Gree Hydro Box NRQR16L/A-T, Руководство пользователя

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Hydro Box
23
Fig.4.17
4.2.7 Anti-freezing measure
In countries where the inlet water temperature can be lower than 15
℃
, it’s necessary to use
approved antifreeze in the circulating water to protect the water pipes. Please consult your hydro
box supplier for a locally approved solution. Calculate the approximate volume of circulating water
in the system. (The hydro box is not included.) Calculate the required amount of antifreeze
according to the volume ratio recommended in the following table and add it to the circulating
water.
Type of antifreeze
Minimum temperature for freeze protection
15
℃
~ -5
℃
-10
℃
-15
℃
-20
℃
-25
℃
Ethylene glycol 12% 20%
30% - -
Propylene glycol 17% 25%
33% - -
Methanol 6% 12% 16% 24% 30%
Notes:
①
Use only one of the above antifreeze.
②
If antifreeze is used, pressure drop and capability degradation of the system can occur.
③
If antifreeze is used, corrosion may occur to the circulating water pipes, so be sure to use
corrosion inhibitors.
④
Please ensure that the antifreeze is used in accordance with local laws and regulations.
⑤
Antifreeze may be toxic and it is strictly forbidden to mix with domestic water.