UPDATED A5 Panasonic technical handbook F 2025 - Flipbook - Page 126
ECOi VRF MF3 3-Pipe Additional Refrigerant Charge- Example
U-16MF3E8
U-16MF3E8
U-16MF3E8
3-Pipe MF3 Additional Refrigerant Charge Information
Main unit
Sub unit 1
Sub unit 2
Additional liquid pipework lengths
Metre
kg/m
Sub-total
1/4
15
0.026
0.39
3/8
15
0.056
1/2
15
5/8
U-**MF3E8
Required Amount of Additional Refrigerant Charge
= [ (Amount of additional refrigerant charge per metre of each size of liquid tube x its tube length)+(...)+( ...)]
+ [ (Amount of additional refrigerant charge per metre of each size of discharge tube x its tube length)+(...)+( ...)]
+ [(Necessary amount of additional refrigerant charge per outdoor unit)+(...)+( ...)]
Additional discharge pipework lengths
Metre
kg/m
Sub-total
1/2
15
0.012
0.18
0.84
5/8
15
0.021
0.315
0.128
1.92
3/4
15
0.031
0.465
15
0.185
2.775
7/8
15
0.041
0.615
3/4
15
0.259
3.885
1 1/8
15
0.071
1.065
7/8
15
0.366
5.49
1 3/8
15
0.089
1.335
1 1/8
15
0.49
7.35
22.65
1 5/8
15
0.126
1.89
5.865
Liquid Pipework Sub-total
Liquid Pipework Sub-total
Additional Outdoor Charge
Outdoor Unit 1 U-16MF3E8
Outdoor Unit 2 U-16MF3E8
Outdoor Unit 3 U-16MF3E8
Outdoor Unit Sub-total
7.4
7.4
7.4
22.2
Additional
50.72
Refrigerant Charge
Outdoor Base Charge
F - GAS REGULATIONS
Total system charge must be
clearly stated on the outdoor
unit label.
U-16MF3E8
8.3
Outdoor Unit 2
U-16MF3E8
8.3
Outdoor Unit 3
U-16MF3E8
8.3
Outdoor Unit 1
Outdoor Unit Sub-total
126
24.9
Total
Refrigerant
Charge
75.62
