Water Supply-Line Requirements For The Optional Humidifier - Liebert PX018 Installer's/User's Manual

Factory-installed Condensate Pump in Upflow Units
NOTE: Condensate pumps are factory-installed on upflow units. They are shipped separately to be
field-installed on downflow units.
If your upflow unit requires a condensate pump, the pump is factory-installed inside the unit and a 1/2-in.
copper condensate-discharge connection is provided on the unit.
• 208-V condensate pump rated for 5 GPM at 45 ft (18.9 l/m at 13.7 m) of total head pressure.
• 230-V condensate pump rated for 5 GPM at 48 ft (18.9 l/m at 14.6 m) of total head pressure.
• 460-V condensate pump rated for 5 GPM at 40 ft (18.9 l/m at 12.2 m) of total head pressure.
460-V condensate pump is also used on 380-V and 575-V units.
• Size discharge piping based on available condensate head.
Field-installed Condensate Pump for Downflow Units
NOTE: Condensate pumps are factory-installed on upflow units. They are shipped separately to be
field-installed on downflow units.
If your downflow unit requires a condensate pump, the pump is shipped separately to be field-installed
alongside the unit or beneath the raised floor. If installing beneath a raised floor, a minimum 11 in (280 mm)
floor height is required.
A 3/4-in. NPT-Female drain connection is provided on the unit.
• Drain is trapped internally. Do not trap external to unit.
• 208-V condensate pump rated for 5 GPM at 45 ft (18.9 l/m at 13.7 m) of total head pressure.
• 230-V condensate pump rated for 5 GPM at 48 ft (18.9 l/m at 14.6 m) of total head pressure.
• 460-V condensate pump rated for 5 GPM at 40 ft (18.9 l/m at 12.2 m) of total head pressure.
460-V condensate pump is also used on 380-V and 575-V units.
• Size the discharge piping based on available condensate head.

5.1.2 Water Supply-line Requirements for the Optional Humidifier

The unit may have one of the following optional humidifiers. Refer to the appropriate supply-line piping
requirements if a humidifier is included on your unit:
Infrared Humidifier:
• 1/4-in. supply line, maximum water pressure is 150 psi (1034 kPa).
• Size supply line for 1 gpm (3.8 l/m), with a minimum water pressure of 20 psi (138 kPa).
• Do not supply de-ionized water to the humidifier.
Vertiv | Liebert® PDX™ and PCW™ Installer/User Guide | 33