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thermostat installation
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  1. HVAC
    Hello, I'm new to this forum and have made this account to ask some questions. I really hope someone can help me. To cut a long story short, I hired some plumbers to install a new Vaillant Ecotec Pro 24 boiler and they told me that they can do all of the relevant electrical wiring themselves...
  2. Electrical
    Looking to install Fahrenheat PLF504 Hydronic Baseboard Heater https://www.homedepot.com/p/28-in-Electric-Hydronic-Baseboard-Heater-PLF504/100552368 with Fahrenheat Thermostat Model # MD26R https://www.homedepot.com/p/Fahrenheat-Non-Programmable-Wall-Mount-Thermostat-MD26R/202267265 Can I use...
  3. HVAC
    Hi, is there anyone who could help me see if I have this wired in correctly? I'm trying to convert my old 4-wire TRANE thermostat to the 5-wire Insteon Smart Thermostat. I believe I have things connected properly but when I switch the power back on there's doesn't seem to be any power to the...
  4. HVAC
    Hi! First time poster. I'm hoping someone on here understands the 24VAC side of HVAC controls better than I. I just bought a new smart thermostat (Honeywell WiFi RTH6580.) I've pretty much figured out how it works, but I've seen suggestions to hook it up in a way that makes me nervous. The...
  5. HVAC
    I have a Bryant Plus 90 (installed in 1995) gas furnace and heat pump/ac unit to which I am trying to add a Honeywell Lyric T5 Thermostat. I am having trouble Wiring it because the original thermostat (Bryant brand) has separate O and B terminals while the new one has a single O/B terminal...
  6. Electrical
    FYI, I am NOT considering doing this conversion by myself (would be hiring an electrician). Rather, I'm trying to suss out the following since the people that owned this house before us did some....odd things so I've learned not to take anything at face value: I have a forced air gas furnace...
  7. HVAC
    Hello, I am trying to install a lyric T5 smart thermostat and it requires a "C" wire. my current setup is as shown in the attached picture. I have a wire ran to O, G, Y, Rh and a jumper from Rh to Rc. I have two additional wires (one white and one orange) bundled up and left unconnected in the...
  8. HVAC
    Was demoing out a damaged hospital wing and snagged a new honeywell simple digital thermostat thinking I could easily swap it with mine at home (buttons no longer work to adjust temp) turns out I grabbed a more complicated wiring version than mine and need help figuring this one out. Old Unit...
  9. HVAC
    Hey everyone. As the title says I want to install Nest and I do not have a C wire currently. I want to install a C wire but I need to get some advice. I believe I will be able to pull a new wire without problems down to the furnace from the thermostat. I was going to get an 18/5 wire. My...
  10. HVAC
    I decided to upgrade my old thermostat with the new wifi enabled Radio Thermostat but I ended up with three wires that I did not use. OLD https://customer.honeywell.com/en-US/pages/product.aspx?cat=HonECC%20Catalog&pid=T8575B2007/U#LiteratureDownload NEW...
  11. HVAC
    I just replaced an old Ritetemp 6008 thermostat that wasn't keeping the temperature very constant with a new Honeywell RTH2410 programmable thermostat. Ever since I installed the new thermostat the furnace breaker will trip after the heat has been running for a little while. I can't pinpoint...
  12. HVAC
    I have an old basic manual mercury thermostat running a forced air natural gas central heat furnace. No air conditioning, nothing fancy. I just bought an Uberhaus Design programmable thermostat from Rona. There is no support phone number provided. The directions do not include instructions for...
  13. HVAC
    Hi all! I live in a condo with gas forced air heat/AC. I decided to replace my thermostat, so I bought a standard digital honeywell. When I removed the old thermostat, I discovered that there are more wires in the old one than there are spaces to insert wires in the new one. Both the old and...
  14. HVAC
    I am trying to replace my old thermostat with a new Ritetemp 6036. Below is how the wires are connected on my old Arcoaire: Name of old thermostat : Arcoaire Model of old thermostat : 9105N or T874R1517 - I think 9105N because that number is on the subase as well. Model of old subase ...
  15. Electrical
    Hi, I have a new propane gas furnace installation (we converted from oil). Everything seemed fine, except that the ground fault tripped in a bathroom, they tried the air conditioning, but it will run for a few seconds and then stop and at this time the furnace will turn on. They could not...
  16. HVAC
    Outside Unit: Carrier 38ycc030300 Airhandler: FA4ANF030000AFAA Old T-stat: Bryant TSATBBNHP01B Problem: Replacement thermostat blows warm air for AC. Heat is working just fine with the heat pump. First time visitor. Here is the wiring: Red Wire to R White wire to O/B (based on config...
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