Bryant installation instructions 551B,C, PhysicalData 551C

551B,C

Table 2—Physical Data 551C

BASE UNIT 551C		024		036		048		060
NOMINAL CAPACITY (nominal tons)		2		3		4		5
OPERATING WEIGHT (lb)
Unit		435		445		465		635
Perfect Humidity™ Adaptive Dehumidification System		13		15		23		25
EconoMi$er IV		50		50		50		50
Roof Curb		115		115		115		115
COMPRESSOR						Scroll
Quantity		1		1		1		1
Oil (oz)		25		42		56		53
REFRIGERANT TYPE						R-22
Expansion Device					Acutrol™ Metering Device
Operating Charge (lb-oz)
Standard Unit		5---3		7---11		8---8		12---11
Unit With Perfect Humidity Adaptive Dehumidification System		10---2		14---0		14---13		21---0
CONDENSER FAN						Propeller
Quantity...Diameter (in.)		1...22		1...22		1...22		1...22
Nominal Cfm		3000		3500		3500		4100
Motor Hp...Rpm		1/8...825		1/8...825		1/8...825		1/ ...1100
Watts Input (Total)								4
		180		180		180		320
CONDENSER COIL				3/8---in. OD Enhanced Copper Tubes, Aluminum Lanced Fins
Rows...Fins/in.		1...17		1...17		2...17		2...17
Total Face Area (sq ft)		14.6		14.6		16.5		16.5
EVAPORATOR COIL			3/8---in. OD Enhanced Copper Tubes, Aluminum Double-Wavy Fins
Standard Unit
Rows...Fins/in.		2...15		2...15		2...15		4...15
Total Face Area (sq ft)		4.2		5.5		5.5		5.5
Unit with Perfect Humidity Adaptive Dehumidification System
Rows...Fins/in.		1...17		1...17		2...17		2...17
Total Face Area (sq ft)		3.5		3.9		3.9		3.9
EVAPORATOR FAN					Centrifugal Type, Belt Drive
Quantity...Size (in.)		1...10 x 10		1...10 x 10		1...10 x 10		1...10 x 10
Nominal Cfm		800		1200		1600		2000
Maximum Continuous Bhp	Std	0.58		1.20		1.20		1.30/2.40*
	Hi-Static			2.40		2.40		2.90
Motor Frame Size	Std	48		48		48		48/56*
Motor Rpm	Hi-Static			56		56		56
		1620		1620		1620		1725
Fan Rpm Range	Std	400-1000		680-1044		770-1185		1035-1460
Motor Bearing Type	Hi-Static			1075-1455		1075-1455		1300-1685
		Ball		Ball		Ball		Ball
Maximum Fan Rpm	Std	1620		2100		2100		2100
Motor Pulley Pitch Diameter A/B (in.)		2.4/3.2		1.9/2.9		1.9/2.0		2.4/3.4
	Hi-Static			2.8/3.8		2.8/3.8		3.4/4.4
Nominal Motor Shaft Diameter (in.)	Std	5/8		1/2		1/2		5/8
	Hi-Static	7/8		5/8		5/8		5/8
Fan Pulley Pitch Diameter (in.)	Std	4.0		4.5		4.0		4.0
	Hi-Static	4.5		4.5		4.0		4.5
Belt — Type...Length (in.)	Std	1...A...36		1...A...36		1...A...36		1....4...40
Pulley Center Line Distance (in.)	Hi-Static			1...A...39		1...A...39		1...A...40
	Std	10.0---12.4		10.0-12.4		10.0-12.4		14.7-15.5
Speed Change per Full Turn of		60		65		70		75
Movable Pulley Flange (rpm)	Hi-Static			65		65		60
Movable Pulley Maximum Full	Std	5		5		5		6
Turns from Closed Position	Hi-Static			6		6		5
Factory Setting — Full Turns Open	Std	3		3		3		3
	Hi-Static			31/2		31/2		31/2
Factory Speed Setting (rpm)	Std	756		826		936		1248
Fan Shaft Diameter at Pulley (in.)	Hi-Static			1233		1233		1396
		5/8		5/8		5/8		5/8
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief					450 ± 50
Cutout					428
Reset (Auto.)					320
LOSS-OF-CHARGE/LOW-PRESSURE
SWITCH (Liquid LIne) (psig)
Cutout					7 ± 3
Reset (Auto.)					22 ± 5
FREEZE PROTECTION THERMOSTAT
Opens (F)					30
Closes (F)					45
OUTDOOR-AIR INLET SCREENS				Cleanable. Screen quantity and size varies with option selected.
RETURN-AIR FILTERS						Throwaway
Quantity...Size (in.)					2...16 x 25 x 2
LEGEND				***These units do NOT meet the California low NOx requirements.
Bhp — Brake Horsepower				†††California SCAQMD compliant low NOx			models have combustion products that are
				controlled to 40 nanograms per joule or less.

*Single phase/three phase.

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