Unit installation

Piping
27
Figure 25 Gravity drain
Condensate Pump
• 1/2" copper sweat connection is provided on units with optional factory-installed condensate
pump
• Condensate pump is rated for approximately 400 gph at 10 feet total head
• Size piping based on available condensate head
6.1.2 Humidifier Supply Water—Optional Steam Generating Canister
• 1/4" supply line; maximum water pressure is 145psi (1000kPa)
• Fill valve is sized for pressure range of 30 to 120psi (207-827kPa)
• Do not supply steam generating humidifier with softened water
• Do not use hot water source
• Water conductivity must be in the range of 330-670 micro-siemens
6.1.3 Requirements of Systems Using Water or Glycol
These guidelines apply to the field leak checking and fluid requirements for field piping systems, includ-
ing Liebert chilled water, condenser (water or glycol) and drycooler circuits.
CORRECT
INCORRECT
UNIT
Internal
Drain
External
Drain
Continuous Downward Slope
Internal
Drain
UNIT
UNIT
External
Drain
Internal
Drain
External
Drain
These are external traps also, although
unintentional. Lines must be rigid enough
not to bow over top of other objects.
INCORRECT
Do Not Externally
Trap the Unit
DPN001556
Rev. 0