22
6. Replace evaporator access panel and supply air access
panels.
To convert drain condensate through the base of unit:
1. Remove evaporator access panel and supply air access
panels.
2. Remove the support panel that the condensate drain pan
exits through.
3. Slide the condensate drain pan out of the unit.
4. Place on a level surface in the position it was removed
from the unit.
5. Remove the plug knockout in the bottom of the drainpan
to convert it to through the base drainage.
6. Plug the original condensate drain opening with a field
supplied 3/4" NPT plug.
7. Slide the condensate drain pan back into the unit, align
the drain support with the grommeted opening in the rear
support panel and push until the support is seated in the
grommet.
8. Replace the front support panel by aligning the panel
with tabs in the raceway. Align the plugged condensate
drain pan coupling in the grommeted hole as the panel is
put in place.
9. Replace evaporator access panel and supply air access
panels.
A condensate trap must be installed at the unit due to the
drain connection being on the “negative pressure” side of
the fan. Install the P-Trap using the guidelines in Figure 5.
A condensate drain line must be connected to the P-Trap.
Pitch the drain lines at least 1/2 inch for every 10 feet of
horizontal run to assure proper condensate flow. Do not al-
low the horizontal run to sag causing a possible double-trap
condition which could result in condensate backup due to
“air lock”.
Figure 5
Condensate Trap Installation
Filter Installation
Each unit ships with one inch filters. The quantity of filters is
determined by unit size. Access to the filters is obtained by
removing the indoor fan access panel. To modify the unit’s
filter rack to accept two inch filters, remove the L-shaped
angle attachment screws and rotate the angles 90 degrees.
Reinstall the screws and insert new filters. Refer to the unit
Service Facts (shipped with each unit) for filter require-
ments.
Note: Do not operate the unit without filters.
Field Installed Power Wiring
An overall dimensional layout for the field installed wiring
entrance into the unit is illustrated in Figure 2. To insure that
the unit’s supply power wiring is properly sized and in-
stalled, follow the guidelines outlined below.
Installation