Results 1 to 8 of 8
  1. #1
    Join Date
    Apr 2008
    Location
    england
    Age
    38
    Posts
    41
    Rep Power
    0

    Daikin VRV3 iTouch/Vam unit question



    To save the hassle of phoning Daikin tech tomorrow and to save face. I was hoping someone could answer a quick little question regarding wiring up VAM units on a VRV3 system with 13 FCU's to a iTouch controller.

    So obviously all the BS Boxes are linked with F1 F2 outdoor and i have a seperate cable from the condenser to the iTouch. However there are 3 VAM units that also need to be connected to the iTouch.

    How would i do that? Do i come off the last BS Box in the F1 F2 outdoor terminal? or from the last FCU? or do i link up the VAM units seperately and run another cable to the iTouch and link it with the cable from the condenser?

    If possible, and if any gurus are about, could someone tell me the procedure to address units for the iTouch so in the future and forever i will know.

    Hopefully someone can help an apprentice trying to impress a boss.

    Thanks a lot,



  2. #2
    Join Date
    Oct 2001
    Location
    Nottingham UK
    Posts
    5,667
    Rep Power
    51

    Re: Daikin VRV3 iTouch/Vam unit question

    The VAM units have F1,F2 connections.

    Just wire to the F1,F2 terminals via a KRP2A board if you want remote on/off etc. Include them into the indoor F1 F2 loop. Don't star wire them.
    Last edited by frank; 28-05-2009 at 08:43 PM.

  3. #3
    Join Date
    Apr 2008
    Location
    england
    Age
    38
    Posts
    41
    Rep Power
    0

    Re: Daikin VRV3 iTouch/Vam unit question

    I saw the F1 F2 connections on the electrics cover when we hung them, however im still a bit unsure on what you have replied with.

    Do i include them with the BS Box (outdoor) F1 F2 loop or do i come out of the FCU F1 F2 (indoor) connection on the last unit?

    And is the KRP switch necessary with the iTouch Controller?

    Can the VAM unit not be turned on/off with (i guess) different fan speeds from the iTouch Controller?

    I dont think any have been ordered in and have never heard the contracts manager mention it.

  4. #4
    Join Date
    Nov 2007
    Location
    London
    Posts
    461
    Rep Power
    17

    Re: Daikin VRV3 iTouch/Vam unit question

    what you will need to do is wire them to the FCU and not the bs box.

    just tag them onto a fan coil unit

  5. #5
    Join Date
    Oct 2006
    Location
    UK
    Age
    57
    Posts
    165
    Rep Power
    18

    Re: Daikin VRV3 iTouch/Vam unit question

    Hi Ross,

    You should connect the VAMS and any other non-VRV equipment to the F1 F2 outdoor terminals on the BS Box. It does not have to be the last BS Box as long as you don’t star wire.

    When you address the group numbers on the VAM unit, also enter the field setting 17-7-02. This will allow you to control the operation mode and fan speeds from the iTouch controller.

    Good luck

    Obi Wan.

  6. #6
    Join Date
    Apr 2008
    Location
    england
    Age
    38
    Posts
    41
    Rep Power
    0

    Re: Daikin VRV3 iTouch/Vam unit question

    Thanks a lot for the replies guys.

    But they contradict each other? :\

    When connecting the VAM unit to the BS Box F1 F2 outdoor terminals, is this only when the iTouch is going to be used to control it?

    And if, for example, i wire it from the FCU - if the FCU had its own local remote, it would control both single FCU and VAM unit?

    Sorry for all the questions. Hopefully it becomes clear for me and others who would like to know a bit more.

  7. #7
    Join Date
    Oct 2006
    Location
    UK
    Age
    57
    Posts
    165
    Rep Power
    18

    Re: Daikin VRV3 iTouch/Vam unit question

    You only need to connect the VAM to the F1 F2 terminals if you want to control it from a centralised controller (like iTouch, iManager KRP2A1).

    If it was a Heat Pump system (2 Pipe) you can wire the VAM to the F1 F2 terminals on the fan coil as there is no BS Box.

    On the Hear recovery systems (3 Pipe) you should wire to the F1 F2 outdoor terminals on the BS Box. This is to ensure the VAMS are connected to DIII Net, but with “one BUS up”. Same as the heat pump systems.

    If you want to control the VAM from a remote controller serving a fan coil then you wire the VAM to the P1 P2 terminals on the fan coil unit.

    Regards

    Obi Wan.

  8. #8
    Join Date
    Apr 2008
    Location
    england
    Age
    38
    Posts
    41
    Rep Power
    0

    Re: Daikin VRV3 iTouch/Vam unit question

    Top man Obi Wan.

    Thank you very much

Similar Threads

  1. Transmission wiring on Daikin VRV2
    By Markie in forum Air Conditioning
    Replies: 19
    Last Post: 25-09-2009, 06:24 PM
  2. R134a Laboratory unit: Question
    By James W in forum Refrigerants
    Replies: 2
    Last Post: 10-02-2007, 06:23 AM
  3. Daikin controller question
    By THERMOACC in forum Air Conditioning
    Replies: 9
    Last Post: 10-03-2006, 10:48 PM
  4. Lennox fan coil unit question
    By THERMOACC in forum Fundamentals
    Replies: 2
    Last Post: 17-02-2006, 10:31 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •