Honeywell Modulating Thermostats
Honeywell ZonePRO™ Digital Thermostats
The TB6980/TB7980 Zone PRO™ digital thermostats provide proportional plus integral individual space temperature control in zoned commercial HVAC systems such as Hydronic and pressure dependent VAV with or without reheat and V.V.T. systems.
Depending on the model, the thermostat can have up to three outputs that can be used for the following applications: Floating or Modulating damper/ valve actuator control Damper/valve actuator control with duct reheat and auxiliary heat (B models only) Hydronic systems (room control, TB6980 perimeter heating and cooling)
Honeywell Proportioning Thermostats
These temperature controls utilize a potentiometer circuit to provide proportioning control. Standard circuit is 135 ohm.
Honeywell Modulating Remote BulbTemperature Controls
Remote bulb thermostats modulate temperature of air of liquids in ducts, pipes, tanks and boilers.