User`s manual

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13
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Table 3 — Accessory List
*See unit wiring book for proper installation instructions.
NOTE:
Two Time Guard II timers are required.
G. Optional Outdoor-Air Damper Installation
The outdoor-air hood and screen are attached to the basepan
at the bottom of the unit for shipping.
Assembly:
1. Determine quantity of ventilation required for build-
ing. Record amount for use in Step 8.
2. Remove filter access panel. Remove and save outdoor-
air opening panel and screws. See Fig. 16.
3. Separate hood and screen from basepan by removing
the 6 screws and brackets securing them. Save all
screws and discard brackets.
4. Replace outdoor-air opening panel and filter access
panel.
5. Place hood on front of outdoor-air opening access
panel. See Fig. 17 for hood details. Secure top of hood
with the 6 screws removed in Step 3. See Fig. 18.
6. Remove and save screws from sides of the manual
outdoor-air damper assembly.
7. Align screw holes on hood with screw holes on side of
manual outdoor-air damper assembly. See Fig. 17 and
18. Secure hood with screws from Step 6.
8. For proper quantity of ventilation air, adjust mini-
mum position setting of the damper blade by adjust-
ing the manual outdoor-air adjustment screws on the
front of the damper blade. See Fig. 16. Slide blade
vertically until it is in the appropriate position deter-
mined by Fig. 19. Tighten screws.
9. Remove and save screws currently on sides of hood.
Insert screen. Secure screen to hood using the screws.
See Fig. 18.
H. Optional Durablade Economizer Installation
The optional economizer hood assembly is packaged and
shipped in the filter section. Damper blades and control
boards are installed at the factory and the economizer is
shipped in the vertical discharge position.
NOTE: Horizontal discharge block-off plate is shipped with
the air hood package. If unit is to be used for vertical dis-
charge application, discard this plate.
ACCESSORY
Roof Curb (14 in.)
Roof Curb (24 in.)
Low Ambient Controls
Condenser Coil Hail Guard Assembly
LP (Liquid Propane) Kit
Manual Outdoor-Air Damper
Two-Position Damper
Durablade Economizer
EconoMi$er
Power Exhaust
Time Guard® II 5-Minute Recycle Timer*
Controls Upgrade Package
Solid-State Enthalpy Control
Differential Enthalpy Control
Flue Hood Protector Assembly
Flue Discharge Deflector
Low No
x
Kit
Condenser Coil Grille
OUTDOOR
AIR OPENING
PANEL
3 SCREWS
(SIDE)
SCREEN
LOCATION
(SCREEN
NOT SHOWN)
HOOD
SCREW
HOLES
(TOP)
Fig. 16 — Damper Panel with Outdoor-Air
Damper Installed
Fig. 17 — Outdoor-Air Hood Details
Fig. 18 — Outdoor-Air Hood