Indoor Unit - Greenheck IG Installation, Operation And Maintenance Manual

Installation of Indoor Unit
To prevent premature heat exchanger failure, do not
locate units where chlorinated, halogenated, or acid
vapors are present.
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.
2. Install Unit
Raise the unit into place. Using two nuts per hanger,
fasten the unit supports to hangers under the unit.
Appropriate unit supports, such as the optional
manufacturer 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.
Ceiling Supports
Hangers
Unit Supports
Indoor Mounting
Two nuts must be used on each end of each
threaded hanging rod for proper support.
WARNING
All factory-provided lifting lugs must be used when
lifting any unit. Failure to comply with this safety
precaution could result in property damage, serious
injury or death.
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.
3. Install Vent Piping
Refer to the Indoor Venting Instructions. Refer to your
unit submittal to determine the correct venting option.
Vent piping is supplied by others and not supplied
by manufacturer.
4
Model IG / IGX Make-Up Air
NOTE
Ductwork
NOTE
NOTE
NOTE
Installation of Arrangement DB / HZ
1. Install Curb and/or 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
unit supports are level, shim if necessary. Attach curb
to roof and flash into place. Attach the equipment
support(s) to the roof, remove metal cover, flash to
wooden nailer and reinstall cover.
Metal Cover
Equipment
Support
Roof Curb and Equipment Support
2. Install Ductwork
Good duct practices should be followed for all
ductwork. All ductwork should be installed in
accordance with SMACNA and AMCA guidelines,
NFPA 96 and all local codes. Reference the CAPS
submittal for ductwork sizes.
Supply Air Ductwork
(Arrangement DB only)
The use of a duct adapter is recommended on a
downblast (DB) arrangement to align the ductwork
with the supply unit. The duct adapter is only a
guide and is not to be used as support for the
ductwork.
3. Apply Sealant
Apply an appropriate sealant around the perimeter of
the curb and duct adapter(s) to isolate fan vibration
and prevent water penetration.
4. Install Unit
Use a crane and a set of
spreader bars
hooked to the
factory lifting lugs
to lift and center
the unit on the
curb/equipment
support(s).
Use self-tapping
sheet metal
screws to fasten
the unit to the
curb/equipment
support(s).
Roof Curb
Ductwork
NOTE
Setting Unit
®