White Rodgers 50A55-3797 Installation Manual download pdf (Page 3)

3

WIRING

C

R

G

W

Y

Y

W

G

R

THERMOSTAT

COMPRESSOR

CONTACTOR

ELECTRONIC

AIR CLEANER

CIRCULATOR

BLOWER

50A55-3797

24 VAC

120 VAC

24 VAC CLASS II

TRANSFORMER

HOT

(LINE)

NEUTRAL

(LINE)

TH TR

TYPICAL SYSTEM WIRING DIAGRAM

HUMIDIFIER

Low Voltage (24 VAC)

Line Voltage (120 VAC)

LEGEND

N. C. = Normally closed switch

N. O. = Normally open switch

[4-Pin Connector]

[12-Pin Connector]

IGNITOR

INDUCER

IGN

IGN-N

IND

IND-N

LINE N

XFMR N

EAC N

HUM N

CIR N

PARK

EAC

HUM

XFMR

LINE

PARK

HEAT

COOL

12-Pin Connector

HLO

PSO

HLI

PS

GND

TH

TR

FS

RO

OUT

RO

IN

MV

COM

MV

4-Pin Connector

IND

IGN

IND

N

IGN

N

GAS

VALVE

HIGH LIMIT

(N. C.)

AUX. HIGH

LIMIT (N. C.)

PRESSURE SWITCH

(N. O.)

FLAME SENSOR

PROBE

FS

HLO

Not Used

TH

TR

Not Used

GND

HLI

PS

MV COM

MV

Not Used

1 2 3 4 5 6 7 8

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