Wire Diagram Honeywell Rth221b Terminals. Honeywell rth2300 rth221 wiring diagram how to install honeywell thermostat with ly 2 wires unique honeywell thermostat heat pump wiring 4. For the y y1 and y2 wires y or y1 will go to the y terminal and y2 will go to the y2 terminal.
6 remove any jumpers. View and download honeywell rth quick installation manual online. Honeywell thermostat th4210d1005 wiring rth111b installation guide rth221b diagram wire for home nest 1st impressions rth111 digital non programmable user s quick.
Wiring diagrams contains all the essential wiring diagrams across our range of heating controls.
If you have separate wires for o and b you will want to tape off. Honeywell rth221b wiring diagram. The honeywell rth221b thermostat is a one week programmable thermostat that allows you to set up to four periods per day. Wiring if labeled wire does not match any terminal designation see diagram.