Daikin VRV Plus Series General Information Manual page 38

Si33-003.book Page 34 Monday, June 25, 2001 9:06 AM
Installation
3.2.7 Additional Charge of Refrigerant
Important points
1. The results of all calculations must be recorded. (Make a list.)
2. The refrigerant will need to be additionally charged whenever the distance between the outdoor unit
3. The additional charging operation should be carried out by input of liquid into the liquid pipes from a
4. When the additional charging operation cannot be satisfactorily completed use the action of the
Refrigerant HFC407C are non-azeotropic* refrigerants. Therefore, these refrigerants must be charged in the liquid
Charging state. When charging the refrigerant into equipment from the cylinder, turn the refrigerant cylinder upside
Instructions
down.
Important: Make sure that the refrigerant (liquid) is taken out from the bottom part of the cooling cylinder.
Do not take out the refrigerant (gas) at the upper part of the cooling cylinder for charging.
Caution Since some cooling cylinders differ in the internal mehanism, it is necessary to examine the cylinder
carefully. (Some cylinders have a siphon tube to eliminate the need for turning it upside down.)
Siphon tube
34
Operational steps
Use the length of the piping to
calculate the amount of
refrigerant required
and the most distant indoor unit is more than 10m.
charging cylinder following completion of the vacuum drying operation.
compressor to complete the additional charging during the test run.
Additional charge of
refrigerant
(V0995)
: http://splitoff.ru/tehn-doc.html
SiE33-003
General Information