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  1. Im not understanding (or maybe you're not...

    [/QUOTE]Im not understanding (or maybe you're not clear on the question)? I need to interlock the heater with a separate exhaust fan, so that if there is no air being exhausted the heater shuts...
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    I fought a problem like this with an aaon a...

    I fought a problem like this with an aaon a couple years ago. I ended up installing a few tattle tales on suspect devices like low/high pressure switches. In my case it ended up being a loose wire...
  3. I'm not sure exactly what type of heater you're...

    I'm not sure exactly what type of heater you're using, but I think you could look at pulling a signal right off the gas valve.
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    Oh YES! My favorite! Now that'll keep you busy...

    Oh YES! My favorite! Now that'll keep you busy for while.
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    Don't worry about it. Those were superceded to...

    Don't worry about it. Those were superceded to the new .10" rating months ago. Some of the old ones were .18" some were .15" they all get a .10" now.
  6. Thread: Trusteam!!!

    by dunkman
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    Why not 12 gallon units?

    Why not 12 gallon units?
  7. Try having 3 new Hydron units in the same job...

    Try having 3 new Hydron units in the same job that had bad reversing valves. They sent 3 new valves, all of which also failed within days. We had to build up sil-fos on the reversing valve pilot...
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    I've seen this happen when the wires going to the...

    I've seen this happen when the wires going to the economizer plug were squished between the blower housing and the top of the unit, rubbing through the common 24v wire. That'll make all the...
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    Ha! Aren't they all???

    Ha! Aren't they all???
  10. LIEBERTS! Why didn't somebody say that before?...

    LIEBERTS! Why didn't somebody say that before? Now I just feel silly. We have a bunch of those around here, none are ducted units though.

    Total of 15 tons, I wonder if you're short on capacity....
  11. Forgive me, I'm trying to understand. Do you mean...

    Forgive me, I'm trying to understand. Do you mean the sensor is in the exhaust of the servers, or by "exhaust ducts" do you mean the cold air supplies?

    BTW, what's a Challenger?
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    Thank you for this thread, it's been educational.

    Thank you for this thread, it's been educational.
  13. Actually the new cabinets are pretty tight. Also...

    Actually the new cabinets are pretty tight. Also insulated better than the old metal ones, less problems with condensation on the cabinet.
  14. So it senses the same temperature that operates...

    So it senses the same temperature that operates the cooling equipment.

    Where is the thermostat now?
  15. I would have the sensor next to the cooling...

    I would have the sensor next to the cooling thermostat.
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    All I've ever done with these systems is connect...

    All I've ever done with these systems is connect with hyperterminal through the N30 to manage settings, check sensors, etc. I wouldn't mind knowing how to fix program issues on the UNT controllers.
  17. You talking about a City Multi? Try a search on...

    You talking about a City Multi? Try a search on that.
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    I just checked with myself, and myself concurs...

    I just checked with myself, and myself concurs that i use the same manifold on everything. Just be sure to purge the liquid from your high side hose back into each system before removing.

    Then...
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    What does it do if you plug your hoses and hook...

    What does it do if you plug your hoses and hook it up to the vac pump?

    With both hi & lo side open pressure up with some nitrogen and watch to see if both transducers read the same as you fill it...
  20. Your tech needs to focus on the indoor blower...

    Your tech needs to focus on the indoor blower motor and low voltage wire connections .
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    Those numbers seem kindof weird, maybe get an...

    Those numbers seem kindof weird, maybe get an opinion from another meter? You should also check the CC heater to ground, if it has one. Also check each winding to ground.

    BTW to address your...
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    I would definately have a blower door test done...

    I would definately have a blower door test done on this house to see how leaky it is.
  23. It's a ball valve.

    It's a ball valve.
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    Maybe dirty? Or maybe it could possibly be...

    Maybe dirty?


    Or maybe it could possibly be slightly miss matched all to hell!
  25. 10 deg delta is too low on 1st stage. I wonder if...

    10 deg delta is too low on 1st stage. I wonder if your fan is set up right? WHen you set the stat to fan on, then put on 1st stage cooling, is there a difference in the fan speed? It should remain at...
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