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Re: HVAC Heat Shortcycling
20 year old furnace, have a technician with a good camera inspect that heat exchanger before you start throwing parts at it.
*A "9 flash code" on a Trane XE 80 furnace typically indicates an issue with the igniter, meaning you should check the igniter circuit for potential problems like a faulty igniter itself or a poor connection to the circuit board
Re: New Return Pipe Noise During Renovation
Water hammer is loud, some years ago when a neighbor's boiler was replaced and the contractor did not bother to skim it he thought someone was breaking into the house type loud.
" our main vent was shooting steam. Like crazy. "
Has the pressure been verified, pressuretrol working correctly, pigtail is clear and not plugged up ?
109A_5
Re: New Return Pipe Noise During Renovation
The tapping is the threaded hole where the pigtail threads into the cast iron boiler block. Occasionally they plug up too. The whole path from the inside of the boiler to the diaphragm (at the base ) of the pressuretrol needs to be clear. Otherwise the pressuretrol can't monitor the boiler pressure and shut the burner down when the 'Cut Out' pressure is reached (typically 1.5 PSI (1 PSI differential and 0.5 Cut In)).
109A_5
Re: New Return Pipe Noise During Renovation
Two pipe system, it there a bad radiator trap that is letting steam into the return ?
Are you going to insulate the steam mains, I would. Looks like the walls would block the heat from the living space anyway.
109A_5
Re: New Return Pipe Noise During Renovation
The steam and water vapor coning out of that vent is impressive, which makes me think the pressure is way too high and the vent may have failed since it should close with the presents of steam. Do you have any radiators closed off ?
109A_5
Re: How well is my heating working at lower water temps?
Hydro coils are hard to dial in. What I have found works is once you get your outdoor rest in the ballpark is try reducing the water flow rate through the coil. Up to a certain delta T, the heat output (ie supply air temp) does not change much but you get much lower return water temperature which is what matters for condensing efficiency.
Kaos
Re: How well is my heating working at lower water temps?
You might appreciate the "beestat" phone app. It can display the ecobee data in various ways, time to heat, estimates temp loss based on outdoor temp, etc. This all can be informative for fine tuning of those supply temps or outdoor resets curves.
bjohnhy
Re: HVAC Heat Shortcycling
Maybe this video will help you a bit, not the greatest IMO, but maybe better than nothing. Looks like his gas valve was failing but he never measured the voltage applied to it.
What does your flashing error code indicate ?
109A_5
Re: HVAC Heat Shortcycling
It sounds like a one hour lockout. There should be a code while the fan is blowing cold. Time to break out the thermometers and manometers.
HVACNUT
Re: HVAC Heat Shortcycling
My HVAC came he checked few things here and there and suggest to replace the heater
Another Salesman!
Find a different service provider.
Where are you located?
pecmsg