Thank you in advance for any help and indulgence with my amateur problem.
I have a residential heat-only radiant system. The system has a number of zones, each controlled by a valve. The valves are connected to a relay board. On the relay board, I just need a thermostat to close the link on two input wires to turn on a zone.
Most of the house is controlled by Upinor radiant thermostats which are simple 2-wire units, and I just hook up the two wires and it works fine.
One zone was not wired, and I am installing a honeywell wireless thermostat to control that room. I am having some difficulty wiring the receiver to the relay board.
I wired 24VAC out from the relay panel, Common to C and the hot to R (and bridged to Rc and Rh). The power seems to work fine, the receiver connects to the thermostat transmitter, and if I turn up the setting the heat circuit flips on the receiver and the heat light goes on.
So I need to hook two wires from the receiver to the relay panel to close the loop when the system should be heating.
I thought from reading the manual that the outputs should be the W wire, and a splice off the common coming into the receiver unit. But this does not trip the relay when the heat goes on.
Can anyone help me with how I should wire to the red and white inputs on the relay panel?
Thank you for your help.
Honeywell Thermostat receiver
Relay panel: red and white wires in from the top from thermostat