"HVAC fella" wrote in message
...
'Dave, a "mechanical damper" you say, Who makes them and why are they
not standard equipment? Or a factory option?
So if the Mechanical damper fails what keeps Co from pouring
into the house and killing you?? . Are they Code anywhere?
Now a motor driven damper with a saftey shut off I have on a
boiler. But mechanical with no saftey?
Sounds like unsafe BS Dave.


Rans,

Theyve been around for many decades. They are installed on millions of
water heaters and older furnaces, and, i dont know of one village that
doesnt allow them. No B.S. Rans....check it out if youre not familiar
with it.

He knows nothing about it and neither do you.

'If you want your water heater running at its efficency rating and want
more , insulate it, instal a thermal brake on the water input and
output, flush it and be sure burners are burning correctly.'

ME: Agree.

You just ain't gotta clue...

Read this:
http://forums.invision.net/Thread.cf..._ID=24107&mc=3