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Re: Is internal circulator needed?
Major clue here. Baseboard hydronics and one tall radiator which, evidently, either can't be or hasn't been bled adequately.
I'm not at all sure that a bigger boiler is going to help you. You need to look at those baseboards and measure them up (the actual finned elements, not the overall length) and get the size of the radiator. Then figure out how much heat in BTUh those can put out. That is the maximum size of boiler that will be of any use.
Re: Is internal circulator needed?
It could be you need more heat emitters, not a larger boiler?
It sounds like you have a primary secondary piping, do the boiler would need a circulator
What brand snd model if boiler and what do you have for heat emitters radiant, baseboard or cast radiators?
hot_rod
Re: Can you help identify my B&G boiler pump? Possible replacement? Repair parts?
NOTHING made now will last 10 years never mind 75. Even if it is the same "identical " pump it is likely made in China or some of the parts are.
There is probably twice the copper in that old motor as a new motor. Take care of it. The volute and housing are probably fine. The motor can be rebuilt at a motor shop and new bearing assemblies are available, I think unless they changed th thing so a new one will not fit.
But you will need a truck to haul the money from your bank to Bell & Gosset. They give nothing away.
Re: Can you help identify my B&G boiler pump? Possible replacement? Repair parts?
That's not a 100. Note the 4 bolt flanges, and flange to flange height difference.
HVACNUT
Re: First time flushing hi-eff boiler-what do I need to know?
Looks like all you need is a flat-bladed screwdriver. And from that drop down screw, you have a Viessmann boiler.
Why do you want to flush your boiler? It should not be flushed unless there's air or a clog you want removed.
Re: Can you help identify my B&G boiler pump? Possible replacement? Repair parts?
Several drops of oil in the pump oil port, a couple of drops in each of the motor oil ports each year and that pump will run indefinitely.
Note @mattmia2 's comment about the mounts.
It's a B&G 100. Still available today.
https://www.supplyhouse.com/Bell-Gossett-102214-1-6-HP-2-NFI-Circulator-Pump
Re: Can you help identify my B&G boiler pump? Possible replacement? Repair parts?
Not a 100- this is that pump's predecessor. My 1940 Bell & Gossett Handbook says it's the model H2, since the pipe connections are 2-inch.
Given the size of that boiler, I'm thinking that circ might be oversized for that system. This can cause the water to short-circuit through the radiators, reducing efficiency. Here's an extreme case I found years ago:
Do you know how many square feet of radiation is on your system?
Also, an old round boiler like that one is inherently inefficient. A combustion test would probably reveal an extremely high stack temperature.
