Low rumble and fog horn sound install#
Low rumble and fog horn sound manual#
Low rumble and fog horn sound free#

Hearing a rumbling sound in your ear is often a protective mechanism by your body. A protective mechanism to avoid ear damage

Low rumble and fog horn sound manual#

These advanced instructions are not in the manual but works on other high performance Ultra low NOx products as well.A rumbling sound in the ear can sound like rushing water or wind blowing into the ear.

Low rumble and fog horn sound free#

These units must have a combustion test performed to dial them in correctly as the manual states for trouble free long life that needs no service. If there is still some sound, start over on low fire and increase the suggested setting richer till it vanishes. For example: Low fire 9%, high fire 9.2%. Take it to high fire and set the throttle screw to. Use the left button to take it to low fire and adjust the offset to achieve CO² 8.5% to 9%. Press and hold the top two buttons for 5 seconds until it enters service mode. To get the gas valve adjusted just right, first set it to low fire. This has a strong fan for long distance venting. The fan speed can also be turned down in the program but don't turn it down for the noise. An experienced technician can adjust this to run perfectly and not have any sound. It can be corrected with an offset adjustment on the gas valve. these are vary nice stainless steel machines. I can answer this for those that experience this with the HTP PH-LD. Here's an example from a particularly designed car exhaust:Īlternatively, your best bet might be to run 2' PVC all the way out of the house - if my physics classes taught me anything, that transition from 2' to 3' might be acting as a resonance chamber some very high end tuned exhaust systems do this on purpose to set up resonance in the exhaust to suck air out of the engine just before the exhaust valves close. The perforations and glass pack will absorb sound, like a silencer for a gun: It seems a few people have have had this idea - this guy made one by taking a 2' pipe, perforating it, wrapping fiberglass around it, and then surrounding it with a 4' pipe. This will damp out resonance in the air stream by buffering the air stream.

Low rumble and fog horn sound install#

This is an incomplete idea, and I'm not sure whether or not it will violate code, but you can take a page from automotive engineering and install a muffler on the end of the pipe. So after installing 3inch pvc pipe the whole way from the water heater to the concentric vent and still being puzzled at the hum the contractor started going back over everything and after adjusting the combustion mix it appears the hum was caused by too lean a mix. Also the hvac guy that put it in has three ninety degree angles in the 2inch pipe before it goes into the 3inch which then goes straight outside. Based on the noise and feeling the vent pipe I think the standing wave is caused by the fan beating the air and there is minimal vibration on the vent itself. The manufacturer said they haven't heard of this. Further info: The fan is built into the water heater unit and as it is new and is controlled by the water heater cpu and I don't want to void the warranty messing with the fan is out. Has anyone come across this or have a solution? Total length of pipe isn't really an option as we can't move the water heater position though the length of where the smaller pvc pipe from the water heater exhaust joins into the 3' may be. I am fairly certain the issue is to do with some kind of natural harmonic happening in the exhaust vent and this is reinforced in that if you momentarily cup your hand over the vent exhaust (blocking the air flow) the hum stops and it goes back to the quiet expected noise for maybe 10-20 seconds, sometimes longer, depending on what the fan is doing then. It's low frequency and loud enough to annoy us in our bedroom on the second floor and most likely our neighbor. This noise is nothing like the fan noise close to the water heater. The issue is as the exhaust fan gets up to higher speed a loud hum starts in the vent that sounds a bit like a (albeit quiet) fog horn. The contractor that put it in used part of the existing 3' concentric vent from the furnace we removed used. I just had a new power vented water heater installed (HTProducts Phoenix Light Duty) in our crawlspace.