I am trying to learn more about how the HVAC system in my house is wired together. I have a two story home with one furnace that is hooked up with a zoned system (2 zones) using a honeywell hz311 zone panel.
On the zone panel there is a section for equipment that has 6 connections that can be made: Rh Rc W Y G DS/BK
Correct if I am wrong but the meanings for each of these connections are:
Rh - This wire comes from the 24VAC transformer on the heating system.
Rc - This wire comes from the 24VAC transformer on the air-conditioning system.
W - This wire comes from the relay that turns on the heating system.
Y - This wire comes from the relay that turns on the cooling system.
G - This wire comes from the relay that turns on the fan.
DS/BK - not sure what this one does.
So on my panel in the equipment section, the only connections used are Rh, Y, and G. I am confused why there is no connection to the W connector. If this is the suppose to go to the relay that turns the heating system on then i would think it would be utilized. I've included a picture of part of the zone panel.
http://s655.beta.photobucket.com/user/zachshutters/media/IMG_0750_zps6be81dc0.jpg.html
On the zone panel there is a section for equipment that has 6 connections that can be made: Rh Rc W Y G DS/BK
Correct if I am wrong but the meanings for each of these connections are:
Rh - This wire comes from the 24VAC transformer on the heating system.
Rc - This wire comes from the 24VAC transformer on the air-conditioning system.
W - This wire comes from the relay that turns on the heating system.
Y - This wire comes from the relay that turns on the cooling system.
G - This wire comes from the relay that turns on the fan.
DS/BK - not sure what this one does.
So on my panel in the equipment section, the only connections used are Rh, Y, and G. I am confused why there is no connection to the W connector. If this is the suppose to go to the relay that turns the heating system on then i would think it would be utilized. I've included a picture of part of the zone panel.
http://s655.beta.photobucket.com/user/zachshutters/media/IMG_0750_zps6be81dc0.jpg.html