Programmable Thermostat, 3H/2C Heat Pump, 2H/2C Conventional, T6 Pro

Honeywell TH6320U2008/U T Series Programmable Thermostat – Multi-Stage Control for Heat Pump and Conventional Systems

The Honeywell T Series TH6320U2008/U thermostat is engineered for compatibility with a wide range of residential HVAC applications, including up to 3 heat/2 cool heat pump systems and 2 heat/2 cool conventional systems. It provides precise temperature control with selectable programming modes and a 1°F differential to support energy efficiency and system performance.

Application Overview

Designed with contractors in mind, the T Series thermostat uses the Universal Wall Plate (UWP) system for efficient installation and service. The thermostat can operate in programmable or non-programmable modes (7-day, 5-1-1, or 5-2), allowing flexibility based on system requirements and occupant preferences. The unit supports auto or manual changeover and includes a large-format backlit display for visibility in varied lighting conditions.

Key Product Features

• Heating Range: 40°F to 90°F
• Cooling Range: 50°F to 99°F
• Control Accuracy: ±1°F differential
• Mounting: UWP backplate with included mounting hardware
• Display: 5.44 sq-in LED backlit interface
• Power Options: 20–30 VAC hardwired or battery-powered (2 AA included)
• Terminal Designations: RC, R, C, W, W2/AUX, Y, Y2, O/B, G, K, E, L/A, S1, S2
• Changeover Mode: Selectable auto or manual

Environmental and Physical Parameters

• Operating Temperature: 37°F to 102°F
• Humidity Tolerance: 5% to 90% RH, non-condensing
• Dimensions: 4-1/16" H x 4-1/16" W x 1-3/32" D

Installation Notes

For optimal performance and code compliance, installation should be performed by qualified HVAC personnel. Basic electrical tools are required. The UWP bracket simplifies retrofit or new installations and reduces time on site. Configuration settings can be adjusted directly through the interface without specialized equipment.

Included Components

• Universal Wall Plate with terminal block
• Mounting hardware and cover plate
• 2 AA backup batteries
• Installation and setup guide