Bryant 556A, 552A, 550A instruction manual Typical 24-vCircuit Connections Continued, Legend

BRYANT

NON-PROGRAMMABLE

THERMOSTAT

MODEL AC

24 VAC HOT	R
24 VAC COM	C
HEAT STAGE 1	W/W1
COOL STAGE 1	Y/Y2
INDOOR FAN	G

OTHER

NON-PROGRAMMABLE

AC THERMOSTAT

24 VAC HOT	R
HEAT STAGE 1	W
COOL STAGE 1	Y
INDOOR FAN	G

FK4C	AIR
FAN COIL	CONDITIONER
DH	J1 JUMPER
R
C
W1	J2 JUMPER
	C	SEE
		NOTE 2
W2
Y/Y2
G
O
Y1
		A97363
FK4C	AIR
FAN COIL	CONDITIONER

DH	J1 JUMPER
R
C	J2
W1	JUMPER
	C	SEE
		NOTE 2
W2
Y/Y2
G
O
Y1

BRYANT

PROGRAMMABLE

THERMOSTAT

MODEL AC

24 VAC HOT	R
INDOOR FAN	G
HEAT STAGE 1	W/W1
COOL STAGE 1	Y/Y2
NOT USED	O/W2
NOT USED	Y1/W2
24 VAC COM	C
NOT USED	B
NOT USED	L
OPTIONAL	S1
OUTDOOR
SENSOR
CONNECTION	S2

	FK4C	AIR
FAN COIL		CONDITIONER
	DH
	R	J1 JUMPER
	G
		J2 JUMPER
	W1

W2

Y/Y2

C

C

Y1 O

SEE

NOTE 2

A97364

A97365

LEGEND

24-V FACTORY WIRING

24-V FIELD WIRING

FIELD SPLICE CONNECTION

CCONTACTOR

Fig. 10—Typical 24-v Circuit Connections (Continued)

NOTES:

A97368

1.BRYANT THERMOSTAT WIRING DIAGRAMS ARE ONLY ACCURATE FOR MODEL NUMBERS TSTAT _ _ _ _ _ _ _.

2.WIRING MUST CONFORM TO NEC OR LOCAL CODES.

3.SOME UNITS ARE EQUIPPED WITH PRESSURE SWITCH(ES), TEMPERATURE SWITCH, OR 5-MINUTE COMPRESSOR CYCLE PROTECTION. CONNECT 24-V FIELD WIRING TO FACTORY-PROVIDED STRIPPED LEADS.

4.A LIQUID-LINE SOLENOID VALVE IS REQUIRED ON SOME UNITS. SEE SPECIFIC UNIT INSTRUCTIONS.

5.THERMOSTATS ARE FACTORY CONFIGURED WITH 5-MINUTE COMPRESSOR CYCLE PROTECTION AND 4 CYCLES PER HOUR LIMIT. SEE THERMOSTAT INSTALLATION INSTRUCTIONS FOR DETAILS.

6.TO STAGE ELECTRIC RESISTANCE HEAT, CONSULT OUTDOOR THERMOSTAT INSTALLATION INSTRUCTIONS.

© 2001 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —12— Printed in U.S.A. ii550a181 Catalog No. 5355-013