Honeywell TB7980 user manual

Summary of the content on the page No. 1

TB6980/TB7980
Installation and User Guide
ZonePRO Thermostats
1. Introduction
The TB6980/TB7980 digital thermostats provide proportional plus
integral individual space temperature control in zoned commercial Configuration and status display
HVAC systems such as hydronic and pressure dependent VAV with
or without reheat. There are four different models:
• TB7980A (single output, modulating) • TB6980A (single output, floating)
Heating mode
• TB7980B (multiple output modulating) • TB6980B (multiple

Summary of the content on the page No. 2

3. Typical Applications TB6980B TB7980B FIGURE 1: Damper control with electric reheat and auxiliary FIGURE 2: Damper control with electric reheat and auxiliary baseboard heating. hot-water heating TB6980B TB7980B FIGURE 3: Damper control with automatic changeover, electric reheat and central cooling FIGURE 4: Temperature control of fresh air supply TB7980B TB7980B CAUTION CAUTION Do not connect Do not connect common to ground common to ground FIGURE 5: Changeover and NSB inputs sharing the sam

Summary of the content on the page No. 3

4. Configuration 4.1 Configuration Menus (See following pages for explanations) NOTE: Factory settings are inside the shaded cells. 1. Remove the thermostat from its base and TB7980A model set the SW2 switch to MENU. 2. Reinstall the thermostat. The thermostat is now in configuration mode. The first digit Default mode & Output 1 Maximum Minimum Application NSB value Output 1 type min. opening setpoint setpoint flashes to indicate that the first item of the (section 4.2) (section 5.6) (sect

Summary of the content on the page No. 4

The following table shows the different default modes, the different 4.2 Application Types output types for Output 1, and their corresponding settings in the The following table shows the different thermostat applications and configuration menu. their corresponding settings in the configuration menu. Menu setting TB7980 models TB6980 models Menu setting Description Cool / 0-10 V analog Cool 0 Internal To control the ambient temperature using the internal (max. of 10 min. refresh) (24 V tri-sta

Summary of the content on the page No. 5

4.5 Output 3 (models TB6980B and TB7980B) 4.7 DIP Switches The following table shows the output types for Output 3 and their Three switches at the back of the control module are used to select corresponding settings in the configuration menu. various options. Temperature Display (SW1) Menu setting Description Selects the desired temperature display (°C or °F). 0 Not used Access Mode (SW2) 1 24 VAC pulsed (triac) / 1 sec. cycle Selects the operation mode (NORM) or the configuration mode 24 VAC pu

Summary of the content on the page No. 6

Humidity limits: 0 to 95% R.H., non-condensing 5.5.1 Automatic changeover Dimensions: 2.7 x 4.6 x 1.0 in. (69 x 118 x 27 mm) In automatic changeover, the thermostat detects when the system Accessories: - R841 electromechanical relay switches between heat mode and cool mode by comparing the air - 50014157-001 air duct temperature sensor supply temperature with the ambient temperature. If the thermostat - 50014156-002 remote room temperature sensor is in heat mode, it switches to cool mode when th