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Clearance Requirements
When installing, allow sufficient space for airflow clearance,
wiring, refrigerant piping, and service. For proper airflow,
quiet operation and maximum efficiency. Position so water,
snow, or ice from roof or eaves cannot fall directly on unit.
Refer to Table 1 for installation clearances.
Location
Service box
Top of unit*
Between units
Against wall
* Maximum soffit overhang is 36".
NOTE: At least one side should be unobstructed by a wall or
other barrier.
Table 1. Clearances
6"*
NOTE: See Table 1 for specific minimum clearance guidelines.
Figure 3.
DO LOCATE THE UNIT:
•
With proper clearances on sides and top of unit
•
On a solid, level foundation or pad (unit must be level
to within ± 1/4 in./ft. per compressor manufacturer
specifications)
•
To minimize refrigerant line lengths
DO NOT LOCATE THE UNIT:
•
On brick, concrete blocks or unstable surfaces
•
Near clothes dryer exhaust vents where debris
accumulates
•
Near sleeping area or near windows
•
Under eaves where water, snow or ice can fall directly
on the unit
•
With clearance less than 2 ft. from a second unit
•
With clearance less than 4 ft. on top of unit
Minimum Clearance
30"
48"
24"
6"
24"
30" around
Control
Box
Rooftop Installations
Install unit at a minimum of 6" above surface of the roof
to avoid ice buildup around the unit. Locate the unit
above a load bearing wall or area of the roof that can
adequately support the unit. Consult local codes for rooftop
applications.
If unit cannot be mounted away from prevailing winds, a
wind barrier should be constructed. Due to variation in
installation applications, size and locate barrier according
to the best judgment of the installer.
Torque Requirements
When servicing or repairing heating, ventilating, and
air conditioning components, ensure the fasteners are
appropriately tightened. Table 2 lists torque values for
fasteners.
To prevent stripping of the various caps used, the
appropriately sized wrench should be used and fitted
snugly over the cap before tightening.
When servicing or repairing HVAC components, ensure
the fasteners are appropriately tightened. Table 2 provides
torque values for fasteners.
Only use Allen wrenches of sufficient hardness (50Rc
- Rockwell Harness Scale minimum). Fully insert the
wrench into the valve stem recess.
Service valve stems are factory-torqued (from 9 ft-lbs
for small valves, to 25 ft-lbs for large valves) to prevent
refrigerant loss during shipping and handling. Using an
Allen wrench rated at less than 50Rc risks rounding
or breaking off the wrench, or stripping the valve stem
recess.
Parts
Service valve cap
Sheet metal screws
Machine screws #10
Compressor bolts
Gauge port seal cap
Table 2. Torque Requirements
Using Manifold Gauge Set
When checking the system charge, only use a manifold
gauge set that features low loss anti-blow back fittings.
Manifold gauge set used with HFC-410A refrigerant
systems must be capable of handling the higher system
operating pressures.
Page 8
IMPORTANT
IMPORTANT
Recommended Torque
8 ft.-lb.
11 NM
16 in.-lb.
2 NM
28 in.-lb.
3 NM
90 in.-lb.
10 NM
8 ft.-lb.
11 NM
31-5000749 Rev. 0
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