VT7225 Thermostat for Modulating Heat Applications

The VT7225 series controllers are microcomputer-based, proportional and integral (PI) devices with one analog 0 to 10 Vdc output, one 8 Vdc and one 24 Vac proportioning pulsed output. The analog 0 to 10 Vdc modulating output can control the room or supply temperature by modulating directly a 0 to 10 Vdc SCR power controller.

The Vdc and Vac pulsed outputs can control the room or supply temperature by modulating directly 4-32 Vdc triggered solid state relays (SSR’s) using a time proportioning control algorithm on a 1 second time cycle.

Features

- 0 to 10 VDC modulating output
- VDC pulsed modulating output
- VAC pulsed modulating output
- Night setback digital input
- Room or supply control applications

Documentation

Product Documents

Installation Guide
User Interface Guide