White Rodgers 50A66-743 installation instructions Installation Instructions, Description

Page 1

50A66-743

Integrated Furnace Control

INSTALLATION INSTRUCTIONS

Operator: Save these instructions for future use!

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

The 50A66-743 is an automatic gas interrupted ignition control that employs a microprocessor to continually monitor, analyze, and control the proper operation of the gas burner, inducer, and fan.

Signals interpreted during continual surveillance of the thermostat and flame sensing element initiate automatic ignition of the burner, sensing of the flame, and system shut-off during normal operation.

These controls incorporate system fault analysis for quick gas flow shut-off, coupled with automatic ignition retry upon sensing a fault correction.

DESCRIPTION

50A66-743 Cross Reference Information

 

Lennox

 

White-Rodgers

 

 

 

 

100925-01

23W51

69M0801

50A66-122

100925-02

23W5101

69M15

50A66-123

100925-03

30W25

69M1501

50A66-743

17W92

30W2501

 

 

17W9201

69M08

 

 

 

 

 

 

PRECAUTIONS

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

3

Mounting & Wiring

 

Operation

6

System Lockout and Diagnostic Features

7

Troubleshooting

8

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.

Labelallwiresbeforedisconnectionwhenservicing 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.

 

PART NO. 37-7473A

www.white-rodgers.com

 

www.emersonclimate.com

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Contents Precautions Installation InstructionsContents DescriptionElectrical Ratings @ 77F 25C Operating Temperature Range SpecificationsTiming Specifications Humidity RangeMounting and Wiring InstallationAny orientation is acceptable Typical System Wiring Diagram WiringSystem Component Typical System Wiring TableTerminal ConnectionHeat Mode Operation Option SwitchesCool Mode Manual FAN on ModeSystem Lockout Features System Lockout and Diagnostic FeaturesDiagnostic Features Diagnostic Table Troubleshooting

50A66-743 specifications

The White Rodgers 50A66-743 is a state-of-the-art heating and cooling thermostat designed for maximum comfort and efficiency in residential environments. This versatile device is known for its reliability and user-friendly features, making it a popular choice among homeowners and HVAC professionals alike.

One of the key features of the 50A66-743 thermostat is its programmable functionality. Users can easily set temperature schedules for different times of the day, ensuring optimal energy consumption while maintaining a comfortable home environment. With the option to program up to four different time periods per day, this thermostat allows for customizable comfort tailored to the homeowner's lifestyle.

The 50A66-743 employs advanced technology to facilitate precise temperature control. Its microprocessor-based design ensures accurate readings and smooth operation, allowing the system to maintain the set temperature with minimal fluctuation. This not only enhances comfort but also promotes energy efficiency, which can result in reduced utility bills.

Another notable characteristic of the White Rodgers 50A66-743 is its compatibility with various heating and cooling systems. It can easily integrate with single-stage and multi-stage systems, including gas, oil, and electric furnaces, as well as heat pumps. This versatility makes it an ideal choice for diverse HVAC applications.

User convenience is a top priority with this model, and it is equipped with a clear, easily readable display that provides real-time temperature readings. The backlit screen enhances visibility, making it easy for users to check the status of their heating or cooling systems, even in low-light conditions.

Additionally, the 50A66-743 features a simple interface with intuitive buttons that allow for quick adjustments to temperature settings. This straightforward design minimizes the learning curve for new users, making it accessible for families of all ages.

The thermostat also includes a filter change reminder, which helps homeowners stay on top of maintenance tasks, ensuring optimal system performance. Regular filter changes are crucial for maintaining air quality and efficiency, and this alert serves as a helpful nudge to keep homeowners proactive about their HVAC systems.

In summary, the White Rodgers 50A66-743 thermostat combines advanced technology, user-friendly features, and compatibility with various HVAC systems, making it an excellent choice for those seeking comfort and efficiency in their homes. Its programmable functionality, precise temperature control, and convenient design ensure that users can easily manage their home’s climate while saving on energy costs.