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  1. Replies
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    383

    Your exactly right, the return is under-sized....

    Your exactly right, the return is under-sized. The whole job was done incorrectly when the house was built just 5 years ago! Example: 4 ton system with 4 zones, on the supply side 1-14" flex duct for...
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    383

    Air Flow Question

    If your total static pressure is .75 at 1600 CFM. would there be any improvement if you lowered the blower to 1400 CFM.? I know the duct work is not adequate for the home and the expense to correct...
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    521

    Well "I" didn't solve the problem but had it done...

    Well "I" didn't solve the problem but had it done by a qualified technician. The return air was too restrictive so another filtered grill was added at the air handler to allow more air in. Then the...
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    Ruud 11 Seer Heat Pump Working!

    After learning more than I could ever imagine here on this forum I can say I am at peace with my inefficient 11 seer heat pump. The air flow problems have been fixed, the coil has been properly...
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    1,390

    My house lights used to dim every time the unit...

    My house lights used to dim every time the unit would come on. All the wiring was checked and a hard start kit was installed, the problem got a little bit better. Had the electric company come out...
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    A question about zones

    In a zoned system which would be more efficient 2 zones combined where your static pressure is lowered and the heat pump is satisfying 1 thermostat or 2 separate zones with a little higher static...
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    1,445

    Yes there is. Right now I'm putting my wife...

    Yes there is. Right now I'm putting my wife through nursing school and also raising 2 children. I will have to wait a little longer before I can enroll. I plan to though because I think there is a...
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    Thanks Beenthere. I've been told that it doesn't...

    Thanks Beenthere. I've been told that it doesn't matter what brand you have a heat pump is a heat pump. I guess with Ruud it does matter.
  9. Replies
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    Does this happen because it is fixed orifice and...

    Does this happen because it is fixed orifice and not TXV on the outside condenser? Would it be in my best interest to have the orifice replaced with a TXV?
    If someone could answer these few...
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    1,445

    I don't want to beat a dead horse here, I...

    I don't want to beat a dead horse here, I appreciate all of your expertise in helping me understand the operation of my heat pump. Just a few last questions. Do all heat pumps with accumulators act...
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    1,445

    Would it help to put heat tape on the...

    Would it help to put heat tape on the accumulator? When this pressure drops the supply temperature drops about 7 degrees at the same time, somewhat inefficient. Do I just live with it or is there...
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    Low Pressure = 20 Suction Temp = -2.5 High...

    Low Pressure = 20 Suction Temp = -2.5 High Pressure = 185.



    This is the lowest it gets before rebounding. If this is normal could someone explain why it does this, what actually is happening....
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    1,445

    The readings didn't format well for some reason...

    The readings didn't format well for some reason but those pressures and suction temps at start up are normal for Ruud heat pumps ?
  14. Replies
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    1,445

    Would this piston cause the suction line from the...

    Would this piston cause the suction line from the accumulator to frost up? I have been told that it is usually an airflow issue but this has been ruled out by tech when he was here last weekend. He...
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    1,445

    Could this give a false appearance of low air...

    Could this give a false appearance of low air flow ??
  16. Replies
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    1,445

    In heating mode I am told that the TXV would be...

    In heating mode I am told that the TXV would be "wide open" so in heating mode I guess it would affect it. The outside condenser only has a flowcheck and that is what I was told metered the...
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    I Have a Question about a Ruud Coil.

    Ruud's evaporator model RCBA has a Flowcheck piston. To convert to a TVX you are supposed to replace the piston with the piston included with the TXV. The TXV was packaged with a .157 piston size...
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    Look what my heat pump has done to me !

    I'm sorry Beenthere. I didn't mean to push the limits on DIY diagnostics. I would never try to replace a TXV. I was only looking for a second opinion before replacing one.
  19. Thread: Testing TXV

    by carlb7
    Replies
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    733

    Testing TXV

    So the TXV bulb is taken off the line and the cabnet is closed back up with the bulb on the outside dangling. Of course it is another 70 degree mild day. Here are the readings.
    High Pressure=165...
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    Question About TXV

    If you have a condenser that has a Fixed Orifice for metering refrigerant and a TXV at the indoor evaporator coil what type of system do you have? Would a service tech determine that it is a TXV...
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    Fixed Orifice or TXV When Charging.

    Which is the proper way to charge a Heat Pump when the condenser is a fixed orifice but there is a TXV at the evaporator. There is a chart for charging that looks like this.

    46322

    So is the...
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    It was a dirty air filter at the air handler. I...

    It was a dirty air filter at the air handler. I do need a better service company. Seriously thinking of going to school and taking the HVAC course.
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    Do you mean low air flow at the evaporator coil ?...

    Do you mean low air flow at the evaporator coil ? There are presently two return ducts, 1-17x17 and the other 15x15 feeding into a 20x25 opening at the bottom of the air handler. Pressures were taken...
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    Ruud Achiever Series

    I would appreciate it if you could tell me if all looks normal.

    Outdoor Temp= 73 degrees
    Indoor Wet Bulb= 65 degrees
    High Pressure= 155 psig
    Low Pressure= 55 psig
    Suction Line Temp= 37 degrees...
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    If 20"x25" is the proper size for 1600 cfm. would...

    If 20"x25" is the proper size for 1600 cfm. would the return be short by 210 sq" or in other words would it require an additional 14.5"x14.5" access? If this is not how it would be calculated??
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