Honeywell TB6980, TB7980 manual Installation and User Guide, Introduction, Mounting Instructions

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

50014156-002 remote room sensor

32004800-001 bare thermistor

50014157-001 duct temperature sensor

2. Installation

Configuration and status display

	Heating mode
Cooling mode	Temperature display
Temperature	Output power display
adjustment
button
Override button

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
1	24 VAC	Power supply
2	COM
3	AN1		TB7980 models
4	COM
		Output 1
3	OPEN		TB6980 models
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 5.5.2.
9	COM	Night Setback activation input (N.O. contact).
12	NSB	See section 5.6.

Note: To configure the terminals, see section 4.

TB6980/TB7980

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