Honeywell TH8000 Series Touch-screen Programmable Thermostat Installation Guide

This Honeywell installation guide provides wiring diagrams, safety instructions, and programming setup for the VisionPRO TH8000 Series touch‑screen thermostat.


Honeywell TH8000 Series Touch-screen Programmable Thermostat Installation Guide - cover page
Brand
Honeywell
Document type
Installation Guide
Language
English
Pages
12
File format
PDF
File size
624 KB
Published
05 October, 2026
Updated
05 October, 2026
MD5 checksum
702F7D0C08B247A92813ABBF94826220

About this manual

The guide walks installers through mounting the wallplate, connecting power and sensor wires, and completing the physical installation of the VisionPRO TH8000 Series thermostat. It emphasizes safety, requiring power to be disconnected and the work to be performed by a trained technician.

After installation, the document details the thermostat’s configuration options, including system type selection, backlight settings, temperature limits, dehumidification and ventilation controls, and advanced features such as Adaptive Intelligent Recovery and droop control. Each function is described with default values and the steps needed to adjust them.

What's inside

  • Installation Guide
  • Wallplate installation
  • Wiring guide – conventional systems
  • Wiring guide – heat pump systems
  • Installer setup
  • Setup functions
  • System test
  • Specifications
  • Accessories & replacement parts

Specifications

Heat temperature range40° to 90°F (4.5° to 32°C)
Operating ambient temperature0° to 120°F (-18° to 48.9°C)
Physical dimensions4‑9/16" H × 6" W × 1‑3/8" D (116 mm H × 152 mm W × 35 mm D)
Heating terminal voltage and current20‑30 Vac, 0.02‑1.0 A
Cooling terminal voltage and current20‑30 Vac, 0.02‑1.0 A

Frequently asked questions

How can the backlight setting be changed?

Set Backlight to 0 for an 8‑second illumination after a keypress, or to 1 for continuous full‑bright backlight (requires 24VAC connection).

How do I enable Dehumidification Away Mode?

Set function 0390 (Dehumidification Away Mode) to 1 (Yes) in the installer setup.

What are the temperature limits for heat pump compressor lockout?

Function 0350 sets the lockout temperature; values range from 5 °F to 60 °F (‑15 °C to 15.5 °C).

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