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.
Summary of Contents for 551A
Page 14: ...14 TYPICAL WIRING SCHEMATIC Single Fan Units Sizes 036 073 ...
Page 16: ...16 TYPICAL WIRING SCHEMATIC Sizes 155 300 ...
Page 29: ...29 BASE UNIT DIMENSIONS 558F036 072 0TFQ004 012 558F036 150 ...
Page 30: ...30 BASE UNIT DIMENSIONS 558F073 0TFQ004 012 558F036 150 ...
Page 31: ...31 BASE UNIT DIMENSIONS 558F090 102 120 150 0TFQ004 012 558F036 150 ...
Page 32: ...32 BASE UNIT DIMENSIONS 558F091 121 0TFQ004 012 558F036 150 ...
Page 74: ...74 BASE UNIT DIMENSIONS 551B036 072 0TFQ004 012 551B036 150 ...
Page 75: ...75 BASE UNIT DIMENSIONS 551B090 150 0TFQ004 012 551B036 150 ...
Page 133: ...133 BASE UNIT DIMENSIONS 558F180 210 0TFQ004 012 558F180 300 ...
Page 134: ...134 BASE UNIT DIMENSIONS 558F240 0TFQ004 012 558F180 300 ...
Page 135: ...135 BASE UNIT DIMENSIONS 558F300 0TFQ004 012 558F180 300 ...
Page 153: ...153 BASE UNIT DIMENSIONS 551A155 180 0TFQ004 012 551A155 180 ...