distance

[slavex]

Hi
Thanks for this forum i solve many problems with your help.
I now that with your experience you can help me with this question.
I'm working on "Daikin" model RYP125L7W1(duct and cassette unit ) and RZQ200C7Y1B (VRV system)
distance between indoor and outdoor unit is width-10m, height-10m (indoor units are heigher) I don't have problem with AC but can this distance be a problem in the future, and how can i calculate addition R407.

[Brian_UK]

Additional refrigerant ? The installation instructions should give you the extra weight of refrigerant to add if required.

[wambat]

You may want to do the sub cooling method if you have TXV or superheat method with fixed orafice if you can't get mfg data

[tobyprv]

10 metres between indoor and outdoor? you shouldnt need any additional refrigerant. and you say vrv but only mention 1 indoor unit. if its only a split, daikins precharged refrigerant amount is in the manual or on condenser cover. my first reply, hope it helps.

[nike123]

When you work with vrv/vrf systems in general, you need to calculate amount of add-on refrigerant no matter if pipes are 2m or 100m long because they are not pre-charged for some length. You need instalation manual and then calculate these amounts based at actual lengths of all branches and main pipes in system.

[Krondor]

First of all, both of the mentioned units are outdoor Sky Air units (not VRV).
Second, RZQ uses R-410 (and not R-407).
Third, up to 30 meters (in RZQ200) no additional refrigerant is required. For longer distances you should use the installation manual.