A couple of weeks ago I had Trane XR13 heatpumps installed with XV80 two stage V/S furnaces in a dual fual application. These were installed with Honeywell IAQ thermostats. Initially the installer forgot to set the dip switches to take advantage of the Comfort R. Another tech came back and fixed the dip switches and also put a jumper across Y and O. I had previously posted a question about the problems I was having prior to the tech coming back out. Mark Beiser was kind enough to comment on the jumpers. At the time I hadn't actually looked to see what the new wiring looked like. I just did that today and here's what I noted.
I have a jumper between Y and O. A yellow wire runs from the Y terminal of the furnace control board to the Y terminal on the tstat interface and then disappears to the the outside unit. From the O terminal on the tstat interface an orange wire disappears down into the outside unit. There is no wire from the O terminal on the tstat interface to the O terminal of the furnace board.
Is that the way it's supposed to be?? There is a note in the installer's guide about connecting the Y and O on the furnace board in a heatpump application, but I didn't know if there was supposed to be a wire from the O on the furnace board to the O on the tstat interface.
I also noted a jumper between W1 and W2. Again, as I read the installer guide it appears to say that the jumper is for use with a single stage thermostat. The IAQ is a 3 stage heat thermostat, shouldn't the jumper be removed in this application?
I'm asking you guys these questions because I hate to pimp the installers for nothing. I hate for them to think I'm checking their work, but I guess I am. I guess my comfort level wasn't that high during the inital install and I just want to make sure this is all done correctly to take advantage of the magic tstats.
On a sort of unrelated question about my IAQ tstats. In the auto-discover mode, the stage 1 compressor rate (220) is 3, the stage 1 heat CPH (240) is 5, and the stage 2 heat CPH (250) is 5. Are these appropriate settings? I thought I had seen some comments on these settings in this forum but I can't remember what the suggested settings were.
Thanks for all your help.