gForce Ultra IOM
34
Therefore, a trap (field supplied and installed) must be fabricated into the 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. Figure 10 Recommended Condensate Trap
Dimensions shows the recommended dimensions for fabricating a proper trap:
Figure 10 Recommended Condensate Trap Dimensions
NOTES: Unless otherwise specified by job specific documentation:
1. This trap (often referred to as a P-trap) is capable of handling static pressures equal to 4”
(200 mm) H
2
O which is the maximum static available for wall units. If the unit fans are
standard, there is no need to consider different dimensions but if higher total static pressure
is expected, more vertical drop is required.
2. Some applications have no convenient means of allowing a gravity drain. In this case, a
condensate pump can be used. These are shipped loose.
3. Condensate pumps that ship loose or are field provided, typically require a dedicated 110-
volt power source.
4. Field pipe connections must be made to the pump discharge connection.
5. A check valve must be installed to prevent short cycling. Pumps must be located below the
condensate drain pan level.
To Next Page
Loading...
