White Rodgers 50T35-743 User Manual

Page 6

50T35

TERMINAL

TYPE

SYSTEM COMPONENT

CONNECTION

TYPICAL SYSTEM WIRING TABLE

3/16" spade
terminals

3/16" spade terminals

9-pin

connector

& harness

or edge

connector

1/4" spade terminal

1/4" spade terminals

1/4" spade terminal

TWIN*

90+1

PSO

90+0

LIMO

PSI

LIMO

IND

HSI

EAC

HUM

COOL

HEAT

NEUTRAL (4 terminals)

PRI

TRNS

BLK

low voltage thermostat W terminal (or equivalent)

low voltage thermostat G terminal (or equivalent)

low voltage thermostat R terminal (or equivalent)

one wire twinning terminal

option jumper for GMP and GMPV Series Units

pressure switch OUTPUT

24 VAC transformer (low voltage HIGH side)

option jumper for GMP and GMPV Series Units

high limit OUTPUT

24 VAC transformer (low voltage COMMON side)

gas valve

pressure switch INPUT

high limit INPUT

inducer HOT side

ignitor HOT side

electronic air cleaner HOT side

humidifier HOT side

circulator blower COOL SPEED terminal

circulator blower HEAT SPEED terminal

input voltage (120 VAC) NEUTRAL side and
NEUTRAL line connections

flame sensor probe

†

park

24 VAC transformer line voltage HOT side

24 VAC transformer line voltage NEUTRAL side

input voltage (120 VAC) HOT side

* All 50T35-743 controls used in twinning applications must have the “TWIN” terminal.

†

Maximum recommended flame probe wire length is 36 inches.

St. Louis, Missouri

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of Emerson Electric Co.

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of Emerson Electric Co.