Bryant 345MAV instruction manual ÐWiring Diagram, Ð21Ð

Ð21Ð

PCB SEE NOTE #10

SW2

G

(WHEN USED)

TO 115VAC FIELD DISCONNECT

SCHEMATIC DIAGRAM

NOTE #4

BLOWER

PRS

LGPS

NEUTRAL

(NATURAL GAS & PROPANE)

R

L1

OFF

ORN

GND

EQUIPMENT GROUND

DELAY

Y

(NOT ON ALL MODELS)

SW1

W

L2

COM

ILK

LO

BLOWER OFF DELAY

HUM

SPARE-2

SELECTION CHART

TEST/TWIN

NOTE #6

MED LO

YEL

HEAT

MED HI

90

SEC

LED

L1

BLU

SPARE-1

HI

START

OL

135 SEC

BLWR

HI/LO

NOTE #8

RED

RED

1-M

3-P

COOL

CAP-1

COM

180 SEC

PL1

3

2

1

LS

FRS

COM

GV

BLWM

WHT

EAC-1

225 SEC

WHT

6 5

4

FSE

2-C

HSIR

EAC-2

9

8 7

RED

GRN

GVR

1

1

HSI

SEC-1

SEC-2

NOTE #5

IDM

BLU

BLK

TRAN

PL2

2

PL5

2

OL

HI/LO

RED

WHT

IDR

M

AUX

RELAY

24 VAC-3A

WHT (COM)

PR1

115VAC

PR2

1

1

BRN

GRN

FU1

FUSE

3

3

BRN

BLK (HI)

TRAN

BRN

PL3

PL4

OL

CAP -2

COOL

SPARE-1

24VAC

HSIR

IDR

BLWR

BLOWER

YEL (MED HI)

2

2

SPEED

NOTE #8

START

CAP -1

SELECT

TEST/TWIN

NOTE #7

HEAT

SPARE-2

FU1

BLU (MED LO)

PL3

L2

EAC-1

AMP

BRN

SEC-1

SEC-2

FRS

LS

NOTE #12

PL2

RED

(LO)

BLWM

GVR-2

120

VAC

1

1.5

HUM

7

1

2

EAC-2

L1

PR1

2

3

PR2

COM

1

R

WHT (COM)

LGPS

(WHEN USED)

WHT

BLK

GRN

WHT

WHT

W

BLK

4

BLK

BLK

BLK

WHT

CAP -2

1

2 3 PL4

FUSED DISCONNECT

HSIR

BLWR

HI/LO

NOTE #6

PL1

PL5

BRN

BRN

JB

SWITCH (WHEN REQ'D)

IDR

GVR

PRS

NOTE #4

1

2

WHT

M

IDM

ILK

WHT

NEUTRAL

3

GRN

AUX

HSI

BLK

OL

BLK

FU2

L1

GVR-1

3-P

GV

GRN

2

CPU

2-C

GRN

1-M

GND

Y

8

NOTE #5

LEGEND		PL1	9-CIRCUIT CONNECTOR		G	5
		PL2	2-CIRCUIT PCB CONNECTOR
BLWR	BLOWER MOTOR RELAY, SPST-(N.O.)					FSE
BLWM	BLOWER MOTOR	PL3	3-CIRCUIT IDM CONNECTOR			6
CAP	CAPACITOR	PL4	3-CIRCUIT IDM EXTENSION CONNECTOR		COM
CPU	MICROPROCESSOR AND CIRCUITRY	PL5	2-CIRCUIT HSI/PCB CONNECTOR
EAC-1	ELECTRONIC AIR CLEANER CONNECTION (115 VAC 1.5 AMP MAX.)	PRS	PRESSURE SWITCH, SPST-(N.O.)	NOTES:		9
EAC-2	ELECTRONIC AIR CLEANER CONNECTION (COMMON)	SW1 & 2	BLOWER OFF DELAY
FRS	FLAME ROLLOUT SW. -MANUAL RESET, SPST-(N.C.)	TEST/TWIN	COMPONENT TEST & TWIN TERMINAL	1.	IF ANY OF THE ORIGINAL EQUIPMENT WIRE IS REPLACED USE WIRE RATED FOR 105˚C.
FSE	FLAME PROVING ELECTRODE	TRAN	TRANSFORMER-115VAC/24VAC
FU1	FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, FACTORY INSTALLED			2.	INDUCER (IDM) AND BLOWER (BLWM) MOTORS CONTAIN INTERNAL
FU2	FUSE OR CIRCUIT BREAKER CURRENT INTERRUPT DEVICE		JUNCTION		AUTO-RESET THERMAL OVERLOAD SWITCHES (OL).
	(FIELD INSTALLED & SUPPLIED)		UNMARKED TERMINAL	3.	BLOWER MOTOR SPEED SELECTIONS ARE FOR AVERAGE CONDITIONS, SEE INSTALLATION
GND	EQUIPMENT GROUND				INSTRUCTIONS FOR DETAILS ON OPTIMUM SPEED SELECTION.
			PCB TERMINAL
GV	GAS VALVE-REDUNDANT OPERATORS			4.	USE ONLY COPPER WIRE BETWEEN THE DISCONNECT SWITCH AND THE
GVR	GAS VALVE RELAY, DPST-(N.O.)		FACTORY WIRING (115VAC)		FURNACE JUNCTION BOX (JB).
HI/LO	BLOWER MOTOR SPEED CHANGE RELAY, SPDT		FACTORY WIRING (24VAC)	5.	THIS WIRE MUST BE CONNECTED TO FURNACE SHEETMETAL FOR CONTROL TO PROVE
HSI	HOT SURFACE IGNITOR (115 VAC)				FLAME.
			FIELD WIRING (115VAC)
HSIR	HOT SURFACE IGNITOR RELAY, SPST-(N.O.)			6.	FACTORY CONNECTED WHEN LGPS NOT USED.
HUM	24VAC HUMIDIFIER CONNECTION (.5 AMP. MAX.)		FIELD WIRING (24VAC)	7.	REPLACE ONLY WITH A 3 AMP FUSE.
IDM	INDUCED DRAFT MOTOR
			CONDUCTOR ON PCB	8.	YELLOW LEAD NOT ON ALL MOTORS.
IDR	INDUCED DRAFT RELAY, SPST-(N.O.)
				9.	BLOWER-ON DELAY, GAS HEATING 60 SECONDS, COOLING OR HEAT PUMP 2 SECONDS.
ILK	BLOWER ACCESS PANEL INTERLOCK SWITCH, SPST-(N.O.)		FIELD WIRING TERMINAL
				10.	BLOWER-OFF DELAY, GAS HEATING 90, 135, 180 OR 225 SECONDS, COOLING OR
JB	JUNCTION BOX		FIELD EARTH GROUND
					HEAT PUMP 90 SECONDS. (135 SECONDS ONLY ON SOME MODELS)
LED	LIGHT-EMITTING DIODE FOR STATUS CODES
			EQUIPMENT GROUND	11.	IGNITION-LOCKOUT WILL OCCUR AFTER FOUR CONSECUTIVE UNSUCCESSFUL
LGPS	LOW GAS PRESSURE SWITCH, SPST-(N.O.)
LS	LIMIT SWITCH, AUTO RESET, SPST(N.C.)		FIELD SPLICE		TRIALS-FOR-IGNITION. CONTROL WILL AUTO-RESET AFTER THREE HOURS.
				12.	SOME MODELS MAY HAVE SPADE QUICK CONNECT TERMINALS.
OL	AUTO-RESET INTERNAL MOTOR OVERLOAD TEMP. SW.		PLUG RECEPTACLE
PCB	PRINTED CIRCUIT BOARD					322854-101 REV. D (LIT)

Fig. 26ÐWiring Diagram A99106