Bryant DURAPAC 551B - Manual (Page 7)

7
OPTIONS AND ACCESSORIES (cont)
LIGHT COMMERCIAL THERMIDISTAT
Field-installed, wall-mounted device combines temperature and
humidity control in one device. The dehumidifier output is used to
control the Perfect Humidity dehumidification package. The occu-
pied space humidity has a set point range between 50% and 90%
relative humidity and provides constant fan operation in occupied
mode.
BRYANT COMMERCIAL THERMOSTAT
Designed specifically for use with Bryant commercial systems, this
Bryant programmable thermostat features LED occupied/
unoccupied displays and setback mode which can override continu-
ous fan operation.
CONTROLLER
BAROMETRIC
RELIEF DAMPERS
OUTDOOR AIR
TEMPERATURE
SENSOR
GEAR-DRIVEN
DAMPER
ACTUATOR
ECONOMI$ER
PLUG
Factory-installed EconoMi$er utilizes a microprocessor-based con-
trol, gear drive damper system, low pressure drop characteristics,
built-in spring return (for close upon power loss), and an integral
barometric damper.
NOTE: EconoMi$er is available for vertical ductwork applications
factory installed.
A vertical EconoMi$er, 2-stage power exhaust and dedicated hori-
zontal EconoMi$er are available for field installation.
ECONOMI$ER (036-150) 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. When the sliding plate is closed, it provides a leakproof seal
which prevents ambient air from seeping in or conditioned air from
seeping out. It can be easily adjusted for 100% outdoor air or any
proportions of mixed air. Design includes standard dry-bulb control
and 30% barometric relief capability.
TIME GUARD® CONTROL
Time Guard II Control automatically prevents compressor from
restarting for at least 5 minutes after a shutdown. Accessory pre-
vents short cycling of compressor if thermostat is changed rapidly.
Time Guard II control mounts in the control compartment of unit.