Bryant 333BAV instruction manual → ÐUnit Wiring Diagram, Propane

CONNECTION DIAGRAM

Connect VIO wire to pin						O	Y1
A, B, C, or D as
designated on furnace
rating plate as "PIN".						N	BL
						R
		VIO				O	U
		A	B		C	D
14										1
PL7	RED RED	BLU GRN	BLK	BLK	BLK	WHT	BLK	BLU	YEL	YEL

LS	FRS2	NOTE 9
	RED	LPS

RED		RED		ORN		YEL	LGPS
		FRS1			DSS
	(WHEN USED)
				ORN		NOTE 9	(WHEN USED)				HSI
HEAT					ALS2			FSE
SET-UP	SWITCH		RED
SWITCH
	1	2
NORM *				ORN	(WHEN USED)			WHT	GRY	PL6
HI HT					NOTE 7
LO HT	ON OFF	ON OFF								1	2
					ALS1	YEL				BLK	WHT
BLOWER-
				ORN
OFF DELAY SWITCH
(SEC.)	3	4
90 SEC	*							WHT
135 SEC							YEL
180 SEC
225 SEC	ON OFF	ON OFF							BLK
						PL4	6			PL2
						RED			1		7
									2		8
						BRN
									3		9
						BLK
									PR1	PR2

GRY		HPS	BRN	HI
				P
BRN				GV
			BLU	M	C
					GRN
IDM		GRN
	GRN			FUSED DISCONNECT
				SWITCH	(WHEN REQ'D)
		ILK	JB
					NOTE #1
				BLK
			L1
RED	WHT	WHT	L2	WHT	FU2
BLK	BLK		GRN	GRN
1 2	3 PL3

RED

BLK

WHT

BLK

EQUIPMENT

NOTE 1

TO 115VAC FIELD DISCONNECT SWITCH

GROUND

ILK

BHI / LOR

LO-GAS-HEAT

SEE BLWM-CTL

PL5

PL5

BHT / CLR

HI-GAS-HEAT

17

L1

5

NOTE

IND

PROPANE)

BLWR

SPARE

4

3 BLWM-PWR

HI-COOL

NOTE 15

2

COMMON

1

PL8

HSIR

EAC-1 EAC-2

PL2

3

1

&

PL6

HSI

2

GAS

IHI / LOR

9

LO

(NATURAL

IDR

4

PL3

2

HI

1

7

3

COM

PR1

115VAC

PR2

8

FU1

SEC1

TRAN

SEC2

1

DIAGRAM

N/A

NOTE 6

24VAC

HPSR

5

6

N/A

2

12

N/A

FRS2 (WHEN

L2

IDM

			BLU		RED	GRN
				AC
		HI	400
YEL		M-HI			MID	HI
				HP
	ORN	M-LO	350	EFFY	M-HI	MED
				HP
		LO	315	CMFT	HI	LO

* FACTORY				BLU			BRN		GRY		L2
				YEL							L1
	SETTINGS			ORN			1
									NOTE 17 COMMON
2 3 4		BLOWER-OFF DELAY			RED			GRN
		BLOWER-OFF DELAY					BLU		HI-COOL
										HI-GAS
		LOW-HEAT ONLY			RED
1		HIGH-HEAT ONLY									HEAT
											EAC-2
	OFF
ON		WHT							PL1		LO-GAS
GRN		WHT		TWIN		1			10		HEAT EAC-1
											SPARE SPARE
				TEST	TJ				11
						2
					M				12		SEC1
						3
W2	Com W/W1 Y/Y2 R G		HUM	LED							FU1
	24V				S						SEC2
				2-STAGE							BLU

NOTE 15

PL5 PL5 BLK
IND
WHT		N
G	R		YEL

PL8

9

PL9

1

RED

5

4

3

2

1

WHT

BLWM

WHT	BLK
TRAN
RED	BLU

16

8

SCHEMATIC						2		USED)
	HUM	MGVR-2					FRS1
								LS
						3
	R					9	ALS1
	TWIN							ALS2
						6
	TEST		PL4	24	5
	TWINNING SLAVE						(WHEN USED)
				VAC	PL1
	JUMPER	BHI / LOR			4		NOTE 9	DSS
	TJ			W2
	W/W1 MASTER	BHT / CLR			1			LPS
	NOTE			Y
	16			Y2		5	(WHEN USED)
		BLWR			2		LGPS
				G
							NOTE 9

Ð7Ð

COOL	COOL		AC	GAS	CONTINUOUS - FAN
SIZE	CFM		HP	HEAT	CFM
	PER			TEMP
	TON			RISE
YEL	BLU	ORN		RED	GRN
AFS			NOTE 4

DEHUM	FURNACE
	CONTROL

N	N	O	ED	EL	U	L
R	R	I
						K
O	G	V	R	Y	L	B
		K			B
K	T		N	EL	N
	H	B			R
L		L
	W		R	Y	G
B			B

SW1		6
		4		HPS
W2	MGVR-1	1	M	P	HI
Y/Y2	CPU	10	C	GV
G			NOTE 8

			LEGEND
AFS	AIRFLOW SELECTOR
ALS1	AUXILIARY LIMIT SWITCH, OVERTEMP. MANUAL RESET, SPST (N.C.)
ALS2	AUXILIARY LIMIT SWITCH, OVERTEMP. AUTO RESET, SPST (N.C.)
BHI / LOR	BLOWER MOTOR SPEED CHANGE RELAY, SPDT
BHT / CLR	BLOWER MOTOR SPEED CHANGE RELAY, SPDT
BLWM	BLOWER MOTOR, ICM2+	-CTL = CONTROL	-PWR = POWER
BLWR	BLOWER MOTOR RELAY, SPST (N.O.)
CPU	MICROPROCESSOR AND CIRCUITRY
DSS	DRAFT SAFEGUARD SWITCH (N.C.)
EAC-1	ELECTRONIC AIR CLEANER CONNECTION (115 VAC, 1 AMP MAX.)
EAC-2	ELECTRONIC AIR CLEANER CONNECTION (COMMON)
FRS1	FLAME ROLLOUT SWITCH OVERTEMP. MANUAL RESET, SPST (N.C.)
FRS2	FLAME ROLLOUT SWITCH OVERTEMP. MANUAL RESET, SPST (N.C.)
FSE	FLAME-PROVING SENSOR ELECTRODE
FU1	FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, FACTORY INSTALLED
FU2	FUSE, FIELD INSTALLED
GV	GAS VALVE, REDUNDANT LOW-HEAT OPERATORS, 2-STAGE
HPS	HIGH-HEAT PRESSURE SWITCH, SPST (N.O.)
HPSR	HIGH-HEAT PRESSURE SWITCH RELAY, SPST (N.C.)
HSI	HOT-SURFACE IGNITER (115 VAC)
HSIR	HOT-SURFACE IGNITOR RELAY, SPST (N.O.)
HUM	24VAC HUMIDIFIER CONNECTION (0.5 AMP. MAX.)
IDM	INDUCED DRAFT MOTOR, 2-SPEED, SHADED-POLE
IDR	INDUCER MOTOR RELAY, SPST (N.O.)
IHI / LOR	INDUCER MOTOR SPEED CHANGE RELAY, SPDT
ILK	BLOWER DOOR INTERLOCK SWITCH, SPST (N.O.)
IND	INDUCTOR (NOTE 16)
JB	JUNCTION BOX
LED	LIGHT-EMITTING DIODE FOR STATUS CODES
LGPS	LOW GAS-PRESSURE SWITCH, SPST (N.O.)
LPS	LOW-HEAT PRESSURE SWITCH, SPST (N.O.)
LS	LIMIT SWITCH, OVERTEMPERATURE-AUTO RESET, SPST (N.C.)
MGVR	MAIN GAS VALVE RELAY DPST (N.O.)
	-1 = VALVE	-2 = HUMIDIFIER
N / A	NOT APPLICABLE
PL1	12-CIRCUIT CONNECTOR
PL2	9-CIRCUIT CONNECTOR

PL3	3-CIRCUIT IDM CONNECTOR
PL4	6-CIRCUIT CONNECTOR
PL5	1-CIRCUIT CONNECTOR (NOTE 16)
PL6	2-CIRCUIT HSI CONNECTOR
PL7	14-CIRCUIT CONNECTOR
PL8	5-CIRCUIT CONNECTOR
PL9	16-CIRCUIT CONNECTOR
SW1	HIGH-HEAT-ONLY SWITCH, SPST (MANUAL)*
SW2	LOW-HAT-ONLY SWITCH, SPST (MANUAL)*
SW3 & 4	BLOWER-OFF DELAY SETTING SWITCHES,
	SPST (MANUAL)*
TJ	TWINNING JUMPER,
	SPDT(MANUAL CHANGE-OVER). (NOTE 17)
TRAN	TRANSFORMER-115VAC/24VAC
TWIN/TEST	1-CIRCUIT TWINNING BUSS CONNECTOR,
	ALSO STATUS CODE RECALL. (NOTE 17)
	JUNCTION
	TERMINAL
	CONTROL TERMINAL
	FACTORY POWER WIRING (115VAC)
	FACTORY CONTROL WIRING (24VAC)
	FIELD POWER WIRING (115VAC)
	FIELD CONTROL WIRING (24VAC)
	CONDUCTOR ON CONTROL
	FIELD WIRING SCREW TERMINAL
	FIELD GROUND
	EQUIPMENT GROUND
	FIELD SPLICE
	PLUG RECEPTACLE
	AIRFLOW SELECTOR JUMPER PINS
	AIRFLOW SELECTOR FACTORY SETTING

NOTES:

1.Use only copper wire between the disconnect switch and the furnace.

2.If any of the original wire, must be replaced, use the same or equivalent type.

3.Inducer (IDM) motor contains internal auto-reset thermal overload switch.

4.Blower motor airflow selections are for nominal conditions. See Installation Instructions for details on optimum airflow selections.

5.Blower motor (BLWM) is locked-rotor overload protected by redundant electronic control circuits. Restart is attempted every 15 seconds for 2 minutes, after which it locks OFF. Reset by turning OFF all control and/or power inputs.

6.Replace only with a 3-AMP fuse.

7.Auxiliary limit switches (ALS1 & 2) used on some horizontal and some downflow models.

8.This wire must be connected to furnace sheet metal for control to prove flame.

9.Factory connected when LGPS not used.

10.Symbols are an electrical representation only.

11.BLOWER-ON DELAY: Gas heating 45 seconds, Cooling/Heat Pump 2 sec.

12.Cooling/Heat Pump BLOWER-OFF DELAY is 90 seconds.

13.IGNITION-LOCKOUT will occur after four consecutive unsuccessful trials-for-ignition. Control will automatically reset after three hours.

14.Control must be grounded at pin 10 of 12-pin connector.

15.Inductor is used on 060 or -20 cooling airflow size furnaces only. PL5 connectors are joined without IND on other furnace sizes.

16.Twinning is not permitted with ICM2+ blower motors. Keep twinning jumper in MASTER position.

17.Terminals (HI-COOL, HI-GAS-HEAT, and LO-GAS-HEAT) are not used for ICM2+ BLWM. Do not remove electrical insulators.

COMPONENT TEST

To initiate the component test sequence with no thermostat inputs and with all inducer Post-Purge and Blower-Off Delay periods completed, short the "TWIN/TEST" terminal to the "COM" terminal for about two seconds. The control will turn ON the inducer motor Low-Speed, inducer motor High-Speed, HSI, blower motor Continuous-Fan Speed, blower motor High-Gas-Heat Speed, and blower motor High-Cool Speed for 7-15 seconds each. Neither the gas valve nor the humidifier will be turned ON.

BLWM-CTL PL9

BK/PWM		10
OUT +		16
OUT -		8
EM/W2		13
R		12
C1		1
C2		3
W/W1		2
ADJ		7
G		15
HEAT		11
Y/Y2		14
O		9
COOL		5
DELAY		4
Y1		6
	Y1
	O

DEHUM								8	N/A
								7	FSE
COM		SW4	SW3 SW2		C1	3		11 N/A
	2				10	12	13
14									PL7
9
8
6
5
11
1
						A	B	C	D
	HI		AC
	M-HI	400		MID		HI
			HP
	M-LO	350	EFFY	M-HI	MED
	LO		HP
		315	CMFT	HI		LO
3	COOL	COOL	AC	GAS	CONTINUOUS - FAN
	SIZE	CFM	HP	HEAT	CFM
		PER		TEMP
4		TON		RISE
							NOTE 4		AFS
7

322293-101 REV. C

A97587

→Fig. 9ÐUnit Wiring Diagram