Honeywell TH3210D Installation Guide

Key Features & System Compatibility

• Electronic control for heat pump systems with auxiliary heat.
• Supports battery power, common wire, or common wire with battery backup.
• System settings include Heat, Off, Cool, and Em Heat.
• Fan settings include Auto and On.

Installation Requirements

Installation should be performed by a trained and experienced technician. Ensure proper power disconnection before beginning wiring. This guide includes essential pre-installation checklists, wallplate mounting instructions, and detailed wiring diagrams.

Important Considerations

• Mercury Notice: If replacing a mercury-containing control, follow local waste management guidelines for proper disposal.
• Electrical Hazard: Always disconnect power before installation to prevent shock or equipment damage.
• Installation Location: Install the thermostat approximately 5 feet above the floor in an area with good air circulation, avoiding drafts, direct sunlight, and unheated/uncooled areas.

Installer Setup & Testing

The guide details the installer setup process for configuring the thermostat to your specific heating and cooling system, including options for auxiliary and emergency heat cycle rates, temperature display, and compressor protection. A system test procedure is also provided to verify proper operation of heating, emergency heat, and cooling systems.

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