Hum from Basement Oil Tank

cremfe

We had a 275 gal. Roth tank installed in the basement 2 years ago.  There is a hum that comes from the tank when the burner is running.  It's sometimes quiet and sometimes not. Lines are against the wall and secure. I've been told the fuel pump is setting up a vibration that shows up as a resonance, at the open suction pipe in the tank.  I have installed an anti-hum device in the suction line close at the burner, but really didn't help.  The single stage Sundstrand pump in this 2 pipe system IS   40 years old.  If I replace the pump with new, what are the chances that the new one won't also do the same ?    Any other ideas ? Thks.

Gordo

2 pipe fuel oil system

It might be a good idea to convert that 2-pipe fuel system to a one-pipe system.  Most likely you'll have less problems all around with a one-pipe.



Even if this doesn't solve your noise problem, it's still a good thing to do.

EddieG

I agree

Change to one pipe system, nothing but pluses! How about filter and pump strainer? Vacuum reading? Last time serviced?

Charlie from wmass

I do not install Rothe tanks.

I start with that disclaimer. I thought they had to be piped 2 pipe as you come off the top of the tank. I am thinking the tank being a poly tank in a metal tank that allows for a lot of resonance. I like the idea of the Rothe tanks I am just noting some possible sources for the noise. a 40 year old pump can has a good amount of wear on it. A new pump is a start. Unless a new boiler is on the horizon.

TJ_5

Roth Install Manual

Here is a copy of the Roth Install Manual, it indicates as stated above that 2 pipe oil lines should be used.

TJ_5

PDF will not load

I cannot get my PDF to load, but if you email me I will send it to you or you can go to

http://www.roth-usa.com  and get it there too

Jim Hankinson

Tank hum

Per Roth's instructions the oil line should be either 2-pipe or 1-pipe with an oil de-aerator such as Tiger Loop. 2-pipe systems are rather notorious for causing hum especially when run overhead and secured to floor joists.

Matthew Grallert

one line

One line from tank to Tigerloop Ultra at boiler.  This set up works really well for us and there will be no noise.  The reason is the flexable fuel lines breaking the pump noise frome the copper fuel lines.

cremfe

Tank Hum Advice Follow Up

Yes, filter and strainer are new. First, I may do the pump next Spring.  Thks for input.