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Bryant 551C installation instructions 551B,C, Evaporator-FanPulley Adjustment

Models: 551B

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Fig. 41 ---Evaporator-Fan Pulley Adjustment

551B,C

	0.35
	0.3
	0.25
WG	0.2
P IN.	0.2
P IN.
DELTA	0.15
DELTA
	0.1
	0.05
	0
	0	1000	2000	3000	4000	5000	6000

4 & 5 ton

6 ton

3 ton

C06133

Fig. 39 ---Perfect Humidityt Adaptive Dehumidification System Static Pressure Drop (in. wg)

Fig. 40 ---Belt Drive Motor Mounting						C06134			Fig. 41 ---Evaporator-Fan Pulley Adjustment						C06041
Fig. 40 ---Belt Drive Motor Mounting									Fig. 41 ---Evaporator-Fan Pulley Adjustment
	Table 8—551B, 551C Fan Rpm at Motor Pulley Setting With Standard Motor*

UNIT							MOTOR PULLEY TURNS OPEN
551B
551C	0	1/2	1		11/2		2	21/2	3	31/2	4	41/2	5	51/2	6
024	936	906	876		846		816	786	756	726	696	666	639	—	—
036	1044	1008	971		935		898	862	826	789	753	716	680	—	—
048	1185	1144	1102		1061		1019	978	936	895	853	812	770	—	—
060	1460	1425	1389		1354		1318	1283	1248	1212	1177	1141	1106	1070	1035
072	1585	1538	1492		1445		1399	1352	1305	1259	1212	1166	1119	—	—

*Approximate fan rpm shown (standard motor/drive).

Table 9—551B, 551C Fan Rpm at Motor Pulley Setting With High-Static Motor*

UNIT						MOTOR PULLEY TURNS OPEN
UNIT	0	1/	1	11/	2		21/	3	31/		4	41/	5	51/	6
		2		2			2		2			2		2
036	1455	1423	1392	1360	1328		1297	1265	1233		1202	1170	1138	1107	1075
048	1455	1423	1392	1360	1328		1297	1265	1233		1202	1170	1138	1107	1075
060	1685	1589	1557	1525	1493		1460	1428	1396		1364	1332	1300	—	—
072	1685	1589	1557	1525	1493		1460	1428	1396		1364	1332	1300	—	—

*Approximate fan rpm shown (high-static motor/drive).

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Bryant 551C installation instructions 551B,C, Evaporator-FanPulley Adjustment

Contents

TABLE OF CONTENTS SAFETY CONSIDERATIONSINSTALLATION Installation InstructionsStep 3 -InstallExternal Trap for Condensate Drain Step 1 -ProvideUnit SupportStep 2 -FieldFabricate Ductwork Step 4 -Rigand Place Unit551B,C Fig. 2 --- Roof Curb Details551B 551C551B,C MAXIMUM ALLOWABLE DIFFERENCE inFig. 3 --- Unit Leveling Tolerances Fig. 4 --- Condensate Drain Connection551B,C Fig. 7 --- Roof Curb Alignment551B 036-072Base Unit Dimensions 551B,CC06375 XOB LOR TNO CFig. 9 --- 551C 024-060Base Unit Dimensions ACCESS551B,C COMPRESSORStep 5 -MakeElectrical Connections Field Power SupplyField Control Wiring Heat Anticipator Settings551B,C Table 1-PhysicalData 551B551B,C Table 2-PhysicalData 551CFig. 11 --- Power Wiring Connections Fig. 12 --- Field Control Wiring Raceway551B,C Indoor Evaporator Fan Contactor551B,C Table 3-Electrical Data-551C551B,C Table 3 - Electrical Data-551CcontVOLTAGE 551B,CTable 3 - Electrical Data-551Ccont VOLTAGE 551B,CTable 3 - Electrical Data-551Ccont NONE 551B,CTable 3 - Electrical Data-551Ccont 551B,C Table 4-Electrical Data-551B551B,C Table 4 - Electrical Data-551BcontUNIT 551B,CTable 4 - Electrical Data-551Bcont UNIT 551B,CTable 4 - Electrical Data-551Bcont VOLTAGE 551B,CTable 4 - Electrical Data-551Bcont Step 6 -Adjust Factory-InstalledOptions Fig. 13 --- Accessory Field-InstalledHumidistatDisconnect Switch AssemblyHumidistat Wiring 208/230-VUnit Shown Damper InstalledLTLO - Low Temperature Lockout Factory WiringOutdoor-AirDamper Position Setting Fig. 22 --- Typical Access Panel Locations551B,C Fig. FigFig. 24 --- Indoor Coil Access Panel Relocation Outdoor Air Temperature OAT SensorSupply Air Temperature SAT Sensor Table 5-SupplyAir Sensor TemperatureFig. 27 --- EconoMi$er IV Wiring 551B,CEconoMi$er IV Control Modes Outdoor Dry Bulb Changeover551B,C Outdoor Enthalpy ChangeoverDifferential Enthalphy Control Fig. 28 --- Barometric Flow CapacityExhaust Set Point Adjustment 551B,Cand LED Locations Indoor Air Quality IAQ Sensor InputFig. 34 --- Outside Air Temperature Fig. 35 --- Return Air Temperature or Enthalpy551B,C Changeover Set PointsCO2 Sensor Configuration Fig. 38 --- CO2 Sensor Maximum Range Setting551B,C Fig. 37 --- EconoMi$er IV ControlStep 7 -Adjust Evaporator-FanSpeed Table 7-CO2 Sensor Standard Settings551B,C Dehumidification of Fresh Air with DCV ControlFig. 41 --- Evaporator-FanPulley Adjustment 551B,C551B,C UNITTable 14 - Evaporator-FanMotor Efficiency GENERAL FAN PERFORMANCE NOTES551B,C Belt Drive Belt DriveBelt Drive 551B,CBelt Drive 551B,C AIRFLOW551B,C AIRFLOW551B,C Belt Drive551B,C AIRFLOW551B,C AIRFLOW551B,C Belt Drive551B,C Belt Drive551B,C Standard Motor Belt Drive551B,C Standard Motor Belt Drive551B,C High-StaticMotor Belt Drive551B,C AIRFLOWInternal Wiring Refrigerant Service PortsPRE-START-UP START-UPSafety Relief CoolingHeating Ventilation Continuous FanSERVICE Step 1 -Cleaning551B,C Fig. 42 --- Perfect Humidityt NormalStep 2 -Lubrication Fig. 45 --- Cleaning Condenser CoilEvaporator Fan Belt Adjustment 551B,CStep 3 -Condenser-FanAdjustment Step 4 -EconoMi$erIV AdjustmentStep 5 -RefrigerantCharge Fig. 48 --- Condenser-FanAdjustmentFig. 51 --- Cooling Charging Chart Standard 551B Fig. 53 --- Cooling Charging Chart, 551B 036 withFig. 50 --- Cooling Charging Chart Fig. 52 --- Cooling Charging ChartStep 6 -ReplacementParts Fig. 54 --- Cooling Charging Chart, 551B 048 withFig. 55 --- Cooling Charging Chart, 551B 048 with Fig. 56 --- Cooling Charging Chart, 551B 072 withFig. 57 --- Cooling Charging Chart Standard 551C 551C - 3 TON CHARGING CHARTFig. 58 --- Cooling Charging Chart Standard 551C 551C - 2 TON CHARGING CHART551C - 5 TON CHARGING CHART 551C - 4 TON CHARGING CHARTFig. 59 --- Cooling Charging Chart Standard 551C Fig. 60 --- Cooling Charging Chart Standard 551CTROUBLESHOOTING Unit TroubleshootingEconomi$er IV Troubleshooting 551B,C551B,C EconoMi$er IV Troubleshooting CompletionTable 35-CoolingService Analysis 551B,C Table 38-EconoMi$erIV Input/Output LogicC06053 551B,CFig. 61 --- EconoMi$er IV Functional View GENERAL START-UPCHECKLIST Remove and Store in Job FileI. PRELIMINARY INFORMATION III. START-UP