Hitachi YUTAKI M R32 Series - Page 55

55
PMML0600 rev.0 - 06/2022
5
SPACE HEATING AND DHW FOR YUTAKI M / YUTAKI HYDROSPLIT
DRAIN AND WATER PIPING
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
010203040506
07
0
Frost protection
% Volume propylene glycol coolant
Burst point acc. to DIN51583
Frost protection Freezing point acc. to ASTM D1177
Temperature (ºC)
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
010203040506
07
0
Frost protection
% Volume etylene glycol coolant
Temperature (ºC)
Burst point acc. to DIN51583
Frost protection Freezing point acc. to ASTM D1177
 NOTE
• Freezing point according to ASTM D 1177 is the temperature for the rst ice crystal formation.
• The requirements of table must be always compared with glycol manufacturer specications.
• Maximum concentration of glycol is 45%.
• If system is only prevented against bursting, pump must not be turned on (the liquid inside
might be still frozen)