6 años
Hi. There is no problem that you limit the entry of water, it is normal in these cases. Do it and comment the results. Regards
jorgeadrian2015
hace 6 años

Hello dear! That is already done, but when the stopcock is reduced, to have the corresponding flow, the flame goes out. Not enough to turn on, understand?

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servimat1
servimat1
138.835
hace 6 años

Does the ventury have regulation?

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jorgeadrian2015
hace 6 años

No type of regulation.

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mariotti luis marcos
hace 6 años
hace 6 años
hello: to reduce the flow you have to turn on the water heater by opening the faucet that is closer starts to gradually close the stopcock observing that the water stream shrinks but without turning off the water heater and you are testing the temperature keep in mind that It is not immediately the change you have to wait a few minutes and you will be noticing the temperature difference, it should be possible to improve if you do not check the condition of the serpentine that heals the shirt and that the radiator fins are fine any doubt comment greetings
jorgeadrian2015
hace 6 años

Hi Luis! After cleaning all gas and water pipes, I also passed air under pressure from below to the radiator, it looks somewhat rusty but I don't know if it will affect. The serpentine looks good on the outside at least. Then I assembled and regulated the stopcock very precisely to close it as much as possible without lowering the flame. I managed to keep the water warm at least. What caught my attention, the Venturi was somewhat broken inside. It's all plastic, and inside it had a cone type filter. I didn't find any spring or drive inside. I don't know how it is inside, should I change it? Would it improve? Thank you!

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mariotti luis marcos
hace 6 años

hello: the venturi is the one that makes the pressure difference to actuate the diaphragm and this actuates the gas valve it is important that it is in good condition if you saw it split you should change it it may not be opening the gas passage in its entirety notice the radiator that the fins are well straight if the fault persists you should measure the gas pressure

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jorgeadrian2015
hace 6 años

Luis, I bought the replacement of the complete venturi, when I am going to replace it, I realize that the old man, not only was damaged in the cone above, but also LACKED ONE PIECE! This model brings a bronze connector with a nut that has a spring inside, that comes in the spare part but it turns out that the heater was not in place. There was the green plastic piece alone! It is seen that people have gone hand in hand without knowledge or care.
Conclusion: by changing that, and cleaning everything works perfectly! Thank you very much Luis. A hug from Mendoza.

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mariotti luis marcos
hace 6 años

hello: I'm glad to know that you could fix it thanks to you for sharing the solution greetings from miramar bs as

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