Honeywell TH 4110D wiring question

[hc_24]

I have a EWC -ST3D controlling 3 zones. I have oil furnace hot air heating and american standard central airconditioning. I want to replace the dial thermostat with a honeywell TH 4110D programmable thermostat on Zone 1 since it is the compatible thermostat per the manual. The wires coming in Zone 1 are W, Y, R1, O, B and G from the EWC-ST3d panel. The terminals available on the thermostat are: W, Y, G, O, Rc, R, B and C. Can you suggest the wiring diagram to connect the wires to the thermostat?

Thanks You.
-Harsh

[Eric K.]

Harsh,

Match terminal to terminal. Also, jumper the R and Rc on the thermostat and connect to R1 on the zone panel. Do not connect the C, use the batteries to power the thermostat.

Eric

[hc_24]

Thank you!