This document is the TB7220U CommercialPRO Programmable Thermostat User Manual, which introduces the function, installation method, precautions of the thermostat.
The TB7220U CommercialPRO™ programmable thermostat provides electronic control for 24 Vac heating and cooling systems. The guide explains power options, system type selection, and proper placement to ensure reliable operation.
The manual includes step‑by‑step wallplate installation, wiring diagrams for conventional and heat‑pump systems, sensor wiring for temperature averaging, battery installation, specifications, and a troubleshooting table for common issues.
| Thermostat Dimensions | 3‑3/4 in. high × 6 in. wide × 1‑3/8 in. deep |
|---|---|
| Heating Temperature Setting Range | 40 °F to 90 °F (4.5 °C to 32 °C) |
| Cooling Temperature Setting Range | 50 °F to 99 °F (10 °C to 37 °C) |
It can be powered by batteries only, by a 24 Vac direct connection, or by a 24 Vac connection with battery backup.
Connect the common side of the transformer to the C screw terminal of the wallplate and leave the metal jumper wire in place between RC and R.