Water Circuit Preparation - LG ARNH963K2A2 Installation Manual

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Water Circuit Preparation

Water Quality
Water quality must comply with local or national codes. Be sure to read all cautions and warning in this section before adding antifreeze to
the Hydro Kit water circuit.
• Clean water pipes to remove sludge and scale.
• DO NOT charge or operate the Hydro Kit water circuit without the strainer core installed.
• Perform chemical treatment (done by the installer) to prevent rust.
Protection against freezing temperatures
At locations where water temperatures can drop below 59°F (15°C), use an approved antifreeze solution to protect the water pipes. Consult
your Hydro Kit unit supplier for locally approved solutions.
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.
Use Table 8 as guidance as to the appropriate type and amount of antifreeze to use.
Table 8: Antifreeze Type and Minimum Temperature for Freeze Protection
Type of Antifreeze
ethylene Glycol
Propylene Glycol
Methanol
• Use only one of the above recommended antifreeze solutions.
• Note that pressure drop and performance decreases when antifreeze is used.
• Note that corrosion can occur when using antifreeze. Add corrosion inhibitor.
• Check concentration of the antifreeze periodically in order to maintain correct percentage levels.
• Take care not to touch or handle antifreeze during installation or operation.
• Follow all cautions and direction for local laws pertaining to the usage and handling of antifreeze.
• Do not add antifreeze to heating only systems.
34
Minimum Temperature for freeze Protection
59°f - 23°f 14°f (-10°C)
(15°C - -5°C)
12% 20%
17% 25%
6% 12%
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG Life's Good" is a registered trademark of LG Corp.
5°f (-15°C) -4°f (-20°C)
30% -
33% -
16% 24%
-13°f (-25°C)
-
-
30%