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Type: Posts; User: indoorcomfrtsl

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  1. Replies
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    Trane Rtu

    I am working with a Trane Rtu M/N YCH150C4LOAB..S/N L06104. Customer wants to replace the zone sensor with a programmable thermostat.The existing sensor is a BAYSEN008B. I have no wiring diagram so I...
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    I added 1# R22 which brought the superheat closer...

    I added 1# R22 which brought the superheat closer to 12. My discharge pressure fell inline with the entering cond water temp. i am having the maintenance clean the evap coil as it does have some...
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    going back tues. going to check the water flow...

    going back tues. going to check the water flow thru condenser then perhaps add a little refrigerant. the evap almost seems to be starving a bit.
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    I found out comdenser water temp rise should be...

    I found out comdenser water temp rise should be 10 to 14..so i think with high subcooling and high superheat it may be a txv or metering device as it looks like a fixed orfice.
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    Water source heat pump

    I have a McQuay heat pump M/N CCH120AETS. The compressor seems to intermitently shut down and not restart until the power is reset. When i went out I found the following>>>suction 70# discharge...
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    I have previously blown out the condenser coil...

    I have previously blown out the condenser coil but it probably could use more. I charged it as a liquid. yes the hot gas condensate evap. I am just not sure what proper operating temp pressures...
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    70 to 75. the discharge air of the condenser...

    70 to 75. the discharge air of the condenser seems to be recycling because of the low ceiling tiles.
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    on top of the case

    on top of the case
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    Walk in freezer

    I have a Polar Pak system that had a refrigerant leak and went flat. The leak was on the bottom of the 3/8 loop that sits in the drain pan. After repairing it I started to charge the system. It...
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    Yes it has a sight glass. It is also 14 degrees...

    Yes it has a sight glass. It is also 14 degrees outside. On amother note it seems someone put a 6" pulley on the blower motor. I can't get the amps right so I am wondering if the pulley size is wrong.
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    986

    Leibert refrigerant charge

    I have a Challenger 3000 M/N Bu06---CAM (middle part of # missing) The condenser M/N is CSF083-P. Is there any information on the factory refrigerant charge? When the hot gas by pass valve is...
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    Fulton Boiler lockout code

    I am working on a Fulton Vantage Boiler. M/N VTG-3000. The boiler has been locking out requiring a manual restart. The code on the seimens control says -Fan contactor Fan contactor is off. It is...
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    The heat exchanger has a leak at the...

    The heat exchanger has a leak at the header,allowing domestic hot water to enter the combustion side. Once the burner would light it would flash the water to vapor causing the calcium left in the...
  14. If you look inside a ball valve you will see that...

    If you look inside a ball valve you will see that the size is smaller. You can order full port valves for minimal restriction.
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    Its the worst I have seen also..I brushed it out...

    Its the worst I have seen also..I brushed it out and then hosed it out and used CLR to clean..then found the leak.
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    Heat exchanger corrosion

    http://i804.photobucket.com/albums/yy322/stevesexplorer/jaylot/Jaylot-1.jpg

    I also found a water leak at the top header of the exchanger.
  17. Replies
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    Boiler Heat exchanger corrosion

    I have a Munchkin Boiler M/N 399VWHASMEP. Inside the heat exchanger I found an excessive amount of white corrosion. I will try and put a picture up.
    I believe it is electrylosis. How do I prove it...
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    992

    The heat exchanger is a steam tube bundle,do not...

    The heat exchanger is a steam tube bundle,do not know the capacity ,yet. I installed tees on the pumps to get pressures. I did find out engineers design stogage tanks with the assumption that at 800...
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    Storage Tanks

    I have 3- 3300 gallon domestic hot water storage tanks that i am trying to heat and maintain temps of 140. I am trying to estimate how many btu's it will need. I am using 3 steam boilers rated at 4...
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    Uline Ice Maker

    Does anyone have a link or info on a under the counter ice maker? It's an Uline M/N ULN75R-00. I am pretty sure its a discontinued model so any info would be great. I have 3 of them that are not...
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    I see where I made my mistake with the 408 and Hp...

    I see where I made my mistake with the 408 and Hp 80
  22. Replies
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    I am not sure it is low yet. I am working on two...

    I am not sure it is low yet. I am working on two different systems. The one that I think is low also has 2 of 4 evap fan motors failed. I can't check the charge until the motors are replaced. I found...
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    I will add 408A. I was looking at a alternative...

    I will add 408A. I was looking at a alternative refrigerants chart and saw that R402 and R408 looked similiar.After looking at the composition of refrigerant blends chart am I correct in seeing that...
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    Refrigerants

    If a system has been charged with 408A can I add HP80 if the charge is low?
    If the compressor is marked 408A and the txv is marked 502 is this a problem or are they compatable?
  25. Replies
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    Motor Grease

    I have a US Motors motor M/N H60P2 B S. It is a 60 hp motor that is used as our chilled water pump. It runs 24/7 and is classified as a hostile duty motor.
    It has grease fittings but I am not sure...
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    I did not include elbows!! The line set has 5 -...

    I did not include elbows!! The line set has 5 - 90 deg. elbows. How much do I add per elbow? The Lee Temp Reciever sight glass on the lower and upper does not show a level.The cooling is running but...
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    Leibert Refrigerant Charge

    I am looking for the total refrigerant charge on a Leibert Challenger.
    M/N BF067A-AAM
    Condenser M/N PB280A-A
    Line set 7/8 and 5/8 78ft long with an 8' lift.
    Is it common with these condenser...
  28. Replies
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    Sorry>> R22

    Sorry>> R22
  29. Replies
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    Heat pump Txv

    We have a customer that has an Ameristar Heat pump. Outdoor M/N 2A6B0024A1000AB Indoor air handler M/N TWG025A140B1. This is installed in a condo with the air handler on the 5th floor and the...
  30. Replies
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    You were checking this on a 95 degree day? 90...

    You were checking this on a 95 degree day? 90 head and 48 suction seem low. is the evap frozen?
  31. Replies
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    I just had a alco txv that I could not get...

    I just had a alco txv that I could not get adjusted..replaced the power head and have the inner parts ordered. ( they have a name just can't think of it) It was also old..could not get any adjustment...
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    I do not think the txv has been adjusted. Will...

    I do not think the txv has been adjusted. Will have to get the model of the condenser, and it does not have any dampers. The compressor comes in on tues but i will check everything listed on here...
  33. Replies
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    The outside temp was around 78. This setup is...

    The outside temp was around 78. This setup is kind of unique, the condensers sit inside the building with a tunnel for air intake and a seperate for discharge. They have prefilters which get changed...
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    I want to say return was about 72 -74. When it...

    I want to say return was about 72 -74. When it pumps down it went fairly quick. I thought it was high also,especially the superheat. I thought that subcooling was more important on leiberts.
  35. Replies
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    The difference in temp before the hot gas bypass...

    The difference in temp before the hot gas bypass and after seemed to indicate it was closed. Compressor failed again that night,new one on order. I will check the hot gas bypass though,just to be...
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    Leibert compressor

    I am working on a Leibert M/N BF067A-AAM with a scroll compressor. Copeland M/N ZR61K3TFD it was mfg in 96. When I got to the unit the compressor was off on internal overload and the top was very...
  37. Thread: gaskets

    by indoorcomfrtsl
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    1,873

    second the motion for loctite>

    second the motion for loctite>
  38. Replies
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    The breaker will trip before the fuse will blow...

    The breaker will trip before the fuse will blow on a dead short. I would personally size the fuse for what they call for.
  39. Is the condenser coil a single coil or a dual...

    Is the condenser coil a single coil or a dual coil ?
  40. Replies
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    Suction was close to head . Does this happen...

    Suction was close to head .
    Does this happen often?
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    Does the compressor run at all during this time?...

    Does the compressor run at all during this time? That could explain alot. Any thoughts as to the cause of a sticking relief?
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    I would agree it might have been an overcharge...

    I would agree it might have been an overcharge but the head stayed at 135#. The system sat @ 100 psi head and suction without running. Once I powered it up then it would drop to 0 psi. I was thinking...
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    Scroll Compressor

    I was working on a carrier 50tm028 that had a failed compressor. I replaced it with the exact compressor which was a copeland scroll. ZR144KCTFD950.
    I weighed in the charge to mfgs specs. Upon...
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    Thanks

    Thanks
  45. Replies
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    Interesting, the chiller was off on low oil...

    Interesting, the chiller was off on low oil pressure but when I took my readings it was about 23 psid. There was also a power interupption,not enough to shut it down though.
    The filter does need to...
  46. Replies
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    600

    Oil Pressure

    Was wondering what the oil pressure drop across a compressor oil filter on a Trane RTHA 180 should be.
    Thanks
  47. Replies
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    I have yet to go back to work on this chiller,but...

    I have yet to go back to work on this chiller,but was in the building so I checked to see if the purge is connected to the same relief pipe as the rupture disc..it is. So tomorrow I thought I would...
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    Chillerwisperer I am new to working on these...

    Chillerwisperer I am new to working on these machines but we have a newer Trane ch530 centravac I have done some work on. That being said I am all in favor of throwing up the " I Need Help flag". I...
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    slb8101 you bring up a very good point with the...

    slb8101 you bring up a very good point with the purge exhaust vent. I will look at that in the morning. The chilled water valves were off for a couple of weeks, but I don't think when they got open...
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    Rupture Disc Failure

    I am working on a Trane Centravac M/N CV-73. This machine has not run in 3 yrs that I know of. I had to replace the purge unit with another one on site. I let the purge run overnight and it brought...
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