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Type: Posts; User: rundawg

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    40 - 4 tons (nominal)

    40 - 4 tons (nominal)
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    I did come across a 507C090 coil, and it is a...

    I did come across a 507C090 coil, and it is a 90,000 btuh coil.

    Maybe that is it?
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    The only thing that model number (707C) brings...

    The only thing that model number (707C) brings up, is a Package unit.

    Are you 100% sure it is correct?
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    Yes, you do the winding test like any other...

    Yes, you do the winding test like any other compressor.

    Check your email.
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    You have a Bristol TS (Twin Single) compressor...

    You have a Bristol TS (Twin Single) compressor that switches the start and run windings to reverse the rotation of the compressor and shift between High and Low stages.

    Seeing as this is an “OPEN”...
  6. Thread: Bryant 925t

    by rundawg
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    Depending on which install manual you are...

    Depending on which install manual you are referring to, the verbiage on Page 41 (under Direct Vent /2-Pipe System) has changed as of 11/2013. The following information was added:

    Combustion-air...
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    Check your email.

    Check your email.
  8. Replies
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    449

    It's a 25+5 mfd. If you update your email...

    It's a 25+5 mfd.

    If you update your email address, I will send you the parts list.
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    Check your email.

    Check your email.
  10. Replies
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    419

    I emailed you the IOM which has some limited...

    I emailed you the IOM which has some limited troubleshooting info. You can review it while you are waiting out the rain.
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    Are you in need of the service facts on this unit?

    Are you in need of the service facts on this unit?
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    2.5 tons is correct. Manufactured March 1970. ...

    2.5 tons is correct. Manufactured March 1970.

    Do as others have said, and size the new unit based on a proper heat load calculation, or you might not be happy with the results.
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    Because this is an “OPEN” forum, I don’t think...

    Because this is an “OPEN” forum, I don’t think anyone will tell you to go with a specific orifice and manifold pressure based on a chart. Your Interpolation skills are as good as ours.

    I...
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    The references I have on this coil state it is a...

    The references I have on this coil state it is a 4 ton.

    The digits in the model number varied on these old coils from 48-53, all were 4 ton coils.
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    Using a Pitot tube in residential applications is...

    Using a Pitot tube in residential applications is difficult. To get accurate readings, the traverse cannot be taken in turbulent air streams. The Pitot tube should be inserted at least 8-1/2 duct...
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    At this stage (3 valves later), I would be...

    At this stage (3 valves later), I would be looking elsewhere for the problem.

    My first question is - what other troubleshooting have you done?

    Some of these might seem like dumb questions, but...
  17. Thread: Amana asx

    by rundawg
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    134

    The 147oz is correct. Do as jrbenny stated,...

    The 147oz is correct.

    Do as jrbenny stated, with the subcooling high and superheat low, adjust TXV valve to 7 to 9 ºF superheat and remove charge to lower the subcooling to 7 to 9 ºF.

    If you...
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    I think the difference in efficiency and SEER...

    I think the difference in efficiency and SEER would be non measurable. As a general rule, you would find worse efficiency losses because of poor airflow issues (high duct static) and duct leakage.
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    So is that a good email address in your profile?...

    So is that a good email address in your profile?

    You should apply for "PRO" membership if you haven't already done so.
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    1% capacity loss max.

    1% capacity loss max.
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    Check your email.

    Check your email.
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    Sounds like you have one of those Bristol TS...

    Sounds like you have one of those Bristol TS (twin single) compressors from a 38YDB, 38TDB, 25HNA6, or 24ANA7 unit.

    These units only activate one contactor at time. It reverses the start and run...
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    Send me an email (address is in my profile), and...

    Send me an email (address is in my profile), and I will send you the long line set guidelines from a few manufactures that list the capacity losses.

    Also, put an email address in your profile so...
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    I’m sure you already know this, but you should...

    I’m sure you already know this, but you should size this unit by a Heat Load Calculation on the home, and not by the model number of the unit.

    With that said, I would take a guess around 4, maybe...
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    Manual D shows the equivalent length for all...

    Manual D shows the equivalent length for all fittings. A square to round transition off the plenum has an equivalent length of 10 feet, and a straight round pipe off the plenum has an equivalent...
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