Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
845A hooked to L8124A

nick z.
Member Posts: 157
Does the power from 845 go to ZC or ZR? I always forget.
0
Comments
-
if you
want the 845 to power the 8124/burner only, use ZR. ZC is your reverse acting.0 -
Thanks!0 -
In addition I teach and
remember this:
ZC goes to the Zone Controls
ZR is the Zone Return
Not scientific but it works for me!0 -
I relate
it to "the r factor". I wire power to 3. 4 (four-"r" goes to ZR ("r"). Relay closes, power goes to 4, then to ZR!0
This discussion has been closed.
Categories
- All Categories
- 86.7K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 56 Biomass
- 423 Carbon Monoxide Awareness
- 104 Chimneys & Flues
- 2K Domestic Hot Water
- 5.6K Gas Heating
- 103 Geothermal
- 158 Indoor-Air Quality
- 3.5K Oil Heating
- 68 Pipe Deterioration
- 939 Plumbing
- 6.2K Radiant Heating
- 385 Solar
- 15.3K Strictly Steam
- 3.4K Thermostats and Controls
- 54 Water Quality
- 43 Industry Classes
- 47 Job Opportunities
- 18 Recall Announcements