Thermostat Manuals Venstar T7850 Venstar T7850 List of available manuals, guides and instructions for Venstar T7850 ColorTouch high resolution digital thermostat. Owner's Manual & Installation Guide Venstar T7850 Owner's Manual & Installation Guide Language: English Pages: 93 Quick Start & Setup Guide Venstar T7850 Quick Start & Setup Guide Language: English Pages: 24