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Type: Posts; User: jim4237

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  1. Replies
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    368

    correct, convection.

    correct, convection.
  2. Replies
    3
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    368

    pellet stove air dsitribution

    Hey all. I am a long time commercial HVAC service guy and need some quality ideas on residential. My Girlfriends house has a pellet stove in finished basement. She has "Zero" air circulation into the...
  3. Replies
    4
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    1,682

    air circulation from pellet stove

    Hey all. I am a long time commercial HVAC service guy and need some quality ideas on residential. My Girlfriends house has a pellet stove in finished basement. She has "Zero" air circulation into...
  4. Replies
    4
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    1,897

    Liebert system 3 temp sensor

    Hey all. I was wondering if anyone has been told by Liebert that they have to order the control panel upgrade kit ( $3000) for the older type System 3's? My control board is working fine, but I...
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    4,539

    not true

    Hey npkr. I live in central mass and I'm going through this same program right now.. I could give you a ton of details if you want, but I'll limit it on here

    If you are an electric customer, or...
  6. Replies
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    3,612

    leaking carlyle service valve

    hey all. I have a 06D compressor in a liebert 20 ton unit. Its out of gas completely. The only problem I could find was possibly the discharge service valve leaking. It had oil on it, and was...
  7. Thread: adding glycol

    by jim4237
    Replies
    2
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    974

    adding glycol

    Hey all, quick question. What kind of pump do you use to add glycol to a closed loop condenser system. I just need something small that will pump against 20psi ( give or take). Something at...
  8. Replies
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    3,811

    short

    I was testing fire alarms and it shunt tripped the hvac units. After resetting breakers I noticed it was getting hot in space. The contactor on compressor 1 was fried; burnt wires, etc. I replaced...
  9. Replies
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    3,811

    leibert 20 ton unit shorted to ground

    Hey all. I can't believe I'm asking this, but I just want to make sure. I have a Carlyle compressor in a Leibert 20 ton unit. Blown contactor and fuses. I've got correct Ohms between legs, but I...
  10. Replies
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    1,114

    liebert

    my SH is about 60deg. not sure on SC. my oil is about 1/8th at the most. suction pressure is 50psi and about 80 degrees. have to check on HGBP. thanks
  11. Replies
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    1,114

    leibert 20 ton compressor

    Hey all. Ive got a 20 ton Leibert with Carlyle compressor 06D. had an oil leak from oil fill port. oil is definitely low, but operational. refrigerant is 225-250high, and 50 low, but the suction...
  12. Replies
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    2,149

    I will be looking more into the problem this...

    I will be looking more into the problem this week. I'll keep you posted. thanks for the insight..
  13. Replies
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    2,149

    See, thats the problem with the sheaves. If they...

    See, thats the problem with the sheaves. If they were the same as the pulley, then you could align from the outside edge, but these lieberts use adjustable sheaves, and they could be wider than the...
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    2,149

    OH, and Low side gets almost to the point of...

    OH, and Low side gets almost to the point of cutout, but at that point Head is about 360, and trips.
  15. Replies
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    2,149

    thanks for the help. this is a water cooled...

    thanks for the help. this is a water cooled condenser inside the unit with dry cooler on roof. this unit is about 10 years old. all of our units are remotely monitored, so If this was happening...
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    2,149

    20 ton Leibert system 3

    problem #1.....2 stage, unit. runs fine on both stages, but when stage #2 ( bottom) cycles off and goes into pumpdown, it takes about 1 minute at least ( should only take about 15 seconds), and...
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    filter is fine. the trap is on the negative side...

    filter is fine. the trap is on the negative side of the fan. ive had a problem in the past with the traps. ive got about 100 of these in this building and I've had to re-design a few already. ...
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    fan coil unit condensate trap design

    does anyone have information to "properly" size a positive and negative fan condensate trap. I've got a couple units that don't drain properly and they are on the negative side of the fan. the trap...
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    ductless calculations

    hey all. I'm a commercial guy trying to help a neighbor. no room for ductwork so we are going fujitsu ductless. his house (multifamily) is the first floor. Its only 626 sq/ft. Unfortunately the...
  20. Thread: r22 superheat

    by jim4237
    Replies
    7
    Views
    1,968

    r22 superheat

    Hey all. Does anyone know the correct superheat for an R22 walk-in copeland refrigerator.
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