Installing a second Taco zone valve


  #41  
Old 02-26-15, 05:45 PM
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Yeah, I guess you could say that. But you're 'mixing your terms'. CURRENT is not VOLTS... but I know what you mean, I think, and yes, there will be current flow, the amount that the thermostat needs to run, in that wire, and in the red wire. The red wire also will carry the current that the zone valve needs to open when there's a heat call.

If you study the drawing, and mentally eliminate every thing but the thermostat and the transformer, you will see that the transformer has a direct connection to the C and R terminals.
 
  #42  
Old 02-26-15, 07:21 PM
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Ok so I just picked up the 18/3 cable. Now would it damage anything if I hooked the basement one up say today and main floor tomorrow. Since there is a significant more work involved in that one and I wouldn't want to keep my whole house off for that long with wind chills below zero. I'm going to say no because they are separate zone valves.
 
  #43  
Old 02-26-15, 07:51 PM
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No problem at all... go for it.
 
 

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