Page 8
506150−01 05/09
ABOVE
FINISHED
SPACE?
AUXILIARY DRAIN LINE
ALWAYS RUN AN OVERFLOW DRAIN LINE. IF NOT
POSSIBLE TO ROUTE OVERFLOW DRAIN LINE,
INSTALL FLOAT SWITCH. WIRE LOW VOLTAGE TO
SHUT DOWN COMPRESSOR PER INSTRUCTIONS.
NO
YES
EZ−TRAP®
EZT−226
CLEAN OUT
VENT
PRESS IN (DO
NOT GLUE)
VENT MUST
EXTEND ABOVE
HEIGHT OF COIL
DRAIN PAN BY TWO
INCHES (51MM)
1 X 3/4 X 3/4
REDUCING
TEE WITH
PLUG
J−TRAP
(91P90)
MAIN
SEC.
OPTIONAL
SAFETY
PAN
DRAIN PAN
WHEN A COIL IS LOCATED ABOVE FINISHED SPACE, A 3/4"
(19.1MM) OVERFLOW DRAIN LINE MUST BE INSTALLED AND
CONNECTED TO A SAFETY PAN OR TO THE SECONDARY
DRAIN OUTLET OF THE COIL.
TRAPS MUST BE DEEP ENOUGH TO OFFSET MAXIMUM STATIC DIFFERENCES.
(GENERALLY, TWO INCHES (51MM) FOR NEGATIVE PRESSURE COILS (BLOWER
AFTER COIL) TRAPS ARE REQUIRED ON ALL DRAIN LINES CONNECTED TO COIL.
ALTERNATE P−TRAP (49P66)
TO APPROVED DRAIN
DRAIN LINE SHOULD SLOPE A MINIMUM OF
ONE INCH PER 10 FEET (25MM PER 3
METERS)
Figure 9. Typical Condensate Drain Connection
NOTE − See outdoor unit instructions on how to flow
nitrogen through line sets.
1. Remove access panel.
2. Remove the refrigerant line caps from the refrigerant
lines.
3. Use a wet rag to protect TXV sensing bulb (or remove
it) when brazing suction line connections.
4. Place a wet rag against piping plate and around the
suction line connection. The wet rag must be in place
to guard against damage to the paint.
5. With the wet rag in place, position a field provided
elbow fitting to the air handler’s suction line and line
set. Start nitrogen flow before brazing.
6. After the procedure is completed then remove the wet
rag.
7. Place wet rag against piping plate and around the
liquid line connection. Position liquid line elbow to air
handler’s suction line and to line set. Start nitrogen flow
and begin brazing both connections and after
procedure is completed then remove both wet rags.
8. Refer to instructions provided with outdoor unit for leak
testing, evacuating and charging procedures.
9. Install access panel.
Table 2. Refrigerant Line Sets
CBX32M
Units
Liquid
Line No.
Vapor/
Suction Line
L10
Line Sets
L15
Line Sets
−018/024
3/8 in
(8 mm)
5/8 in
(16 mm)
L10−26
20 ft. − 50 ft.
(6 m − 15 m)
L15−26
20 ft. − 50 ft.
(6 m − 15 m)
−030, −036
3/8 in
(10 mm)
3/4 in.
(19 mm
L10−41
20 ft. − 50 ft.
(6 m − 15 m)
L15−41
20 ft. − 50 ft.
(6 m − 15 m)
−042, −048
3/8 in
(10 mm)
7/8 in.
(22 mm)
L10−65
30 ft. − 50 ft.
(9 m − 15 m)
L15−65
30 ft. − 50 ft.
(9 m − 15 m)
−060
3/8 in
(10 mm)
1−1/8 in.
(29 mm)
Field
Fabricated
Field
Fabricated
Installing the Condensate Drain
Before connecting drain line(s), check drain hole(s) to
verify that drain opening is fully open and free of any
debris. Also check to make sure that no debris has fallen
into the drain pan during installation that may plug up the
drain opening.
Connect main condensate drain and route downward to an
open drain or sump. Do not connect drain to a closed waste
system. Refer to figure 9 on page 8 for typical condensate
trap configuration.
