Bryant 502A manual Controls, Electrical Data, OPERATING SEQUENCE Cooling, Electric Heater Data

CONTROLS

OPERATING SEQUENCE

Cooling

1.Thermostat calls for cooling.

a.Indoor (evaporator) fan relay is energized and starts evaporator fan.

b.Compressor contactor is energized to start compressor and condenser fan (up to a 5-minute delay on single- phase units).

2.When room thermostat is satisfied, the evaporator fan, com- pressor, and condenser fan shut off.

Continuous Fan Operation — The thermostat can be set for continuous operation by setting the fan switch to ON.

ELECTRICAL DATA

UNIT		V-PH	VOLTAGE RANGE		COMPRESSOR			FAN MOTORS			POWER SUPPLY
							Evaporator		Condenser		Min Ckt	MOCP
502A		(60 Hz)
			Min	Max	RLA	LRA	Hp	FLA	Hp	FLA	Amps	Amps
024		230-1	207	254	11.5	62.5	.17	1.10	.50	3.40	19.1	25
036		230-1	207	254	17.2	96.0	.50	3.20	.75	6.06	29.5	40
		208/230-3	187	254	10.2	77.0	.50	3.20	.75	3.93	19.9	25
		460-3	414	508	4.3	37.0	.50	1.50	.75	1.97	8.8	15
		230-1	207	254	23.7	129.0	.75	4.00	1.0	8.35	42.0	60
048		208/230-3	187	254	13.5	99.0	.75	4.00	1.0	3.93	24.8	35
		460-3	414	508	7.4	49.5	.75	2.15	1.0	1.97	13.4	15
		575-3	518	632	5.8	40.0	.75	1.40	1.0	1.45	10.1	15
048*		208/230-3	187	254	13.5	99.0	1.5	5.60	1.0	3.93	26.4	35
		460-3	414	508	7.4	49.5	1.5	2.80	1.0	1.97	14.0	20
		230-1	207	254	28.8	169.0	.75	4.00	1.5	9.50	49.5	70
060		208/230-3	187	254	17.3	123.0	.75	4.00	1.5	4.82	30.4	45
		460-3	414	508	9.0	62.0	.75	2.15	1.5	2.41	15.8	25
		575-3	518	632	7.1	50.0	.75	1.40	1.5	1.90	12.2	20
060*		208/230-3	187	254	17.3	123.0	1.5	5.60	1.5	4.82	32.0	40
		460-3	414	508	9.0	62.0	1.5	2.80	1.5	2.41	16.5	25
		LEGEND					*Optional evaporator-fan motor nameplate data.
HACR	— Heating, Air Conditioning, and Refrigeration
Hp	— Horsepower
FLA	— Full Load Amps
LRA	— Locked Rotor Amps
MOCP — Maximum Overcurrent Protection (HACR breaker)
RLA	— Rated Load Amps

ELECTRIC HEATER DATA

ELECTRIC HEATER	USED WITH	V-PH	CAP. (kW)		BRANCH CIRCUIT
UNIT 88EN	UNIT 502A	(60 Hz)		Heater Amps	MCA	MOCP (Amps)
0050CA01		240-1	5.0	20.8	26.0	30
0075CA01		240-1	7.5	31.3	39.1	40
0115CA01	024, 036	240-1	11.5	47.9	59.9	60
0075EA01	1-Stage Heat	208-3	5.6	15.6	19.5	20
		240-3	7.6	18.0	22.6	25
1150EA01		208-3	11.3	31.2	39.0	40
		240-3	15.0	36.1	45.1	50
0100EA01		208-3	7.5	20.8	26.0	30
		240-1*	10.0	41.7	52.1	60
		240-3	10.0	24.1	30.1	35
0150EA01		208-3	11.3	31.2	39.0	40
		240-1*	15.0	62.5	78.1	80
		240-3	15.0	36.1	45.1	50
0200EA01		208-3	15.0	41.7	52.1	60
	048, 060	240-1*	20.0	83.3	104.2	110
	2-Stage Heat	240-3	20.0	46.9	58.6	60
0300EA01		208-3	22.5	62.5	78.2	80
		240-3	30.0	72.2	90.2	100
0300CA01		240-1	30.0	124.0	155.0	175
0100FA01		480-3	10.0	12.0	15.0	15
0150FA01		480-3	15.0	18.1	22.6	25
0200FA01		480-3	20.0	24.1	30.1	35
0300FA01		480-3	30.0	36.1	45.1	50

LEGEND	*May be field converted to single-phase units, see electric heat installa-
MCA — Minimum Circuit Ampacity	tion instructions.
MOCP — Maximum Overcurrent Circuit Protection	NOTE: Separate power source is required for all heaters. Control from
(Fuses or Circuit Breaker)	base unit 502A (24 v).

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