Daikin VRV III REYQ8PY1 Service Manual page 165

Test Operation
Note:
1.2.5 Additional Refrigerant Charge and Check Operation
The outdoor unit is charged with refrigerant when shipped from the factory, but depending on
the size and length of the piping when installed, it may require additional charging.
For charging the additional refrigerant, follow the procedure in this chapter.
And then carry out the check operation.
Note: Total amount of refrigerant should be 100kg or less
1.2.5.1 Before Working
[About the refrigerant cylinder]
Check whether the cylinder has a siphon pipe before charging and place the cylinder so that the
refrigerant is charged in liquid form. (See the figure below.)
With siphon pipe
Other tanks
Note:
154
Piping lead-out hole lid
Open a knock hole at "
After knocking out the holes, we recommend you remove burrs in the knock holes (See
above figure) and paint the edges and areas around the edges using the repair paint.
Always use the proper refrigerant (R-410A). If charged with the refrigerant containing an
improper material, it may cause an explosion or accident.
R-410A is a mixed refrigerant, so charging it as a gas will cause the refrigerant composition
to change, which may prevent normal operation.
Caulking, etc.
Insulation material
".
Stand the cylinder upright and charge.
(The siphon pipe goes all the way inside,
so the cylinder does not need be put
upside-down charge in liquid form.)
Stand the cylinder upside-down and charge.
Si37-701
Block " ".
Test Operation