Bryant 551A, 551B manual PHYSICAL DATA - 558F180-300

PHYSICAL DATA — 558F180-300

UNIT 558F			180	210		240	300
NOMINAL CAPACITY (tons)			15	18		20	25
OPERATING WEIGHT				For Operating Weights see page 132.
COMPRESSOR/MANUFACTURER						Scroll/Copeland
Quantity...Model (Ckt 1, Ckt 2)			1...ZR94KC,	1...ZR108KC,		1...ZR125KC,	1...ZRU140KC*,
Stages of Capacity Control (%)			1...ZR72KC	1...ZR94KC		1...ZR108KC	1...ZR144KC
			60/100	55/45		55/45	50/50
Number of Refrigerant Circuits			2	2		2	2
Oil (oz) (Ckt 1, Ckt 2)			85,60	106,81		106,106	136, 106
REFRIGERANT TYPE						R-22
Expansion Device						TXV
Operating Charge (lb-oz)
Circuit 1†			19-6	19-5		19-7	26-8
Circuit 2			13-4	19-1		13-9	25-6
CONDENSER COIL				Cross-Hatched	3/ -in. Copper Tubes, Aluminum Lanced,
					8
				Aluminum Pre-Coated, or Copper Plate Fins
Rows...Fins/in.			4...15	3...15		4...15	4...15
Total Face Area (sq ft)			21.7	21.7		21.7	43.4
CONDENSER FAN						Propeller Type
Nominal Cfm			10,500	10,500		14,200	14,200
Quantity...Diameter (in.)			3...22	3...22		2...30	6...30
Motor Hp...Rpm			1/ ...1050	1/ ...1050		1...1075	1...1075
Watts Input (Total)			2	2		3400	3400
			1100	1100
EVAPORATOR COIL				Cross-Hatched 3/ -in. Copper Tubes, Aluminum Lanced or
					8
				Copper Plate Fins, Face Split
Rows...Fins/in.			4...15	3...15		4...15	4...15
Total Face Area (sq ft)			17.5	17.5		17.5	17.5
EVAPORATOR FAN						Centrifugal Type
Quantity...Size (in.)			2...12x12	2...12 x 12		2...12 x 12	2...12 x 12
Type Drive			Belt	Belt		Belt	Belt
Nominal Cfm			6000	7200		8000	10,000
Motor Hp			5	5		7.5	10
Motor Nominal Rpm			1745	1745		1745	1740
Maximum Continuous Bhp			6.13	5.90		8.70 [208/230 v]	10.20 [208/230 v]
						9.50 [460 v]	11.80 [460 v]
Motor Frame Size
			184T	184T		213T	215T
Nominal Rpm High/Low				—		—	—
Fan Rpm Range		Low-Medium Static	873-1021	910-1095		1002-1225	1066-1283
Motor Bearing Type		High Static	1025-1200	1069-1287		1193-1367	1332-1550
			Ball	Ball		Ball	Ball
Maximum Allowable Rpm			1550	1550		1550	1550
Motor Pulley Pitch Diameter		Low-Medium Static	4.9/5.9	4.9/5.9		5.4/6.6	4.9/5.9
	Min/Max (in.)	High Static	4.9/5.9	4.9/5.9		5.4/6.6	4.9/5.9
Nominal Motor Shaft Diameter (in.)			11/	11/		13/	13/
Fan Pulley Pitch Diameter (in.)		Low-Medium Static	8	8		8	8
			9.4	9.4		9.4	8.0
Nominal Fan Shaft Diameter (in.)		High Static	8.0	8.0		7.9	6.4
			17/	17/		17/	17/
Belt, Quantity...Type...Length (in.)		Low-Medium Static	16	16		16	16
			1...BX...50	1...BX...50		1...BX...53	2...BX...50
Pulley Center Line Distance (in.)		High Static	1...BX...48	1...BX...48		1...BX...50	2...BX...47
			13.3-14.8	13.3-14.8		14.6-15.4	14.6-15.4
Speed Change per Full Turn of		Low-Medium Static	37	37		37	36
	Movable Pulley Flange (rpm)	High Static	44	34		44	45
Movable Pulley Maximum Full Turns			4	5		5	5	558F180
	From Closed Position
Factory Speed			3.5	3.5		3.5	3.5
Factory Speed Setting (rpm)		Low-Medium Static	965	1002		1120	1182
Fan Shaft Diameter at Pulley (in.)		High Static	1134	1178		1328	1470
			17/	17/		17/	17/
			16	16		16	16
HIGH-PRESSURE SWITCH (psig)								-300
Cutout					426
Reset (Auto)					320
LOW-PRESSURE SWITCH (psig)
Cutout					27
Reset (Auto)					44
FREEZE PROTECTION THERMOSTAT (F)
Opens					30 ± 5
Closes					45 ± 5
OUTDOOR-AIR INLET SCREENS						Cleanable
Quantity...Size (in.)						2...20 X 25 X 1
						1...20 X 20 X 1
RETURN-AIR FILTERS						Throwaway**
Quantity...Size (in.)						4...20 x 20 x 2
						4...16 x 20 x 2
POWER EXHAUST			1/2 Hp, 208/230-460 v Motor Direct Drive, Propeller-Fan (Factory-Wired for 460 v)
	LEGEND
Bhp	— Brake Horsepower
TXV	— Thermostatic Expansion Valve

*The ZRU140KC compressor is a tandem compressor, consisting of a ZR72KC (25% total capacity) and a ZR68KC (24% total capacity).

†Circuit 1 uses the lower portion of the condenser coil and lower portion of the evaporator coils; and Circuit 2 uses the upper portion of both coils.

**The 558F300 unit requires 2-in. industrial-grade filters capable of handling face velocities up to 625 ft/min (such as American Air Filter no. 5700 or equivalent).

NOTE: The 558F180-300 units have a low-pressure switch (standard) located on the suction side.

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