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  1. Replies
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    Daikin RXYMQ Night Mode

    Howdy folks,

    The Daikin guy will be out at my house today to make tweaks to my Daikin system after the cooling season has started.

    One of things we might end up tweaking is the Night Mode...
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    That figures. I used the automatic setting in...

    That figures.

    I used the automatic setting in the beginning, but it set the units to gale-force winds blowing through the house. I switched it back to manual mode and turned the air flow down to...
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    Daikin discharge air temps

    Howdy, folks,

    My Daikin VRV-IIIS has been up and running for about 6 weeks now and I've had the pleasure of seeing it run in both heating and cooling. Thus far I'm happy with it. (Full review and...
  4. Found it! Thanks, Tech. Helped a ton!

    Found it! Thanks, Tech. Helped a ton!
  5. Replies
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    I cannot imagine any VRF manufacturer allowing...

    I cannot imagine any VRF manufacturer allowing this. Their pipe sizing rules, fittings, etc. are all made so that their systems work when the finished product is installed. That's how they guarantee...
  6. Daikin Navigation controller "Indoor Unit Status"

    Howdy folks,

    The Daikin system has been working in my house for about a month now. Seems to be doing OK; I'm going to have my rep out in a few weeks to make sure that I programmed everything OK.
    ...
  7. To an extent, I would agree with you. By...

    To an extent, I would agree with you.

    By virtue of their need to cool, compressors have a certain minimum RPM that they must maintain in order to ensure that they get adequate lubrication and...
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    1,214

    Day 5 and 6

    Well, I got pooped last night so I didn't take any photos. Yesterday and today a great deal of progress was made. First, the refrigerant lines are run and ready for final connections to the piping...
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    Yep, you're right. There really was no other good...

    Yep, you're right. There really was no other good place to put it, though, considering that this is the unit that serves the room above it. If the blower does need to be replaced, I'll have to take...
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    Now Day 4...

    The fan coil in the laundry room is nearly complete. The main duct trunks to the fan coil were completed today. The biggest progress was in the crawlspace underneath the family room. This fan coil...
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    1,214

    Day 3

    Contractors returned to the site today. One more fan coil is up and the ductwork has started. Many of the takeoffs have been connected and some are going to be a bit more difficult. The light fixture...
  12. Replies
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    1,214

    Day 2

    Nothing really happened on Sunday, so Monday was Day 2. In order to make way for the fan coil unit serving the living room and kitchen part of the house, the water heater needed to be moved. After a...
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    With the exception of the individual takeoffs to...

    With the exception of the individual takeoffs to diffusers, all ductwork is being demolished and replaced with properly sized ductwork with one inch of insulation lining for acoustics. (Since one...
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    Yes. I had the diffusers in my home that I wanted...

    Yes. I had the diffusers in my home that I wanted to reuse and I also have duct heaters for auxiliary heat as well.
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    Daikin's going in my house!!

    Howdy, folks,

    OK, so I really have no idea which section of the forum a post like this goes in, so I'll just file it in "General" for now and hopefully will be able to post its conclusion in "Wall...
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    50PanHead, We are a consulting engineering...

    50PanHead,

    We are a consulting engineering firm that has done work on your campus before and we have a number of Daikin systems underneath our belt. We are working with TMI, as previously...
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    2,388

    Yeah, I was a bit befuddled as well, but the...

    Yeah, I was a bit befuddled as well, but the Daikin guy tells me that the only thing "Auto" about the fan is that the fan goes off when the stats no longer call. Otherwise, they are running on...
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    I guess I'm confused because Daikin tells me that...

    I guess I'm confused because Daikin tells me that the fan speed doesn't change... It only shuts the fan off when the thermostat is satisfied. Otherwise, it's a CAV system, with three user-selectable...
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    Thank you for all of the input. To comment and...

    Thank you for all of the input.

    To comment and respond to some posts, the ducted units that I will be using ("P" series) I have confirmed have an "Auto" fan mode, although, curiously, the mode...
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    Residential Load Calc for Daikin VRVIII-S

    Howdy folks,

    I'm applying a Daikin VRVIII-S to my house. I've run loads for four zones in my home and want opinions as to what equipment size I end up going with.

    Zone 1: Bedrooms
    12.6 MBH...
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    How big is the condenser? How big is the space...

    How big is the condenser? How big is the space the condenser is sitting in? How often will the machine run?

    I've done similar things in basements before with very small condensers cooling a small...
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    Daikin Operation Question

    Howdy folks,

    Got a question for the Daikin guys out there... how does your VRV system maintain room setpoint?

    My understanding is that indoor fan coil units (all of them) are basically constant...
  23. Jim, Yes, they are in the 435/Lackman area of...

    Jim,

    Yes, they are in the 435/Lackman area of suppliers. They have an 8-ton 3-phase model available and various configurations of indoor equipment.

    I've got dibs on the 4-ton single phase until...
  24. Thanks for the replies. The reason why the...

    Thanks for the replies.

    The reason why the equipment was removed was to make way for for the new brands that the vendor wanted to showcase. The units themselves were fully functional at the time...
  25. Hygroscopicity of POE (and whether or not it should be replaced)

    Howdy folks,

    I've been given an opportunity to purchase some second-hand VRV equipment that I am very interested in installing in my home. The equipment is out of a small office building that...
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