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  1. Replies
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    It's a low-rise office building with a bunch of...

    It's a low-rise office building with a bunch of lawfirms in it... the attorneys are about as close to animals as we see in the building.

    The building itself was built in 1938 and added onto a...
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    I appreciate the suggestions (and am open to...

    I appreciate the suggestions (and am open to more!). I'll be bringing it up with our current HVAC contractor the next time they're out. It's just frustrating to have to constantly clean the...
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    Oh, I'm sure the building owner HAD the...

    Oh, I'm sure the building owner HAD the opportunity to get it installed properly... BUT those guys wanted too much money. Instead they found these guys who were sooo much cheaper than everyone else...
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    'Atta Boy, Dave!

    'Atta Boy, Dave!
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    Jellyfish in condensate pumps

    Just curious, how much maintenance should be expected for an AC condensate pump?

    Ours seem to be constantly filling up with algae/gunk. No matter how often we clean the pumps, no matter how many...
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    How appropriate for this thread!

    How appropriate for this thread!
  7. Boiler Explosion caught on Nanny Cam (w/video link)

    http://www.upi.com/Odd_News/2015/03/19/Nanny-cam-catches-boiler-explosion-taking-out-a-wall-at-Wash-home/5581426766368/?spt=mps&or=5
  8. Contractor: Where's my payment? Prop Mgr: Where's my permit?

    So, a changeout on a commercial split system on an office building... Nothing too difficult or interesting. Job was done back in January, on a holiday, since the city says cranes aren't allowed...
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    datrik: You might want to make sure it's...

    datrik: You might want to make sure it's "flawless". Soleus just recalled a boatload of dehumidifiers due to them becoming instant fireballs. My Soleus Air units have been running flawlessly for 5...
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    Saw the picture, then immediately looked for the...

    Saw the picture, then immediately looked for the OP's location. Not surprised at all.
  11. Quiet portable dehumidifer (which hasn't been recalled)?

    Okay, so after the latest batch of dehumidifier recalls, every single standalone dehumidifier I have or use has been recalled due to being a fire hazard.

    So...I'm trying to find a quiet one...
  12. Why install a central AC when you can duct-tape a window shaker?

    Wow, just...wow.
    To quote the narrator in the video, "Make sure you use good duct tape, not the s**tty kind."

    Upon reading through the comments, it looks like this was posted by a pot grower...
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    Can't answer that here -- forum mods strictly...

    Can't answer that here -- forum mods strictly frown upon DIY. And for something like this, I'd agree with them. These relays will be switching high voltage. Let your HVAC contractor deal with it.
  14. Thread: LED work light

    by tpa-fl
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    Best work light, ever: ...

    Best work light, ever:
    http://ecx.images-amazon.com/images/I/41PGb7VsQBL.jpg
    Ray-o-Vac SE3DLN Sportsman Xtreme 300-Lumen LED Lantern.

    $24 at Amazon

    Uses 3 D cells, but I have rechargeable...
  15. Thread: Fluke 233

    by tpa-fl
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    545

    Fluke 233

    Ok, I'll bite. I've seen adverts for the Fluke 233 on HVAC-Talk over the past few days. Has anyone used one? It looks awesome. I'm just worried how durable it'll be with the detachable display. ...
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    I have both a Garmin and TomTom. If I had to...

    I have both a Garmin and TomTom. If I had to only keep one, it'd be the Garmin. MUCH better maps. There's roads which have been here for 10 years that TomTom doesn't list, despite me manually...
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    There is. Capacity of installed HVAC equipment...

    There is. Capacity of installed HVAC equipment (from manufacturer's performance data sheets) - Manual J calcs for the space being cooled. That's the closest you're going to get. There are just...
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    It will indeed do what you're asking for. By...

    It will indeed do what you're asking for. By default, if you're just using a single relay, it's going to "focus" on dehumidifying over everything else since that relay solely reacts to if humidity...
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    (PIC removed) I've only added freeze stats...

    (PIC removed)

    I've only added freeze stats when there's a fixed metering device. I find most TXVs do their job well enough.

    Sometimes I'll add a second relay in there tied to the second...
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    Most PSC blower motors have multiple speed taps....

    Most PSC blower motors have multiple speed taps. Cheaper for a manufacturer to use the same motor in several models/capacities. If you're lucky, the lowest speed tap isn't in use for cooling. Wire...
  21. Thread: Hotel HVAC

    by tpa-fl
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    10,236

    I brought up the WSHP as the RI in Treasure...

    I brought up the WSHP as the RI in Treasure Island, FL, and Manhattan (6th & 39th) both had them. The other RIs I stay in are older and have VTACs.

    Central chiller/boilers are usually more...
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    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...
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    "Cool Savings" feature

    I forgot to post about the "Cool Savings" feature that some of the WR stats have. The manual isn't real clear on this, so I pulled the patent (attached). This feature can be enabled/disabled and...
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    White Rogers/Emerson 1F95-1291 (my current fav)...

    White Rogers/Emerson 1F95-1291 (my current fav) or Honeywell IAQ both do this. And yes, it can usually be done with a regular PSC blower. No need for variable speed. The WR stat installer's guide...
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    If I'm gone for more than an hour, mine's set to...

    If I'm gone for more than an hour, mine's set to 83F/55%RH. Occupied = 76F/46%RH.

    Old Lennox: 80F/38%RH feels more comfortable than 75F/65%RH. Humidity's more vital to comfort than...
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    Doesn't this belong over @ WoS?

    Doesn't this belong over @ WoS?
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    As long as the Infinity system's utility...

    As long as the Infinity system's utility curtailment terminals are used, the homeowner most likely wouldn't notice it. The Infinity locks out the 2nd stage (or drops down to 1st stage if already...
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    Take a closer look at the mini-split HPs. The...

    Take a closer look at the mini-split HPs. The better ones (Daikin, Mitsu) are capable of delivering full heat performance well into the teens. You might not even need auxiliary heat with these. ...
  29. I've re-used AC condensate in both resi and...

    I've re-used AC condensate in both resi and commercial. At my home I ran a French drain across my planting beds in my back yard. My tropical plants stay well-hydrated even in the middle of a...
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    Highly recommend

    We've been using them as much as possible for the past 2 years. Both commercial & resi. The two biggest features we use it for: a real Dehumidifiy terminal and supports external sensors for...
  31. Thread: Hotel HVAC

    by tpa-fl
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    Not trying to threadjack but...

    Not trying to thread-jack, but this seems so close to the OP that I couldn't see starting another thread for it.

    Are there any specific HVAC requirements, other than having HVAC, for the...
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    It will do it, but it's screwy. You can schedule...

    It will do it, but it's screwy. You can schedule FAN ON/FAN AUTO in the schedules. If you manually adjust the fan, your options are Auto/On/Prog On/Prog. Prog is the 10 on / 20 off fan cycling,...
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    Nope, that's normal. It shuts down immediately...

    Nope, that's normal. It shuts down immediately at termination of cooling to prevent re-evaporating water from the wet coil back into the air. (Hey, you just paid $$$ for electricity to condense...
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    Depending on humidity and airflow, I'd find 76F...

    Depending on humidity and airflow, I'd find 76F too cold as well! Try turning up the temperature. Or blankets
  35. Replies
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    White Rodgers 1F95-1291 also does this. The...

    White Rodgers 1F95-1291 also does this. The model below this also probably does this.
  36. Replies
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    My accountant charges me FAR more than $50 to put...

    My accountant charges me FAR more than $50 to put numbers into a program and give me the results. BUT, worth every single penny.
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    EASY fix. Note the exception. You CANNOT...

    EASY fix. Note the exception. You CANNOT install a fully-functional, fully-new condensing unit. So...make sure you're selling a NON-functional unit. Remove the contactor, Schrader core, etc.,...
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    That's a permit-required issue down here. FWIW,...

    That's a permit-required issue down here. FWIW, in some cities, installing/removing cabinetry and/or carpet in your house also requires a permit!
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    Where are you from? City of Tampa pulled this...

    Where are you from? City of Tampa pulled this crap on me a few years back -- BUT my system *was* fully permitted. A ton of my neighbors' weren't though. Apparently they went ticketing anyone who...
  40. Off the top of my head, I know Mitsu makes a 6k...

    Off the top of my head, I know Mitsu makes a 6k recessed ceiling unit -- saw these in a hotel recently. I believe Daikin's smallest is 9k.

    Something to keep in mind is that most of better...
  41. Thread: Hospitals Suck

    by tpa-fl
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    Lack of forward thinking re: service &...

    Lack of forward thinking re: service & replacement of equipment boggles my mind, especially in facilities like hospitals where this equipment's expected to run 24/7 and shutting down areas/facilities...
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    No, but probably far more effective. At least in...

    No, but probably far more effective. At least in FL, many insects don't give a rat's rectum about UV lights.
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    They're not all that far off. From a PTAC...

    They're not all that far off. From a PTAC manufacturer's catalog:
    http://www.stkstudios.com/images/hvac/ptac%20duct.gif

    I also saw something similar under a stilt beach house. Package unit...
  44. Thread: Retirement Home

    by tpa-fl
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    3,242

    Tons of TWEs still out there. I'm sure plenty...

    Tons of TWEs still out there. I'm sure plenty of them have had circuit-board failures from the high moisture.

    I just re-engineered the controls on my parents' TWE a couple of months back. ...
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    Haier central AC? Their small appliances are...

    Haier central AC? Their small appliances are absolute crap with ridiculously high failure rates. Where'd this guy find this Chinese AC?
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    Legal and doable, yes -- BUT that's NO excuse for...

    Legal and doable, yes -- BUT that's NO excuse for how this one was done! If anything, with the panel gone there's plenty of room in that can to do it right, or at the very least neat. Labels are...
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    I'm not sure that belongs on WoS. I'd imagine...

    I'm not sure that belongs on WoS. I'd imagine many data centers which would love such a thing (non-mains powered AC) if they knew it existed.
  48. Thread: Filter change ?

    by tpa-fl
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    2,852

    VERY common way units were installed in Florida...

    VERY common way units were installed in Florida tract housing (think US Homes / Lennar / etc). In theory, the system is installed properly and is air-tight, thus exhaust gasses from the vehicles...
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    Used to encounter this "issue" quite a bit in a...

    Used to encounter this "issue" quite a bit in a few of our office buildings. Our solution was a bit different: 1) Hire a new plumber, 2) Hire said new plumber to install Toto toilets. Fixed.
  50. Thread: Not my truck!

    by tpa-fl
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    It's called reaching your intended audience. ...

    It's called reaching your intended audience. People living in trailer parks need HVAC too!
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