Best Of
Re: Bradford White temp
I agree that 140° is HOT. I guess you mean that the "rest of the world doesn't" other than me you and your father
Re: Replacing Electrodes on Beckett AFG Oil Burner
Sid's isn't open to the public. And I commend them for it.
HVACNUT
Re: NFB 175H Thermostat
That depends on the leverage you have. Is the job paid in full?
The outdoor reset feature of your boiler must be disabled in order for zone 3 to make enough temperature to heat the tank for DHW. If that was piped and wired in accordance with the manufacturers specifications, the lower temperature operation would save you on fuel usage for the life of the appliance, while the DHW zone would override the lower temperature for the DHW priority, and then the lower temperature would be restored to make space heating zones operate at a loser cost.
If you have no leverage and you get pushback from the installer, contact the manufacturer and ask them if the instanned can be persuaded to resolve the problem. And there is always social media that can help. Ask me how I know this.
Edit:
As @109A_5 has indicated, you can set the system for the energy saving features but they may not work if there is no outdoor temperature sensor connected. Ask the contractor to connect the outdoor sensor so you can use the energy saving features the are listed in the manual. If they do not comply then ask for a refund for the inability to ues those features. If they are difficult, then start a social media campaign. I got results for a problem I had with handicap accommodations I booked 7 months in advance and with my less than 500 facebook friends, I got the hotel to solve the problem.
Re: NFB 175H Thermostat
No, their explanation doesn't make sense, and I still wonder, WHY would you do it that way? Do they have outdoor reset activated? If the settings are done right it will work but it is not the normal way of doing it. BTW, a good boiler you got there.
JMWHVAC
Re: Help setting up variable speed injection mixing
It may be too late, but I’m impressed with the Taco Radiant Mixing Block for injection mixing. Expensive, but so easy to pipe and program.
Re: Bell & Gossett Circulator
Do nothing at this time.
The expansion tank is part of the heating system and when I was in business, I included a replacement expansion tank in the price of the new boiler job. Do you have the contract for the replacement gas boiler? look closely at the terms of what is included in the job. Your contract should include a new expansion tank (but not necessarily) and a new relief valve (because that comes with the boiler already installed at the factory). You should also get a new circulator pump because that is included at the boiler factory. that is why I am suggesting that you do nothing.
Depending on the contract for your replacement boiler, things like gas piping, electrical connection to the existing power switch (that operated the oil boiler) and several other things should be part of the job.
Re: Bell & Gossett Circulator
I have some idea that @sjh does not have a full and complete understanding of the heating system and just wants to stop the noise that the B&G circulator was generating as a result of some other influences regarding either a leaking relief valves, shutting off the burner, closing a valve, and/or running out of oil or some combination of them. or perhaps another unrelated cause.
I also understand that there will be, in the near future, someone that understands boiler systems, on location, to install a new gas fired boiler.
I also understand that turning off the switch to the B&G circulator resolved the immediate noise issue.
I might suggest that @sjh leave the B&G Circulator switched off until such time that the new gas boiler installation commences and to make mention of that noise to the installer(s) of the new gas boiler, as they will be able to resolve the noise issue as a part of the new boiler installation project.
Any attempt to get that pump to operate at this time, without a more complete understanding of the purpose of that circulator, would be unhelpful as the information provided to date does not actually tell the whole story.
Re: Bell & Gossett Circulator
That circulator was an add on for some reason. It certainly isn't original. The loop is probably air locked because of the leak and shutting off the water.
HVACNUT
Re: indirect tank deterioration
@archibald tuttle said "this hyrdronic circuit receives actual boiler water from the cast iron steam boiler"
Their in lies the rub…. Steam boiler water is an open system, therefore lending itself to constant oxygen infusion into the boiler water. That nipple may have been made of material that is less resistant to the perils of oxidation lending itself to a greater instance of corrosion that other parts of the hydronic system. Or perhaps that was the only fitting that rendered a small leak to allow the rust to make itself visible on the exterior of the pipe whilst the rest of the wet portion of the system has only interior signs of rust and corrosion. This is typical of steam boiler systems below the water line. Perhaps a boiler water treatment plan can be implemented to retard the corrosion process, as is done on many steam boiler systems.