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Yes - previous was removed. Valid point on upslope side of stack - little or no stains showing there. As far as snow - just got it a few days ago and little to none last winter - 10 inches total...

The previous photo was actually the old chimney - these pictures show the replacement. I'd agree with the flashing explanation if the stained area was confined to area down to roofline. It extends...

Thanks for the replies. Attached is a close up photo. I'll try to get some from further back today when I get home. The boiler is three year old Weil Mclain with Beckett burner. They did a tune...

I had a new roof installed on my house several years ago and the Class A chimney for the boiler was replaced shortly thereafter since it was not up to code (too short and inadequate clearance to...

That makes a lot of sense. Is there a particular model dehumidistat I should suggest they install? I actually raised the question after seeing the air handler documentation during install but got...

Good info -thanks again. Regarding the de-humid function: Would it be worth my while to look into a different thermostat that could provide both the overcooling de-humid operation as well as the...

OK will have them make those changes. How about the air handler jumper installed from R to O based on that same diagram - remove it?
And lastly when when they do get to finally test out cooling...

I questioned that change since there is no external humidistat as the function is inside the 803 stat. But the installer received the attached two page guide from Trane rep showing BK-R removal. ...

So before they come back to charge the AC part of the system could someone look at these connections for the cooling side to see if correct: (the Trane documentation is not consistent between the...

They got system up and running yesterday - heat only since to cold outside to charge AC. There's quite a long delay between call for heat and blower start - maybe a minute plus. And then seems to...

Guess I should have checked here earlier since the unit is being fired up today. Are there any other downsides to using a communicating air handler when the stat and condenser unit aren't? Looks...

Don't see a lot of heat pumps being applied in this area (New England - West MA). Oil is at all time here but so is power which is why I'm finally retiring baseboard electric. The flexibility of...

I see the advantage of the extra cooling stage from an efficiency standpoint but does the same apply with heating? Or would it just allow a quicker recovery for large differential on stat. Not sure...

Thanks - it looks like a third party heating coil. I assume this will be a single stage heating setup but what determines the air handler speed in heating mode?

My 30 y/o central air system is being replaced this week with the folowing:
4TEE3C04A1000A Air Handler
4TTX60036 xl16i Condenser
TCONT803A Thermostat
Aquecoil hydrocoil for heat (new zone off...

Sorry about recycling the old thread and thanks for all the other comments. Could the problem be related to the damper itself since it also slams open and closed on shutdown - no odors seem to be...

I have a new Weil McLain boiler that seems to be doing almost the same thing mentioned by the OP here. There is a 12-15 sec delay after heat call before ignition, thump or soft bang when it finally...