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    I see your gmail address - I will send other...

    I see your gmail address - I will send other material later (clever how you disguise the g name)

    Looks like you have a handle on relays. Attached is a training bit I put together on building the...
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    You don't want this thread to be a 'cheap date' -...

    You don't want this thread to be a 'cheap date' - good to get something useful from the forum.
    Attached is an HVAC controls tech interview Q&A (back from from Staefa Control day). A bit dated (eg,...
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    oops - 'Big Red' did not pay for my CEM - they...

    oops - 'Big Red' did not pay for my CEM - they paid for the Tridium AX cert - (getting 'old' - time to retire...)
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    WhoIs - Controls have come along way since the...

    WhoIs -

    Controls have come along way since the DOS days when you would scramble to get your
    PC memory down to 612kB (don't laugh) to get the DDC pgm. tool to run (days of knowing
    config.sys,...
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    Like the Terminator man say: "Old, but not...

    Like the Terminator man say: "Old, but not obsolete".
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    When I shifted from DDC controls to Energy...

    When I shifted from DDC controls to Energy 'studies' - found out that when you report things, issues or new technology they expect you to be the SME (Subject Matter Expert) on how the machine was...
  7. The logic 'bug' ("Double Trouble") was...

    The logic 'bug' ("Double Trouble") was purposefully left in - for the 'student' to give it a try. The issue is what to do when you have (2) alarm conditions.
    Sometime the best learning is not for...
  8. Paul - You could try out this one for...

    Paul -

    You could try out this one for practice. It's Tridium-base but that shouldn't matter - any DDC code should have all the tools
    available (save for the nifty 'composite' feature that...
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    Wayne is right about "actual info". The quoted...

    Wayne is right about "actual info". The quoted "60%RH" was the max RH - sorry about that.
    I started the thread just to find out if anybody has seen such a 'crazy' configuration. I'm in the camp...
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    Lots of great comments. I keep the intro simple...

    Lots of great comments. I keep the intro simple - wait for replies. Sorry for the weak title - should of been "AHU with RA Bypass Damper".

    There is Demand Control Ventilation in the sequence....
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    AHU with RA Damper

    Came across a JCI controlled AHU with "RA Bypass".

    Has anyone seen this type of configuration? In all my HVAC DDC years - that one is new to me (it's not 'Face & Bypass Damper'). What's the line...
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    OAU not DOAS

    I'm currently working in a high humidity environment (Okinawa).

    The DOAS approach for high humidity climates is sound but execution and training the HVAC staff is important.

    A few years ago a...
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    TB, here's a "Control Path #2" Example: Pump...

    TB, here's a "Control Path #2" Example: Pump Lead-Lag Logic (see attached). If you can figure out the logic - you've got a solid foundation on the 'boolean' side of controls. All DDC code tools have...
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    Totally agree!! I know the frustration the...

    Totally agree!! I know the frustration the 'pain'. Attached are some excerpts from my Niagara Workbench Guide (NWG). Peace.
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    Timebuilder - you have email. hvactrekkie...

    Timebuilder - you have email. hvactrekkie started this thread - don't see his email in his profile - radio silence (?).

    To answer the question 'what does training usually look like?" The NWG...
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    Found this folder in my "DDC Toolbox" dungeon:...

    Found this folder in my "DDC Toolbox" dungeon: "Beginner Help".
    See attached.

    I highly recommend finding a company that would get you into a Tridium course - good start.
    Of course over years...
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    Created a basic L-INX 'user manual' for the HVAC...

    Created a basic L-INX 'user manual' for the HVAC shop guys - just basic instructions to look at points, modify setpoints and the time schedules (see attached) The facility HVAC guys are pretty basic...
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    We got it to work...just need patience. Got...

    We got it to work...just need patience. Got mislead by those who said "just plug your notebook and fire up the web browser (BUI, not GUI) to look at the data points" (the point of the visit was to...
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    'Dumb' Loytec L-INX Auto Server

    A U.S. retro-commissioning (RCx) team put in a Loytec LINX-215 Automation Server that's supporting a LON network (AHU & HW boiler). I was asked to support the Japanese "DDC techs" per a HW valve...
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    Other possible option is to look into the...

    Other possible option is to look into the "LonIPNetwork' driver - LonTalk packets are transmitted over the Ethernet Port. The 'gotcha' is that Neuron ID is virtual which requires that the network...
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    The attached PDF show what happens when you run...

    The attached PDF show what happens when you run different multiples "%parent." before the .name%_%parent
    and to see where it appears in the Config/Drivers tree. Attachment includes Bformat example...
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    The contract was awarded. The company president...

    The contract was awarded. The company president put out a bid - he's been doing it for over 30 years. Sometimes you win sometime you 'bite the bar'. After "17yrs" of doing DDC controls, pay...
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    oops..that's ASC - Application Specific...

    oops..that's ASC - Application Specific Controller.
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    A recent batch of NWGs were sent out to those who...

    A recent batch of NWGs were sent out to those who requested it & who have posted an email address in their profile.
    The latest v2.7 release has some N4 updates. A good learning game-play is to get...
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    Overseas Energy Position

    Possible overseas REM (Resource Efficiency Mgr) opening up in Germany. Work at various US Army base. Need CEM certificate + HVAC/controls background is a plus. Pay is lower 6 digit + housing...
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    Got the HVAC mech. guys to check the strainers...

    Got the HVAC mech. guys to check the strainers (they were told to check them) - after they cleaned them the pressure drop across the evap. barrel went up and the flow is back at design. Still...
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    The 'numbers' were changed to protect the...

    The 'numbers' were changed to protect the 'innocent'. But good call.
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    See attached. The BAS network was not a segment...

    See attached. The BAS network was not a segment of the FAA network. There could of been an VPN in force - that was
    out of my 'swim lane' (doing the field P2P & s/w checkout & Cradlepoint f/w...
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    Another interesting option is to use a JACE and a...

    Another interesting option is to use a JACE and a cellular broadband router (ie, CradlePoint).

    Use Nigara's BACnet 'Export Table' to share data between a BAS host and the JACE. BACnet mapping is...
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    Took some air-side measurement to estimate the...

    Took some air-side measurement to estimate the water flow.

    1) Hobo temp/Humidity loggers to determine the delta enthalpy (h) across the cooling coil.
    2) VelociCalc probe to determine the supply...
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    Do you have a background with MEP systems? ...

    Do you have a background with MEP systems? (Mechanical, Electrical Plumbing). That's essential when working with HVAC systems.
    Test question: if a feedback signal is non-linear will the PID loop...
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    Cool! - I'm off to my plumbing store. Now I can...

    Cool! - I'm off to my plumbing store. Now I can pressure spot trend that 2nd chiller. Thanks for that PHM.
    And I'll look into the strainer, etc.

    Back to the ~15F temp drop across the evap....
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    30RBA with High DT

    Doing an efficiency check out on a 106Ton Carrier 30RBA110 - 10 years old.
    Put in data loggers on the electrical feed and pressure sensors on the main supply & return ports (measure the evap....
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    If you would post your email address I'd be happy...

    If you would post your email address I'd be happy to send you my Niagara Workbench Guide (174 pgs).

    The NWG is based on the Tridium courses I've taken, the Tridium User Guides (read those suckers)...
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    I currently work in an environment that's largely...

    I currently work in an environment that's largely JCI territory. But, due to 'fair' gov't bidding practices other DDC manufactures are selected for building climate control. Those non-JCI DDCs are...
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    Basically comes down to drivers. A Niagara...

    Basically comes down to drivers. A Niagara Station uses a network driver to fetch real-time data which are modeled with proxy points. So you've got "Field Bus" Drivers (Lonworks, BACnet, Modbus),...
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    When I attended the VykonPro course back in 2016...

    When I attended the VykonPro course back in 2016 (Richmond corp. training facility), the President dropped by
    for a little Q&A. I asked the same question - "What's the future?" One reply was to...
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    The Honeywell Grey Book suggestion by...

    The Honeywell Grey Book suggestion by kontrophreak is spot on - find it, read it, park it in your 'controls library'.
    Attached are some learning 'goodies' that U might find helpful. The block...
  39. I might be jumping the 'gun' a bit - but these...

    I might be jumping the 'gun' a bit - but these days the 'days' are moving fast and getting faster. As Admiral Hyman Rickover once said, "You must learn from the mistakes of others. You will never...
  40. Kanes - The best training is to read the HVAC...

    Kanes -

    The best training is to read the HVAC mech & controls books and do the actual work. Sorry, but reading is one your own time. Get you hands on the Honeywell "Grey Book"- can't go wrong...
  41. If you would post your email address in your...

    If you would post your email address in your profile I'd be happy to send you my "Niagara Workbench Guide" -
    based on Tridium courses, work experiences & reading all those Tridium Guides. Very...
  42. Another way to go is to use a Chiller assessment...

    Another way to go is to use a Chiller assessment tool. Contact your local JCI rep. and request them to send the Yorkworks CE software (requires registration). Yorkworks CE is a suite of software....
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    In teaching AX Composites, I used a Lead-Lag pump...

    In teaching AX Composites, I used a Lead-Lag pump example. See attached PDF.
  44. Ambition - I'm an ex Honeywell DDC tech. Got...

    Ambition -

    I'm an ex Honeywell DDC tech. Got all the bruised 'knuckles' learning CARE + Tridium. If you'd post your email address in your profile I'd be happy to send you my 'ninga' tools - like...
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    This is a topic, IMHO, that sometimes be very...

    This is a topic, IMHO, that sometimes be very important in regards to PM. Many moons ago, back in my Staefa days (DOS days), I was a PM on a Middle East project. Along with running (2) big jobs,...
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    Just curious about implementing the "Trim &...

    Just curious about implementing the "Trim & Response" strategy (where you trim the static prs. setpt when all the boxes are satisfied and increase the setpoint by a xx value when one or more boxes...
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    Ok, I'll bite...In the "Niagara AX Kit Control...

    Ok, I'll bite...In the "Niagara AX Kit Control Guide" you'll see a discussion on "best practice" philosophies about point & control strategy locations. See attached PDF for visual.

    Philosophy A. ...
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    Newton's Law of Cooling says that the rate of...

    Newton's Law of Cooling says that the rate of thermal energy is proportional to the temp difference - that's seems right - like what we'd expect.

    With that Energy equation (not rate), it's got the...
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    Another way to look at it is to start with...

    Another way to look at it is to start with Newton's Law of Cooling. For a flat surface:
    Btu/hr = U x A x (delta T), where U = heat transfer coefficient (btu/ft2-hr-F) and A is the area (ft2)
    ...
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    Maybe there's some 'thread creep' going on (maybe...

    Maybe there's some 'thread creep' going on (maybe just on the router talk) , but last year I got the slight 'creeps' in dealing with a system that compromised the following:
    1) Plexus Altitude...
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