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Water Piping System Installation
Due to our policy of continuous product innovation, some specications may change without notication.
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Particles
Water
Circulating Water Cold Water
pH (77°F [25°C]) 6.5 - 8.0 6.5 - 8.0
Conduction Rate (77°F [25°C] μs/cm) 500 or below 200 or below
Alkali Level (ppm) 100 or below 50 or below
Hardness (ppm) 100 or below 50 or below
Chlorine Ion (ppm) 100 or below 50 or below
Lactic Acid Ion (ppm) 100 or below 50 or below
Iron (ppm) 0.1 or below 0.3 or below
Sulfur Ion (ppm) Must not be detected Must not be detected
Ammonium Ion (ppm) 0.5 or below 0.2 or below
Silica (ppm) 50 or below 30 or below
Table 11: Chiller Water Standards.
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.
WATER PIPE INSTALLATION / PUMP CONTROL /
QUALITY MANAGEMENT
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