Installing new C Wire for 2 zone, single stage heat


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Old 04-30-19, 12:01 PM
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Installing new C Wire for 2 zone, single stage heat

I have a 2 zone, single stage, heat only system with 2 wires running to each thermostat. I'm looking to install 2 Ecobee's; I have a second Honeywell AT72D1683 that I can install if needed and have new 5 wire cable ready to run as soon as I know where to hook it up.

Zone Valve = Honeywell F-10 0805 V8043E1019
Transformer labeled 8004 (Honeywell)

I'm attaching a diagram of the current configuration hexagons represent wire nuts. Photos of before and proposed after. Just looking to make sure I'm connecting the common to the correct places so I don't short anything out or fry my furnace.

Before:


Proposed After:
Name:  prop.jpg
Views: 235
Size:  52.0 KB
 

Last edited by PJmax; 04-30-19 at 04:20 PM. Reason: imported 2nd pic from link
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Old 04-30-19, 04:16 PM
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Welcome to the forums.

Your diagrams are very good and your proposed one is correct.
 
aric8456 voted this post useful.
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Old 04-30-19, 04:20 PM
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Great, thank you so much!
 
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Old 04-30-19, 04:23 PM
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Many times when a member uses a hosting site..... after a while the pictures are removed. I try to import as many pictures as I can here. The second picture is hosted here at DIY. You have 10mb of picture storage at your disposal here.... How-to-insert-pictures.
 
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Old 05-01-19, 04:24 AM
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Attaching a before and after photo as well as a PDF with both. Tried to add the original Visio, but it doesn't want to accept.
 
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File Type: pdf
Thermostats.pdf (191.8 KB, 97 views)

Last edited by aric8456; 05-01-19 at 05:01 AM.
 

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