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  1. Thread: EPA Dilemma

    by hvactech80
    Replies
    12
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    1,119

    EPA Dilemma

    We are experiencing issues with Allowing any Coil Cleaner to get to Storm Drains--Has anyone else ran in to this and what was your solution--Coils must be Cleaned--Thank you for any Assistance you...
  2. Replies
    16
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    1,423

    Electronic Micron Gauge

    The HVAC Shop has had Different Brands of Elecronic Micron Gauges but cannot Locate one that will last--Would anyone in the Field know of a Good Durable Accurate Electronic Micron Gauge that will...
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    2
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    692

    McQuay-ACZ020AC12-ER10-Failing

    We have a Library and the Admin section is cooled by a McQuay Split System--The outside unit is a McQuay-ACZ020AC12-ER10--Continually Failing on High Cond Press or MHP or High Motor Temp.
    The...
  4. McQuay--High Head Pressure--Fan Cycling

    We have numerous McQuay Commercial Condensing Units--The First Condenser fan comes on Immediately--The setting for the second fan is 290 PSIG--Why so High--Would it have anything to do with the...
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    414

    Preheat Coil Leaking

    Good Afternoon:
    Please submit this Question to the Engineers at Carrier on the MSAC---I have Tried HVAC Partners without success.
    We have a Carrier---39THGFLAA—3—AHK—AA Air Handling Unit with a...
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    3
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    669

    Superheat

    The Superheat is 20 Degrees --Subcooling 15 Degrees--Both Fans Running--RThanks.
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    3
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    669

    McQuay--AGZ--Pressure issues

    We have a 8 Year Old McQuay Split system and have had issues since install.
    The Condensing unit will fail on High Pressure if thev Hot Gas is connected and Low Evap Pressure if the Hot gas is...
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    8
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    963

    Grease and Removing Screws

    My Question involes large Motors that come from the factory with Screws in the Grease area--Should these be removed and install Grease fittings?
    I have been informed the factory will install...
  9. Three Phase Scrolls need to run in 1 certain...

    Three Phase Scrolls need to run in 1 certain Direction--Could be going the wrong way.
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    426

    Water Source Heat Pumps

    We have 45 Climatemaster-Genesis Version--3-5 Ton units with Dehumidification--Does anyone in the Field have this Type and if so--Please give the Pros and Cons--Thank You.
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    250

    Low Ambient Design

    This is a Design Question--Seems every Commercial Condenser has a Low Ambient Package with the 1st Fan as the Motormaster--Why not the 2nd Fan--I have heard it is to save time and Wire on Assembly??...
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    0
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    435

    Low Ambient Design Question

    :cheers:This is a Design Question--Seems every Commercial Condenser has a Low Ambient Package with the 1st Fan as the Motormaster--Why not the 2nd Fan--I have heard it is to save time and Wire on...
  13. Replies
    3
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    460

    Where is the Time Delay-1 Second

    We have a Carrier--38AKS--028---500 Condensing Unit--We do not have a Delay on the Part Start Contactors but Looking at the Carrier info--the 50 HZ units do have a Delay--Why would the 60HZ units...
  14. Replies
    5
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    1,668

    Thermistor Chart

    Where would be a Good place to look for a Resistance VS Temperature chart for Thermistors--We had a 3K Thermistor on a McQuay--AGZ Chiller with no Chart--it would be great to have a chart for...
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    515

    Copeland Temperature Recommendations

    I am attaching a Semi Hermetic Check Sheet--Years ago--Copeland had one like this with their Recommended Temps stamped in each Block on the Compressor--Would anyone know where I could find this...
  16. Replies
    3
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    1,013

    Thank You

    Thank you for the Site!!
  17. Replies
    3
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    1,013

    Rheem--RAWC-075CAS

    Would anyone know where I could find any Technical Lierature on a Eheem 7.5 Ton-Condensing Unit--RAWC-075CAS S/N-480G36920984--Thank you.:cliff:
  18. Replies
    1
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    1,471

    Carrier 30 HW Package Chiller-R22

    We have Replaced the Compressor in our 30 HW Chiller- and also the Safety Board--The Compressor is a 06E7299060---S/N-V 30021 28V27.
    The new Safety Board is a 30 GT --We have installed a Manual...
  19. Replies
    19
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    1,945

    Pump Alignment

    Where would be the best area to look in for getting Pump Alignment information on Large Centrifugal PUmps as the Series 1510 Sled--Chill Water for a 5 Story Building.
    These pumps have the Woods...
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    1
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    1,008

    AAON TRouble

    We have a AAON RN-040-3-0-DB04-2C4 S/N--200711-BNGV03199
    We are experiencing issues with Compressor 1--the capacity control is acting up--We are getting 4.9 volts to the board from Siemens...
  21. Replies
    1
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    1,511

    Bad Voltage Ratio Sensor

    We have a AGZ050AS27-ER10 S/N--STNU000600016----McQuay Chiller--R22--Scroll Compressors--1998----We continue to get Bad Voltage Ratio Sensor Shutdowns--Staunton Tech Support for McQuay...
  22. Replies
    5
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    3,680

    Readings on unit

    Just a couple--What is your Water Quality in the Loop--PH?
    What is your Total Superheat at the Compressor--Subcooling--What is the Max Temp you keep your Loop--Maximum Discharge Line Temp on the...
  23. Replies
    5
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    3,680

    Unit info

    Enercon 11
    M/N-ZCGHW060-4302
    S/N--6WK50027-00
    3 Phase 230V

    Thank you:couchhide: for any Help.
  24. Replies
    5
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    3,680

    Enercon 2 Water Source Heat Pump

    :couchhide:
    Would anyone know where to get info on the 1994 Version--Enercon 2--Water Source Heat Pumps--made by AAF---Service and Troubleshooting Manual would be nice--Thanks.
  25. Replies
    4
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    491

    Where are they now!!

    I am John West from Richmond,VA--I am attaching a Photo from a 1986 Class at RSES in Richmond,VA--Instructor--Buford Wade--if anyone Knows where these Techs are--Please update me--Names of Some--Sam...
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