Lowering Fan And Removing Fixtures (Downflow Ec Fan System); Downflow Unit Ec Fan Lowering - Emerson Liebert PEX Series User Manual

4. Water inlet and outlet pipe of chilled water (dual cooling unit)
Connecting condensate drain pipe of indoor unit
Refer to the corresponding content in 2.6.1 Piping For Air-Cooled Unit.
Connecting water inlet pipe of infrared humidifier
Refer to the corresponding content in 2.6.1 Piping For Air-Cooled Unit.
Connecting water inlet and outlet pipe of cooling water
The water inlet and outlet pipe of cooling water of the indoor unit are copper pipes with 35mm outer diameter, as
shown in Figure 2-29. Connect the pipes through direct welding at the site and make sure that the junction is
well-sealed.
Connecting water inlet and outlet pipe of chilled water (dual cooling unit)
Refer to the corresponding content in 2.6.1 Piping For Air-Cooled Unit.

2.7 Lowering Fan And Removing Fixtures (Downflow EC Fan System)

2.7.1 Downflow Unit EC Fan Lowering

After installation, you must lower all fans of the EC downflow unit before commissioning. You lower the fan using the
supplied hand winch. Each EC downflow unit is only equipped with one lowering tool, so you should select the
lowering mode according to the equipped lowering tool.
Note
Be careful when lowering the fan, avoid trapping your fingers and fan cables, and avoid foreign matter falling into the inlet ring
of the fan.
Lowering Fan Through Hand Winch Mode
The downflow unit has been equipped with a set of fan elevator assembly before delivery, including a hand winch, a
winch bracket, a hook, a sling, a winch limit and a handle in Figure 2-30, and also an L shaped lifting component in
Figure 2-31.
出水管 出水
Water inlet
Figure 2-29 Unit connections (water-cooled)
Liebert.PEX2 Series Air Conditioner User Manual
Chapter 2 Mechanical Installation
板式换热器 BPHE
进水管 Water outlet
进水
29