50M56U-843

Universal Single Stage

HSI Integrated Furnace Control Kit

INSTALLATION INSTRUCTIONS

INSTALLER MUST READ

PAGE 3 CONTAINS WIRING HARNESS AND BLOWER CONNECTION INSTRUCTIONS FOR ALL APPLICATIONS AND IMPORTANT OEM REPLACEMENT INSTRUCTION FOR:

TRANE / AMERICAN STANDARD

RHEEM / RUUD

BRYANT / CARRIER / DAY & NIGHT / PAYNE

FAILURETO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.

DESCRIPTION

The 50M56U-843 kit is a Universal Single Stage HSI Integrated Furnace Control that employs a microprocessor to continually monitor, analyze, and control the proper operation of the gas burner, inducer, and fan.

The kit contains:

 

50M56-843 Ignition Control Module

21D64-2

21D64-2 Ignitor Kit

 

Set of Interconnect Harnesses

50M56-843

Installation should be done by a qualified heating and air conditioning contractor or licensed electrician.

If in doubt about whether your wiring is millivolt, line, or low voltage, have it inspected by a qualified heating and air conditioning contractor or licensed electrician.

Do not exceed the specification ratings.

All wiring must conform to local and national electrical codes and ordinances.

This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the control to malfunction.

Following installation or replacement, follow manufacturer’s recommended installation/service instructions to ensure proper operation.

!CAUTION

Do not short out terminals on gas valve or primary control. Short or incorrect wiring may damage the thermostat.

CONTENTS

 

Description

1

Precautions

1

Specifications

2

Installation

2

Mounting & Wiring

 

Operation

6

Troubleshooting

8

PRECAUTIONS

!WARNING

Failure to comply with the following warnings could result in personal injury or property damage.

FIRE HAZARD

Do not exceed the specified voltage.

Replace existing control with exact model and dash number.

Protect the control from direct contact with water

(dripping, spraying, rain, etc.).

If the control has been in direct contact with water, replace the control.

Label all wires before disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

Route and secure wiring away from flame.

SHOCK HAZARD

Disconnect electric power before servicing.

Ensure proper earth grounding of appliance.

Ensure proper connection of line neutral and line hot wires.

EXPLOSION HAZARD

Shut off main gas to appliance until installation is complete.

www.white-rodgers.com

PART NO. 37-7042C

Replaces 37-7042B

www.emersonclimate.com

1103

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White Rodgers 50M56U-843 installation instructions Installation Instructions, Description, Precautions, Contents

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.