Chronotherm III -> IV Help with wiring w/Pics - http://www.hvacmechanic.com/ Forums


Original message

bht-kevin

71.170.121.146

"Chronotherm III -> IV Help with wiring w/Pics" , posted Tue 2 Oct 01:55:user profileedit/delete messagepost reply

I am replacing my Chronotherm III with a Chronotherm IV / Wireless Receiver combo. I need just a bit of help with the wiring if someone can assist.


Here is the old unit wiring:


Here is the new unit wiring diagram


Here is where I am stuck at...


What do I need to do with the O terminal from the old unit? Any help would be great!

Thanks,
Kevin Arnold

[this message was edited by bht-kevin on Tue 2 Oct 01:56]

 

Replies:

acefurnacefxr



75.13.50.255

"Re(1):Chronotherm III -> IV Help with wiring " , posted Tue 2 Oct 06:59user profileedit/delete messagepost reply

The new one is not Heat Pump compatable

Pay no attention to fitter his threads are crossed.

22 years of HVAC service

HVAC REPAIR IS NOT A DIY WEEKEND PRODJECT we techs that know this have 20 + years in the field and we have years and years of education. Trust me if you think you know it all you know nothing compared to a experenced trained technician.

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bht-kevin

66.138.197.138

"Re(2):Chronotherm III -> IV Help with wiring" , posted Tue 2 Oct 11:57:user profileedit/delete messagepost reply

Arg! Everywhere I look online for the tech info on this unit says its heat pump compatible. I just don't want to pay someone to come out and say "yup, this won't work!"

** Edit.. looks like I should have bought the W8665E instead.

[this message was edited by bht-kevin on Tue 2 Oct 12:13]

 

 

smythers1968



66.232.220.95

"Re(3):Chronotherm III -> IV Help with wiring" , posted Wed 3 Oct 21:10:user profileedit/delete messagepost reply

Granted it is not compatible but you can jumper the O to the Y

Life lesson #12 Know when not to do it yourself.
WOW That Can Hurt!!

[this message was edited by smythers1968 on Wed 3 Oct 21:13]

 

 

Houston204



98.196.66.53

"Re(4):Chronotherm III -> IV Help with wiring" , posted Fri 5 Oct 12:30user profileedit/delete messagepost reply

In the heat mode you would only run your heat strip. Not very efficient and it might not keep up.

"Tip of the Day" Remember to remove power first.