AAON M2-036 - Manual (Page 55)

55
Figure 20 - Supply Fan Banding
Waterside Economizer
Pre-cooling waterside economizer coil is
supplied without water piping. A kit to pipe
the coil in series with the condenser water
circuit along with a valve which diverts
condenser water to the coil or around the
coil is optional.
During economizer mode cool water passes
through the economizer and condenser in
series. During standard cooling mode water
bypasses the economizer coil and passes
through the condenser.
A p-trap must be installed on the coil drain
outlet, not to exceed 6” from the drain
connection. See the previous section on
condensate drain piping for additional p-trap
and drain information.
DRAIN PAN CONNECTION
With a waterside economizer coil a
separate drain connection is
included. Failure to use this separate
drain connection may result in water
backup and overflow of drain pan.
CAUTION