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  1. Replies
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    Solar Water Heating - Heat Pump System

    Hey guys,

    I am looking at home that has an older solar hot water heating system on it. To be honest, I am not sure if it is closed loop or open. I am going to find out here shortly. Does anyone...
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    Thanks guys for your information. Please keep...

    Thanks guys for your information. Please keep posting if you have more to add. I'm sure I'm not the only one benefiting from this threads Thanks again
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    Wow I don't think this video could have explained...

    Wow I don't think this video could have explained it any better.
  4. Thread: on call

    by tanksboard
    Replies
    134
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    12,587

    Have you considered seeing your doctor or a...

    Have you considered seeing your doctor or a specialist about your anxiety? You don't have to live with crazy uncontrollable anxiety. Modern medicine has come a long way in treating it. Just my two...
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    This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
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    Yeah I was always under the limited understanding...

    Yeah I was always under the limited understanding that digital scroll compressors run off of some sort of VFD technology.

    Good call on the Emerson site too. They have good animations of the...
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    haha well that is always a good solution!

    haha well that is always a good solution!
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    LOL. Ask the person that has to stand under the...

    LOL. Ask the person that has to stand under the diffuser when it is 0 degrees outside. They may beg to differ.
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    Slightly tempering MUA is usually always your...

    Slightly tempering MUA is usually always your best bet. Most people don't want 0 degree air entering their kitchen. The cheapest solution for heating is a Direct fired heater. For the summer, it...
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    I would also check any mixing boxes or...

    I would also check any mixing boxes or economizers. They might all be at 100 recirc, and the system requires more outside air. If they pulling in outside air, you may need to look into speeding up...
  11. Thread: RTU 100% OA

    by tanksboard
    Replies
    5
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    666

    I've found a lot of restaurants running 100% OA...

    I've found a lot of restaurants running 100% OA to help balance the building. Is this the case?
  12. Replies
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    Gravity, Thank you for the response. I...

    Gravity,

    Thank you for the response. I understand the very basic idea of what you told me. Do you know of any way that I could get a more detailed description? I'm trying to understand the...
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    Digital Scroll Compressors

    Hey guys,

    I am just starting to do my homework on how digital scroll compressors work in a cooling system. What are the ranges that a digital scroll can provide? Do they modulate using a VFD? What...
  14. This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
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    I appreciate all of your guys feedback on this....

    I appreciate all of your guys feedback on this. It has opened many ideas as to how to approach this. As always, I still appreciate any input that anyone is willing to offer! Thanks again guys.
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    Bump. I've heard it called Smart Recovery also.

    Bump. I've heard it called Smart Recovery also.
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    Adaptive Intelligent Recovery PID Loop

    Hey Guys,

    I am trying to write a PID loop for an Adaptive Intelligent Recovery type system. I only know the basics of how the system works and I was hoping that someone could explain it to me. I...
  18. If the P trap and/or drain was messed up, could...

    If the P trap and/or drain was messed up, could it cause this?
  19. Lennox LGH072H4 Condensation Blowing into Ductwork

    Hey guys,

    I have a Lennox LGH072H4 RTU 6 ton. It has an economizer but it currently running at 100% return and it also has reheat. The problem I am having is that it is blowing condensation down...
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    Can anyone provide me with an example as to how...

    Can anyone provide me with an example as to how two PID loops would interface in a space discharge configuration? I would really appreciate the help.

    Thank you,
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    That was a great response. I am going to start...

    That was a great response. I am going to start working on the system tomorrow. I'm sure ill have more questions, as I've never used one PID to feed another. Could you give me a very rough example as...
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    Space Temp PID Loop

    Hello,

    I was hoping that someone could give some guidance in developing a PID loop for space conditioning. The units are indirect fired forced air heaters. I have the discharge PID loop running...
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