Honeywell TB6980 Manuale Utente

TB6980/TB7980

4/6

The following table shows the different thermostat applications and
their corresponding settings in the configuration menu.

Output 1 is used to control a damper. It controls heating when the
thermostat is in heat mode or cooling when the thermostat is in cool
mode.

Set the following configuration parameters:

• Default mode
• Output type (TB7980 models only)
• Minimum opening
• Opening time (TB6980 models only)

The default mode (heat/cool) is used for the following:

• The default mode is the thermostat’s mode at power-up.
• The default mode is the active mode when the N.O. changeover

contact is open (see section 5.5.2).

• When configured as a contact (see section 4.5), Output 3 controls

either heating or cooling depending on whether the default mode
is set to heat or cool respectively.

The following table shows the different default modes, the different
output types for Output 1, and their corresponding settings in the
configuration menu.

The minimum damper opening can be set between 0 and 50 %.

The damper opening time can be set between 80 and 160 seconds.

Output 2 controls heating only, regardless of the thermostat’s mode.
When the thermostat is in heat mode, Output 2 is activated as soon
as Output 1 reaches its full capacity. When the thermostat is in cool
mode, Output 2 is activated when the measured temperature drops
below the setpoint.

The following table shows the output types for Output 2 and their
corresponding settings in the configuration menu.

0

Internal
sensor

To control the ambient temperature using the internal 
(built-in) sensor 

1 Room

To control the ambient temperature using the 
50014156-002 temperature sensor (the internal sensor 
is not used)

2 Air return

To control the temperature at the air return using the 
50014157-001 temperature sensor (the internal sensor 
is not used)

3 Air supply

To control the temperature at the fresh air supply using 
the 50014157-001 temperature sensor (the internal 
sensor is not used)

4

Automatic
changeover

To control the ambient temperature using the internal 
sensor. The 50014157-001 temperature sensor is used 
for automatic changeover. See section 5.5.1.

5

Limited 
cooling

To use the outdoor air for cooling whenever possible. 
The 50014157-001 temperature sensor is used to 
measure the outdoor air temperature. The internal 
temperature sensor measures the room temperature 
which is then compared with the setpoint. If the room 
temperature is lower than the setpoint, the air intake 
damper remains closed. If the room temperature is 
higher than the setpoint, the latter is then compared with 
the outdoor temperature. If the fresh air temperature is 
lower than the setpoint by more than 5°F(3°C), the 
damper opens to allow cool air in.

0

Cool / 0-10 V analog 
(max. of 10 min. refresh)

Cool 
(24 V tri-state floating)

1

Heat / 0-10 V analog 
(max. of 10 min. refresh)

Heat 
(24 V tri-state floating)

2

Cool / 2-10 V analog 
(max. of 10 min. refresh)

3

Heat / 2-10 V analog 
(max. of 10 min. refresh)

0

Not used

1

24 VAC pulsed (triac) / 1 sec. cycle 

2

24 VAC pulsed (triac) / 10 min. cycle / direct action 
(e.g., N.C. thermal valve)

3

24 VAC pulsed (triac) / 10 min. cycle / reverse action 
(e.g., N.O. thermal valve)

4

24 VAC pulsed (triac) / 15 min. cycle (e.g., mechanical 
relay such as R841)

5

0-10 V pulsed / 1 sec. cycle

6

0-10 V analog / 1 sec. refresh 
(e.g., SCR controlled device such as a re-heater)

7

0-10 V analog / max. of 10 min. refresh (e.g., valve)

8

2-10 V analog / max. of 10 min. refresh (e.g., damper)