Ok team – I have worn out the search function on this site and I think I have a fairly simple problem I’m trying to solve, help is appreciated; here it goes:
Looking to run one thermostat to control two heat sources:
System configuration:
- Outdoor boiler on/off on aqua stat in the unit & pump runs 24 x 7 (so no need to control anything out there)
- Inside forced hot air system with water to air heat exchanger
The issue; I’ve tried a number of professional Honeywell thermostats ( I have the 7600 right now) to control two heat sources. The heat pump with emergency backup is out as I have no heat pump and I don’t want my condenser running while I’m trying to heat
. So I went to the two stage heat, it works but I can’t configure the settings, I can’t change the temperatures. I called Honeywell to verify my connections they said everything was correct and the only way to use any Honeywell in this configuration is to use the non configurable two stage heat. I’ve attached a picture of what I have done, the yellow lines are how I’m setup in the 2 heat stage mode and it works but the furnace kicks on after about five min of the fan just running so it defats the purpose of running the OWB. I realize I can go the two thermo route – just feel like we are smarter than this problem and I just have the wrong thermo – any thoughts? Trying to stay away from adding switches (I can think of a few ways to do that) and or additionally relays, trying to make this as straight forward for the wife and kids while I’m away on business. HELP!!!
Thanks,
Jamie