Installation, Operation and Maintenance Manual
VariCool EZ-Fit
7
Subject to change without notice.
40.20-IM (0118)
Condensate Drain
Each EZ-Fit evaporator has a condensate drain connection
in the base frame (Ref� Figure 1)� If the application contains
dual modules two (2) drain traps are required�
Traps will need to be connected to the 1-1/4” NPT drain
connection(s) (Ref� Figure 1)�
A condensate drain trap must be field fabricated and
installed� The purpose of the trap is to neutralize the negative
pressure created within the blower cabinet�
The negative pressure can vary from less than 1” up to 3”
column. The condensate trap must be of sufficient depth
in water column to permit the condensate to flow from the
drain pan. Failure to have a sufficient drain trap will cause
the condensate to overflow the drain pan or to cause the unit
to shut down on the drain pan overflow safety.
The “A” dimension (Ref� Figure 2) must equal or exceed the
negative static pressure developed by the supply air blower�
The “A” dimension will be unique for each unit application�
The trap must be 2-1/2” deep to maintain a water seal under
all operating conditions, especially during blower start-up�
It is highly recommended that the trap be primed with water
prior to start-up�
Each trap must be piped to a suitable waste drain�
Condensate Drain
1-1/4" NPT
Plugged
Removable
Cleanout
A
2�5
Min
3�5
4�276
1�047
Figure 1 - Condensate Drain Location
Figure 2 - Condensate Trap Dimensions
Summary of Contents for VariCool EZ-Fit 12
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