Greenheck DGX Installation, Operation And Maintenance Manual page 3

Installation - Indoor Installation
Step 1 Install Hangers
Install threaded hangers from ceiling supports. When locating hangers, allow enough room to open access
panel(s). Two nuts must be used on the end of each threaded hanger. Ceiling supports are supplied by others.
See figure #1.
Ceiling
Ductwork
Supports
Step 2 Install Unit
Using sheet metal screws, attach the
weatherhood/thru-wall/filter section to the
blower/burner section. The flange on the
weatherhood/thru-wall/filter section should overlap
the flange on the blower/burner section.
Raise the assembled unit into place.
Using two nuts per hanger, fasten the unit supports to
the hangers under the unit. Appropriate unit supports,
such as the optional Greenheck hanging bracket kit
Hangers
or c-channel and angle iron (supplied by others)
Unit
should be used. See figure #1.
Supports
Using self-tapping screws, attach ductwork to unit.
Figure 1. Indoor Mounting
In order to prevent the unit from swinging and to
provide a safe environment for service and
NOTE!
maintenance, additional measures must be taken to
Two nuts must be used on each end of each
secure the unit in all directions.
threaded hanging rod for proper support.
NOTE!
Good duct practices should be followed for all ductwork. Ductwork should be installed in accordance
with SMACNA and AMCA guidelines, NFPA 96 and any local codes. Reference the CAPS submittal for
duct sizes.
Step 3 Seal Wall Opening
Sealant
Apply sealant around the perimeter of the
weatherhood to prevent water penetration and drafts
into the building. See figure #2.
Figure 2. Sealing Wall Opening
3