Daikin Clima-Flex CLIC STAND ALONE Series Installation, Operation And Maintenance Manual page 10

Figure 3. Pit installation.
COLD WATER PIPES
To prevent damage to the evaporator and possible failure of the chiller, a supply filter is required in the inlet water piping that con-
nects to this evaporator. This filter must be installed prior to operation of the chilled liquid pumps.
Field-installed water piping for the chiller should include:
A cleanable filter installed at the water inlet to the evaporator to remove debris and impurities before they reach the evaporator.
NOTE: Install the cleanable filter within 1,500 mm tubing length from the evaporator inlet connection and downstream of any
solder connections (no solder connections between the filter and evaporator). CLICSTAND ALONE models require a
filter with perforations no larger than 0.063" (1.6 mm) in diameter.
• A water flow switch must be installed in the horizontal piping of the supply water line (evaporator outlet) to prevent evaporator
freezing under low or no flow conditions. The flow switch can be ordered as a factory-installed option, as a field-installed kit, or can
be supplied and installed in the field.
• Piping for units with brazed plate evaporators should have a drain and vent connection at the bottom of the bottom connection piping
and at the top of the top connection piping, respectively, (see Figure 4) These evaporators do not have drain or vent connections due
to their construction. Purge air from the water system prior to unit start-up to provide adequate flow through the evaporator.
• A suitable support for piping, separate from the unit, to eliminate weight and stress on fittings and connections.
• An expansion tank and regulating valve to maintain water pressure.
• Suitable mechanical connections. All evaporators have.
• OGS type grooved water connections (adhering to AWWA C606) optionally with flanges. PVC piping should not be used.
Polyolester oil, commonly known as POE oil, is a synthetic oil used in many refrigeration systems and is present in this Clima Flex
product. POE oil, if it ever comes in contact with PVC/CPVC, will coat the inside wall of the PVC/CPVC pipe causing environmental
stress fractures. Although there is no PVC/CPVC pipe in this product, keep this in mind when selecting piping materials for your
application as system failure and property damage could occur. Consult the pipe manufacturer's recommendations to determine
suitable pipe applications.
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Installation and Application Information
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CAUTION
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WARNING
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