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Type: Posts; User: BRTman

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  1. Replies
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    That unit will handle up to 3.5 ton's cooling....

    That unit will handle up to 3.5 ton's cooling. The 42 is the cooling BTU capacity and the 60 is the heating.
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    Yes

    Yes
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    Ya can't tell if a system is properly charged...

    Ya can't tell if a system is properly charged just by checking the delta T across the coil. Man, that bugs me when techs say that. He needs to check the subcooling. If the ODU is also a Carrier, the...
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    If it's just routine light dirt, there are some...

    If it's just routine light dirt, there are some self rinsing cleaners you can hit with a pump sprayer afterwards. But not effective for heavey cleaning and pennies from heaven. :cool:
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    You don't mention what kind of metering device it...

    You don't mention what kind of metering device it is. If it's a TXV and installed correctly, then it's not usually normal. There are several types of TXV's used. A HSO or hard shut off shuts down...
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    He said the dampers do go back to min position...

    He said the dampers do go back to min position though so I doubt that's the issue.
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    Is this a direct coupled motor or linkeag. We...

    Is this a direct coupled motor or linkeag. We we're thinking maybe the linkeage could be 180 degrees off? Is the free cooling light on or off when it's running this way?
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    Thanks. I haven't seen this version.

    Thanks. I haven't seen this version.
  9. The FE4 is specifically designed for use with the...

    The FE4 is specifically designed for use with the Evolution control and will not work with a standard type 24vac signal stat. It does have a regular terminal strip with normal terminal...
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    Check reistance of both discharge temp sensor and...

    Check reistance of both discharge temp sensor and the dry bulb sensor. You can find the TS guides at Honeywells literature site. You will find a resistance chart for them there. I use catalog #...
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    May be cap tube metering. Not a good idea. Don't...

    May be cap tube metering. Not a good idea. Don't be cheap, replace it now or pay more later.
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    You are correct except parts, which are 5 years...

    You are correct except parts, which are 5 years across the board. That is standard factory warranty for all residential equipment.
  13. Motoguy, -20 is on a mild day here. -30 to -60...

    Motoguy,
    -20 is on a mild day here. -30 to -60 has been recorded farther north. Throw a little wind in with it and you get a nice balmy -50 below wind chill. Fun working on RTU's. Freezes skin in...
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    In simple terms, adding about another 100...

    In simple terms, adding about another 100 equivelent feet of ducting.
  15. Let me clarify. If you have a leaky house, no...

    Let me clarify. If you have a leaky house, no amount of humidity will help that. If your house is running a negative pressure, you will have more infiltration which may be caused by bigger problems...
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    Normally you figure out of 1 ton of cooling. 8500...

    Normally you figure out of 1 ton of cooling. 8500 is sensible BTU's. The rest is latent.
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    Wasn't sure. Not my brand so am not familiar with...

    Wasn't sure. Not my brand so am not familiar with their model numbers.
  18. I am from your area so I feel your...well,...

    I am from your area so I feel your...well, frozeness and dryness!
    Two stage equipment is a good choice here because we size systems in Minneapolis area for -20 below. Thank god it's not that all the...
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    If it is a reciprocating compressor (oval...

    If it is a reciprocating compressor (oval shaped), it may be an internal motor mount spring that broke or is getting weak. It will eventually get worse and fail. If it is a scroll compressor (tall...
  20. Thread: brazing lines

    by BRTman
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    1,934

    Brazing

    Attached is an article I wrote for some trade magazines. Hope this helps.
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    I am not familiar with Tran's control functions...

    I am not familiar with Tran's control functions but like our equipment it may have some dehumidification feature that will cycle the a/c on and off without a cooling call to control humidity. Usually...
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    You are all missing the obvious here. This looks...

    You are all missing the obvious here. This looks like a classic case of oversizing the vent pipes. What is the model of the Bryant furnace? If it is a 312A or 315A it is a 2 stage unit. 310A and 311A...
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    Motoguy is right. You need to evaluate the duct...

    Motoguy is right. You need to evaluate the duct system and make some changes to reduce static. Turning vanes, larger ducting, etc. The blower does not make air, CFM is directly related to, duct area...
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    The combo you have is fine as fas as operating...

    The combo you have is fine as fas as operating together. The 124 is a single stage unit. Many manufacturers use other brand coils because they are not regulated as close as maufacturers combos and...
  25. Thread: R-410A LEAK

    by BRTman
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    7,394

    I agree with using nitrogen with a refrigerant...

    I agree with using nitrogen with a refrigerant tracer to pinpoint the leak when needed but many systems are not flat when you arrive. With the price of refrigerant, it makes sense to preserve whats...
  26. Thread: R-410A LEAK

    by BRTman
    Replies
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    7,394

    We suggest after that to isolate the indoor coil...

    We suggest after that to isolate the indoor coil and lines by pumping down the system and closing off the outdoor units valves. Then pull the lines and indoor coil to 400 micron vacume and hold. If...
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