Roof Mounted Unit – Arrangement Dbc - Greenheck IG Installation, Operation And Maintenance Manual

Installation of Roof Mounted Unit
Arrangement DBC,
4. Apply Sealant
Apply an appropriate sealant around the perimeter of
the curb and duct adapter(s) to isolate fan vibration
and prevent water penetration.
Exhaust Duct Installed
Supply Duct with
Duct Adapter Installed
5. Install Exhaust Fan
Fasten exhaust fan to curb extension with self-tapping
sheet metal screws.
Exhaust Fan
Installing the exhaust fan prior to the supply unit will
allow for easier installation of options.
6. Install Exhaust Options
Install optional hinge kit with restraining cables and
grease trap with drain connection.
NFPA 96 requires that the exhaust fan be hinged.
6
Model IG / IGX Make-Up Air
continued
Sealant
Sealing Ductwork
Installing Exhaust Fan
NOTE
NOTE
7. Install Supply Unit
Use a crane and a set of spreader bars hooked to the
factory lifting lugs to lift and center the unit on the
extension/equipment support(s).
Use self-tapping sheet metal screws to fasten the unit
to the extension/equipment support(s).
The use of all lifting lugs and a set of spreader bars
is mandatory when lifting unit.
Be sure to complete the outdoor venting installation
instructions.
Some units come with the weatherhood attached
and step 8 may not apply.
8. Assemble and Attach Weatherhood
The weatherhood can now be assembled and/or
attached to the unit. Detailed assembly instructions
can be found with the weatherhood. If the optional
evaporative cooling module was selected, this step
does not apply, refer to the Installation Instructions
for the Optional Evaporative Cooling Module section,
page 7.
9. Seal Weatherhood Seam
Using an appropriate sealant, seal the seam between
the weatherhood and the unit.
Complete Combination Installation
Installing Supply Unit
NOTE
NOTE
NOTE
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