Question about Bosch AquaStar 2400ES-NG
sounds like the inlet water screen needs to be cleaned or the unit is scaled up with minerals. see attached link to manual
Posted on Apr 20, 2013
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Posted on Jan 02, 2017
The vent pipe you use is the correct size for the heater.Longer runs require bigger pipe.I also would check to see if the water is getting to hot.
Posted on Mar 16, 2009
Bosch has had problems with these heaters for sure. They are the best known thing out there in the market.They are mostly responsible for the bad rap being given to all tankless heaters, but a big part of the problem is installation. They are being sold to homeowners at box stores as DIY kits. These are not units to be homeowner installed, venting and fuel requirements are different from regular heaters and they will not function correctly if improperly installed. I have installed several of the Rannai units over the past few years without any issue whatsoever.
Posted on Mar 16, 2009
What is your reason to have a recirc line on your water heater does the heater sit to far away from a certain fixture? If you put a pump on your tankless waterheater then your heater will continually fire till the call for hot water is stopped. Yes you normally do need a seperate line installed for a recirc line usually from the water heater to the farthest fixture away. If your problem is taking to long to get hot water then I suggest installing a second heater closer to problem area.
Posted on May 25, 2009
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