Emerson Chilled Water Series User Manual page 27

20 Chapter 2 Mechanical Installation
Infrared humidifier
water in connecting
pipe
Connecting pipe of
condensed water drain
pipe
Connecting water inlet pipe of infrared humidifier
Connect water pipes for the infrared humidifier. To facilitate maintenance, a strainer / non-return isolation
valve is fitted to the supply water pipe. The infrared humidifier reserves a copper pipe (OD: 6.35mm) as shown
in Figure 2-25. 1/4" copper screw nut is put at the end of the copper pipe. Please connect it with the 1/4" × 1/2"
converted copper thread in the attached bag. Connect it with pipes according to the site condition. Make sure
the connection is well sealed to prevent leakage. The pipe pressure is 100kPa ~ 700kPa.
Where the main pressure may rise above 700kPa, a pressure reducer should be fitted. Where the pressure
falls below 100kPa, a water tank and pump system should be used.
 Note
Main water supply connections must be made in accordance with local laws and regulations.
Stainless steel
double-screw bolt
Water out connector
Connecting chilled water inlet and outlet pipes
The chilled water inlet and outlet pipes are connected with the chilled water unit by welding, as shown in
Figure 2-26. Inlet and outlet pipes should be welded according to the labels on the unit. Please do not reverse
the connection. Chilled water inlet and outlet pipes can be connected through the bottom plate or the side
plate. For the pipe entrance, please refer to Figure 2-13, Figure 2-14 and Figure 2-15. The chilled water inlet
and outlet pipes should have soft connector at the unit connections. The chilled water inlet pipes should be
equipped with the water filter with over 60 meshes to facilitate the clearance of impurities in the pipes. The
chilled water inlet and outlet pipes need to be equipped with several isolation valves, which can cut off water
sources during maintenance. One of the isolation valves can be a balancing valve. Chilled water system with
a balancing valve would be more efficient and more accurate in controlling water distribution. For detailed
distribution, please refer to Figure 2-6.
Water pressure should be able to overcome the water pressure drop caused by all the components of water
system. Considering the possibility that water pressure drop would increase due to incrustation and
impurities resulted from long-time running of the system. Therefore, when choosing the head components
Figure 2-24 Connection of water in and out pipes
Heating over-temperature
protection switch
Amplification in A direction
Water tray fixing screw
(one at each side)
Water in pipe ODФ 6.35 mm
Φ
Figure 2-25
Liebert.PEX Chilled Water Series Air Conditioner User Manual
Cross connector
Hose clamp
Condensed water
tray connection
Condensed water
drain pipe connection
Overheat protective ralay
A direction
Water level regulator
Infrared humidifier
Infrared
humidifier water
tray conncetion
Condensed water
tray connection
Ceramic terminal base
Charge pipe
Water tray
Charge
electromagnetic
valve
Transport fastener
Water level sensor
Heating over-temperature
protection switch (at the
bottom of water tray)