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  1. Replies
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    I would check in my navigation tree in Orcaview...

    I would check in my navigation tree in Orcaview or Entelliweb and click on the device and see what it is capable of. Should say something like event enrollment, just to make sure the devices can...
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    Google "controller tool help johnson controls" ....

    Google "controller tool help johnson controls" . There is a 1500 page pdf on the meanings of these. I am not a Johnson controls guy, but the information should be in that document.
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    Thank you John for this. Thank you 2sac for the...

    Thank you John for this. Thank you 2sac for the link. I was actually going through a box of used belimos today to see if they still worked and figured there has to be an easier way.
  4. By awesome feature, I meant just that. It is a...

    By awesome feature, I meant just that. It is a feature and not necessarily the best or only way to do it.
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    Bumping this for ideas and to give an update. ...

    Bumping this for ideas and to give an update. HVAC guy will be here next week. Would like the collective wisdom of you guys, so that way I know if HVAC guy is on the right path. Thinking of...
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    So each boiler is independent. So write 5 to...

    So each boiler is independent.
    So write 5 to config AV0 constantly.
    Write 0 to coils AV1 when you want the boiler off, write 1 for on.
    Write rate command for firing rate.
    That should be it....
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    Used Delta Controls. Configuration shows up as...

    Used Delta Controls. Configuration shows up as AV37 for me??? Threw me off.

    Av38 is coils and AV39 is rate command. Might be different and correct for you though.

    Boilers swap lead every 24...
  8. Our chillers where upgraded a few years ago,...

    Our chillers where upgraded a few years ago, along with new Armstrong pumps with this awesome feature. The Engineer still used dp sensors across the chiller. Maybe old school, or maybe doesn't...
  9. Almost all our pumps are Armstrong with attached...

    Almost all our pumps are Armstrong with attached VFD, maybe 20 of them. We only use this feature on a few. But the pumps are great and the control seems good.
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    Just finished setting my Lochnivar boilers to be...

    Just finished setting my Lochnivar boilers to be control by BacNet today. I don't have DHW hooked up to these boilers, but I think I read that 1 boiler needs to be set up as your DHW boiler. So when...
  11. You can do anything you want in controls :grin2:,...

    You can do anything you want in controls :grin2:, but why would anyone do this? I would do it one way or the other. Dp is the simpler standard way to do it. With more information and computing...
  12. Totally agree that price of controls is coming...

    Totally agree that price of controls is coming down. At the same time, energy costs are going up. Even the simplest systems have some sort of control. Our one out building has sensorless...
  13. This

    This
  14. I meant if it was an existing install or hard to...

    I meant if it was an existing install or hard to place multiple sensors. Someone could measure with gauges at possible locations to see the range. And use the info from the one senor accordingly. ...
  15. Think you need to locate it where you need to...

    Think you need to locate it where you need to know the dp. Can place multiple if it is a big or complex system. Or measure at a few locations and use the one installed to represent the whole...
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    The valves I have dealt with, you can reverse...

    The valves I have dealt with, you can reverse them like you stated. But some times you have to bend the tabs on the handle, which removes the stop and you will be able to over rotate the handle.
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    Could be 10k type 2 or 3.

    Could be 10k type 2 or 3.
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    Agree on the comms thing. Would love to see that...

    Agree on the comms thing. Would love to see that article. Think we only take total cfm and an on status or motor feedback from hood controller through comms. Not any issues that we see, worst case...
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    Reply for Controls_3AE "If you have lab spaces...

    Reply for Controls_3AE

    "If you have lab spaces in your research facility, are they Delta controllers as well or are they a 3rd party like Phoenix or TSI?"

    All the main controllers are Delta....
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    Our whole research facility, around 8 buildings...

    Our whole research facility, around 8 buildings is all Delta controllers and Delta Controls operating system. We started with Delta more then 10 years ago, and we have no issues and good service. I...
  21. Thread: Cooling tower

    by Gdh33
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    Need to see what the tower operation manual says...

    Need to see what the tower operation manual says or individual manuals (motor, gearbox, vfd, etc.) say. I gather all the manuals for my equipment preferably in pdf format. Store it somewhere on my...
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    Browsing through their help area. Looks like it...

    Browsing through their help area. Looks like it may be in bindings. Under expression. Then should be able to put 0.0 as the format somewhere or state it somehow.
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    I looked and couldn't find what you are asking. ...

    I looked and couldn't find what you are asking. But, do you know what type of graphic it is? Dg5, svg, gpc? All of our graphics on entelliweb, accessible from entelliviz, are svg. Assuming yours...
  24. Thread: HEATPIPS in FAHU

    by Gdh33
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    Interested in this. Wouldn't the benefit be the...

    Interested in this. Wouldn't the benefit be the energy saving from the easier cooling and moisture removal by the cooling coil? I see the "free" reheat temperature rise after the coil and think...
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    Our whole facility is Delta Controls. I like the...

    Our whole facility is Delta Controls. I like the products. Most of the information and documentation is in the Entelliweb or Orcaview program. Just search in the Help section of these programs and...
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    Like others said, need more info. Ours are dual...

    Like others said, need more info. Ours are dual duct (hot air mixed with cold air). Few units have a hydronic heat coil after the vav to boost heating. Dampers and valves are operated by belimo...
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    My post just above should read as 60 Deg C set...

    My post just above should read as 60 Deg C set tank temps (140 F), no lower than 50 Deg C tank temp or testing required. Couldn't find edit function for past post.
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    Must be that super high end ice making/storage...

    Must be that super high end ice making/storage system for low load and off peak times that I have been reading about.
  29. Just a follow up, some returns are now pulling...

    Just a follow up, some returns are now pulling air. Some are not (maybe not connected?). Big thank you to everyone. Obviously more work to be done. Did a temp rise across my heat exchanger...
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    Our facility requires HWTs that supply showers to...

    Our facility requires HWTs that supply showers to be set at 160 deg F. And if the tank goes below 150 F we need to do a legionella test. Otherwise the showers farthest from the tanks are tested by a...
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    I don't know what it is like in the NYC area, but...

    I don't know what it is like in the NYC area, but I have worked for Power Generation companies, Ethanol Production, Steel Production, and now a Research Facility as an Operatung Engineer. Up here...
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    Return fan needed on meeting room AHU?

    Existing rooms were converted to our main meeting room in the 1980's. Approx 30' x 40' seats 180 people. It is an indoor ahu (Sheldons 4LP-2000) that consists of a supply fan and a heating coil and...
  33. Instructions says abs. Think they changed code...

    Instructions says abs. Think they changed code just after. Was installed between 2004 and 2006. But I am no pro.
  34. Well I will box in the two returns I found. Check...

    Well I will box in the two returns I found. Check the other ones that can be accessed and then check flows again. See if return equals supply.
  35. Ah your right. I found one other joist return...

    Ah your right. I found one other joist return that was compromised because of going to dropped ceiling. But seeing as this section was the only part still drywalled, I assumed it original. Guess it...
  36. No return air from half of the house. Return duct almost disconnected...

    Was hot in bedrooms, especially with doors closed. Return grilles in all rooms. But not pulling any air. Blocked off all other return grilles in house, run the fan and still barely any flow. Lots...
  37. Much appreciated guys.

    Much appreciated guys.
  38. For me, it is like a hobby and interesting. Like...

    For me, it is like a hobby and interesting. Like woodworking for some people vs buying it at IKEA. Or hotrods vs buying a McLaren. Willing to spend more time and money because it is what I like. ...
  39. Thank you for your replies. Any thoughts on if...

    Thank you for your replies. Any thoughts on if and when the communication is going to become more open source, non proprietary? 1 year, 10 years, never?
  40. Not opposed to Geothermal. My neighbours have...

    Not opposed to Geothermal. My neighbours have it, I have the land for the loop. But I don't see the payback with gas so cheap. Enlighten me if you see otherwise. Thanks.
  41. Variable speed fan, modulating burner, multistage cooling? Upgrade.

    Looking at upgrading my HVAC system in a few years. Seeing what is out there now. I work as an Engineer/Operator of Building systems and HVAC at a research labratory. Having seen the equipment we...
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    Need both. On our systems, schedule turns off...

    Need both. On our systems, schedule turns off and thus shutd down AHUs and equipment. Night setback is enabled. If any temps exceed setback, something corrects this( ahu, local heat, fan,...
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    We have 100 plus VAVs on OS. We just cherry pick...

    We have 100 plus VAVs on OS. We just cherry pick the coldest or hottest rooms or most important people. Average that temp vs their set points. See how rest behaves.
  44. Thread: VRF hvac systems

    by Gdh33
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    We have a few systems installed, not VRF though,...

    We have a few systems installed, not VRF though, that heat and cool at same time for dehumidification. Would ask installer or BAS programmer at what RH does the units dehumidify to? Is the zone...
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