Emerson Low Voltage Thermostat (Model 696334321173) Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, programming, and maintenance of your Emerson Low Voltage Thermostat, Model 696334321173. Please read this manual thoroughly before beginning installation or operation to ensure proper function and safety.

2. Safety Information

WARNING: Electrical shock hazard. Disconnect power to the heating and cooling system before installing or servicing this thermostat. All wiring must comply with local electrical codes and ordinances. Improper installation can result in property damage or personal injury.

• Ensure power is off at the main service panel before installation.
• This thermostat operates on 24VAC low voltage systems. Do not connect to line voltage (120V/240V).
• Installation should be performed by a qualified technician if you are unfamiliar with electrical wiring.

3. Package Contents

Verify that all components are present before beginning installation:

• Emerson Low Voltage Thermostat
• Mounting Bracket
• Back Plate
• Instruction Manual (this document)

4. Product Overview

The Emerson Low Voltage Thermostat is a programmable device designed for controlling heating and cooling systems, including heat pumps. It features a clear LCD display and push-button controls for easy temperature adjustment and programming.

Figure 1: Front view of the Emerson Low Voltage Thermostat. The thermostat features an LCD display showing time and temperature, along with up and down arrow buttons for adjustments. The 'WHITE-RODGERS' brand name is visible on the right side of the unit.

Key Features:

• Digital Programmable Thermostat
• Retains programmed information during power loss
• Backlit LCD Display (1.8 sq. in.)
• System Switching: Heat-Cool-Off-Emergency
• Fan Switching: Auto-On
• Temporary Program Override
• Filter Indicator

5. Installation and Setup

This thermostat is designed for hardwired installation and requires a 24VAC power source. It is compatible with heat pump systems with 1 stage cool and 2 stages heat.

5.1 Mounting

• The thermostat can be mounted horizontally or vertically.
• It is designed for mounting in an electrical box.
• Use the provided mounting bracket and back plate for secure installation.

5.2 Wiring

Terminal Designations: R, C, Y, W2, G, O/B, E, L. Refer to your HVAC system's wiring diagram for correct connections. Ensure all connections are secure.

• R: 24VAC Hot
• C: 24VAC Common
• Y: Compressor (Cooling)
• W2: Second Stage Heat
• G: Fan Relay
• O/B: Reversing Valve (Heat Pump)
• E: Emergency Heat
• L: Fault Indicator (Heat Pump)

After wiring, attach the thermostat to the back plate and mounting bracket.

6. Operating Instructions

The thermostat features a user-friendly interface with a backlit LCD display and push-button controls.

6.1 System Switching

Use the system switch to select the desired operating mode:

• Heat: Activates the heating system.
• Cool: Activates the cooling system.
• Off: Turns off both heating and cooling.
• Emergency: Activates emergency heat (for heat pump systems).

6.2 Fan Switching

Use the fan switch to select the fan operation mode:

• Auto: Fan runs only when heating or cooling is active.
• On: Fan runs continuously.

6.3 Temperature Adjustment

Use the up and down arrow buttons on the thermostat to manually adjust the desired temperature setpoint. The display will show the current temperature and the setpoint.

6.4 Temporary Program Override

This thermostat supports temporary program override. Adjusting the temperature manually will temporarily override the current program setting until the next scheduled program period begins.

7. Programming

The thermostat allows for 4 temperature settings per day and 5-1-1 programs per week (weekdays, Saturday, Sunday). The keypad programming feature facilitates setting your desired schedule.

• Refer to the on-screen prompts and the lighted keypad for guidance during programming.
• The thermostat is designed to retain programmed information even in the event of a power loss.

8. Maintenance

Regular maintenance ensures optimal performance of your thermostat and HVAC system.

• Filter Indicator: The thermostat includes a filter indicator to remind you when to check or replace your HVAC system's air filter. Follow your system manufacturer's recommendations for filter replacement.
• Cleaning: Clean the thermostat's exterior with a soft, damp cloth. Do not use abrasive cleaners or solvents.
• Battery Backup: The thermostat features a battery backup system to retain programming during power outages. No user-replaceable batteries are required for primary operation, and there is no low battery indicator.

9. Troubleshooting

If you experience issues with your thermostat, review the following common problems and solutions:

• No Display/No Power: Ensure the main power to your HVAC system is on. Check wiring connections at the thermostat and furnace/air handler. Verify 24VAC power supply.
• System Not Responding (Heating/Cooling): Check the system switch setting (Heat, Cool, Off, Emergency). Ensure the temperature setpoint is above (for heat) or below (for cool) the ambient temperature. Verify fan operation.
• Inaccurate Temperature Reading: Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its sensor.
• Programming Issues: Review the programming section of this manual. Ensure time and day settings are correct.

If problems persist after attempting these solutions, contact a qualified HVAC technician.

10. Specifications

11. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your purchase or contact CAI - EMERSON customer service directly. Keep your purchase receipt as proof of purchase.