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 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) |
• | TB7980B | (multiple output modulating) | • | TB6980B | (multiple output, floating) |
Depending on the models, the thermostat can have up to three out- puts 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
2. Installation
Configuration and status display
| Heating mode |
Cooling mode | Temperature display |
| |
Temperature | Output power display |
adjustment |
|
button |
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Override button |
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2.1 Mounting Instructions
1.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.
2.Pass the wires through the center hole of the base and secure the base to the wall or onto an electrical box.
3.Wire the thermostat. See section 2.2 for terminal designations and section 3 for typical wiring diagrams.
4.Reinstall the thermostat onto its base and secure with the cap- tive screw.
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 | |||
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1 | 24 VAC | Power supply | ||
2 | COM | |||
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3 | AN1 |
| TB7980 models | |
4 | COM |
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Output 1 |
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3 | OPEN | TB6980 models | ||
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4 | CLOSED |
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5 | T2/AN2 | Output 2 (TB6980B and TB7980B models) | ||
6 | T2/COM | |||
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7 | T3 | Output 3 (TB6980B and TB7980B models) | ||
8 | T3 | |||
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9 | COM | External sensor input. (For applications requiring | ||
10 | SENSOR | an external sensor, see section 4.2.) | ||
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9 | COM | Mode Changeover input (N.O. contact). See sec- | ||
11 | tion 5.5.2. | |||
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9 | COM | Night Setback activation input (N.O. contact). | ||
12 | NSB | See section 5.6. | ||
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Note: To configure the terminals, see section 4.
TB6980/TB7980
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