Best Of
Re: Cost to clean a heat exchanger?
The tech put his probe in the wrong place, which means he has no clue how to use a combustion analyzer. What was the flue temperature?
If the boiler is sooted you will find soot on the floor below the drafthood and in the drafthood.
Just because it is producing CO doesn't mean it has soot. I have measured many pieces of equipment with CO over 1000 ppm and there was no soot,
What part of Ohio
Re: Cost to clean a heat exchanger?
They don't make a more simple boiler. That's an open draft hood, so I hope the tech got the probe up over the top of the block. With those numbers, it seems the techs sampling was diluted. Atmospheric oxygen at sea level is about 21%, so getting 16.58% during a combustion test means the tech didn't stick the probe where it needs to be stuck.
@Evan0307 , did you see for yourself the dirty flue passages in the boiler? Dollars to donuts its clean as a whistle.
HVACNUT
Re: Warren Webster 02H thermostatic radiator traps
I was able to find the correct capsule right from Tunstalls website.
Re: Oil furnace rumble and smoke
This really isn't something you want to try on your own. You need an experienced technician with the proper test equipment. This may not be an easy fix. Even if it is the burner needs to be properly calibrated or your issues will just get bigger and more expensive.
CTETeach
Re: TT Excellence DHW Tank Replacement
I won’t be doing this again anytime soon. It was not fun.
Re: F&T oddity
Collum of water 28" tall is 1 psi. So, if you had to lift the condensate 1 foot you would need the steam pressure to be .42psi" higher than the return pressure (if any).
In reality you need a little more to open the check valve and overcome any trap resistance which is minor.
Re: Small baseboard zones
I have never found any info on why 20 is used, @DanHolohan might know.
Most agree it is to make the math simple as you indicated.
Much of the rest of the world heats with panel rads, they tend to use 25- 40 ∆ in their design. Wider ∆ allows small 11 mm tube, for example, to be used for S&R piping
hot_rod
Re: TT Excellence DHW Tank Replacement
The hardest part was making the boiler water connections. The old tank nipples had thick walls at the nipple ends which were a nice shelf for the fiber washers to sit secure, but the new connection points didn't have that thickened end and the washers would slip into the pipe as you tightened the nut.
A properly sized brass friction ring would have kept the washer in place, but we eventually hit on some thick Viessmann washers that worked well. I know now why I never throw unused washers away.
Re: I get all the weird ones...
I second Harvey suggestion. Walk away. This sounds like a no win situation.
kcopp