Ok Then, I went to take a Picture of the System but My new Ditigal Camera had the battery out of it.... it's gone missing, will (slightly) kill 13 year old. !
I will describe the system & Label the Controls (brand names) as I go along.
1st the left side... Starting at the top of the floor joist, you have (2) 1 inch copper lines feeding into -- Red Box's with manual controls on top, then feeding into a Common Tee then feeding into (1) inch line into (brand name) Extrol, Model 30, 12 PSI .. Tank. on top of the gray Extrol Tank is -- another valve (brand name) American Air Purge.
from here, feeds down into the Top of Broiler, on the Left (top) Side and to Front of the Boiler as you stand in front of the Boiler where the Fuel Control , Ign., Blower motor and all that is located. Note: I just felt the copper lines coming up from the 9described above) and they were warm until I got to the Extrol Tank... Slightly warm on the Broiler Feed.. but Cold on the Output of the Tank... going to the red valves and on it's merry way... all cold.
Now, You have two lines coming in ...from the overhead floor joist above. (1) line (1 inch copper dia.) feeds down to a ( brand name) Taco, cartrigage circalator, Model 007-F4, 110 C. or 240 F. This Line feeds straight down with another valve tee'd in (will describe next) and into a larger 2 3/4 dia. (black) pipe and then into the Boiler (going into the Boiler on the Right Side, Bottom of Boiler and Feeding into the Front of Boiler.
The 2nd (1) inch copper line feeds from the Top of the Floor and tee's into the Line (mentioned above) into the larger 2 3/4 dia. pipe feed and just before the Tee-In..... this valve is installed (brand name) Grandfos, 115 Volt, Type 15-42 (this valve is Blue and was warm to the touch last night. Today, is just luke warm to the touch. The other valve on the (mentioned above) is cold and was (running straight down from floor joist) cold last night. last night the temp gauge was -- 180 degrees and 20 psi. Today, and I did not cycle it with room re-o-stat was - 140 Degrees and 20 PSI.
Other Information: Burnham (low pressure) Boiler, Model 4WFH, S/N 64410206; HTG CAP. = 165 MBA; MAX. TEMP.= 250 F.
Honeywell control box, mod. RA 832A
Again All Hot Water Radiators are cold ..both upstairs & down. It's no wonder when I do not feel heat pass the valves.
Let me know what you think, I can check volts & exact heat values with my heat gun.