Ask Experts Questions for FREE Help !
Ask
    joeyd's Avatar
    joeyd Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 26, 2007, 03:54 PM
    Changing thermostat from 110v to low voltage
    Want to change 110v thermostat to low voltage programmable. Is it possible and how.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
    		  
    #2

    Nov 26, 2007, 05:11 PM
    They may make a 120 volt digital?
    If you want to use a Low Voltage (24 Volts AC)Programmable, You will need a 24 Volt Transformer/120 Volt Primary(40 VoltAmp will handle a couple of contactors), Then the 24 volt AC Coil Contactor, With the Contacts Rated for the Voltage and Current of the heater.
    franktheman's Avatar
    franktheman Posts: 1, Reputation: 1
    New Member
    		  
    #3

    Jan 26, 2011, 09:57 AM
    I had this issues in 1996 when I bought my house and wanted to have a programmable thermostat installed.

    They were all 24volts so I had went to home depot and looked in there and inquired with no success. I know what I wanted from doing electronics in college.

    Sure enough I found a device that I believe is called an adapt-a-stat which took line voltage (110v) at the original thermostat, converted a 24V fed to the thermostat, and then send a 110v feed to the boiler when thermostat called for the boiler to run.

    I have searched all the posts and have not seen anyone mention it. I had an electrician by my house who was shocked to see the gadget in the wall behind the new digital thermostat.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Digital Thermostat for Line Voltage Heating AND Cooling? [ 2 Answers ]

Hello folks, I live in a condo in a relatively old building (~65 years) which uses line voltage thermostat controls (120/240V) for both heating and cooling (the heating and cooling source is a convector - they switch the building from heating to cooling every season). I'm trying to find a...

Changing over from White Rodgers Thermostat to Honeywell thermostat [ 3 Answers ]

I have a White Rodgers 2 stage heat/1 cool model 1F58-58 heat pump thermostat that I want to change over to a Honeywell programmable thermostat model RTH7400. I need help in trying to figure out the wiring part of this whole thing. Can someone out there please help. I would certainly appreciate...

Changing Thermostat [ 2 Answers ]

My husband and I changed our thermostat tonight. We bought a Honeywell T87F 2873 Heating-Cooling Low Voltage Thermostat, when we took the plate off the old one it had 4 wires instead of the two wire set up. We connected the 2 black to each other, and the 2 white then put it back together. The...

Changing thermostat [ 1 Answers ]

I have a electronic thermostat and have terminations r,c,w,y,o,b,g, and my central air unit has four wires one is blue,green,white,red where would these go on the new thermostat:confused:

Wiring Thermostat-High Voltage to 24v [ 1 Answers ]

I'm in the process of having my 1941 oil boiler replaced with a new gas boiler, and I want to replace my line voltage thermostat with a 24v programmable thermostat. At thermostat now is 110 with 1 black and 1 white. I know I will need a 24v transformer but don't know exactly how to wire this. Can...

View more questions Search