Instructions
14 | AN405821998738en-000102 - 118A5495A
© Danfoss | Climate Solutions | 2023.02 | LCA012A024
6.2. Calculation of the charge quantity of condensing unit oil
Use the following equation.
Condensing unit oil quantity (cm
3
) = Standard condensing unit oil quantity*1 (cm
3
) + Piping condensing unit oil quantity *2 (cm
3
)
(*1) Standard condensing unit oil quantity (Charged at the shipment from factory.)
Diamond Freeze MA68
Condensing unit oil initial charge quantity
1,830cc
(*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.
Low pressure device
Farthest equipment in group b
Group b
Farthest equipment in group a
Farthest equipment in group c
First branch
Second branch
L1
Lb1
φ15.88
10m
φ19.05
40m
Example of calculation
Condensing unit
OP-UPAC015COP04E
Lc1
φ15.88
10m
Lc2
φ12.7
10m
Lc3
φ9.52
1m
Lc4
φ9.52
1m
φ9.52
1m
Lb4
φ9.52
3m
Lb3
φ12.7
10m
Lb2
L2
φ15.88
10m
La3
φ9.52
1m
La2
φ9.52
3m
La1
φ15.88
10m
Group a
Group c
Fig. 16