Honeywell TB7980 Handleiding

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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

2.1Mounting Instructions

nRemove 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.

oPass the wires through the center hole of the base and secure

the base to the wall or onto an electrical box.

pWire the thermostat. See section 2.2 for terminal designations

and section 3 for typical wiring diagrams.

qReinstall the thermostat onto its base and secure with the cap-

tive screw.

2.2Terminal 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

Product specificaties

Foutcodes Honeywell TB7980

Foutcodes uit de officiële handleiding, met betekenis en oplossing.