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  1. Replies
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    BelleMech, I am trying to get a hold of you......

    BelleMech, I am trying to get a hold of you... check your emails
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    Will do

    Will do
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    Thanks for the link... I do have an older model...

    Thanks for the link... I do have an older model (DV-85)... Maybe I can use this anyhow... I will give it a shot
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    owner manual/PDF's for JB DV-85 Pump

    I recently picked up this pump for cheap, but don't have a manual or any info on the pump maintenance, oil to be used etc. Anyone have that on file they could get to me? I would greatly appreciate it...
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    I am interested... I will email you

    I am interested... I will email you
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    Thank you... I will check that forum out for sure.

    Thank you... I will check that forum out for sure.
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    Fan motor doesn't have any wiggle... it is aged,...

    Fan motor doesn't have any wiggle... it is aged, but not bad... Has some rust on it...

    Contactor is new, looks to have been replaced recently... I will check it anyway...

    Wiring looks good, no...
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    its amazing how things happen all at once......

    its amazing how things happen all at once... THanks again for everyone who responded to the thread
  9. Replies
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    Yeah, pulled the cap and it's shot... Easy fix

    Yeah, pulled the cap and it's shot... Easy fix
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    well... new twist to the story... the condensing...

    well... new twist to the story... the condensing unit fan is now stationary and the liquid line is very hot... what are the chances that the condensing unit fan locked up... its late now here and its...
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    sounds good... I will do that... thanks for the...

    sounds good... I will do that... thanks for the recommendation
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    Thanks again for all the insight... I'm just...

    Thanks again for all the insight... I'm just getting started but plan on learning from this page as a great resource. I'll add some refrigerant and see how the unit performance changes.
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    Evaporator coil ;)

    Evaporator coil ;)
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    Indoor temp is 78F, will have to measure wet...

    Indoor temp is 78F, will have to measure wet bulb. The consensing unit is a piston unit. This is an original split on a ranch that had the basement finished recently.
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    ok... I went back and tested it one more time.....

    ok... I went back and tested it one more time.. here is what I ended up with

    Suction Line Temperature ~ 60F
    Suction Pressure - 83 PSI
    Liquid Line Temp - 96F
    Discharge Pressure 202psi...
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    thank you... that makes sense

    thank you... that makes sense
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    Your refrigerant is a liquid

    Your refrigerant is a liquid
  18. Replies
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    greater subcooling means that you you are below...

    greater subcooling means that you you are below the saturation temp by so many degrees... waht this means is that the refrigerant can absorb more energy before it starts to evaporate... If you have...
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    Yes I do, but I'm driving so I am going to have...

    Yes I do, but I'm driving so I am going to have to do this after bit
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    ?

    ?
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    Greater subcooling

    Greater subcooling
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    how so? It has to do with the heat absorbed by...

    how so? It has to do with the heat absorbed by the refrigerant and the vapor pressure of the refrigerant coming back to the compressor... Guess I am a little lost as to what you are looking for here...
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    this was from the manufacturer's information......

    this was from the manufacturer's information... suction pressure will drop on the suction side when you add refrigerant since you have more refrigerant to absorb heat... since there is more...
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    I keep mixing my lines up, and it came out in the...

    I keep mixing my lines up, and it came out in the form of subcooling/superheat confusion... yes, I have about 12F of superheat coming into the compressor via the suction line... the liquid line has...
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    sorry for the confusion.. yes that is correct, I...

    sorry for the confusion.. yes that is correct, I have about 12F of superheat and a couple degrees of subcooling, at best.. I had to run to grab some parts for another job, but will re-measure in a...
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    I edited the quote to include the requested...

    I edited the quote to include the requested information

    Also, if my suction line pressure is 92psi and my saturation temp is about 57F. If my suction line temperature is 69F, doesn't that mean I...
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    I'll get to a laptop quick and fill that out..

    I'll get to a laptop quick and fill that out..
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    R22 is the refrigerant

    R22 is the refrigerant
  29. Replies
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    no superheat, no subcooling

    Here is the situation... Design pressures are 150/300psi with 12 degree subcooling...

    Actual conditions are 92Psi liquid at a temperature of 69F. High pressure side is at around 220Psi and about...
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    I figured it was worth a shot anyway.. you never...

    I figured it was worth a shot anyway.. you never know.. i'll keep searching
  31. Replies
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    I am in the same situation as the oringinal...

    I am in the same situation as the oringinal poster.. I am in the market for tools... I don't need brand new at this time... Let me know what you have available... I can put my email address in my...
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    I second that.. is this still available?:bump:

    I second that.. is this still available?:bump:
  33. Replies
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    Yeah, when they say 'fresh-air' they mean...

    Yeah, when they say 'fresh-air' they mean filtered clean air, not air changes. If this actually gave fresh air changes, don't you think the international, uniform codes would have adopted it? This...
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    Yeah, I stopped by their booth at the ASHRAE expo...

    Yeah, I stopped by their booth at the ASHRAE expo and was impressed with what I saw. It is a nice product.
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    well, I have a call into the manufacturer... for...

    well, I have a call into the manufacturer... for future reference, I am not sure if it is ok, but the unit is UL listed... I will post back up when I hear back
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    Fresh-Aire UV APCO kit

    Anyone have experience installing one of these? I have been asked to install this for a client and it seems straight forward. What I am hesitating about is the secondary light that goes with the...
  37. depending on windows are installed right now, the...

    depending on windows are installed right now, the windows could make a huge difference
  38. All im saying is that the R value is the oppsite...

    All im saying is that the R value is the oppsite side of the coin from the U value... Either gives a specification on what the window is capable of
  39. The R value is just the inverse of the U value so...

    The R value is just the inverse of the U value so whats the difference?

    Having an air gap is better than no air gap at all... Yes there is a difference between air and a more dense gas but having...
  40. I plan on replacing my old double pane wood...

    I plan on replacing my old double pane wood windows with a double pane low e window very soon... I have a couple southwest facing windows.. so it will make a large difference
  41. yeah, Have to look at the R values and solar load...

    yeah, Have to look at the R values and solar load that each window takes... Single pain windows are very inefficient

    Maybe Manual J is considering the air gap between the two windows to be greater...
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    Don't stack them one on top of the other for...

    Don't stack them one on top of the other for sure... that would create too much static drop and could really hurt the performance of your system... I would just go with the regular size filter....
    ...
  43. If the ductwork looks like it is sized correctly,...

    If the ductwork looks like it is sized correctly, look at the room and what they are using it for... do they have a lot of electronics etc... check the windows and see if they are in good shape
  44. biggest loads of a building are windows...

    biggest loads of a building are windows typically, unless you are designing for a kitchen etc... Windows in a home will make a large difference on your load
  45. what percentage of the roof is covered by panels?...

    what percentage of the roof is covered by panels? I wouldn't adjust it unless its a large percentage... could consider that square footage of the roof as shaded since it doesn't see direct sunlight
  46. you need to get a performance chart or fan curve...

    you need to get a performance chart or fan curve for the fan you have... that will show why you get a drop in SP when you increase the CFM... increase in CFM increases the dynamic pressure, but may...
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    what are your utility rates? I could have a load...

    what are your utility rates? I could have a load ran to see what your peak heating demand is and at what ambient temp... the trane heat pump might be able to output what you need without much...
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    to me it looks like the return is sized for a 2.5...

    to me it looks like the return is sized for a 2.5 ton system and the supply is sized for a 1.5ton system... the sizing is inconsistent from supply to return
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    very common

    very common
  50. agreed... you need an adequate pump and need to...

    agreed... you need an adequate pump and need to make sure your final run in equivalent feet of head doesn't exceed the head produced by the pump
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