Honeywell RTH7500D Programmable Thermostat

Introduction

The Honeywell RTH7500D Programmable Thermostat offers electronic control for 24 Vac heating and cooling systems, as well as 750 mV heating systems. This guide provides essential information for installation and operation.

For assistance with your Honeywell product, please visit www.honeywell.com/yourhome or call Honeywell Customer Care at 1-800-468-1502.

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Key Features and Installation Overview

This document outlines the steps for installing the RTH7500D thermostat, including:

• Preparation and required tools
• Important instructions regarding wiring
• Removing the old thermostat
• Handling specific wiring configurations (e.g., C and C1 wires)
• Labeling thermostat wires
• Mounting the new wallplate
• Connecting wires
• Installing batteries
• Configuring installer setup
• Customer assistance and warranty information

Important Considerations

• Always turn off power to the heating and/or cooling system at the circuit breaker panel before beginning installation.
• Do not connect wires based on color; use the provided wire labels for accurate identification.
• If replacing a thermostat containing mercury, follow local waste management guidelines for proper disposal.