CRTWOPOS010A00
CRTWOPOS011A00
Installation Instructions
SMALL ROOFTOP PRODUCTS
GAS/ELECTRIC HEAT AND HEAT PUMP UNITS
2 to 12---1/2 TONS (50/60 Hz) ACCESSORY
ADJUSTABLE TWO POSITION OUTDOOR AIR DAMPER
Read these instructions completely before attempting to install the
accessory outdoor air damper.
SAFETY CONSIDERATIONS
Installation and servicing of air--conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air--conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air--conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguishers
available for all brazing operations.
Recognize safety information. This is the safety--alert symbol
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which
will
result in
severe personal injury or death. WARNING signifies a hazard
which
could
result in personal injury or death. CAUTION is used
to identify unsafe practices which
may
result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which
will
result in enhanced installation, reliability, or
operation.
GENERAL
These 2 position outdoor air packages can be used in either a
vertical or horizontal airflow configuration. The damper assembly
travel can be adjusted to allow from 25% to 100% outdoor air for
the applicable rooftop unit.
PACKAGE USAGE AND CONTENTS
UNIT SIZE
PART NUMBER
PACKAGE CONTENTS
2 to 6 Tons
CRTWOPOS010A00
2 --- Hood side
1 --- Hood top
1 --- Hood divider
1 --- Aluminum filter
1 --- Bottom panel
1 --- Damper assembly
1 --- Hardware bag
7---1/2 to 12---1/2
Tons
CRTWOPOS011A00
2 --- Hood side
1 --- Hood top
1 --- Hood divider
1 --- Aluminum filter
1 --- Bottom panel
1 --- Damper assembly
1 --- Hardware bag
INSTALLATION
To install the outdoor damper, perform the following:
IMPORTANT
: Follow all applicable local and national electrical
codes when installing this accessory.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing accessory, disconnect power supply and
install lockout tag.
!
WARNING
1. Turn off unit power supply and install lockout tag. For gas
units, turn off the gas supply.
2. Determine quantity of ventilation air required for building.
Record amount of air for use in Step 10.
3. Remove filter access panel by raising panel and swinging
panel outward. Panel is now disengaged from track and can
be removed. No tools are required to remove filter access
panel. Remove the outdoor--air opening/indoor coil access
panel. (See Fig. 1.)
C07340
Fig. 1 -- Rooftop Unit Panels
(2--6 ton unit shown)
4. Assemble outside--air hood top, sides and divider as shown
in Fig. 2. Do not install hood at this time.
5. Install galvanized, insulated bottom panel per Fig. 3, with
the slot at the top of the panel. The lip of the slot should fit
behind the corner post as shown. Screw in place.
