Replaced my gas boiler but cant figure out the wiring


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Old 10-27-14, 01:01 PM
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Replaced my gas boiler but cant figure out the wiring

I purchased a New Yorker gas boiler CG-D series and everything is hooked up except the wiring. I have a V8043E zone valve, Taco circulator (came with the boiler), 2 wire theromstat and AT72D transformer that I can't figure out if I wired it all correctly. I followed the V8043E wiring diagram and I am having trouble with the wiring because the the boilers control has 2 yellow wires labeled thermostat another wire labeled circulator and I dont know what they should be connected to. Can someone please help with this?
 
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Old 10-27-14, 01:39 PM
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I would strongly suggest that you follow the wiring diagram in the installation manual. If you provide a link to the manual someone will be able to help.
 
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Old 10-27-14, 01:46 PM
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Here is the link to the manual

http://www.newyorkerboiler.com/pdf/1...-D)%20w%20.pdf

Thanks Furd..
 
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Old 10-27-14, 01:48 PM
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I have a V8043E zone valve,
" A " zone valve? as in ONE ?

You only need zone valves if you have more than one zone.

Is there more than one zone valve and thermostat?

Is this system a replacement for something that was already there?
 
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Old 10-27-14, 02:10 PM
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Page 15 of the manual shows the wiring. As Trooper stated, only one zone valve makes no sense.
 
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Old 10-27-14, 03:03 PM
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Sorry. Yes it does have two zone valves and thermostats. The boiler is a replacement.
 
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Old 10-27-14, 03:15 PM
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Well, the system circulator is hooked up to the wires in the junction box as shown on the diagram in the manual.

The zone valves...



The MOTOR are the yellow wires.

The ENDSWITCH are the red wires.

Where it says " TO AQUASTAT ON BOILER " is to be wired to the connections for the thermostat on the boiler.

You don't have an indirect water heater connected to the boiler, is that correct?
 
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Old 10-27-14, 03:23 PM
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No indirect water heater.
 
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Old 10-27-14, 03:32 PM
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OK, so you good to go now?

Understand the drawings?
 
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Old 10-27-14, 03:52 PM
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Thanks a lot NJ Trooper. I am going to try this tonight and update you once I have the boiler running.
 
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Old 10-30-14, 09:39 PM
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Ok. So I wired it according to the diagram and after the boiler runs through its cycling process the circulator constantly runs. The zone valve doesnt open when the thermostat calls for either. Do you have any suggestions NJ Trooper?
 
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Old 10-31-14, 09:35 AM
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Do you own and know how to use a multimeter?
 
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Old 10-31-14, 03:02 PM
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Yes I own a multimeter and know how to use it.
 
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Old 10-31-14, 04:01 PM
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OK then, here's what I'd like you to do.

Disconnect the red wires from the zone valves to the thermostat input at the boiler.

Make sure the wires aren't touching and turn on the boiler.

Does the pump still run?

Take a look inside the junction box and make sure that you've connected the pump to the proper wires... WHITE (NEUTRAL) and YELLOW (HOT).


Set your meter to read AC volts and when a thermostat is calling for heat, measure the voltage at the yellow wires into the valve. You should see 24 VAC there. You should hear the valve open when you turn thermostat up.

If you have nothing there, go to the transformer and verify that you have 24 VAC there all the time.

If you have 24VAC at the transformer, and nothing at the yellow wires when thermostat is calling for heat, check your wiring again...
 
 

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