White Rodgers 922, 927, 921 installation instructions Description, Precautions, Contents

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37E73A-918, 921, 922 or 927 INTELLI-VENT™

Water Heater Thermostat Control Installation Instructions

For Natural Gas Only

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.

DESCRIPTION

The 37E73A-9XX INTELLI-IGNITION™ control is a combination gas valve, ignition control, and thermostat for use on Power Vented water heaters. The microcomputer in the control supervises the ignition sequence and timings for the water heater, and provides diagnostic codes in case of system malfunction. The control provides direct burner ignition using the White-Rodgers’ Silicon Nitride ignitor. The control uses the INTELLI-IGNITION™ technology to greatly extend the ignitor’s life.

Adjustable Regulator Controls: The gas regulator on this control requires no field service. The regulator is factory adjustable for the proper burner gas pressure.

!WARNING

“WHAT TO DO IF YOU SMELL GAS”

Do not try to light any appliance.

Do not touch any electrical switch; do not use any phone in your building.

Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s Instructions.

If you cannot reach your gas supplier, call the fire department.

!WARNING

Do not use this Natural Gas control on LP Gas water heater. Improper operation could occur, resulting in personal injury and/or death due to Carbon Monoxide (CO) poisoning, fire, or explosion. Check for proper gas type as listed on the rating plate affixed to the water heater.

 

CONTENTS

Description

1

Precautions

1

Specifications

2

Installation

2

Operation

7

Wiring

6

Troubleshooting

8

PRECAUTIONS

!WARNING

FIRE, SHOCK AND EXPLOSION HAZARDS

Shut off main gas to appliance for service or until installation is complete.

Disconnect electric power before servicing.

Do not exceed the specified voltage.

Replace existing control with recommended model.

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 servic- ing controls.Wiring errors can cause improper and dangerous operation.

Route and secure wiring away from flame.

Ensure proper earth grounding of appliance.

Ensure proper connection of line neutral and line hot wires.

Do not use tools to operate this control.

Do not take control apart, there are no serviceable parts inside.

Do not use control if it has been flooded.

Never stand on the control or use as a step.

www.white-rodgers.com

PART NO. 37-7110A

 

www.emersonclimate.com

0950

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Contents Contents PrecautionsDescription Installation SpecificationInstalling the NEW Control Removing the OLD ControlPressure port and regulator adjust locations Pressure Regulator AdjustmentTemperature Settings Display Approximate Temperature RegulationOperating Instructions Time to CauseVacation Shutdown Shutting OFF the ApplianceWiring Diagram Intelli-VentWiring Diagram Typical InstallationIntelli-Vent Sequence of Operation Sequence of OperationsError Indication Check, Repair, or Replace TroubleshootingTroubleshooting Page

922, 921, 37E73A-918, 927 specifications

The White Rodgers 37E73A series is a highly regarded line of thermostats known for their reliability and user-friendly interface. The specific models, including the 918, 922, 927, and 921, cater to a wide range of residential and commercial heating and cooling applications. These thermostats are designed to provide optimal temperature control while enhancing energy efficiency.

One of the main features of the White Rodgers 37E73A series is its digital display, which provides clear and intuitive access to temperature settings and programming options. The backlit display ensures readability in low-light conditions, making it convenient for users to adjust settings anytime.

The series supports both heating and cooling systems, making it versatile for various HVAC setups. Whether used in a furnace, heat pump, or air conditioning system, these thermostats can adapt to maintain the desired comfort level efficiently.

Another notable characteristic is its programmable capabilities. With the ability to set multiple temperature profiles throughout the day, users can save energy by lowering the temperature when they are away from home or sleeping. This feature not only contributes to reduced energy bills but also supports environmental sustainability by decreasing overall energy consumption.

The 37E73A series incorporates advanced technology designed for ease of installation and compatibility. The wiring system has been simplified, allowing for straightforward integration with existing HVAC systems. This ease of installation is complemented by detailed instructions that guide users through the setup process, ensuring a hassle-free experience.

Energy-saving features are also a key focus of the White Rodgers 37E73A thermostats. Many models include a built-in energy-saving mode that automatically adjusts settings during peak demand hours. This smart technology enhances the system's performance while maximizing efficiency, ultimately leading to cost savings over time.

In terms of design, the White Rodgers 37E73A thermostats boast a sleek and modern appearance that complements any home or office décor. The interfaces are designed with user comfort in mind, ensuring that adjustments can be made easily without technical expertise.

Overall, the White Rodgers 37E73A-918, 922, 927, and 921 models are exemplary choices for anyone looking to optimize temperature control in their living or working spaces. With their array of features, reliable technologies, and energy-efficient characteristics, these thermostats stand out in the HVAC market as a practical solution for climate management.