Carrier 50TFQ008-012 Product Data page 8

Options and accessories (cont)
ACCUSENSOR™ II
Accusensor economizer controls help provide efficient, economical
economizer operation. The Accusensor I dry-bulb sensor mea-
sures outdoor temperature and is standard with the Durablade
economizer. The accessory Accusensor II solid-state enthalpy
control senses both dry and wet bulb of the outdoor air to provide
an accurate enthalpy reading. Accusensor II is available as a field-
installed accessory for the Durablade economizer. The accessory
Accusensor III differential enthalpy control compares outdoor tem-
perature and humidity to return-air temperature and humidity and
determines the most economical mixture of air. Accusensor III
is available as a field-installed accessory for the Durablade
economizer.
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ACCUSENSOR III
DURABLADE ECONOMIZER
Exclusive Durablade economizer damper design saves
energy while providing economical and reliable cooling. A
sliding plate on the face of the economizer controls the
amount of outdoor air entering the system. Closed, it pro-
vides a leakproof seal which prevents ambient air from seep-
ing in or conditioned air from seeping out. It can be easily
adjusted for 100% outdoor air or any proportions of mixed air.
Like the base unit, the economizer is easily converted for
horizontal discharge applications.