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Bryant 551A 24, Accessory/FIOP Static Pressure in. wg, Perfect Humidity Operation Diagram

Models: 551A

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Table 13 — Accessory/FIOP Static Pressure (in. wg)

Table 13 — Accessory/FIOP Static Pressure (in. wg)

UNIT	HEATER		ELECTRIC HEATERS					ECONOMI$ER
UNIT	RATED	CFM	PRESSURE DROP					PRESSURE
551A	RATED	CFM	PRESSURE DROP					PRESSURE
551A	VOLTAGE			(kW)				DROP
	VOLTAGE			(kW)				DROP
		3,750	0.05 (14/19, 26/34)	0.06 (42/56)			0.07 (56/75)	0.03
		4,000	0.05 (14/19, 26/34)	0.06 (42/56)			0.07 (56/75)	0.04
	208/240-3-60	5,000	0.07 (14/19, 26/34)	0.08 (42/56)			0.10 (56/75)	0.05
	208/240-3-60	6,000	0.09 (14/19, 26/34)	0.12 (42/56)			0.15 (56/75)	0.07
		6,000	0.09 (14/19, 26/34)	0.12 (42/56)			0.15 (56/75)	0.07
		7,200	0.11 (14/19, 26/34)	0.16 (42/56)			0.20 (56/75)	0.09
155,180		7,500	0.12 (14/19, 26/34)	0.17 (42/56)			0.21 (56/75)	0.10
155,180		3,750	0.05 (15, 32)	0.06	(55)		0.07 (80)	0.03
		3,750	0.05 (15, 32)	0.06	(55)		0.07 (80)	0.03
		4,000	0.05 (15, 32)	0.06	(55)		0.07 (80)	0.04
	480-3-60	5,000	0.07 (15, 32)	0.08	(55)		0.10 (80)	0.05
	480-3-60	6,000	0.09 (15, 32)	0.12	(55)		0.15 (80)	0.07
		6,000	0.09 (15, 32)	0.12	(55)		0.15 (80)	0.07
		7,200	0.11 (15, 32)	0.15	(55)		0.20 (80)	0.09
		7,500	0.12 (15, 32)	0.17	(55)		0.21 (80)	0.10
		5,000	0.08 (26/34)	0.11 (42/56)			0.14 (56/75)	0.06
		6,000	0.09 (26/34)	0.12 (42/56)			0.15 (56/75)	0.07
	208/240-3-60	7,200	0.11 (26/34)	0.16 (42/56)			0.20 (56/75)	0.09
	208/240-3-60	9,000	0.15 (26/34)	0.19 (42/56)			0.24 (56/75)	0.11
		9,000	0.15 (26/34)	0.19 (42/56)			0.24 (56/75)	0.11
		10,000	0.17 (26/34)	0.21 (42/56)			0.26 (56/75)	0.12
240		11,250	0.20 (26/34)	0.24 (42/56)			0.29 (56/75)	0.14
240		5,000	0.08 (32)	0.11 (55)		0.14 (80)		0.06
		5,000	0.08 (32)	0.11 (55)		0.14 (80)		0.06
		6,000	0.09 (32)	0.12 (55)		0.15 (80)		0.07
	480-3-60	7,200	0.11 (32)	0.15 (55)		0.20 (80)		0.09
	480-3-60	9,000	0.15 (32)	0.19 (55)		0.24 (80)		0.11
		9,000	0.15 (32)	0.19 (55)		0.24 (80)		0.11
		10,000	0.17 (32)	0.21 (55)		0.26 (80)		0.12
		11,250	0.20 (32)	0.24 (55)		0.29 (80)		0.14

LEGEND

FIOP — Factory-Installed Option

NOTES:

1.Heaters are rated at 240 v, and 480 v.

2.The factory assembled horizontal adapter substantially improves fan performance.

3.The static pressure must be added to external static pressure. The sum and the evaporator entering-air cfm should then be used in conjunction with the Fan Performance table to determine blower rpm, bhp, and watts.

Fig. 29 — Perfect Humidity™ Operation Diagram

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Image 24

Bryant 551A operation manual 24, Accessory/FIOP Static Pressure in. wg, Perfect Humidity Operation Diagram

Contents

CONTENTS — Install Outdoor-AirHood— Install All Accessories X. Step 10 — Install Humidistat for OptionalFig. 1 — Roof Curb Details Adapter Roof Curb Fig. 3 — Rigging DetailsFig. 4 — Base Unit Dimensions, 551A155 and Fig. 5 — Base Unit Dimensions, 551A240 Table 1 — Physical Data III. STEP 3 — FIELD FABRICATE DUCTWORK IV. STEP 4 — MAKE UNIT DUCT CONNECTIONSV. STEP 5 — TRAP CONDENSATE DRAIN Fig. 6 — Air Distribution — Thru-the-BottomB. Field Control Wiring Fig. 11 — Field Power Wiring ConnectionsFig. 12 - Field Control Thermostat Wiring Fig. 10 - Condensate Drain Piping DetailsTable 2 — Electrical Data —10— Table 3 — Electric Resistance Heater DataFig. 13 — Optional Non-FusedDisconnect Wiring VII. STEP 7 — MAKE OUTDOOR-AIRINLET ADJUSTMENTSFig. 15 — EconoMi$er Damper Assembly — End View —11—Table 4 — Heat Anticipator Settings Adjustment PotentiometersVIII. STEP 8 — INSTALL OUTDOOR-AIRHOOD A.Outdoor Air Enthalpy Sensor InstallationE. CO2 Control Setup —13—Fig. 19 — Seal Strip Location Air Hood Cross-SectionalViewG. Dry Bulb Changeover Set Up Table 5 — EconoMi$er Switchover Control StrategyTable 7 — Default Potentiometer Settings Fig. 23 — Typical EconoMi$er WiringH. Ventilation Air Minimum Position Set Up IX. STEP 9 — INSTALL ALL ACCESSORIESFig. 24 — Typical EconoMi$er Sensor Wiring —15——16— Fig. 25 — Wind Baffle DetailsHumidistat Wiring Schematic 460V Unit Shown —17—Package Control Box Fig. 26 — Motormaster I and MotormasterIII. REFRIGERANT SERVICE PORTS V. INTERNAL WIRINGXI. ACCESSORY ECONOMI$ER ADJUSTMENT —18——19— D. Freeze Protection Thermostats—20— Page Table 11 — Fan Performance — 551A180 —22—Table 12 — Fan Performance — 551A240 —23—Table 13 — Accessory/FIOP Static Pressure in. wg Fig. 29 — Perfect Humidity Operation Diagram—24— Table 15 — Fan RPM at Motor Pulley Settings Table 16 — Evaporator Fan Motor Specifications—25— Table 14 — Perfect Humidity DehumidificationSERVICE I. CLEANINGIII.EVAPORATOR FAN PERFORMANCE ADJUSTMENT Fig. IV. EVAPORATOR FAN SERVICE AND REPLACEMENTand Adjustment Motor Section V. BELT TENSION ADJUSTMENT—27— Fig. 30 — Evaporator-FanPulley AlignmentVI. CONDENSER-FANADJUSTMENT Fig. 33 — Condenser-FanAdjustment 551A155,180Fig. 34 — Condenser-FanAdjustment 551A240 VII. ECONOMI$ER ADJUSTMENT A. LED IndicationVIII. POWER FAILURE C. To Use The Cooling Charging ChartFig. 35 — Cooling Charging Chart D. High- and Low-PressureSwitchesXIV. REPLACEMENT PARTS XVI. OPTIONAL HINGED ACCESS DOORS—30— E. Freeze Protection Thermostat FPT—31— —32— TROUBLESHOOTING Table 18 — Cooling Service Analysis—33— Table 19 — EconoMi$er Troubleshooting Page I. PRE-START-UP II. START-UPELECTRICAL TEMPERATURES