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Vertiv I Liebert LPC I User Manual
2.9.1 Connecting the condensate drain pipe of the indoor unit
The condensate of the infrared humidifier and evaporator converge at a cross-connector
following which it is emptied using a drain pipe as reflected in Figure 2-19. The Outer
diameter of the pipe is 25mm. However, if the drain pipe is used by 3 or more units, the
minimal outer diameter of the pipe should be 40mm.
While connecting the drain pipe, ensure that the U bend is installed vertically and
the U shape is not distorted so that the condensate can be drained quickly in an
effective manner.
The water pipe must be resistant to heat above 90° C because the infrared
humidifier contains flowing hot water.
Refer to Figure 2-19 which depicts the connection of the drain pipe for condensate water.
Figure 2-19 Connection of drain pipe for condensate water
2.9.2 Connecting the water inlet pipe of the infrared humidifier
An isolation valve should be fitted to the water inlet pipe to facilitate maintenance. The
connection of the water inlet pipe must be sealed to prevent potential leakage. The infrared
humidifier has a copper pipe with an outer diameter of 6.35mm. There is a ¼” copper nut at
the end of the copper pipe to which we have connected the ¼” * ½” conversion copper thread
connector to avoid losing them.
• When the main pipe pressure rises over 700Kpa, a pressure reducer should
be fitted as ideally, the main pipe pressure should be in the range of
100Kpa-700Kpa.
• Also, when the main pipe pressure falls below 100Kpa, a water tank and
pump system must be used.
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