Gabriel Posted September 3, 2021 Posted September 3, 2021 (edited) Hello. I’m trying to wire my Insteon 2441TH thermostat to the heat pump unit in my apartment. After trying to wire it with no success (ac turned on but was blowing hot air) I read that’s not possible using the 2441TH. But what if I wire only the cold air to the thermostat (I live in South Florida, no need to hot air here). Is that something possible to do? My current wiring diagram for the normal thermostat that’s currently installed is: Thermostat | Heat pump Rc jumped to Rh | R W jumped to Y | Y O | O G | G Common wire is there but currently not being used Edited September 3, 2021 by Gabriel
larryllix Posted September 3, 2021 Posted September 3, 2021 What real thermostat was running the heat pump before? Did you mark down the wire colours and connected terminal markings before you removed it?
Brian H Posted September 3, 2021 Posted September 3, 2021 At the least. You will have to provide the C Common power connection. To power the 4411TH.
MrBill Posted September 3, 2021 Posted September 3, 2021 On 9/3/2021 at 1:21 AM, Gabriel said: Common wire is there but currently not being used Expand You'll also need to check the other end inside the heat pump. It's normal to hook up neither end with older thermostats, Common was never needed are rarely hooked up at the equipment end.
Gabriel Posted September 3, 2021 Author Posted September 3, 2021 Hello. On 9/3/2021 at 9:53 AM, larryllix said: What real thermostat was running the heat pump before? Did you mark down the wire colours and connected terminal markings before you removed it? Expand The thermostat is a Pro1 t701. I did mark all the wires connected to the thermostat before I removed. On 9/3/2021 at 10:09 AM, Brian H said: At the least. You will have to provide the C Common power connection. To power the 4411TH. Expand On 9/3/2021 at 1:46 PM, MrBill said: You'll also need to check the other end inside the heat pump. It's normal to hook up neither end with older thermostats, Common was never needed are rarely hooked up at the equipment end. Expand I do have the Common coming from heat pump. It wasn't not connected to old thermostat but wire turns on the new one. I could power on Insteon thermostat, can control the fan. Only thing I'm having issues is to make it to blow cold air. That's the old / new wiring I tried. Old Thermostat | Heat pump | Insteon Thermostat Rc jumped to Rh | R | 24RH W jumped to Y | Y | Y1 O | O | Tried either W1 or left unplugged G | G | G ------ | C | C Wiring like that blows hot air instead of cold
larryllix Posted September 3, 2021 Posted September 3, 2021 On 9/3/2021 at 6:15 PM, Gabriel said: Hello. I do have the Common coming from heat pump. It wasn't not connected to old thermostat but wire turns on the new one. I could power on Insteon thermostat, can control the fan. Only thing I'm having issues is to make it to blow cold air. That's the old / new wiring I tried. Old Thermostat | Heat pump | Insteon Thermostat Rc jumped to Rh | R | 24RH W jumped to Y | Y | Y1 O | O | Tried either W1 or left unplugged G | G | G ------ | C | C Wiring like that blows hot air instead of coldDon't quote me but IIRC the O wire controls the direction of the valves for cooling or heating. You may need to reverse the logic polarity of the contact open/close.Sent from my SM-G781W using Tapatalk 1
hart2hart Posted September 3, 2021 Posted September 3, 2021 See page 13 of following manual on how to set reversing valve mode between O/B so it will cool. http://cache.insteon.com/documentation/2732-xx2-en.pdf
Brian H Posted September 3, 2021 Posted September 3, 2021 I agree with larryllix. The O is probably the reversing valve and it is being set to the heat position.
Gabriel Posted September 4, 2021 Author Posted September 4, 2021 On 9/3/2021 at 9:38 PM, hart2hart said: See page 13 of following manual on how to set reversing valve mode between O/B so it will cool.http://cache.insteon.com/documentation/2732-xx2-en.pdf Expand Thank you, but my thermostat is the one on page 12, so it doesn’t even have that option to reverse O/B On 9/3/2021 at 9:24 PM, larryllix said: Don't quote me but IIRC the O wire controls the direction of the valves for cooling or heating. You may need to reverse the logic polarity of the contact open/close. Sent from my SM-G781W using Tapatalk Expand On 9/3/2021 at 11:36 PM, Brian H said: I agree with larryllix. The O is probably the reversing valve and it is being set to the heat position. Expand So, I endup wiring O wire connected to Y1, G wire jumped to Y wire connected to G and W1 and now it’s blowing cold air (I’m pretty sure I won’t have hot air, which again, it’s fine). Everything seems to be working good now. Hopefully it won’t damage my A/C circuit somehow. Thank you all!
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