7
SECTIONAL VIEW OF UNIT ON ROOF CURB
(Diagrams are for practical guidelines only)
DETAIL 'A'
* FIELD SUPPLIED
▲
!
WARNING
INSULATION MATERIALS MAY
BE COMBUSTIBLE
INSTALLATION continued
Where the supply or warm air duct passes
through a combustible roof, a clearance
of one inch must be maintained between
the outside edges of the duct and
combustible material in accordance
with National Fire Protection Association
Standard No. 90A. Provide flashings or
enclosure between structure and roof
and all joints must be sealed with mastic
roofing to ensure a watertight seal.
All roofing work should be performed by
competent roofing contractors to avoid
any possible leakage.
▲
!
CAUTION
SEE DETAIL "A"
COUNTER
ROOF
ROOFING
RUBBER VIBRATION
DUCT*
WOOD
CURB
ROOFING
CANT STRIP *
STRUCTURAL
RIGID
OUTSIDE AIR HOOD
For proper unit operation, the air hood must be opened at
start-up as shown below:
Remove shipping screws from each side of the hood in the
"closed" postion. Lift hood to the "open" position and
secure with sheet metal screws and seal both sides and
top of hood with silicone caulking.
Air hoods may vary according to unit size and options.
The illustration shown is for practical guidelines for all
outside air hoods.
Outdoor air intake adjustments should be made accord-
ing building ventilation or local code requirements.
APPLY
SILICONE CAULKING
ON TOP &
BOTH SIDES
OF AIR HOOD
AIR HOOD SHOWN IN THE OPEN POSITION
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