Antifreeze Additives - LG MULTI V HYDRO KIT ARNH963K2A4 Installation Manual

INSTALLING THE WATER CIRCUIT

Antifreeze Additives

The water circuit guidelines and diagrams are for illustrative purposes and are to be used for references only; not all components and accessories
local, state, and federal codes.
Antifreeze Additives
At locations where water temperatures can drop below 59°F (15°C), or if the water flowing through the Hydro Kit heat exchanger has the
potential to freeze, an antifreeze agent such as methanol, ethylene glycol, or propylene glycol must be added to the water circuit. Consult the
Hydro Kit system design engineer and all applicable local, state, and federal codes.
To add the right amount of antifreeze:
• Calculate the approximate volume of water in the system.
• Add antifreeze solution to the Hydro Kit water circuit.
Table 13: Antifreeze Type and Minimum Temperature for Freeze Protection
Type
Methanol
Ethylene Glycol
Propylene Glycol
The antifreeze will reduce the ability of the Hydro Kit to exchange heat energy, and this reduction must be taken into account. See tables
below for cooling and heating capacity and water pressure drop correction factors. See also the Hydro Kit Engineering Manual.
Table 14: Cooling Capacity Correction by % Antifreeze Chart.
Antifreeze Concentration Level
Type
10%
Methanol 0.998
Ethylene Glycol 0.996
Propylene Glycol 0.993
Table 16: Water Pressure Drop Correction Factors.
Type
10%
Methanol 1.023
Ethylene Glycol 1.024
Propylene Glycol 1.040
WARNING
• Follow all warnings before adding antifreeze to the Hydro Kit water circuit. Follow all local, state, and federal laws pertaining to the use and
handling of antifreeze. If not, it will result in physical injury due to toxic exposure.
• Do not touch the antifreeze during installation or operation. It will result in physical injury due to toxic exposure.
• Follow all notes in this section before adding antifreeze to the Hydro Kit water circuit. Follow all local, state, and federal laws pertaining to
the use and handling of antifreeze.
• Use only one of the listed antifreeze solutions.
• Pressure drop and performance decreases when antifreeze is used.
• Corrosion can still occur when using antifreeze. Add corrosion inhibitor.
• Periodically check antifreeze concentration to maintain the correct percentage levels.
• If the Hydro Kit is to be used in cooling applications, antifreeze must be added to the water circuit to prevent freezing and burst pipes.
After the antifreeze is added to the water circuit, set DIP Switch No. 2 to ON (on the Hydro Kit PCB DIP Switch Group 3), and disconnect
the Short Key. See the Hydro Kit DIP Switch setting pages in the Pre-Commissioning section for information.
34
59°F - 23°F (+15°C to -5°C)
6%
12%
17%
(% by Weight)
20% 30% 40%
0.997 0.995 0.993 0.992
0.991 0.987 0.983 0.979
0.987 0.980 0.974 0.968
Antifreeze Concentration Level (% by Weight)
20% 30%
1.057 1.091
1.068 1.124
1.098 1.174
Due to our policy of continuous product innovation, some specifications may change without notification.
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Minimum Temperature for Freeze Protection
14°F (-10°C) 5°F (-15°C)
12% 16%
20% 30%
25% 33%
Table 15: Heating Capacity Correction by % Antifreeze Chart.
Type
50%
Methanol
Ethylene Glycol
Propylene Glycol
40%
1.122
1.188
1.273
-4°F (-20°C)
24%
-
-
Heating Antifreeze Concentration Level
(% by Weight)
10% 20% 30%
0.995 0.990 0.985
0.993 0.985 0.977
0.966 0.973 0.960
50%
1.160
1.263
1.405
-13°F (-25°C)
30%
-
-
40% 50%
0.979 0.974
0.969 0.961
0.948 0.935