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  1. Thread: VRV Residential

    by mchild
    Replies
    5
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    545

    I installed the 4 ton Daikin VRV-S II system in...

    I installed the 4 ton Daikin VRV-S II system in my home in late 2008. The home is an old farm house with a couple of additions (3,100 sf) so there is a fair amount of diversity between the four zones...
  2. Looking for contractor on the North side of Pittsburgh

    I checked the contractor locator map and did not see much. Sis-in-law and family are getting ready to move into new construction and are looking for a top notch HVAC contractor to look over the new...
  3. Replies
    2
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    528

    And one other thing. The reason they keep the...

    And one other thing. The reason they keep the blower running is probably because the room temp is monitored by a return air temp sensor. So they must keep the air moving over that sensor. If you...
  4. Replies
    2
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    528

    While I'm not real familiar with LG, most, if not...

    While I'm not real familiar with LG, most, if not all, of these systems have the indoor blower running all the time. So even when an indoor unit has satisfied the temp, the blower will stay running...
  5. Use something like this in your filter grille:

    Use something like this in your filter grille:
  6. Replies
    12
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    2,721

    I originally thought it would work to control...

    I originally thought it would work to control multiple indoor units with only one of the older style controllers (BRC1D71). I have since stepped up to having individual controllers for each indoor...
  7. Replies
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    Okay, I think that might be stretching it a bit...

    Okay, I think that might be stretching it a bit to call that an Auto function. I thought on that unit you got the fan to go off when the call was satisfied by simply using regular Field Codes...
  8. Replies
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    In looking at the KRP board schematics I had the...

    In looking at the KRP board schematics I had the thought that the humidifier terminals might work that way. Here is why I decided to go with separate stats - my home is an old farm house and...
  9. Replies
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    2,721

    I guess I'm not completely sure what the Auto fan...

    I guess I'm not completely sure what the Auto fan function on the P series air handler does. Does it not change the blower speed as the load in the space changes? Yes, I know Mitsu has Auto fan but...
  10. Replies
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    2,721

    I installed my VRVII-S in the fall on 2008, so I...

    I installed my VRVII-S in the fall on 2008, so I have now lived with it through several cooling and heating seasons. Like you I have the 4 ton system with three 18K indoor units and one 9.5K indoor...
  11. I think you must be referring to the button lock...

    I think you must be referring to the button lock function. Here it is: 298631
  12. Is this what you need?298601

    Is this what you need?298601
  13. Replies
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    5,593

    According to the extended data the 3 ton has a...

    According to the extended data the 3 ton has a minimum cooling capacity of 12,890 BTU (11,010 Sensible) at 63*WB indoor and 95*OAT at 500 CFM. Interestingly the 2 ton unit is not much different, BUT...
  14. Replies
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    COP = Co-Efficient of Performance with 1:1 being...

    COP = Co-Efficient of Performance with 1:1 being a COP of 1 or number of units of output for every unit of input. A COP of 3.5 is a higher level of operating efficiency than a COP of 3.1 (note: 3:1...
  15. Replies
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    1,919

    What blower speed do you set the on indoor unit...

    What blower speed do you set the on indoor unit when you use the Fujitsu?

    I have a Daikin system and it has the ability to set the target evap coil temp. If your Fujitsu has a similar setting...
  16. Replies
    5
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    922

    If your Zuba system is similar to most all other...

    If your Zuba system is similar to most all other Japanese systems the indoor blower will cycle off during periods of defrost.
  17. Replies
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    1,570

    Here is a link to the .pdf of the owner's manual...

    Here is a link to the .pdf of the owner's manual for that controller. It should answer most if not all of your questions, but if you still have questions feel free to ask.
    ...
  18. For one Japanese manufacturer they reported for...

    For one Japanese manufacturer they reported for their VRF system (Variable Refrigerant Flow) with an inverter compressor that the energy required at 50% load was 30% of the energy required at full...
  19. atomic- The better approach is to tighten the...

    atomic-

    The better approach is to tighten the envelope of your home so the cooling and heating you are pumping into it stays. Have an energy audit done, which will identify where your home is...
  20. Replies
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    9,835

    These systems are designed to have a 25 year...

    These systems are designed to have a 25 year life. Many of the issues causing problems with conventional heat pumps have to do with ducting and air flow issues as it is the one area that is the...
  21. I have an 1800s farm house with an open air crawl...

    I have an 1800s farm house with an open air crawl space under the oldest part of the home. The second story had high-hats and pull down stairs which allowed air to flow from the crawl up through the...
  22. Replies
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    9,835

    One other item that I forgot to mention in my...

    One other item that I forgot to mention in my earlier post. Even though you will not finish the room over the garage until later, you would have several options with a VRV/VRF system. You could...
  23. Replies
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    9,835

    Read my post above yours. Small ducted air...

    Read my post above yours. Small ducted air handlers are available with the VRV/VRF systems in capacity ranges of 6,000 to 48,000 BTU. Each A/H will be a zone that is independent of the A/H.
    ...
  24. Replies
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    9,835

    Any system from Asia is often referred to as a...

    Any system from Asia is often referred to as a mini-split when in fact that refers to the smaller capacity systems below a typical conventional split system of about 1.5 tons.

    Each of the major...
  25. ted, If you have not already done so you may...

    ted,

    If you have not already done so you may find some info if you search this board for Aeroseal and former board member dash. He was an Aeroseal dealer and posted about it frequently.
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