Trane Precedent YSJ072 Installation, Operation And Maintenance Manual page 42

Installation
The 6 to 12.5 tons condensate drain pan is convertible.
Refer to the ductwork section drawings in the Installation
chapter. It can be converted to drain condensate from the
front side of the unit or through the base.
To convert drain condensate out the front 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 and
rotate 180°.
4. Slide the condensate drain pan back into the unit. Align
the drain with the grommeted opening in the rear
support panel and push until the coupling is seated in
the grommet.
5. Replace the front support panel by aligning the panel
with tabs in the raceway. Align the condensate drain
pan support in the grommeted hole as the panel is put
in place.
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-inch 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 .
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
allow the horizontal run to sag causing a possible double
trap condition. This can result in condensate backup due to
air lock.
42
Figure 65. Condensate trap installation
Drain Pan Type Connection
CABINET
STD
A/B/C
3/4" NPT
D
1" PVC Socket
UNIT POST
Drain Pan Removal (Units with
Condensate Overflow Switch Option)
Before drain pan removal, the switch wire must be
disconnected from wire tie on panel and/or any tape before
drain pan can be removed.
Avoid catching the wire on the bottom of indoor coil or any
protrusion.
Note: When reversing the drain pan on some units, the
condensate overflow switch will need to be moved to
the second hole in its bracket to avoid contact with
headers or indoor coil.
Furnace Condensate Drain
Modulating gas units are equipped with a furnace
condensate drain system to evacuate any condensation
(water) that may form inside the heat exchanger during
cooling system operation. The unit does not condense
during heating operation. Neutralization is not necessary
as the condensate drainage is water only and is not acidic.
Filter Installation
The quantity of filters is determined by unit size. Access to
the filters is obtained by removing the filter access panel.
Note: Do not operate the unit without filters.
STAINLESS
3/4" NPT
1" NPT
FIELD SUPPLIED PIPING
1.5" MIN. (381 MM)
4"+ REQUIRED FOR
HIGHER STATICS
RT-SVX071D-EN
CLEANOUT
PLUG