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Bryant 551A operation manual 31

Models: 551A

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Fig. 36 — Typical Wiring Schematic (551A180, 460v Shown)

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Bryant 551A operation manual 31

Contents

X. Step 10 — Install Humidistat for Optional CONTENTS— Install Outdoor-AirHood — Install All AccessoriesFig. 1 — Roof Curb Details Fig. 3 — Rigging Details Adapter Roof CurbFig. 4 — Base Unit Dimensions, 551A155 and Fig. 5 — Base Unit Dimensions, 551A240 Table 1 — Physical Data Fig. 6 — Air Distribution — Thru-the-Bottom III. STEP 3 — FIELD FABRICATE DUCTWORKIV. STEP 4 — MAKE UNIT DUCT CONNECTIONS V. STEP 5 — TRAP CONDENSATE DRAINFig. 10 — Condensate Drain Piping Details B. Field Control WiringFig. 11 — Field Power Wiring Connections Fig. 12 — Field Control Thermostat WiringTable 2 — Electrical Data Table 3 — Electric Resistance Heater Data —10——11— Fig. 13 — Optional Non-FusedDisconnect WiringVII. STEP 7 — MAKE OUTDOOR-AIRINLET ADJUSTMENTS Fig. 15 — EconoMi$er Damper Assembly — End ViewA.Outdoor Air Enthalpy Sensor Installation Table 4 — Heat Anticipator SettingsAdjustment Potentiometers VIII. STEP 8 — INSTALL OUTDOOR-AIRHOODAir Hood Cross-SectionalView E. CO2 Control Setup—13— Fig. 19 — Seal Strip LocationFig. 23 — Typical EconoMi$er Wiring G. Dry Bulb Changeover Set UpTable 5 — EconoMi$er Switchover Control Strategy Table 7 — Default Potentiometer Settings—15— H. Ventilation Air Minimum Position Set UpIX. STEP 9 — INSTALL ALL ACCESSORIES Fig. 24 — Typical EconoMi$er Sensor WiringFig. 25 — Wind Baffle Details —16—Fig. 26 — Motormaster I and Motormaster Humidistat Wiring Schematic 460V Unit Shown—17— Package Control Box—18— III. REFRIGERANT SERVICE PORTSV. INTERNAL WIRING XI. ACCESSORY ECONOMI$ER ADJUSTMENTD. Freeze Protection Thermostats —19——20— —21— —22— Table 11 — Fan Performance — 551A180—23— Table 12 — Fan Performance — 551A240Fig. 29 — Perfect Humidity Operation Diagram Table 13 — Accessory/FIOP Static Pressure in. wg—24— Table 14 — Perfect Humidity Dehumidification Table 15 — Fan RPM at Motor Pulley SettingsTable 16 — Evaporator Fan Motor Specifications —25—IV. EVAPORATOR FAN SERVICE AND REPLACEMENT SERVICEI. CLEANING III.EVAPORATOR FAN PERFORMANCE ADJUSTMENT Fig.Fig. 30 — Evaporator-FanPulley Alignment and AdjustmentMotor Section V. BELT TENSION ADJUSTMENT —27—VII. ECONOMI$ER ADJUSTMENT A. LED Indication VI. CONDENSER-FANADJUSTMENTFig. 33 — Condenser-FanAdjustment 551A155,180 Fig. 34 — Condenser-FanAdjustment 551A240D. High- and Low-PressureSwitches VIII. POWER FAILUREC. To Use The Cooling Charging Chart Fig. 35 — Cooling Charging ChartE. Freeze Protection Thermostat FPT XIV. REPLACEMENT PARTSXVI. OPTIONAL HINGED ACCESS DOORS —30——31— —32— Table 18 — Cooling Service Analysis TROUBLESHOOTING—33— Table 19 — EconoMi$er Troubleshooting Page ELECTRICAL TEMPERATURESI. PRE-START-UP II. START-UP