34
MUL
TI V Hydro Kit Medium T
emperature (K2) Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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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
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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
Minimum Temperature for Freeze Protection
59°F - 23°F (+15°C to -5°C)
14°F (-10°C)
5°F (-15°C)
-4°F (-20°C)
-13°F (-25°C)
Methanol
6%
12%
16%
24%
30%
Ethylene Glycol
12%
20%
30%
-
-
Propylene Glycol
17%
25%
33%
-
-
Type
Antifreeze Concentration Level
(% by Weight)
10%
20%
30%
40%
50%
Methanol
0.998
0.997
0.995
0.993
0.992
Ethylene Glycol
0.996
0.991
0.987
0.983
0.979
Propylene Glycol
0.993
0.987
0.980
0.974
0.968
Type
Heating Antifreeze Concentration Level
(% by Weight)
10%
20%
30%
40%
50%
Methanol
0.995
0.990
0.985
0.979
0.974
Ethylene Glycol
0.993
0.985
0.977
0.969
0.961
Propylene Glycol
0.966
0.973
0.960
0.948
0.935
Table 14: Cooling Capacity Correction by % Antifreeze Chart.
Table 15: Heating Capacity Correction by % Antifreeze Chart.
Table 16: Water Pressure Drop Correction Factors.
Type
Antifreeze Concentration Level (% by Weight)
10%
20%
30%
40%
50%
Methanol
1.023
1.057
1.091
1.122
1.160
Ethylene Glycol
1.024
1.068
1.124
1.188
1.263
Propylene Glycol
1.040
1.098
1.174
1.273
1.405
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.
• 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.
• 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.
WARNING
