Best Of
Re: Leaking new vents?
Yes your boiler is rated for 391sqft but that is to be compared directly to your standing radiation, not the radiators + piping. The boiler rating already accounts for the piping estimate. So you are almost 50% oversized with all your radiators open. In my opinion you would be better off with slowing some of the radiators down getting a little more length out of a cycle to give the house a chance to heat up before all the radiators are filled and you start cycling on pressure.
Re: National 209 series gas boiler - pilot light went out.
Does the Gas company replace Thermocouples ? As mattmia2 stated, I also would check (replace) that first. They are inexpensive compared to most everything else.
Re: National 209 series gas boiler - pilot light went out.
Yeah ??? My guess is the regulator is the 'A' valve, so that makes the Gas Valve the 'B' valve. Maybe official Gas company lingo.
Re: National 209 series gas boiler - pilot light went out.
Did they check the thermocouple? Does it light if you follow the lighting instructions? The valve and regulator could be replaced with a combination valve by a competent tech if needed but it sounds like the basic troubleshooting wasn't done.
Re: Leaking new vents?
I see several problems here. You don't need any "minimum pressure" to close vents. They operate strictly on temperature.
Your boiler is cycling on and off rapidly on pressure nearly all the time. If the radiators are full of steam to their ends, your boiler is terribly oversized.
Between the atrocious piping of the boiler and its oversizing, you are dealing with a very high steam velocity into the radiators. This is exacerbated by using very fast (large) vents. This negates condensate drainage and causes wet steam to reach the vents. This wet steam makes the venting noisy. Wet steam also cools the vent's bi-metal element preventing it from closing tightly.
Putting a slower vent on the larger radiator along with increasing main venting may help quiet your system. Substituting a bi-metal vent (MoM or Gorton) with a sylphon vent (Hoffman or Vent-rite) could possibily help too. They tend to close at lower temperatures and/or not open as quickly.
I'm afraid, though, that such oversizing and mis-piping this boiler will have these symptoms.
Re: HVAC Heat Shortcycling
Thats a problem between you and the contractor. I would put it on a CC then dispute the charge!
Call and complain.
Sounds like one of the low special contractors that just want to get a foot in the door to sell.
pecmsg
Re: HVAC Heat Shortcycling
Have you changed your air filter and ensure that all supply registers and dampers are open . Had the same thing happen to a friend recently another company suggested to replace the furnace because it was old 11years old installed by them . Ended up his filter which they said was clean was packed replaced it and all was good higher end aprilaire electronic air cleaner of course w the wires broken and filter packed again installed and serviced by them for 10 years never changed filter never clean condenser service agreement lol . They also stated that the unit must be leaking because of water marks near the burner it was really the fact they never insulated the suction line which for 10 years of them servicing every service guy was to lazy to put a piece of insulation on the suction line total hacks ,They have been suggesting replacement when the unit hit 11 years old gotta keep the revenue coming in i guess also when they installed they never did a chimney liner i had alert my friend of it and he blew it off for a few years until his chimney was falling apart and i reminded him and he had it lined .They where so good and trained as they state in every ad they run w nate trained employees (lol money grab bs er) that they wired the eac straight up powered all the time after it was first put in i walked in the door and could smell the ozone it produces alert him of the issue being his wife and daughter have respiratory issues . I took a closer look and saw that it was wired directly not to the provided eac terminals on the furnace. The bonus was that being it was total there mistake they wiped out a few grand that he owned them being they realized they where in a legal pickle for the neglect especially since the eac had a huge orange label on it stating that it produced ozone and should only be powered when the blower is operating , This was and is a large franchise company advertising everywhere pretty much in a lot of states and all i could say was yeah i work for myself instead of working for money hungry idiots . And another note there prices for a cold call service call are way to cheap for a real service men but it's about right for a salemens, also they always offer service maintenance contracts most are all bull and most of the time they do absolutely zip. I surely know your noy getting me out bed for 79 to 119 bucks all you would hear is a ring tone my time is worth more then that . You most likely would be in the same boat w public utilities worry free what me worry quote alfred e newman
peace and good luck clammy
clammy
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



