Honeywell ZONEPRO TB6980 User's Manual

Honeywell Thermostats User's Manual - ZONEPRO TB6980.
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TB6980/TB7980                                                                                                                                                                              62-0238     400-150-005-B            3/23/06             1/6

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:

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
n 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.

o Pass the wires through the center hole of the base and secure 

the base to the wall or onto an electrical box.

p Wire the thermostat. See section 2.2 for terminal designations 

and section 3 for typical wiring diagrams.

q 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.

• TB7980A (single output, modulating)

• TB6980A (single output, floating)

• TB7980B (multiple output modulating)

• TB6980B (multiple output, floating)

Configuration and status display

Heating mode

Temperature display

Output power display

Temperature 
adjustment 
button

Cooling mode

Override button

TERMINAL

DESCRIPTION

1
2

24 VAC
COM

Power supply

3
4

AN1
COM

Output 1

TB7980 models

3
4

OPEN
CLOSED

TB6980 models

5
6

T2/AN2
T2/COM

Output 2 (TB6980B and TB7980B models)

7
8

T3
T3

Output 3 (TB6980B and TB7980B models)

9

10

COM
SENSOR

External sensor input. (For applications requiring 
an external sensor, see section 4.2.)

9

11

COM
C-Over

Mode Changeover input (N.O. contact). See sec-
tion 5.4.2.

9

12

COM
NSB

Night Setback activation input (N.O. contact). 
See section 5.5.

Note: To configure the terminals, see section 4.

TB6980/TB7980

Installation and User Guide

ZonePRO Thermostat

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