Carrier 58DFA instruction manual A92176, Idr Cfr

319593-401 REV. C

7

CONNECTION

GV

DSS

DIAGRAM

MGV

PRS

TR

TH

BRN

NO

C

PILOT

NC

ALS

FL

LS

(WHEN USED)

NOTE #7

WHT

BLK

IDM

RED

BLU

FUSED DISCONNECT

TRAN

ILK

WHT

SWITCH (WHEN REQ'D)

NOTE #5

PL2

1

BLK

BLK

WHT

WHT

BRN ORN

FU2

2

BLK

BLK BLU

RED

BLK

RED

RED

BLU

YEL

WHT

WHT

GRN

COM

PL1 1

4

7

GRN

PR2 L2

L1

JB

CFR

HFR

PR1

2

5

8

3

6

9

LO

NOTE #4

LO

PL4

HI

BLWM

4

RED

MED LO

3

MED HI

2

IDR

	HI	1	BLK	EAC-1	NOTE #10
	COM		WHT
		C
										SEC-2
				EAC-2
BRN	BRN
							NOTE #9			SEC-1
									FU1	PCB
CAP				W	Y	R	C	G
									3AMP	GROUND
									FUSE	SCREW
									NOTE #8	REQ'D
										NOTE #1

L1 L2	TO 115V AC FIELD DISCONNECTIONS	SCHEMATIC
	NOTE #5	DIAGRAM

ILK

EQUIPMENT GROUND

PL2
L1	HFR			CFR		4		LO			L2
						3		MED LO
	NOTE#10					2		MED HI
						1		HI
						C		COM		BLWM
					COM	PL4
		EAC-1		EAC-2		NOTE#4			CAP
	IDR					PL1-3					IDM
						PL1-1
									PR-1	115VAC	PR-2
	LS	FL	ALS		PL1-4		FU1			TRAN
PL1-7							3A		SEC-1	24VAC	SEC-2
						FUSE

	(WHEN USED)		NOTE#8
	NOTE #7
				HFR
R				LOGIC
PL1-9				TIME
				DELAY
	DSS		MGV	GV	PL1-8
Y			TH	TR
PRS
NO	C		PILOT
NC
PL1-6		PL1-2
	IDR
W
				IDR
CFR
G		NOTE #10

LEGEND
ALS	AUX. LIMIT SWITCH (OVER TEMP), SPST-(N.C.),
	MANUAL RESET
BLWM	BLOWER MOTOR
CAP	CAPACITOR
CFR	COOLING FAN RELAY, SPDT
DSS	DRAFT SAFEGUARD SWITCH, SPST-(N.C.), MANUAL RESET
EAC-1	ELECTRONIC AIR CLEANER CONNECTION (115VAC)
EAC-2	ELECTRONIC AIR CLEANER CONNECTION (COMMON)
FU1	FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE
FU2	FUSE, FIELD INSTALLED
FL	FUSIBLE LINK
GV	GAS VALVE, (REDUNDANT)
HFR	HEATING FAN RELAY, SPST (N.O.)
IDM	INDUCED DRAFT MOTOR
IDR	INDUCER DRAFT RELAY, DPST-(N.O.)
ILK	BLOWER DOOR INTERLOCK SWITCH, SPST-(N.O.)
JB	JUNCTION BOX
LS	LIMIT SWITCH (OVER TEMP), SPST-(N.C.), AUTO RESET
PCB	PRINTED CIRCUIT BOARD (FURNACE CONTROL)
PL1	9-CIRCUIT CONNECTOR (PCB1)
PL2	2-CIRCUIT CONNECTOR (L1, L2)
PL4	5-CIRCUIT PLUG CONNECTOR (BLWM)
PRS	PRESSURE SWITCH, SPDT
TRAN	TRANSFORMER (115VAC/24VAC)

JUNCTION

TERMINAL PCB TERMINAL

FACTORY POWER WIRING (120VAC)

FACTORY CONTROL WIRING (120VAC) FIELD POWER WIRING (120VAC)

CONDUCTOR ON PCB

FIELD WIRING SCREW TERMINAL

FIELD GROUND

EQUIPMENT GROUND

FIELD SPLICE

PLUG RECEPTACLE

C

NOTE #1

NOTES:

1.INTERNALLY CONNECTED TO EQUIPMENT GROUND THROUGH MOUNTING SCREW.

2.IF ANY OF THE ORIGINAL EQUIPMENT WIRE IS REPLACED, USE WIRE RATED FOR 105° C.

3.BLOWER MOTOR (BLWM) & INDUCER MOTOR (IDM) CONTAIN AUTO-RESET THERMAL OVERLOAD SWITCH.

4.BLOWER MOTOR FACTORY SPEED SELECTIONS (PL4) ARE FOR AVERAGE CONDITIONS. SEE INSTALLATION INSTRUCTIONS FOR DETAILS ON OPTIMUM SPEED SELECTIONS.

5.USE ONLY COPPER WIRE BETWEEN THE DISCONNECT SWITCH AND THE FURNACE JUNCTION BOX (JB).

6.SYMBOLS ARE ELECTRICAL REPRESENTATIONS ONLY.

7.AUXILIARY LIMIT SWITCH (ALS) USED ON DOWNFLOW MODELS ONLY.

8.THE TRANSFORMER 24VAC WINDING IS PROTECTED BY A 3 AMP AUTOMOTIVE BLADE TYPE FUSE ON THE CONTROL BOARD. A 24VAC SHORT TO GROUND DURING INSTALLATION, CHECKOUT, OPERATION, SERVICE OR MAINTENANCE COULD CAUSE THIS FUSE TO OPEN. DO NOT REPLACE THE 3 AMP FUSE WITH ANY OTHER SIZE FUSE.

9.BLOWER MOTOR (BLWM) ADJUSTABLE OFF-DELAY. FACTORY SET: 120 SECS.

CUT RESISTOR: 180 SECS.

10. WHEN CFR RELAY IS ENERGIZED, HFR RELAY IS ALSO ENERGIZED.

A92176

Fig. 9ÐUnit Wiring Diagram