A.O. Smith Voltex Installation Instructions And Use & Care Manual page 6

Table 2
ITEM
LOUVERED GRILL
CONFINED SPACE
CONFIGURATION
(door or wall)
MINIMUM SPACE
(cubic feet)
EXAMPLE ROOM SIZE
8' x 7.6' x 10'
H X L X W (feet)
Installation
Installation requires ability equivalent to that of a qualified HVAC
installer. Installation skills such as air supply, venting, and duct
installation are required. If you are not qualified and licensed or
certified as required by the authority having jurisdiction to perform
a given task do not attempt installation. Contact a local HVAC
contractor to perform the installation.
Installation must comply with all national, state and local building
codes and agencies having jurisdiction. Check with your local
building code authority if you have any questions regarding code
compliance.
1. Inlet air is derived through louvered grill(s) installed in a door or
wall between the installation space and another space inside
the building structure. The space from where inlet air is derived
must be a minimum of 750 cubic feet. See Figure 4.
2. Installation is permitted in confined spaces between 750 and
610 cubic feet of space using one louvered grill or in spaces
between 610 and 460 cubic feet using two louvered grills. See
Figure 4 and Table 2.
3. For installation in confined spaces of less than 460 cubic feet the
accessory Outlet Duct Kit (PN 9910006000) is required. With
this kit installation is permitted in confined spaces between 460
and 400 cubic feet with one louvered grill or in spaces between
400 and 128 cubic feet with two louvered grills. See Figure 4
and Table 2.
4. Minimum louvered grill size is 16" x 24" for each grill installed.
Fully louvered doors are an acceptable substitute for louvered
grill(s) if the louvered area of the door is not less than the total
required area the grill(s) would provide.
5. Follow the instructions included with the Outlet Duct Kit for the
included duct adapter and ductwork.
6. Eight (8) inch flexible ducting is required but not supplied in the
Outlet Duct Kit. Suitable ducting is readily available at home
centers or HVAC supplies.
7. Duct collars and boots may also be required but are not
supplied with the Outlet Duct Kit. Suitable collars and boots are
readily available from home centers or HVAC supplies.
8. The maximum length of duct allowed is 10 feet. This maximum
length must not be exceeded under any circumstances.
9. Ducting should be installed as straightly as possible; there
must be no kinks or flattening of the ductwork.
10. The Outlet Duct Kit and connected ductwork must redirect
outlet air from the unit to a location other than the confined
installation space. The alternate location to where the outlet air
is redirected must be a minimum of 750 cubic feet.
6
WITHOUT DUCTWORK
610 460
8' x 5.75' x 10'
WITH 8 INCH FLEXIBLE DUCT
AND OUTLET DUCT KIT
400 128
8' x 10' x 5' 8' x 4' x 4'
Breathing Hazard - Carbon Monoxide Gas
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
11. The outlet air from a unit installed in a garage or drawing
inlet air from a garage or any area where solvents or other
chemicals that emit potentially harmful fumes are stored or
automobiles are located must never be ducted to any other
space inside the building structure. This would include all
occupied and unoccupied spaces such as attics or basements.
Potentially harmful fumes and vapors could be introduced into
living spaces.
12. A duct termination or grill is required at the end of the duct
run but not supplied with the Outlet Duct Kit. Suitable duct
terminations and grills are readily available from home centers
or HVAC supplies. Terminations must be fitted with screens
or designed to prevent rodents, other pests and debris from
entering the ductwork. If terminated outdoors or to another
space where water or moisture may enter the ductwork,
terminations designed to prevent water or moisture infiltration
must be used.
13. If outlet ductwork is terminated through a ceiling into an
attic space provision must be made to ensure the ductwork
terminates well above the insulation line in the attic to prevent
insulation from entering the ductwork. A short section of 8 inch
round metal duct may be used with a suitable duct termination.
Overall duct length, including flexible and metal duct must not
exceed 10 feet.
14. Ductwork that transitions through walls or ceilings must be
properly sealed to prevent rodent, other pests or moisture
infiltration.
Do not duct air from a garage or other
space where potentially harmful fumes
from solvents, chemicals or exhaust
from automobiles are present into any
other space in the building structure.
Gas and carbon monoxide detectors
are available.