Page 1
INSTALLATION INSTRUCTIONS FOR OUTDOOR AIR DAMPERS AND OUTDOOR AIR
HOOD USED WITH 156-300S UNITS
507214-04
2/2019
Supersedes 507214-03
©
2019
OUTDOOR AIR DAMPERS
OUTDOOR AIR DAMPERS
Shipping and Packing List
13U04 Motorized Outdoor Air Damper
Package 1 of 1 contains:
1- Outdoor air damper (OAD) assembly
1- Bag assembly containing:
2-Wiring diagram D sections
1-P160 wiring harness
Outdoor air hood parts (same as 13U05 hood parts
except there are NOT two manual damper blades)
13U05 Manual Outdoor Air Damper
Package 1 of 1 contains:
2- Manual damper blades
Outdoor air hood parts*
1-Hood top
1-Bottom filter bracket
2-Front filter brackets
2-Hood sides
2-Filters
Bag assembly containing:
46-Self drilling screws
*When outdoor air assembly is factory-installed,
outdoor air hood parts are packaged separately and
shipped in the filter compartment. See figure 1.
WARNING
Improper installation, adjustment, alteration, ser
vice or maintenance can cause property damage,
personal injury or loss of life. Installation and ser
vice must be performed by a licensed professional
HVAC installer or equivalent, service agency, or the
gas supplier
CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal in
jury. Take care while handling this equipment and
wear gloves and protective clothing.
Application
Optional outdoor air dampers provide fresh outdoor air.
See table 1 for usage.
C1DAMP20C-1 Motorized Dampers:
Electro-mechanical units (no Unit Controller)-
The damper opens to a set position when the blower is
operating. To operate the damper only during the
occupied time period, an optional thermostat or energy
management system must be installed that provides an
occupied signal to the unit's thermostat connection.
Units equipped with an A55 Unit Controller-
The damper opens to a set position when the blower is
operating and an occupied signal is provided to the Unit
Controller
C1DAMP10C-1 Manual Damper:
Damper is manually operated; damper position is
manually set at installation and remains in that position.
Install Motorized Damper - C1DAMP20C-1
1- Disconnect all power to unit and open filter access
panel.
2- If damper is factory-installed, remove six screws
securing hood top to access panel. See figure 2. Retain
hood top and go to the
Outdoor Air Hood
section.
3- Remove and retain sheet metal screws securing
cover plate to the top rear access panel. Discard
cover plate. See figure 3.
TABLE 1
Damper Type
Unit
Model #
Part #
Cat. #
Motorized
156-300S
C1DAMP20C-1
613924-01
13U04
Manual
156-300S
C1DAMP10C-1
613924-02
13U05
