Temspec to Honeywell TH6620D1036 Highrise condo


Old 04-26-18, 07:48 AM
Thread Starter
Join Date: Oct 2017
Location: Canada
Posts: 5
Temspec to Honeywell TH6620D1036 Highrise condo


I recently moved into a highrise condo built in the 60-70s. It has central heating and AC, although I don't know what is specifically used. The heating and air conditioning are currently controlled by two analog Temspec thermostat units as shown in the picture. I had received a used Honeywell TH6620D1036 and wanted to try upgrading to it. But when I opened up the wiring, it wasn't quite as simple as the instructions indicated since the old unit doesn't have letters and the wire coloring is very faded. I'm hoping to get some advice.
Attached Images      
Sponsored Links
Old 04-26-18, 10:43 AM
Join Date: Feb 2014
Location: USA
Posts: 2,104
The old stat is a line voltage stat ( 120V ). The Honeywell is a 24 v stat. So you can't use the Honeywell.
Old 04-26-18, 05:53 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 51,376
Upvotes Received: 206
You are going to need a high voltage fan/coil thermostat like the Honeywell.....
TB6575A1000 or TB6575B1000
Old 04-28-18, 01:34 PM
Thread Starter
Join Date: Oct 2017
Location: Canada
Posts: 5
Oh thanks, I didn't know there were different types of thermostats like that! I'll try getting one of the line voltage you guys suggested and hopefully it will make more sense.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes