Horizontal And Downblast Discharge - Greenheck IGX Installation, Operation And Maintenance Manual

Installation Instructions for:
Roof Mounted
Arrangement HZ and DB
Step 1 Install Curb/Equipment
Support(s)
Position curb/equipment support(s) on the roof
(reference the CAPS submittal for placement of
curb/equipment support(s) in relation to the unit). Verify
that all unit supports are level, shim if necessary.
Attach curb to roof and flash into place. When attaching
the equipment support(s) to the roof, remove metal
cover, flash to wooden nailer and reinstall cover.
Step 2 Install Ductwork
Good duct practices should be followed for all ductwork
All ducts should be done in accordance with SMACNA
and AMCA guidelines.
Arrangement DB: The use of a duct adapter is
recommended on a downblast arrangement to properly
align the ductwork with the supply unit. The duct
adapter is only a guide and is not intended to be used
as support for the ductwork.
Attach and secure the ductwork using self tapping
screws.
Greenheck recommends attaching ductwork to collar
using a rubber duct section at the unit to minimize
vibration.
Step 3 Apply Sealant
Before installing unit, apply a sealant around the
perimeter of the curb and duct adapter(s) to seal and
isolate the fan and minimize vibration. Note: Supply
duct adapter applies to arrangement DB only.
Step 4 Install Unit
Use a crane and a spreader bar hooked to the factory
lifting lugs (as shown in the diagram) to lift and center
the unit on the curb/equipment support(s).
NOTE: THE USE OF ALL LIFTING LUGS IS
MANDATORY WHEN LIFTING UNIT.
Use self-tapping sheet metal screws to fasten unit to
the curb/equipment support(s).
Step 5 Assemble and Attach Weatherhood
The weatherhood can now be assembled and attached to the installed unit.
Assembly instructions are included with the weatherhood panels. If the optional
Evaporative Cooling module was selected, this step does not apply. Reference
the Installation Instructions for the Evaporative Cooling module.
Metal Cover
Equipment
Support
4
Roof Curb
Use spreader bar
and lifting lugs.
Figure 2