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  1. Nu-Calgon liquid scale remover turns purple (Neutralizes) fast

    Never had this problem for Two years at the same site
    There is a very
    slight chance the tech performing the sealed Copper tube condenser cleaning with the
    Nu-Calgon scale remover .
    may not be...
  2. Nu-Calgon liquid scale remover turns purple (Neutralizes) fast

    Never had this problem for Two years at the same site
    There is a very
    slight chance the tech performing the sealed Copper tube condenser cleaning with the
    Nu-Calgon scale remover .
    may not be...
  3. configure the Honeywell S7760A. command Display

    does anyone have any literature
    for configuring the Honeywell
    S7760A Command Display.
    I am using Lonspec 05.01
    Thanks
  4. Temperature of Air when air balancing

    we often have air balance contractors
    balance our new sites minus compressors, and minus forced air heating ability
    Often because the condenser water system, or the heating plants are not yet...
  5. Replies
    0
    Views
    648

    i2867 Terminal Controller

    Continuim unitary controller ( i2867 Controller)
    I know that Andover's infinet network is Modbus on a RS-485 interface.
    I have a Siemens SITRANS F flow meter, with a three terminal Modbus card, ...
  6. Replies
    10
    Views
    1,759

    oBIX Open Building Information Xchange

    I probably have used systems that utilize it, it may be transparent.
    I briefly understand that it provides web services for
    direct digital control systems.
    I have John FX jace's that I can access...
  7. Replies
    3
    Views
    2,136

    Condenser water inline booster pumps

    I have a new site with a six story building.
    Water cooled units on each floor
    The Computer room A.C. (CRAC) units 2 - 3 tons each have
    Condenser water in line booster pumps coming off the main ...
  8. Replies
    12
    Views
    3,005

    sorry about that q= 500 x GPM x Water Delta T

    sorry about that

    q= 500 x GPM x Water Delta T
  9. Replies
    12
    Views
    3,005

    I am sure you know this already, but I have...

    I am sure you know this already, but
    I have seen (professionals),
    and simple guys such as myself
    get themselves in alot of trouble,especially when they were providing
    sub metering.
    Make sure...
  10. Replies
    4
    Views
    975

    As per the AOP Rules only Professional Members *...

    As per the AOP Rules only Professional Members * can reply with advice to the OP. Anyone may post and ask questions. They may even question the * member answer but not give advice or expand on the...
  11. Replies
    2
    Views
    861

    Two finn tube coils clog up

    I do not know if there is a technical name for it or if there is an engineering
    description of the cause of it.
    It appears that there will be a good deal of power washer time ahead for us.
    I...
  12. Replies
    1
    Views
    733

    Thinner tube walls on coils

    Copper Finned tube water coils use a thinner tube wall
    I gather this is to facilitate heat transfer.
    We have free cooling coils that have water pressures as
    high as 160 P.S.I.
    Besides being...
  13. Replies
    14
    Views
    954

    assuming your gauges are good , the pump is...

    assuming your gauges are good ,
    the pump is turning the right direction and
    you also measure amps with an amp probe.
    I have seen mechanical propblems with a pump , internal bypassing
    ,pump...
  14. Replies
    14
    Views
    2,499

    Demand response control is growing into a big...

    Demand response control is growing into a big industry.
    I would like to see a section here on this site.
    Benchmarking and sub metering is gradually becoming law
    in many parts of the country.
    It...
  15. Replies
    8
    Views
    2,820

    That is a tall order. I started controls with...

    That is a tall order.
    I started controls with all electromechanical logic.
    Years ago ,I had to make a control sequence of operation using
    relays ,contactors,solid state time delay relays,lock out...
  16. Replies
    2
    Views
    950

    Prouduct names and logos

    I noticed a case of this today,again ,at the Carrier supply house.

    I will see a Honeywell T-Stat with a carrier or even a Trane logo on it.
    Before Johnson purchased York,I would find JCI...
  17. Replies
    14
    Views
    1,794

    Excuse me for the mistake. Very sorry that is...

    Excuse me for the mistake.
    Very sorry that is what I get for reading only a couple of words of a post.
    Yes although I do not do much of the residential anymore
    (some very happy memories)
    we use...
  18. Replies
    14
    Views
    1,794

    I think it is over kill and may harm your...

    I think it is over kill and may harm your compressor

    For cooling and heating with a heat pump you still need
    that minimum C.F.M. of 1,200 400*3tons
    Run the fan too slow and you will slug...
  19. Replies
    2
    Views
    795

    Shut off #6 oil transfer pumps

    We are no longer usig the boilers for Summer, but maintenace still
    wants to run the two transfer pumps year round,24/7 ,
    to constantly keep
    the # 6 heating oil traveling through the...
  20. Replies
    1
    Views
    644

    Free cooling to the last drop

    Is this posible?
    can Cooling tower condenser water produce any cooling moving through a free cooling coil if the Condeser water is about five degrees lower than
    the Return Air Temperature?
    But,...
  21. Replies
    1
    Views
    843

    Technologic 5500 Pump controller

    I have a B&G Technologic 5500 Pump controller.
    It controls water Differential pressure by controling pump speed
    through the V.F.D.'s
    It is conected to a Kele differential pressure transmitter
    It...
  22. Anti corrosion inhibitor with Polymer

    Our chemical people are using an Anti corrosion inhibitor with a polymer
    They are emphasizing the point that
    it has "tags"
    that allow them to track the effectiveness of changes in the dosage.
    How...
  23. Replies
    5
    Views
    1,160

    I think this is what you are looking for

    I think this is what you are looking for
  24. Heat Timer Gold Short Cycles Boiler

    Sometimes The outdoor temperature reading keeps keeps bouncing up and down
    within one degree of the setpoint call for heat.
    The outdoor air temperature will equal the setpoint temperature for a a...
  25. Replies
    4
    Views
    534

    Heat Timer Gold Short cycles

    Sometimes The outdoor temperature reading keeps keeps bouncing up and down
    within one degree of the setpoint call for heat.
    The outdoor air temperature will equal the setpoint temperature for a a...
  26. Replies
    14
    Views
    1,068

    Thank you all.I changed the shutdown to coast,...

    Thank you all.I changed the shutdown to coast, since it is a fan.
    On a different note , is there any benefit to having a fan ramp down as opposed to
    a quick coast down stop?
  27. Replies
    32
    Views
    2,801

    I am not too keen with V.A.V's and DX units. I...

    I am not too keen with V.A.V's and DX units.
    I have inherited a couple compressor that failed do to excess liquid back to the compressor, every time there is low air flow over the Evap.

    I am...
  28. Replies
    14
    Views
    1,068

    VSD seriesdrive Over Voltage

    Eaton / Cutler hammer drive (V.F.D. ) locks out on Overvoltage alarm
    every time the two month old 20 H.P. de-celaerates off.
    There are no spikes in supply voltage.

    I f the motor is shut off...
  29. Replies
    34
    Views
    2,442

    This is great feedback. I am also concerned with...

    This is great feedback.
    I am also concerned with how this would affect everyday H.V.A.C .systems
    like Johnson and Andover?
    As far as the politics and Iran go.
    There is more than meets the eye....
  30. Replies
    34
    Views
    2,442

    Is s Stuxnet real

    We have quite a few sites that are accessed through the internet.
    The IT people have firewalls but they are usually minimum at best.
    All our dial up sites use the P.O.T.S., and I am sure the...
  31. Replies
    1
    Views
    451

    Project Builder does not run

    How do I run M-Tools Settings utility ?
    If I recall I have to specify a data base.
    All M-Tools components install and all run properly, but
    I can not find the M-Tools Settings utility.
    I even...
  32. Replies
    6
    Views
    934

    Got a call the other day.The present company is...

    Got a call the other day.The present company is going to replace it with an FX
    for an extremely low rate.Looks like a shipping and handling charge.
    Unfortuneately I found out that this problem...
  33. Replies
    6
    Views
    934

    This site is upgrading,and using my company, but...

    This site is upgrading,and using my company, but anyone who is familiar with facilities knows this does not happen in a couple of weeks.
    The present (Fortune 100) controls company did the...
  34. Replies
    6
    Views
    934

    Why N-30 Crashes

    What are some of the reasons to cause two N-30's to crash and reboot at least once a day.
    They are on an Ethernet network.
    There is some minimal control logic( Interlocks), on both of them.
    In one...
  35. To view a station off line on your PC, is a...

    To view a station off line on your PC, is a platform connection.You need
    the Workbench software tool.You cannot do offline viewing/editing with a web browser.
  36. Replies
    57
    Views
    4,427

    That is a shame.The compnies that do not pay the...

    That is a shame.The compnies that do not pay the techs well will see that alot.
    There is very little motivation for a tech to dive into controls, if the pay is low.
    The big companies , who have...
  37. Restricting user privilegesis is how I am doing...

    Restricting user privilegesis is how I am doing it, but I am losing some functionality.
    This is for Infinity 1 controllers.

    Does anyone know the factory Default Admin logon info for the...
  38. Andover Continuim Point Right Click

    I have a site with the Andover Continuim software
    we are using the Pinpoint UI.
    People are right clicking on numeric points , point editor opens up, and changing values that they should not...
  39. Replies
    2
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    627

    Do you have a webpage? Do you do just the FX...

    Do you have a webpage?

    Do you do just the FX or do you also do Andover?
    Do you also bind points to widgets?
    My E-Mail is posted on this site
    please send me something that I can show my boss.
  40. Replies
    2
    Views
    627

    Graphics by second party

    Today,for a second time , another contractor mentioned to me about private contractors/ individuals who specialize only in creating the graphics for controllers. mostly the FX / Tridium brand
    ...
  41. I do not like to through in my Two cents. I am no...

    I do not like to through in my Two cents. I am no means an engineer.
    However today was a good coincidence.
    I did run into one of the design engineers who worked on a couple of projects. Very good...
  42. From a strictly mechanical view.I work and...

    From a strictly mechanical view.I work and service Chill water Fan coil units
    as large as 400 tons capacity.
    The controls range from older Pneumatic to digital, a few with old electromechanical...
  43. Replies
    10
    Views
    1,970

    I gather the Niagara based controllers use the AX...

    I gather the Niagara based controllers use the AX software.
    I am interested in the
    CP 700 series VAV Controllers
    CP7300 R.T.U. Controllers
    and the
    CP 5831 Controller

    Thank you
  44. Replies
    10
    Views
    1,970

    HnyWell ComfortPoint

    What configuration tool is used for the Honeywell
    ComfortPoint controllers?
    Does anyone have a PDF. users manual or link available
    If it is the standard Live Care, I already have the software?...
  45. Replies
    13
    Views
    3,213

    Still have quite a few N-30's up and working....

    Still have quite a few N-30's up and working.
    Simple to use ,thanks with a little help from this site,very versatile.
    All you need is a null modem cable ,baud rate of usually 57600 and...
  46. Replies
    5
    Views
    1,314

    I arrived at the site. It is a Honeywell T7350...

    I arrived at the site.
    It is a Honeywell T7350 Stat
    The problem is too many fingers not enough know how
    Before I install a locking cover, is there a way
    I can lock out the keypad?
    Thanks
  47. Replies
    5
    Views
    1,314

    Honeywell Thermostat

    Hello:
    Does anyone have operating instructions for a Honeywell Programmable T-Stat
    # 32006 722 -001

    Thank you
  48. Replies
    3
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    999

    This is on one of the controlers written in...

    This is on one of the controlers written in Andover's " Plain English"

    ' Controls Speed of VFD Staic vs. StaticStpt

    Numeric mDb, TimeDelay

    FanOff:
    If Fan = On then Goto Init
    ...
  49. reliable electric and kilowatt meters

    I have had good success with Sierra instrumentsflow meters.They are reasonably priced and integrate fairly easy with Johnson and Honeywell controls( easy to program)
    I used them on water and natural...
  50. Replies
    4
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    897

    The first thing I did was look up the aux gear...

    The first thing I did was look up the aux gear manual on my laptop.
    It shows three wire connection , with one wire being a reference wire.
    I gather that this is a ground wire.

    The problem is...
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