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Type: Posts; User: TAC Service

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  1. Replies
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    GOODMAN, the hackers unit of choice.

    GOODMAN, the hackers unit of choice.
  2. Replies
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    1,524

    Two nice polls to tie off to for fall protection.

    Two nice polls to tie off to for fall protection.
  3. Thread: Oy Vey

    by TAC Service
    Replies
    18
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    1,908

    What a dummy, he forgot the flare nut !!!

    What a dummy, he forgot the flare nut !!!
  4. Replies
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    3,638

    Must be an EMT shortage.

    Must be an EMT shortage.
  5. Replies
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    2,710

    That's how you install it when you need to...

    That's how you install it when you need to reverse the supply and return on a side discharge.
  6. Thread: Rental

    by TAC Service
    Replies
    24
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    3,420

    If there is a hole in the backyard fence I know...

    If there is a hole in the backyard fence I know where to get the blocks to fix it.
  7. Replies
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    2,676

    Thanks for the response, It looks like it will...

    Thanks for the response, It looks like it will work if you set it up as pressure dependent and get away
    from the velocity controller. I was mainly curious if anyone has ever seen an installation...
  8. Replies
    12
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    2,676

    VAV Reheat System

    We just started servicing a building that has two large VAV package units and a hot water boiler with pump all located on the roof, this system is very common for the area. Downstairs in the suite...
  9. The balancing valve should be installed in the...

    The balancing valve should be installed in the return line on the system side of the by-pass line. That way the coil or its by-pass line will never use more water than its designed for.
  10. Replies
    5
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    1,316

    Your amp draw will be under FLA because the head...

    Your amp draw will be under FLA because the head pressure is low. Your expansion valves are hunting because you don't have the required 100 psig MOP. The suction is less that 100 psig from the...
  11. Replies
    10
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    2,712

    The pitch of the swamper matches the slope on the...

    The pitch of the swamper matches the slope on the mountain.
  12. Replies
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    1,598

    Quality Craftmanship

    Went on a call today and found the last tenant removed their AC unit when they moved. The new tenant felt thet needed some air so they had one of our fellow craftsman borrow some air from another...
  13. Replies
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    2,747

    Cut a hole in the floor and you have a perimeter...

    Cut a hole in the floor and you have a perimeter heater for the porch.
  14. Replies
    8
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    2,271

    When I send my duck to work he refuses to wear...

    When I send my duck to work he refuses to wear boots.
  15. Replies
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    13,503

    The pump will never wear out.

    The pump will never wear out.
  16. Thread: what code?

    by TAC Service
    Replies
    15
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    3,078

    They really need to paint the unistrut.

    They really need to paint the unistrut.
  17. Replies
    9
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    1,591

    Someone installed their ice machine outside.

    Someone installed their ice machine outside.
  18. Replies
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    2,541

    Who gets to clean the spray tree & nozzles:gah: ?

    Who gets to clean the spray tree & nozzles:gah: ?
  19. Replies
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    14,960

    One of the big problems is he will be the helper...

    One of the big problems is he will be the helper for the next several years.
    That can be physically challenging as well as mentally challenging to take orders from someone half his age.
  20. Replies
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    2,523

    If the air conditioning thing doesn't work out...

    If the air conditioning thing doesn't work out you can always go into
    movie making.
  21. Replies
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    1,432

    www.solidyne.com (http://www.solidyne.com)

    www.solidyne.com
  22. Replies
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    2,272

    OSA temperature was commonly used in commercial...

    OSA temperature was commonly used in commercial buildings with alot of solar exposure (glass) to bring on the refrigeration system. The load of a glass building will be effected more by OSA. The...
  23. Replies
    9
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    1,695

    Over the years there have been several attempts...

    Over the years there have been several attempts to use high pressure duct systems in commercial office buildings (4" to 8"wc). The advantages were smaller duct (cheaper) and less attic space...
  24. Replies
    4
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    1,802

    Thank You.

    Thank You.
  25. Replies
    4
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    1,802

    Landis & Gyr (Powers) System 600

    I just inherited this building with a small system 600 panel. Its primarly used for start-stop and some elementary control functions. The owner wants to keep it because its currently working. There...
  26. Thread: OA Intakes

    by TAC Service
    Replies
    8
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    1,547

    We have a customer that installed screen material...

    We have a customer that installed screen material (like you find in your screen door) over the fresh air intakes, its very effective but has to be cleaned regularly.
  27. When you have a receiver in the system it is no...

    When you have a receiver in the system it is no longer a critical charge unit. A proper charge is having the pick-up tube in the receiver covered in liquid under all operating conditions. Most...
  28. Replies
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    457

    Frozen Dampers

    We have had issues while freeing up frozen economizer dampers on large air handlers with odors in the building from the lubricant we use. Liquid wrench seems to work the best but stinks the most. ...
  29. Replies
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    1,070

    You will need to pressurize it, locate and repair...

    You will need to pressurize it, locate and repair the leak(s). Tell your boss to calm down, when new equipment fails on start-up there will be a labor and material allowance from the factory. It...
  30. Thread: R-438a

    by TAC Service
    Replies
    0
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    1,073

    R-438a

    Has anybody used Dupont ISCEON M099 (R-438a) refrigerant as a direct replacement for R-22 yet ? If you have, what size system and how did it work ?

    Thanks
  31. Replies
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    7,093

    Yellow flashing light on Mcquay WSHP is low temp....

    Yellow flashing light on Mcquay WSHP is low temp. Is it tripping in heating or cooling ?
  32. Replies
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    2,356

    ravbc402be03b does not look like a good number.

    ravbc402be03b does not look like a good number.
  33. Replies
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    2,454

    Once you put air into the attic space it becomes...

    Once you put air into the attic space it becomes a plenum and will be subject to all the rules such as no exposed wood (flammables) all wiring in conduit or plenum rated, etc. At least thats the way...
  34. The standard for industrial timers for years was...

    The standard for industrial timers for years was Agastat.
  35. Replies
    6
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    1,427

    Over & Under

    Does anybody still make a 7.5 ton package heat pump with the over/under duct configuration to replace a Carrier 50MA series unit ? Thanks
  36. Replies
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    3,341

    The disconnect is fine, its the unit thats...

    The disconnect is fine, its the unit thats leaning.
  37. At our safety meeting this morning I told him to...

    At our safety meeting this morning I told him to where his shirt, they never listen.
  38. Replies
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    2,756

    One of the 1st things to be checked when you have...

    One of the 1st things to be checked when you have low oil pressure on a 5H compressor and its not noisey is the oil regulator valve. It is located under a large hex nut on the nose of the compressor...
  39. Replies
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    1,808

    It looks like a 5 ton rooftop heat pump. This is...

    It looks like a 5 ton rooftop heat pump.
    This is the closest thing I have.
  40. Thread: pumps.,

    by TAC Service
    Replies
    5
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    910

    In most cases the CHW pumps will not shut down on...

    In most cases the CHW pumps will not shut down on chiller setpoint. The pumps are generally controlled by OSA, RA,etc.
  41. Thread: pumps.,

    by TAC Service
    Replies
    5
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    910

    #1 - Both pumps need to operate whenever the...

    #1 - Both pumps need to operate whenever the chiller is running. The primary pump ensures that there is always correct flow through the chiller. The secondary pump pulls chilled water off the...
  42. Replies
    11
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    1,688

    I have used the Cypress wireless...

    I have used the Cypress wireless digital/pneumatic zones thermostats. By the time you install the thermostats and repeaters, then fix the exisitng actuators and velocity controllers a real DDC system...
  43. Replies
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    1,835

    Cable Color Codes

    Does anyone know of a standard color code for cables used in building automation for communications, power, inputs, etc.

    Thanks
  44. Replies
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    4,445

    Check this link for the sound blanket: ...

    Check this link for the sound blanket:

    http://www.brinmar.com/sound_blankets.html
  45. Replies
    6
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    1,119

    R-22 Unit Replacement

    What are you guys doing when you come across a smaller condensing unit (say 5 tons & under) it is 20+ years old, not in good shape and the compressor has failed. In the past we would just change the...
  46. See page 8 of the attachment.

    See page 8 of the attachment.
  47. Replies
    13
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    1,165

    You need to come up with alot more information...

    You need to come up with alot more information than this.

    What refrigerant, what is the target coil temperature, what is the ambient temperature, is it water or air cooled, etc. ? Better yet,...
  48. Replies
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    1,350

    See attached.

    See attached.
  49. Replies
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    1,242

    I agree with Control Man, TCS controls are...

    I agree with Control Man, TCS controls are simple, reliable and sold over the counter.

    http://www.tcsbasys.com/

    Frank,
    I can't believe you passed up a chance to sign up a new dealer.
  50. Thread: Lon ?

    by TAC Service
    Replies
    5
    Views
    634

    Alias A network variable alias is a copy of...

    Alias


    A network variable alias is a copy of a network variable containing the same value as the primary network variable but using a different selector. Since it has a unique selector, it allows...
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