daikin and midea compatibility

[nick2ono]

hi guys!!!

i have a building that was designed to have midea vrv
and the pipping installation was made with this criteria
is there any chance to have problem installing a daikin vrv and is there any difference for the pipes???

ps : we are talking for the same system requirements

midea 6hp with 2 4kw units and 2 3kw units
daikin as above......

[james10]

Speak to Daikin, i was on a Daikin course recently and the technical guy who ran the course said they were now offering condensing units to swap out using the original indoor units and pipe work

[martinw58]

you will have to check the pipe sizes as thay have to the corect size for the units also the refnets have to be right

[martinw58]

the r22 replacement condensers do not go with all indoor units

[sameh]

the r22 replacement condensers do not go with all indoor units

[Makeit go Right]

I have a building that was designed to have midea VRF and the piping installation was made with this criteria?

Is it a running system (r22/407c) that you are planning to change, or just been piped up with the idea (bad idea) of using Midea kit?

If a dead R22/407c system, you will have the trouble of getting the old oil out -- system needs to run if you are converting up to Daikin 410a kit. They have a tech sheet on what can change over and what cannot - call their technical dept for details/chat.

Oh just found this link: http://staging.ecobuild.co.uk/var/uploads/exhibitor/2206/3ldqmfglwv.pdf

I guess you could flush out the old pipework and use what is duplicated in the new system arrangement, but that flush can be quite a task, and may invalidate the new warranty anyway.

If Daikin are happy generally, then I think you will need to get all the site info (pipe sizes/runs/room unit duties/power where,amps, etc) and go over it with Daikin to see what you can use and what needs changing. If it were me, I would do all I could to get it changed out from Midea kit. Midea is quite good in some respects, but try getting spares!!!! OMG. I have been banging my head for 3wks, trying to get a new PCB for an inverter split in a Computer Room. Zeta-UK don't keep spares -just new kit. And Midea in China don't seem to either --they are getting a PCB made up by one of their electrical suppliers....from record drgs (taking 2wks+):confused: The kit was only 2+half years old (still in warranty) Oh, sorry, I am having one again.

So, worth getting over onto the Daikin, or some brand that really does have a full inventory of spares nearby, or somewhere -- not just words. Last thing you want is to explain to customer why there's no spares for the installed system.

[nick2ono]

yes it has been piped up with the potential of installing a midea vrv...:confused:
i ''ll check the pipes and their dimensions:o
i have a seriouw problem though, i cannot change them
since the building is finished :rolleyes: