Manuals / Bryant / Household Appliance / Air Conditioner

Bryant 551C 551B,C, Humidistat Wiring 208/230-VUnit Shown, Damper Panel with Manual Outdoor-Air

Models: 551B

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LEGEND

	LEGEND
CB	— Circuit Breaker	Terminal (Unmarked)
CR	— Cooling Relay	Terminal (Unmarked)
CR	— Cooling Relay
DHR	— Dehumidify Relay	Splice
DSV	— Discharge Solenoid Valve	Factory Wiring
HR	— Heater Relay	Factory Wiring
LPS	— Low Pressure Switch	Field Control Wiring
LSV	— Liquid Solenoid Valve	Field Control Wiring
LTLO	— Low Temperature Lockout	Field Power Wiring
	Field Splice	Field Power Wiring
	Field Splice
	Fig. 15 ---Typical Perfect Humidityt Adaptive Dehumidification System				C06128

	Humidistat Wiring (208/230-V Unit Shown)
LCT		ROOF TOP UNIT
R		R
C		C
Y1		Y1
Y2		Y2
G		G
W1		W1
W2		W2	CB
DEHUM	R1		CB
OC		PINK	3.2 AMPS	RED
OC	TSTAT WIRES				24 V


	R1	PINK	LTLO	PINK FROM
	LEGEND		LTLO

					PERFECT HUMIDITY SYSTEM
CB — Circuit Breaker					PERFECT HUMIDITY SYSTEM
CB — Circuit Breaker					LLSV

LCT — Light Commercial Thermidistat™ Device

LLSV — Liquid Line Solenoid Valve

LTLO — Low Temperature Lockout

PERFECT HUMIDITY SYSTEM

C06360

Fig. 16 ---Typical Rooftop Unit with Perfect Humidity

Adaptive Dehumidification System with Thermidistat Device

OUTDOOR

AIR OPENING

PANEL

3 SCREWS (SIDE)

C06130

Fig. 17 ---Damper Panel with Manual Outdoor-Air

Damper Installed

C06013

Fig. 18 ---Outdoor-Air Hood Details

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551B,C

Image 23

Bryant 551C 551B,C, Humidistat Wiring 208/230-VUnit Shown, Damper Panel with Manual Outdoor-Air, Damper Installed, Splice

Contents

Installation Instructions TABLE OF CONTENTSSAFETY CONSIDERATIONS INSTALLATIONStep 4 -Rigand Place Unit Step 3 -InstallExternal Trap for Condensate DrainStep 1 -ProvideUnit Support Step 2 -FieldFabricate Ductwork551C 551B,CFig. 2 --- Roof Curb Details 551BFig. 4 --- Condensate Drain Connection 551B,CMAXIMUM ALLOWABLE DIFFERENCE in Fig. 3 --- Unit Leveling TolerancesFig. 7 --- Roof Curb Alignment 551B,CXOB LOR TNO C 551B 036-072Base Unit Dimensions551B,C C06375COMPRESSOR Fig. 9 --- 551C 024-060Base Unit DimensionsACCESS 551B,CHeat Anticipator Settings Step 5 -MakeElectrical ConnectionsField Power Supply Field Control WiringTable 1-PhysicalData 551B 551B,CTable 2-PhysicalData 551C 551B,CIndoor Evaporator Fan Contactor Fig. 11 --- Power Wiring ConnectionsFig. 12 --- Field Control Wiring Raceway 551B,CTable 3-Electrical Data-551C 551B,CTable 3 - Electrical Data-551Ccont 551B,CVOLTAGE 551B,CTable 3 - Electrical Data-551Ccont VOLTAGE 551B,CTable 3 - Electrical Data-551Ccont NONE 551B,CTable 3 - Electrical Data-551Ccont Table 4-Electrical Data-551B 551B,CTable 4 - Electrical Data-551Bcont 551B,CUNIT 551B,CTable 4 - Electrical Data-551Bcont UNIT 551B,CTable 4 - Electrical Data-551Bcont VOLTAGE 551B,CTable 4 - Electrical Data-551Bcont Assembly Step 6 -Adjust Factory-InstalledOptionsFig. 13 --- Accessory Field-InstalledHumidistat Disconnect SwitchFactory Wiring Humidistat Wiring 208/230-VUnit ShownDamper Installed LTLO - Low Temperature LockoutFig. Fig Outdoor-AirDamper Position SettingFig. 22 --- Typical Access Panel Locations 551B,CTable 5-SupplyAir Sensor Temperature Fig. 24 --- Indoor Coil Access Panel RelocationOutdoor Air Temperature OAT Sensor Supply Air Temperature SAT SensorOutdoor Dry Bulb Changeover Fig. 27 --- EconoMi$er IV Wiring551B,C EconoMi$er IV Control ModesFig. 28 --- Barometric Flow Capacity 551B,COutdoor Enthalpy Changeover Differential Enthalphy ControlIndoor Air Quality IAQ Sensor Input Exhaust Set Point Adjustment551B,C and LED LocationsChangeover Set Points Fig. 34 --- Outside Air TemperatureFig. 35 --- Return Air Temperature or Enthalpy 551B,CFig. 37 --- EconoMi$er IV Control CO2 Sensor ConfigurationFig. 38 --- CO2 Sensor Maximum Range Setting 551B,CDehumidification of Fresh Air with DCV Control Step 7 -Adjust Evaporator-FanSpeedTable 7-CO2 Sensor Standard Settings 551B,C551B,C Fig. 41 --- Evaporator-FanPulley AdjustmentUNIT 551B,CTable 14 - Evaporator-FanMotor Efficiency GENERAL FAN PERFORMANCE NOTES551B,C Belt Drive Belt DriveBelt Drive 551B,CBelt Drive AIRFLOW 551B,CAIRFLOW 551B,CBelt Drive 551B,CAIRFLOW 551B,CAIRFLOW 551B,CBelt Drive 551B,CBelt Drive 551B,CStandard Motor Belt Drive 551B,CStandard Motor Belt Drive 551B,CHigh-StaticMotor Belt Drive 551B,CAIRFLOW 551B,CSTART-UP Internal WiringRefrigerant Service Ports PRE-START-UPVentilation Continuous Fan Safety ReliefCooling HeatingFig. 42 --- Perfect Humidityt Normal SERVICEStep 1 -Cleaning 551B,C551B,C Step 2 -LubricationFig. 45 --- Cleaning Condenser Coil Evaporator Fan Belt AdjustmentFig. 48 --- Condenser-FanAdjustment Step 3 -Condenser-FanAdjustmentStep 4 -EconoMi$erIV Adjustment Step 5 -RefrigerantChargeFig. 52 --- Cooling Charging Chart Fig. 51 --- Cooling Charging Chart Standard 551BFig. 53 --- Cooling Charging Chart, 551B 036 with Fig. 50 --- Cooling Charging ChartFig. 56 --- Cooling Charging Chart, 551B 072 with Step 6 -ReplacementPartsFig. 54 --- Cooling Charging Chart, 551B 048 with Fig. 55 --- Cooling Charging Chart, 551B 048 with551C - 2 TON CHARGING CHART Fig. 57 --- Cooling Charging Chart Standard 551C551C - 3 TON CHARGING CHART Fig. 58 --- Cooling Charging Chart Standard 551CFig. 60 --- Cooling Charging Chart Standard 551C 551C - 5 TON CHARGING CHART551C - 4 TON CHARGING CHART Fig. 59 --- Cooling Charging Chart Standard 551C551B,C TROUBLESHOOTINGUnit Troubleshooting Economi$er IV Troubleshooting551B,C EconoMi$er IV Troubleshooting CompletionTable 35-CoolingService Analysis Table 38-EconoMi$erIV Input/Output Logic 551B,CC06053 551B,CFig. 61 --- EconoMi$er IV Functional View III. START-UP GENERALSTART-UPCHECKLIST Remove and Store in Job File I. PRELIMINARY INFORMATION