Need help with testing old Gas valve on old American Standard Boiler

Joseph_4

Hi
I have a customer with an old American Standard Boiler.. He has a really old gas valve.. the power is on pilot on but boiler not firing.. does anyone recognize this valve and which terminals should i test for 24 volts to open valve up to see if valve is dead. Here are some pics.
thx
Joe Hardoon
HHI services

Joseph_4

here is one more

nicholas bonham-carter

It looks like an old Basso switch there, and sometimes the button will be binding on the cover, and will prevent the button from fully returning, and therefore preventing the proving of the pilot.—NBC

Joseph_4

the pilot itself lights with a new baso box... you can see it at bottom front of boiler.. is that what u are referring to?

ch4man

your Baso switch is open. the red button is up indicating its open.
open it up and see if you have a voltage drop across the switch.
clean the pilot, replace the thermocouple and please check the venting and flue gasses for CO levels.
I;d hate to go through all that just to condemn it due to safety concerns but it must be done

ch4man

upon second look, it may be a boat anchor.
zoom in on the gas valve and you'll see a terminal broken off. (a detroit lubricator with a hydraulic safety, very cool)

might be able to moderize the boiler but not financially worth it

Joseph_4

what is a boat anchor?

Solid_Fuel_Man

Boat anchor is referring to an old inefficient boiler or furnace which may still run but is using fuel so inefficiently by today's standards it should be replaced.
Definitions by SFM

nicholas bonham-carter

Sharp eyes ch4!—NBC

EBEBRATT-Ed

If they can make it through the winter SAFELY that system ought to be replaced

JUGHNE

The lighting instructions imply more than one pilot.
I service one of these that has 4 pilots. They all must be lite and holding on their thermocouple before the Baso switch will hold to energize the gas valve. Assuming the wires are connected to it.