Danfoss Optyma iCO2 Instructions Manual page 14

Instructions
6.2. Calculation of the charge quantity of condensing unit oil
Use the following equation.
Condensing unit oil quantity (cm
(*1) Standard condensing unit oil quantity (Charged at the shipment from factory.)
Condensing unit oil initial charge quantity
(*2) Piping condensing unit oil quantity
• This is calculated based on the specifications of connecting gas pipe (pipe size) and the length of each pipe. Where no branching pipe is used, take the
length of pipe to the farthest low pressure device as the pipe length. Where it is used, take the sum of the length of pipe to the pipe joint of farthest
low pressure device from first branching and the length of pipe to the pipe joint of second farthest device as the pipe length. Example of calculation
where there are branch pipes is as shown below.
Example of calculation
Farthest equipment in group a
Farthest equipment in group b
Farthest equipment in group c
Fig. 16
14 | AN405821998738en-000102 - 118A5495A
) = Standard condensing unit oil quantity*1 (cm
3
Group a
La3 La2
φ9.52 φ9.52
1m 3m
Group b
Lb4
Lb2
Lb3
φ9.52 φ9.52 φ12.7
1m 3m 10m
Group c
Lc4 Lc3 Lc2
φ9.52 φ9.52 φ12.7
1m 10m
1m
) + Piping condensing unit oil quantity *2 (cm
3
Low pressure device
La1
φ15.88
10m
Second branch
Lb1
L2
φ15.88 φ15.88
10m 10m
Lc1
φ15.88
10m
© Danfoss | Climate Solutions | 2023.02 | LCA012A024
Diamond Freeze MA68
1,830cc
Condensing unit
OP-UPAC015COP04E
First branch
L1
φ19.05
40m
)
3