Best Of
Re: Your thoughts and opinions please
Wow That looks pretty comprehensive. Are you going to be able to squeeze all that into one hour each? You man need to look at some of the importance of each item and be prepared to glaze over some of them as you watch the clock in order to cover the important points.
When I did my one day seminars on Hydronics, I had a 4 minute blurb on steam boilers where I used one power point slide to touch on important basics, then told the mechanics in the class to put their hands in their pockets and step back and call someone that knows about steam.
I also stopped my presentation in the middle of discussing safety devices like high limits, flame safety controls, and relief valves. I had three slides to go over the importance of "Operating" the relief valve. I had a blow up of the yellow tor green tag that is usually torn off, that states: "YOU MUST OPERATE THE RELIEF VALVE ANNUALLY" and highlighted those words and zoomed in on them. Dan H taught me that one. Then I asked about what does a maintenance visit include?, and why the mechanics don't operate PR valves as part of the maintenance? If the valve fails, you have a sale for a new valve if you present it properly, and doesn't your boss like it when you sell stuff over and above the loss leader maintenance price? Aren’t we in the business to replace defective parts?
Re: Triangle tube ignition upgrade kit
Call (877)574-5036 to find out if your boiler falls under the recall. Like Mr. Gross said, they will send you the parts for free.
Re: R7284B (Oil primary) Setup
So your system is connected to ductwork. Then you most likely have a newer furnace that utilizes a ST9103 fan timer. That is the control that you connect the thermostat wires to. In that case there are several different ways the primary control may be connected depending on the manufacturer's wiring design. Some use the ST9103 to call for heat on the R7284U with two wires from the 9 PIN plug in connector to T T on the R7284U. Others may not use that design. The bottom line is to look at the R7284U and see if there are any wires connected to T T that go to the ST9103.
If there are no wires connected to T T on your Primary control then NO is correct. If there are wires connected to the T T on your primary control then YES should be set for T T. see the illustration
Now there is an exception to this. If the ST9103 has a defective switch circuit that fails to make the call for heat from the thermostat, transfer to the 9 PIN connector, the you might need to have the ST9103 fan timer replaced. As a money saving adjustment, I have made the change from T T = YES to T T = NO as long as all the other safety functions of the ST9103 fan timer are operational. You would need a professional technician that is familiar with the proper safety circuits that include the high limit and flame failure safe guard.
Re: Piped wrong
This looks like the installer of that boiler just copied the piping arrangement of the old coal boiler that was removed. Left riser to one main and the Right riser to the other main. And that may actually work for many years. I guessing without the equalizer, there is a check valve on the wet return somewhere.
But since you posted this in Chimneys and Flues, the first thing I looked at was the water heater and the gas boiler venting connection to the chimney. That looks fine too.
So they want a price for an replacement boiler without allowing you to calculate the radiation EDR? I would answer that TEXT with " A lot " but that could change when I do some calculations after the onsite inspection. Then it could change to "Reasonable". Let me know how you want me to proceed.
Re: Delay of boiler firing?
I'm sitting on almost 8,000 gallons of oil in totes right now. I can get 3000-4000 gallons a year easily.
nate379
Re: QO Breaker Lock in Clip
What's the reason for the large enclosure to house a standard metal box for your generator receptacle?
I used a small downfacing outdoor receptacle made for it that has a little spring loaded flap that covers it when not in use. It's a 50A 3 prong + ground.
ChrisJ
Re: QO Breaker Lock in Clip
It doesn't need to be water proof. It's not going under water.
It just needs to shed water like a roof. Even fairly hard wind driven rain isn't going to climb vertically up that plug.
ChrisJ
Re: Am I crazy? Chimney company says you can reduce the flu.
These guys are on top of it. I would add to spec. a smoothwall ss liner so you do not have to de-rate it 20% for corrugated. Once done, perform combustion analysis to ensure proper function. If you get it fired up to 'steady state', whatever that means, take a draft pressure reading then shut off the gas quickly. If the draft rises stronger, the liner is undersized.
Make sure they put arrows on those passive MUA grilles so the air knows which way to go. Air is dumb and will observe pressure gradients. For instance, operating an open hearth fireplace could backdraft a borderline boiler.
Most fireplaces were built with undersized flues. To reline one, you need to remove the flue tile then install the properly sized insulated liner for a 2,100F rated installation. You are not required to insulate heater flues but consider whether its a cold exterior chimney vs. warm interior one. FYI, the sizing tables in the code are for interior chimneys only.
