Aquastat Wiring Help!!!!!!!!!!!
#1
11-05-14, 03:03 PM
Aquastat Wiring Help!!!!!!!!!!!
Hot water boiler needed new aquastat model number L6006A1145. Problem is I'm not sure how to wire it up. The old one had only 2 terminals which ran from the gas valve to the aquastat. One red and one white wire. Nothing will happen when I call for heat at the thermostat but if I jump R and W at the aquastat the burners come on. There is also a "B" terminal on the aquastat if that helps any. The thermostat is ran to a step down transformer, to a gas valve and to the aquastat. Here are a few pics.
Ronald Stahley voted this post useful.
#2
11-05-14, 03:22 PM
Welcome to the forums...
For reference here are the new aquastat instructions... I have not read them yet and have no time right now.
http://s3.supplyhouse.com/manuals/12..._PROD_FILE.pdf
Others will chime in soon...
Oh we dont see the pics... Can you repost them????
For reference here are the new aquastat instructions... I have not read them yet and have no time right now.
http://s3.supplyhouse.com/manuals/12..._PROD_FILE.pdf
Others will chime in soon...
Oh we dont see the pics... Can you repost them????
#4
11-05-14, 03:27 PM
I believe that aquastat is being used as a HIGH LIMIT control, is that correct?
If so, wire the two wires to the R and the B terminals. The aquastat BREAKS the R & B on a temperature rise to setpoint.
If so, wire the two wires to the R and the B terminals. The aquastat BREAKS the R & B on a temperature rise to setpoint.
#5
11-05-14, 03:42 PM
here are the pics
Here are 3 pics one of the aquastat, one of the transformer, and one of the gas valve
#6
11-05-14, 03:59 PM
Move the white wire to the B terminal.
And really? wires just twisted together and left bare? Seriously, spend a buck and buy some wire nuts, will ya please? That is really poor workmanship.
And really? wires just twisted together and left bare? Seriously, spend a buck and buy some wire nuts, will ya please? That is really poor workmanship.
#7
11-05-14, 04:12 PM
The wires were already like that. I know I need to put wire nuts on them. I am the 2nd tech on this boiler. This is not my workmanship.
#9
11-05-14, 04:18 PM
I am a certified HVAC service tech and installer. 8yrs doing this but never ran into this problem.
#12
11-05-14, 05:06 PM
I haven't tried it yet. Homeowner had to leave when I was working on it. I have to go back tomorrow and give it a try. What exactly is the "B" terminal doing?
#13
11-05-14, 05:16 PM
What exactly is the "B" terminal doing?
High-limit Controller shuts off burner when water
temperature exceeds high-limit setting. R-B contacts
make, and burner restarts when temperature drops to
high-limit setting minus the temperature differential.
High-limit Controller shuts off burner when water
temperature exceeds high-limit setting. R-B contacts
make, and burner restarts when temperature drops to
high-limit setting minus the temperature differential.
#14
11-05-14, 05:32 PM
What exactly is the "B" terminal doing?
ON TEMPERATURE RISE:
R - B BREAKS
R - W MAKES
R is the 'common' terminal, and that terminal is connected to B OR W (never both) depending on the water temperature.
When your water is BELOW the setpoint, R is connected to B.
When the water goes ABOVE the setpoint, R is DISconnected from B and CONNECTED to W.
#16
11-05-14, 07:12 PM
I get it now so the W terminal is just obsolete?
For example, if that aquastat were to be used to control a circulator pump so that it didn't turn on until say 120F ... you would use the R W terminals.
#17
11-05-14, 07:57 PM
OK now I understand 100%. I really do appreciate all the help. I'm going to take care of this tomorrow and I will surely give an update.
