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Bryant
operation manual
Typical Component Arrangement 551A180 Shown
Models:
551A
1
32
36
36
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36 pages
40.32 Kb
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Troubleshooting
Install
Default Potentiometer Settings
Field Control Wiring
Dimension
Problem Potential Cause Remedy
CO2 Control Setup
Belt Tension Adjustment
Service Cleaning
Temperatures
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Fig. 36 — Typical Wiring Schematic (551A180, 460v Shown) (cont)
Fig. 37 — Typical Component Arrangement (551A180 Shown)
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Contents
Contents
Safety Considerations
Installation Provide Unit Support
II. RIG and Place Unit
Roof Curb Details
Unit Maximum Dimensions Shipping Weight
Ft-in 155
180
240
Unit STD Unit ECONOMI$ER Corner DIM a DIM B DIM C Weight
551A
Ft-in 155 1575 714 36.3 407 185 375 170 383 174 410
1039 1054 559 180 1650 748 36.3 375 170 449 204 452
Base Unit Dimensions, 551A240
Physical Data
155 180 240
III. Field Fabricate Ductwork
IV. Make Unit Duct Connections
Trap Condensate Drain
551A180 and 240 Shown 551A155 Shown
NEC
Field Control Wiring
Unit Voltage
Electrical Data
FLA LRA MCA MOCP†
Electric Resistance Heater Data
Unit
Heater Maximum Minimum Heater Amps
PER
VII. Make OUTDOOR-AIR Inlet Adjustments
Optional Non-Fused Disconnect
Optional Convenience Outlet
Manual Outdoor-Air Damper
Heat Anticipator Settings
VIII. Install OUTDOOR-AIR Hood
Outdoor Air Enthalpy Sensor Installation
Unit Stage
CO2 Control Setup
Discharge Air Thermistor DAT
Dry Bulb Changeover Set Up
EconoMi$er Switchover Control Strategy
Default Potentiometer Settings
Mechanical Cooling Lockout
Motormaster I Control Installation 551A155 and 180 Only
Ventilation Air Minimum Position Set Up
IX. Install ALL Accessories
Motormaster III Control Installation 551A240 Only
Wind Baffle Details
Llsv
LPS
III. Refrigerant Service Ports
Internal Wiring
XI. Accessory ECONOMI$ER Adjustment
START-UP
Freeze Protection Thermostats
Units With Perfect Humidity Dehumidification Package
Fan Performance 551A155 With Standard Indoor Fan Motor
Watts Bhp Rpm 3750
Cfm Rpm Watts Bhp
Watts Bhp
551A180 15 Tons
4800
5100
5700
551A240 20 Tons
Watts Bhp Rpm
Bhp Rpm Watts 000
500
Accessory/FIOP Static Pressure in. wg
Drop
Fan RPM at Motor Pulley Settings
Evaporator Fan Motor Specifications
II. Lubrication
Service Cleaning
IV. Evaporator FAN Service and Replacement
Evaporator-Fan Pulley Alignment Adjustment
Belt Tension Adjustment
VI. CONDENSER-FAN Adjustment
VII. ECONOMI$ER Adjustment
VIII. Power Failure
IX. Refrigerant Charge
Filter Drier
XI. Protective Devices
XIV. Replacement Parts
XVI. Optional Hinged Access Doors
XII. Relief Devices
XIII. Control Circuit
Typical Wiring Schematic 551A180, 460v Shown
Typical Component Arrangement 551A180 Shown
Problem Cause Remedy
Troubleshooting
Cooling Service Analysis
EconoMi$er Troubleshooting
Problem Potential Cause Remedy
Page
General
Temperatures
Electrical
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