Specifications

JOHNSON CONTROLS
2-24
FORM 102.20-N1 (1109)
Installation
7. Each hood is to be centered over the width of
the opening. All hoods, especially those con-
taining barometric dampers, MUST be installed
square.
8. Seal each hood gutter to the unit panel with
Polyurethane Caulk provided.
9. When multiple hoods are installed in a stack
space the hoods approx. 1.5" apart so the bot-
tom hood will extend 6" below the bottom of the
opening.
10. Install optional mist eliminators.
a) Remove the clip(s) from the leading edge of
the hood.
b) Insert the proper size mist eliminator or lter
into the tracks.
c) Reinstall the clip(s) on the leading edge of
the hood.
OUTDOOR AIR TEMPERATURE AND/OR
HUMIDITY SENSORS
When Outside Air Hoods are shipped loose on units
that include Factory Packaged Controls, these sensors
will be dismounted and pulled back into the air handler.
The contractor is to nd them secured with tape inside
and put them through their respective penetration to
the exterior and mount them to the bracket provided.
FIG. 2-34 – HOOD INSTALLATION WITH OPTIONAL MIST ELIMINATORS
LD13783
Apply Caulk
Apply Butyl
Clip
Mist Eliminator
or Filter
HOOD INSTALLATION WITH OPTIONAL MIST
ELIMINATORS
See “Ship Loose Parts” for identica-
tion of gaskets and hardware.
1. Identify correct hood and respective location
(see example on Fig 5 “Loose Component ID
Labels” found in the Unit Identication section
of this Manual). Each hood is labeled for easy
identication.
2. Correct orientation is with the tracks or bird
screens to the bottom. The mounting anges are
predrilled.
3. Each hood is tted with a factory installed bird
screen unless mist eliminator option is selected.
4. Apply provided 3/16" x ¾" Butyl tape to the
predrilled hood anges and back wall angle that
contact the unit panels.
5. Use ¼"-14 x 1" Hex Head Self Drilling Screws
w/EPDM washer provided.
6. Each damper opening in the unit panels should be
completely covered by its respective hood. The
bottom of the hood should extend approximately
6" below the opening in the unit panel.