Mitsubishi Electric CMB-WM108V-AA Service Handbook page 33

[ I Read Before Servicing ]
3. Correction by antifreeze-liquid concentration
In HYBRID CITY MULTI system, antifreeze-liquid should be used to prevent the system from freezing. Refer to the following graphs
for the capacity correction by antifreeze-liquid. Refer to (1) for antifreeze-liquid concentration, (2) and (3) for capacity correction by
antifreeze-liquid concentration.
When adding antifreeze-liquid, be sure to perform the process in accordance with the relevant local laws and regulations.
(1) Antifreeze-liquid concentration
Use propylene glycol solution for antifreeze.
Refer to the following graph to estimate the antifreeze-liquid concentration required for freeze protection.
0
-5
-10
-15
-20
-25
-30
0 10 20
Antifreeze-liquid concentration [wt%]
(2) Capacity correction by antifreeze-liquid concentration (cooling)
PURY-(E)P200~500YLM-A1,PQRY-P200~500YLM-A, PURY-(E)P200~500YNW-A
1
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
0.9
0 10
Antifreeze-liquid concentration [wt%]
PURY-(E)M200~300YNW-A
1
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
0.9
0 10
Antifreeze-liquid concentration [wt%]
HWE1708A
30 40 50 60
20 30 40
20 30 40
70
1
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
0.9
50 0 10
1
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
0.9
50 0 10
- 24 -
20 30
Antifreeze-liquid concentration [wt%]
20 30
Antifreeze-liquid concentration [wt%]
40 50
40 50
GB