- Hot Water – Modulating PID Controller
- Constant temperature heat for VAV systems
- Modulating control to very low air flow
- 2 year warranty
The AZON-W Acu-Zone™ hot water duct mounted heaters use a discharge air temperature sensor and PID controller to provide a constant supply air temperature at both design and very low air flows to a single Therma-Fuser™ diffuser or to larger zones of Therma-Fuser diffusers. The field adjustable supply air temperature is factory set at an optimal point for low room air stratification, approximately 90°F/32°C.
When the room temperature drops below the room mode control thermostat set point, the hot water valve is opened. The valve is then modulated by the PID controller to the discharge air temperature sensor to maintain the supply air temperature.