Thanks for reading my post.
Well, it is a Weil-Mclain boiler, the numbers I found were: 1269463
boiler size: P-466HE
Wiring of the original Aquastat
T- white wire to R845A
Tv- red wire to R845A
Zc yellow wire to ignition (R8184G)
B2 White to ignition
The new Aquastat has:
T W Tv (It says thermostat)
B1 & B2 (burner)
line --- S2.... C1 C2
S1.... L1 L2
This boiler used to have an internal coil to make how water for the showers, and someone cut the pipes, left the original Aquastat L8124L, and setup an indirect fired water heater. My friend told the that the original Aquastat has a low and high setting, so that during the summer, the boiler was still "maintaining" the heat for the baseboards, though using more oil. He suggested replacing it with this L8148A which would only have one high setting (setup to 180 degrees). Lastly he said that the wiring between the two units were the same so I could just follow up the wiring. The house has 3 floors, and the baseboard lines have 4 loops, one per floor and one for the bedrooms, but it did not have any zone valves; so when the only thermostat on the lower floor will call for heat, the whole house would "light up", so now I incorporated the zone valves. All I have to do now is to figured out the wiring... I have done wiring for zone valves in the past which was pretty straight forward, but someone told me that because I changed the Aquastat, that the wiring should be redone! Of course he could not told me how.
So as of right now I replaced the aquastat with a L8148A (not wiring done yet) and added the zone valves (no wiring done). I have an electrical background, so it would be easy for me to follow an electrical diagram. Would a kind soul be able to draw me a diagram I could follow up to wire up this boiler?
I would greatly appreciate the help since the boiler is down until I get the wires done