28
Figure 4 Recommended Condensate Trap Dimensions
Notes:
1. This trap (often referred to as a P-trap) is capable of handling static pressures equal to 4”
H
2
O which is the maximum static available for ceiling 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.
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