Condensate Trap - Data Aire DAPA-2.5 Installation, Operation & Maintenance Manual

Condensate Trap

Probably the most misunderstood portion of a condensate drain system is trap installation. The primary
purpose of a condensate trap is to prevent air from being drawn back into the unit during operation.
Traps must be installed in a manner that will stop the air from passing through, but still allow the
condensate to drain from the condensate pan.
Therefore, a trap (field supplied and installed) must be fabricated into the ceiling unit drain system
external of the evaporator section. In order to eliminate air trapping, an air vent must be used to allow
air to exit. Venting the drain after the first trap is recommended.
Trap Dimensions shows the recommended dimensions for fabricating a proper trap:
NOTICE: Condensation formation and frequent humidifier flushing are normal
functions of this equipment. Proper drain connections must be made to ensure
proper removal. Unit will require water connections for condensate removal
and possibly for humidifier makeup water, condenser water, chilled water
and/or hot water. Installation of units above equipment that could sustain
water damage should be avoided.
WARNING: The condensate drain MUST be connected to an external
drain line (provided by others) before unit start up.
NOTICE: Clogged or leaking drain lines can cause damage to the equipment
and building.
Drain lines must be inspected regularly and maintenance must be performed
to ensure that drain lines are clear and condensation runs freely through the
drain system. The lines must be clear and free of obstructions and in good
condition with no visible sign of damage or leaks.
This unit also requires an external water supply to the humidifier.
Improper installation, application and service may result in water leakage from
the unit. Water leakage can result in severe property damage and loss of
critical data center equipment.
Do not locate unit directly above any equipment that could sustain water
damage. It is recommended to install leak detection equipment for unit and
supply lines.
Figure 4 Recommended Condensate
27