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12-12-2006, 10:16 AM
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Handyman
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Join Date: Nov 2005
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Posts: 30
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Electrical Connections for electronic valve
I am installing a normally closed electronic valve in my hot water baseboard system. My question is about how to connect it. The valve has two red and two black wires, which require 24v.
On my system, there is TV and T connections (thermostat) and B1 and B2 which is connected to the electronically controlled exhaust valve.
Would I connect both red to B1 and both black to B2?
In that scenario, suppose that the thermostat is still calling for heat, but the boiler shuts off because the water temp is sufficient - wouldn't that mean the exhaust valve closes and would then mean the new valve shuts off (thereby stopping the flow of water through the system even though the pump is running)?
Please help. Thanks.
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12-12-2006, 08:35 PM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 3,343
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two of the wires are the valve solenoid, two are a normally open switch for aux equipment. is this a TACO valve?
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01-11-2007, 05:52 PM
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Handyman
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Join Date: Nov 2005
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Reply to HayZee
HayZee.
Sorry for taking so long to get back to you. It is a Honeywell V8043. See below. And sorry, they are yellow and red wires. The two yellow wires go directly into what looks like a solenoid, the two red go into a plastic piece (which I have no idea what it is)
Can you provide details as far as how to connect this? THANK YOU
Below is what is read on the box:
2 position, straight through control
3.5 Cv capacity
Integral line voltage end switch permits operation of auxillary equipment
End switch rated for 4.4A running, 26.4A in rush at 120Vac; 50 VA pilot duty at 24Vac
On power failure, vavle spring returns closed
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01-11-2007, 06:23 PM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
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two yellow wires go to the heating element on the valve stem - voltage applied heats the element and opens the valve. Two red wires are a n.o. switch. when valve opens switch closes. aux equipment can be attached to this limit switch. i.e. a burner controller. normal zone valve operation, thermostat operates the valve which closes a set of contacts connected to the burner control. once the valve is open burner starts. up to temperature the thermostat opens shutting off power to the valve. valve closes and opens the aux switch which shuts down burner
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01-11-2007, 06:44 PM
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Handyman
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Join Date: Nov 2005
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Followup
I kind of understand. Based on the diagram that I emailed you, can you be more specific to which exact terminals I would connect the two yellow wires to? Also, does n.o. indicate normally open? Finally, so in my case the red wires go unused?
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01-11-2007, 08:09 PM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
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Honeywell Zone Valve
See if you can follow this diagram. The two orange are for the aux switch on the valve. I looked at a site, the valve is a motor driven valve with a spring return closed.
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01-13-2007, 12:24 PM
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I am wondering if you could be more specific. I do not understand which terminals I should connect the yellow and wires to. Please help. Thanks.
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01-13-2007, 05:38 PM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
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if you want the valve to open with power applied connect to the two red wires (24 volt) yellow or orange is the aux switch inside the valve. normally open type.
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01-17-2007, 08:48 AM
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Handyman
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Join Date: Nov 2005
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More info
HayZee, thank you. You have been most patient. I have decided really do my homework on this, and in doing so, realized that I have any additional problem. I have e-mailed you an exact diagram of the electrical system.
Two issues:
1) When I turn on thermostat 2, (as you can see by the wiring), it does energize RA89A relay and Circulator 2, but it also energizes thermostat 1, which in turn energizes L8148E and Circular 1, thereby heating both zones of the house. Which is obviously NOT what I want. How should it be wired, so that each system goes on independently of each?
2) I still am confused as to where I connect the yellow and red wires of V8043 to the system. I am mostly confused because I do not get a 24v reading on any terminal other than the thermostat terminals. Based on the diagram, can you tell me exactly which terminal I would connect them to?
Please help. Thank you!!!
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01-17-2007, 09:09 AM
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Handyman
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Join Date: Nov 2005
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HayZee,
Also, I just realized something, because the system has been running incorrectly (with Zone 2 thermostat turning on both zones), I wonder if I even need the HoneyWell V8043 valve? What do you think?
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