Carrier 52SC, Installation, Operating And Maintenance Instructions

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5
INSTALLATION
SLEEVE INSTALLATION
REQUIREMENTS
Reminder: Units are shipped without sleeve.
■ INSPECT WALL SLEEVE INSTALLATION — In a
replacement or retrofit situation, it is recommended
that a sleeve be used with a chassis from the same
manufacturer. Refer to Figures 5 and 6 for typical wall
installation and unit dimensions.
1. For lateral airflow applications, an accessory lat-
eral duct must be used. Refer to Figure 7.
2. The sleeve must be mounted so that it is level in
all directions. A
1
/
4
-in. pitch is built into the unit
chassis for proper condensate drainage. An acces-
sory drain kit is available if needed.
3. The sleeve should be caulked on all sides, includ-
ing both inside and outside of the building.
IMPORTANT: If more than 4 in. of the sleeve
projects into the room or the wall is less than 2 in.
thick, an accessory subbase must be used for sup-
port. Refer to Figure 8.
TYPICAL WALL INSTALLATION (52SC,SE,SQ)
NOTES:
1. Sleeve may be flush mounted to floor, and front panel may have to be notched
to accommodate service cord.
2. If more than 4 in. of sleeve projects into room an accessory subbase must be
used.
3. If wall is less than 2 in. thick, an accessory subbase must be used.
TYPICAL CURTAIN WALL INSTALLATION
(All Models)
WALL SLEEVE AND SLEEVE EXTENSION
(Field-Fabricated) (All Models)
NOTES:
1. Unit sleeve and sleeve extension (field-fabricated) should be connected
before installing in wall opening.
2. Sleeve extension is water-bearing. It must be watertight when installed
against unit sleeve. Use quality grade sealant on all butting flanges. Attach
both sections with bolts and nuts or self-tapping screws installed from unit
sleeve to extension. Cut drain slots in front and rear flanges of extension to
line up with drain openings in unit sleeve.
3. Install 2 center baffles inside sleeve extension to prevent recirculation of out-
door air circuit.
4. Leave
3
/
8
-in. roomside projection of extension and
5
/
8
-in. outdoor projection
of sleeve. This allows for unit casing clearance to finished wall plus ample
edging to apply weather sealant between unit sleeve/extension assembly
and wall opening.
5. Paint sleeve extension and seal corner and lap joints; clear all drain holes of
excess sealant, paint, etc., to permit free drainage.
6. Install quality flashing under unit sleeve and extension using quality sealant
between flashing and wall.
7. Install unit casing/extension assembly following standard practices. Seal
assembly to wall on all 4 sides, indoors and outdoors.
8. Make provision for a condensate drain extension tube for routing excess con-
densate from the wall sleeve through the sleeve extension to the building
exterior.
9. Attach grille to the outside of the sleeve extension (using field-supplied
fasteners).
10. Seal any gaps between grille and sleeve extension on all sides.
FIGURE 5 — TYPICAL WALL INSTALLATIONS