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Unit Information
Single Duct VAV Units
The basic unit consists of a sheet metal casing with an
air valve, which is used to modulate the air being
delivered into the occupied zone. The unit is designed
to modulate either cooling or heating air between 40°F
and 140°F (4.44°C and 60°C). Air enters the air valve
through the round or rectangular inlet and exits into
the sheet metal casing to be distributed to the zone
either through integral round outlets in the casing or
through rectangular duct attached to the discharge of
the unit.
The basic unit can also be ordered with factory-
mounted electric or hot water heating coils attached to
the discharge.
These re-heat units are used primarily to reheat air-to-
zone temperature when the load in the occupied space
is low.
Primary air is modulated through the VariTrane™ air
valve by rotating the damper blade. All air valves have
a round/rectangular inlet for easy fit-up with incoming
duct work.
VAV-SVX08R-EN
Typical Single Duct VAV Units
Figure 1. Typical single duct unit; VCCF VCWF, VCEF
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