VAV-SVX08R-EN
19
Unit Installation
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Due to their weight, the VAV terminal units should be
suspended from the uppermost ceiling, independent of
the false ceiling grid. In fact, VAV terminal units are
primarily designed for installation in the plenum space
between the upper most ceiling and the false ceiling
grid below it. See “Weights,” p. 28 for unit weights.
Suspension devices are to be supplied by the installer.
Units must be installed level and upright. Failure to
level the unit properly may prevent proper operation of
the controls and/or terminal unit. Units are not
designed to be installed vertically. Consequently, this
will also void the U.L. ratings and any warranty on the
unit.
Single-Duct VAV Units
Figure 10. Single-duct hanging recommendations
Depending upon the size and weight of the single-duct
unit, it may be capable of being supported by the
ductwork that is connected to it. No hanger brackets
are provided on these units since the unit should be
supported by means of a hanger strap. The hanger
strap should be secured directly to the unit casing as
shown above.
• For cooling only single-duct units or single-duct
units with hot water coil, the unit may be rotated
180° for opposite side connections.
• For units with electric heat, the unit can be flipped
to either RH or LH connection orientation if model
number digit 22 Electrical Connections = F.
Dual-Duct VAV Units
Dual-duct units should be supported by either hanger
straps or by using a threaded rod in conjunction with
the hanger brackets that are provided on the unit.
Figure 11. Dual-duct hanger bracket locations
AIR
VALVE
AIR
VALVE
COOLING
HEATING
C
A
B
TOP VIEW
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