CENTRAL HEATING

[mickygard]

changing honeywell t40 room stat for sunvic tlx 9201.Finding wiring a bit conf

using.Honeywell is connected with 4 core cable.Red-1 Blue-2 Yellow/green-Eth Yellow-3
Sunvic has1-common 2 satisfied
3-demand 4-connect to neutral.Are all four wires used if so can you tell me which goes to which.Thank you.

 

[sparky1505]

Hi there i belive that on your sun vic
your red is common, 1
your blue is neutral 4
your yellow is demand 3
satisfied 2 not used
green/yellow to earth. hope it helps