Temspec Unit Ventilator IOM 2023-07-05
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Dampers
All dampers for outdoor air come standard with a spring return actuator. Internal dampers such as
Face and Bypass dampers are non-spring return. If the unit has both an outdoor air damper and
return air damper, they will be mechanically linked (excluding VER units which have an economizer
damper and a return air damper). As the outdoor air dampers open, the return air dampers close. The
damper actuator manufacturer can vary. Please refer to the wiring schematic for the damper actuator
model type.
Powered Exhaust
Internal powered exhaust is an optional feature that is provided with our standard vertical series unit
ventilators. This feature comes with a fan and damper module that is mounted into the return air
section of the unit. Control should be set up by the temperature controls contractor to operate as an
on/off device as the outdoor air damper opens and closes.
For the Energy Recovery units, the exhaust fan is a standard option. It is located in the middle of the
unit near the Energy Recovery Wheel. The fan is standard two speed. Low speed during regular
wheel operation and a high speed during economizer mode.
Filtration
Typically, 1” or 2” disposable filters are provided in the unit with an extra set shipped loose for when
the unit is ready for start-up. Please refer to the Job Submittal for specific details on filter construction
and thickness. Below are sizes and quantity per unit for the different model types.
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