Water Pipe Installation / Pump Control / Quality Management - LG KCHH Series Installation Manual

WATER PIPE INSTALLATION / PUMP CONTROL /
QUALITY MANAGEMENT
Water Pipe Installation
• Appropriate pressure of the pipe flange connection is ≤145 psi.
• Water pipe size must be the same or larger than that of the chiller. When multiple chillers are manifolded together, piping is to be properly
sized and engineered by a licensed professional.
• To prevent the water pipe connections from sagging due to the load, install appropriate pipe supports.
• Position the water inlet pipe at the bottom of the water pipe system, and position the outlet pipe at the top of the water pipe system.
• If there is a risk of condensation, install insulation on the cold water outlet pipe (follow all applicable state and local energy and building
codes).
• To prevent the connected pipe from freezing during winter season, install the drain valve at the bottom of the pipe system.
Water Pump Control
If the water pumps do not operate for an extended period, internal corrosion is more likely.
Water Quality Management
Impurities in the water can influence chiller performance and life expectancy. The water must be tested and treated using a local water treat-
ment professional, and water quality must not fall below the standards listed in the table.
Table 4: Chiller Water Standards.
Particles
pH (77°F [25°C])
Conduction Rate (77°F [25°C] μs/cm)
Alkali Level (ppm)
Hardness (ppm)
Chlorine Ion (ppm)
Lactic Acid Ion (ppm)
Iron (ppm)
Sulfur Ion (ppm)
Ammonium Ion (ppm)
Silica (ppm)
58
Circulating Water
6.5 - 8.0
500 or below
100 or below
100 or below
100 or below
100 or below
0.1 or below
Must not be detected
0.5 or below
50 or below
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" is a registered trademark of LG Corp.
Water
Cold Water
6.5 - 8.0
200 or below
50 or below
50 or below
50 or below
50 or below
0.3 or below
Must not be detected
0.2 or below
30 or below