Greenheck DG / DGX with Pilot Ignition (463555 IOM) (Pre-2008) - Manual (Page 3)

3
Installation - Indoor Installation
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.
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 or c-channel and
angle iron (supplied by others) should be used.
Using self tapping screws, attach ductwork to
unit.
In order to prevent the unit from swinging and to
provide a safe environment for service and
maintenance, additional measures must be taken
to secure the unit in all directions.
Step 3 Seal Wall Opening
Apply sealant around the perimeter of the
weatherhood to prevent water penetration and
drafts into the building.
NOTE!
Two nuts must be used on each end of each
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.
Sealant
Unit Supports
Ceiling Supports
Hangers
Ductwork
Indoor Mounting
Sealing Wall Opening
Floor Top Sides Ends
Insulated Units 0 inches 0 inches 0 inches 0 inches
Non Insulated Units 0 inches 6 inches 6 inches 6 inches
Clearance to combustibles is defined as the minimum distance required between the heater and adjacent combustible
surfaces to ensure the adjacent surface’s temperature does not exceed 90 degrees above the ambient temperature.
Recommended Minimum Service Clearances
Housing 32 and less 42 inches on the controls side of the unit
Housing 35 and higher 48 inches on the controls side of the unit
Clearances for component removal (such as evaporative cooler media) may be greater than the service clearances listed.
Clearance to Combustibles / Service Clearances