White Rodgers 50M56U-843 installation instructions System Component

Page 5

 

 

 

 

 

WIRING DIAGRAM

 

 

 

TYPICAL SYSTEM WIRING TABLE

50M56

TERMINAL

SYSTEM COMPONENT

TERMINAL

 

TYPE

 

CONNECTION

W

 

 

 

 

low voltage thermostat W terminal (or equivalent)

G

 

Terminal

 

low voltage thermostat G terminal (or equivalent)

R

 

 

low voltage thermostat R terminal (or equivalent)

 

block with

 

Y

 

 

low voltage thermostat Y terminal (or equivalent)

 

captive

 

 

 

 

(2nd wire from Y terminal goes to 24 VAC HOT side of

 

 

screws

 

 

 

 

compressor contactor coil)

 

 

 

 

 

C

 

 

 

 

24 VAC COMMON side of compressor contactor coil

HLO (Pin 1)

 

 

 

 

high limit OUTPUT

MV LO (Pin 2)

 

 

 

 

gas valve first stage

TH (Pin 3)

 

 

 

 

24 VAC transformer (low voltage HIGH side)

PSO (Pin 4)

 

 

 

 

pressure switch OUTPUT

RO OUT (Pin 5)

 

 

 

 

rollout switch OUTPUT

TR (Pin 6)

HLO

PSO

HLI

PSI

24 VAC transformer (low voltage COMMON side)

 

 

 

 

HLI (Pin 7)

MV

RO

GND

RO

high limit INPUT

LO

OUT

IN

GND (Pin 8)

TH

TR

MV

MV

MUST BE RELIABLY GROUNDED TO CHASSIS

MV COM (Pin 9)

COM

HI

gas valve COMMON

 

 

 

 

 

 

PSI (Pin 10)

 

 

 

 

pressure switch INPUT

RO IN (Pin 11)

 

 

 

 

rollout switch INPUT

MV HI (Pin 12)

 

 

 

 

gas valve second stage

IND (Pin 1)

 

 

 

 

inducer HOT side

IGN (Pin 2)

IND

IGN

IND

IGN

ignitor HOT side

 

 

IND-N (Pin 3)

N

N

inducer NEUTRAL side

 

 

 

 

 

 

IGN-N (Pin 4)

 

 

 

 

ignitor NEUTRAL side

COOL

spade terminal

circulator blower COOL SPEED terminal

LO HEAT

spade terminal

circulator blower LO HEAT SPEED terminal

HI HEAT

spade terminal

circulator blower HI HEAT SPEED terminal

PARK (2 terminals)

spade terminal

unused terminals

LINE

spade terminal

input voltage (120 VAC) HOT side

XFMR

spade terminal

24 VAC transformer line voltage HOT side

EAC (optional)

spade terminal

electronic air cleaner HOT side

HUM (optional)

spade terminal

humidifier HOT side

CIR N

spade terminal

circulator blower NEUTRAL terminal

LINE N

spade terminal

input voltage (120 VAC) NEUTRAL side

XFMR N

spade terminal

24 VAC transformer line voltage NEUTRAL side

EAC N (optional)

spade terminal

electronic air cleaner NEUTRAL side

HUM N (optional)

spade terminal

humidifier NEUTRAL side

FS

spade terminal

flame sensor probe

Maximum recommended flame probe wire length is 36 inches.

5

Image 5
Contents Precautions Installation InstructionsContents DescriptionInstallation SpecificationsMounting and Wiring Electrical Ratings @ 77F 25C Timing SpecificationsTrane and American Standard Important OEM Replacement InstructionsRheem / Ruud 1994 and earlier models Bryant / Carrier / DAY & Night / PayneTypical System Wiring Diagram Wiring DiagramSystem Component Operation Fault Code Reset Diagnostic FeaturesFault Recall Red LED Flash Error/Condition Comments/Troubleshooting

50M56U-843 specifications

The White Rodgers 50M56U-843 is a versatile and reliable universal thermostat known for its innovative features and user-friendly design. This device is particularly popular among homeowners looking to optimize their HVAC systems for improved comfort and energy efficiency.

One of the standout features of the 50M56U-843 is its compatibility with a wide range of heating and cooling systems. This includes conventional and heat pump systems, making it an excellent choice for various types of home environments. The thermostat supports both single-stage and multi-stage systems, allowing for comprehensive climate control tailored to specific needs.

The 50M56U-843 boasts an easy-to-read backlit display that provides clear visibility in low-light conditions. This user-friendly interface makes programming and setting adjustments straightforward, ensuring that users can quickly and easily modify settings for maximum comfort. The thermostat's simple navigation menu allows users to adjust temperatures, set schedules, and switch between heating and cooling modes with ease.

Efficiency is a key focus for the White Rodgers 50M56U-843, as it offers advanced energy-saving features. Users can take advantage of programmable settings that allow the thermostat to adjust temperatures based on daily routines, thus reducing energy consumption during times when the home is unoccupied. This feature not only saves on utility bills but also promotes environmentally friendly practices.

In terms of technological advancements, the 50M56U-843 incorporates features such as auto changeover, which allows the thermostat to automatically switch between heating and cooling modes as needed. This ensures optimal comfort without the need for constant manual adjustments. The unit also supports a wide temperature range, accommodating various climate conditions.

Another notable characteristic is its easy installation process. The 50M56U-843 is designed with user-friendliness in mind, providing clear instructions for mounting and wiring. This makes it feasible for homeowners to install the thermostat themselves without requiring professional assistance.

In summary, the White Rodgers 50M56U-843 is a dependable and efficient thermostat that combines functionality with user convenience. Its versatility, energy-saving features, and easy installation make it an ideal choice for those looking to enhance their home’s heating and cooling efficiency, while ensuring a comfortable living environment year-round.