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1. Introduction
The TB6980/TB7980 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. There are four different models:
• TB7980A (single output, modulating)
• TB7980B (multiple output modulating)
Depending on the model, the thermostat can have up to three out-
puts 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, perimeter heating and cool-
ing)
Accessories
R841 family of electromechanical relays
T7770A3002 remote room sensor
50014156-002 remote room sensor
32004800-001 bare thermistor
50014157-001 duct temperature sensor
2. Installation
2.1 Mounting Instructions
Remove the thermostat from its base by unscrewing the cap-
tive screw and tilting the bottom of the thermostat up. The
screw cannot be completely removed.
Pass the wires through the center hole of the base and secure
the base to the wall or onto an electrical box.
Wire the thermostat. See section 2.2 for terminal designations
and section 3 for typical wiring diagrams.
Reinstall the thermostat onto its base and secure with the cap-
tive screw.
TB6980/TB7980
• TB6980A (single output, floating)
• TB6980B (multiple output, floating)
TB6980/TB7980
Installation and User Guide
Configuration and status display
Cooling mode
Temperature
adjustment
button
Override button
2.2 Terminal Designations
The designations of the terminals vary according to the particular
model of thermostat. Refer to the following table for the description
of each terminal.
TERMINAL
DESCRIPTION
1
24 VAC
Power supply
2
COM
3
AN1
4
COM
3
OPEN
4
CLOSED
5
T2/AN2
Output 2 (TB6980B and TB7980B models)
6
T2/COM
7
T3
Output 3 (TB6980B and TB7980B models)
8
T3
9
COM
External sensor input. (For applications requiring
10
SENSOR
an external sensor, see section 4.2.)
9
COM
Mode Changeover input (N.O. contact). See sec-
11
C-Over
tion 5.4.2.
9
COM
Night Setback activation input (N.O. contact).
12
NSB
See section 5.5.
Note: To configure the terminals, see section 4.
62-0238
ZonePRO Thermostat
Heating mode
Temperature display
Output power display
TB7980 models
TB6980 models
400-150-005-B
3/23/06
1/6
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Summary of Contents for Honeywell ZONEPRO TB6980
- Page 1 TB6980/TB7980 Installation and User Guide ZonePRO Thermostat 1. Introduction The TB6980/TB7980 digital thermostats provide proportional plus integral individual space temperature control in zoned commercial HVAC systems such as hydronic and pressure dependent VAV with Configuration and status display or without reheat. There are four different models: •...
- Page 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...
- Page 3 4. Configuration Remove the thermostat from its base and 4.1 Configuration Menus (See following pages for explanations) set the SW2 switch to MENU. NOTE: Factory settings are inside the shaded cells. Reinstall the thermostat. The thermostat is TB7980A model now in configuration mode. The first digit flashes to indicate that the first item of the menu can now be modified.
- Page 4 4.2 Application Types The following table shows the different default modes, the different 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...
- Page 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.
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Page 6: Technical Specifications
This warranty does not cover removal or reinstallation costs. This warranty override, the normal setpoint is used and OVERRIDE is shall not apply if it is shown by Honeywell that the defect or malfunction was displayed. caused by damage which occurred while the product was in the possession of a consumer.