Step 3 - Mount Unit; To Mount Unit - Carrier 40QA Installation, Start-Up And Service Instructions Manual

2. Locate the thermostat in an area which is not subjected to
drafts or direct sunlight through windows. Locate ther-
mostat on an interior wall whenever possible.
3. Allow sufficient clearance for airflow, wiring, refrigerant
piping, and servicing unit (Fig. 3 and 4).
4. Make sure the unit is easily accessible to electrical power.
5. Run refrigerant piping as directly as possible, and avoid
any unnecessary turns or bends.
6. Condensate piping can be directed through the inside wall
to an approved drain or straight outside.
NOTE: The piping hole for condensate line must slope at
a minimum pitch of 1 ⁄ in. per foot to ensure proper drain-
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age. If proper pitch cannot be achieved, install accessory
condensate pump at this time.
Step 3 — Mount Unit —
and dimensions. Use mounting template included inside box
to locate mounting bolt holes, piping holes, electrical con-
nections, and accessory outdoor-air intake, if used.
Select proper type of hardware from the guidelines below.
See Fig. 5.
Solid structure in ceiling must be used due to the weight
of the unit.
Wooden Structure — Install hanging bolts on a square wooden
piece placed over beams.
Newly Built Concrete Slab — Install hanging bolts with in-
serts, embedded bolts, etc.
Metal Structure — Install hanging bolts utilizing an existing
angle or by installing a new support angle.
Previously Built Concrete Slab — Install hanging bolts with
expansion anchor.
Fig. 4 — 40QA Clearances
Refer to Fig. 4 for clearances
Fig. 5 — 40QA Unit Mounting Methods
(Hardware is Field Supplied)

TO MOUNT UNIT:

1. Remove mounting bracket and reinstall the 2 hex-head
bolts (factory supplied) into each side of indoor unit as
shown in Fig. 6. Allow approximately 3/8-in. space be-
tween bolt head and unit.
2. Determine installation position, paying particular atten-
tion to piping lengths, wiring connections, clearances, etc.
See Fig. 3 for connection locations, Fig. 4 for clearances,
and Fig. 7 and 8 for bolt locations.
3. Open knockout if right-side piping connections are re-
quired (Fig. 9), by removing the pre-slit portion in the
rear of the right side panel with a saw or cutter knife.
NOTE: If accessory fan coil unit louver guard is used, in-
stall at this time. Refer to installation instructions packaged
with this accessory.
4. Mount hanging brackets on ceiling (Fig. 10) for either
concealed or exposed bolt hanging position.
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