Gree GUD50ZD/A-T

DC Inverter U-match Series Floor Ceiling Type Unit
22
Connection pipe should adopt water-proof insulating material. Its wall thickness
should be 0.5-1.0mm and the pipe wall should be able to withstand 6.0MPa. The
longer the connection pipe is, the worse cooling and heating performance it has.
When the drop between indoor and outdoor units is larger than 10m, an oil
return bend should be added every 6 meters.
The requirement on the adding of oil return bend is as below:
(1) Outdoor unit is beneath the indoor unit.
There’s no need to add non-return bend at the lowest or highest position of the
vertical pipe, as shown below:
Install an oil return
bend every 6m
Oil return bend
System gas pipe
Outdoor unit
Indoor unit
(2) Outdoor unit is above the indoor unit.
It’s necessary to add oil return bend and non-return bend at the lowest and
highest position of the vertical pipe, as shown below:
OutdoorOutdoor unitunit
Non-returnNon-returnbendbend
SystemSystem gasgas pipepipe
OilOil returnreturnbendbend
IndoorIndoor unitunit
InstallInstall ananoiloil returnreturn
bendbendeveryevery6m6m