Question about Heating & Cooling
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Posted on Jan 02, 2017
It may be, Rinnai suggests a maximum length of about 13 equivalent feet of venting including elbows. Add 6 feet for every 90 degree elbow. If the vent is longer than this it is taxing the combustion fan motor and it will start giving you error codes and will not ignite. Remove the trim panel from behind the heater and find the flexable air intake pipe. Temporally remove it from a fitting and test the unit a few times to see if the unit starts quieter. This procedure will be taking room air into the heater for combustion and circumventing the direct vent feature of the heater, not a fix. Have you had the gas pressure tested? It gould be that! You may wish to consider relocating the heater and fire your installation contractor for putting you in this predicament, not Rinnai.
Posted on Nov 05, 2009
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SOURCE: Loud Knocking
If the noise is not coming from the fan as Buffalo suggests, it is most likely the expansion and contraction of the heat exchanger. The old school way to lessen the noise of expansion is to bank the combustion chamber with a hammer. I don't recommend it today because the metal is so thin (thus all the noise) and you may damage it. You will get used to it and the noise may soften the more it is used. You will never get it to stop.
Posted on Dec 04, 2007
Most base board heaters installation instructions say to attach to the wall with screws which are slack ( not fully tightened) in order to allow the heater case to expand and contract otherwise you get a clicking noise
Posted on Oct 31, 2008
The heating system has a number of burners which must ignite as soon as the heater starts. When one or more burners does not fully or partially start properly, unburnt gas fed to that burner accumulates in a small pocket until is is eventually ignited causing a small explosion. This condition is caused by restricted/blocked burner jets. The gas jets are small and easily fouled by spider nests or other items sucked into the system. You will need to have the heater serviced by a qualified gas plumber.
Posted on Jun 20, 2009
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