Direct Gas Make-Up Air
9
6. Install Exhaust Fan Options
Install hinges (an optional hinge kit is available from
manufacturer) with restraining cables and optional
grease trap with drain connection.
7. Install Supply Unit
Use a crane and a set of spreader bars hooked to the
factory lifting lugs to lift and position the unit on the
curb extension and equipment support(s). The use of
all lifting lugs and a set of spreader bars is mandatory
when lifting unit.
Fasten the unit to the curb extension and equipment
support(s) using appropriate methods. The installer
is responsible for determining appropriate support
and fastening methods to ensure compliance with all
applicable codes.
Exhaust Fan
Installing Exhaust Fan
5. Install Exhaust Fan
Fasten exhaust fan to curb extension using appropriate
methods. Installing the exhaust fan prior to the
supply unit will allow for easier installation of options.
NFPA 96 requires the exhaust fan to be hinged. Follow
instructions included with the exhaust fan.
Installing Supply Unit
Complete Combination Installation
Installation
Outdoor Unit Mounting
8. Assemble and Attach Shipped loose Modules
Using sheet metal screws, assemble optional shipped
loose modules. Fasten the cover seams and vertical
panels on each module securely.
Some weatherhoods may ship disassembled. Detailed
assembly instructions ship with the weatherhood.
If an optional evaporative cooling module is included,
reference
Installation, Optional Component Mounting,
Evaporative Cooling Module
section in this Installation,
Operation and Maintenance Manual for more
information.
The installer is responsible for ensuring that the unit
fastening methods are sufficient to account for the
weight and size of these additional modules.
9. Seal Seam(s)
Using an appropriate sealant, seal the seam(s) between
each shipped loose module and weatherhood.
Combination Curb
(continued)
