Thermostat Manuals Emerson ST55 Emerson ST55 List of available manuals, guides and instructions for Emerson ST55 Sensi Smart thermostat. Navigation & Scheduling Guide Emerson ST55 Navigation & Scheduling Guide Language: English Pages: 7 PRO Installation Guide Emerson ST55 PRO Installation Guide Language: English Pages: 24 Manual Operation Emerson ST55 Manual Operation Language: English Pages: 10 Installation Guide Emerson ST55 Installation Guide Language: English Pages: 12