Radiant actuators thermostat wiring

jpflys1

Hello,

Do I have this wiring correct to control 2 radiant zones, pex manifold with 5 circuits (3 &2 each) ?

W/M 97+ call for heat is contact ( no voltage)

boiler will control system circulator, thermal actuators require 24v (n/c) to open

I do have Diff bypass valve to compensate for time delay of end switches 

Thanks in advance,

JP

jpflys1

EdTheHeaterMan

Looks right. are you having a problem? Assuming the top circle is a 120 VAC primary to 24 VAC volt secondary transformer rated at 50 VA

jpflys1

thanks for quick response Ed, I had it different (new install, have not fired up yet) and knew it did not look right. Yes, it is boiler transformer: 50 VA 120 p/ 24v secondary. Boiler can't use much for itself I would think.

EdTheHeaterMan

What boiler is equipped with a 50 VA transformer? What is the brand and model number on the rating plate? what else is connected to the transformer?

jpflys1

Weil McClain 97+70CT, just boiler internals

hot_rod

A relay box is another option. With thermal actuators, the inrush current is what you want to calculate with. If all 5 called on at the same time for example.

6 Va is a common thermal actuators x 5= 30va transformer.