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[lasor1]

Hello I have about got my owb setup I have all exchangers in and all electric runned except my thermostat. I have a two stage programmable thermostat my heat pump only works in aux mode are there a way to use same thermostat to may just fan kick on for my primary heat owb and my heat pump secondary I have an add thermostat that came with owb and a white Rodgers relay I have no clue about it I can run both thermostats but prefer one. An someone tell me what I need to hookup or draw me up a diagram of what I need to do thanks for all your help. Also I will be running circulation pump 24/7 if you need to know about that thanks!

[Scott7m]

Using 2 is much easier, takes me about 10 minutes to have it working

[lasor1]

Okay Scott what do I need to install the second one how would u do it are there a wring diagram or wire colors you can tell me to get this second thermostat going and do I need to run a second thermostat wire or can I use jumpers off existing wires thanks for your help.

[Scott7m]

Just use jumpers.......    Buy you a honeywell digital with 1h/1c cycle

Install it directly beside the existing one, use a jumper from the r post on the one you have now, to the r post on the new one.   Now run a jumper from the green wire on your existing stat to the W post on your new one and you've got it.

Your old one will work as always, the new one will just run the fan as needed.

The old one can now automatically back up the one controlling your owb system, let's say u set ur new one to 74, then leave for a day or two, you can set your old one to 70 and it will automtically back ur system up, it will also eliminate any chance of your boiler freezing as long as your pump is left on, the air blowing across the coil will send a bit of heat back to the boiler

[Scott7m]

That works 95% of the time, if that don't send me a msg

[lasor1]

Thanks Scott That is Alot simpler than trying to run one and a goodback up from existing system thanks for your help!