Help ID'ing hydronic system

[apizor (Andrew Pizor)]

I’m taking the InterNACHI course and trying to identify my HVAC system. Could someone take a look at the photo and tell me if I’m correct?

Based on the label, it is a Burnham V8H boiler, oil, with a cast iron heat exchanger, low-temperature. I assume it has a tankless water heater because there are a couple copper pipes coming out of it and no water heater that I can see (nor an expansion tank). I also assume it’s gravity feed because it has 2 huge cast iron pipes, and it doesn’t look like there is a pump. But I can’t figure out the pipe arrangement. The radiators only have one pipe going into each of them with an adjustable valve. Does that mean it’s a one-pipe system? Is there anything else that is obvious about this system from the photo that you would put in a report?

[lkage (Larry Kage, CMI)]

@apizor

I also assume it’s gravity feed because it has 2 huge cast iron pipes, and it doesn’t look like there is a pump.

@apizor

Is there anything else that is obvious about this system from the photo that you would put in a report?

The sight glass helps you know it is a steam system. And, I would put the potential ACM in the report.

And, the expansion tank is probably in the attic.

[ccurrins (Christopher Currins, CMI)]

@apizor

Burnham V8H boiler

Google this and it should tell you everything you need to know.

[jjonas (Jeffrey Jonas)]

It is a STEAM Boiler System.

OnePipeSteam.pdf

[lhenderson2 (Lon Henderson, CMI)]

Sight glass, pigtail, single pipe=steam system

[apizor (Andrew Pizor)]

What is ACM?

[lkage (Larry Kage, CMI)]

@apizor

What is ACM.?

Asbestos Containing Material