Honeywell TL8130A Leaflet

TL8130A

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Honeywell’s TL8130A programmable thermostat can be connected to an
electric heater to control the room temperature.

Set the switch to Standby to cut power to the heater. This will not affect the time
and temperature settings.

The thermostat displays the heater duty cycle required to maintain the desired tem-
perature. For example,   appears when the heater is activated 40 percent of the
time.

•

To remove the control module from the power
base, loosen the captive screw underneath the
thermostat and pull the two components apart as
shown.

•

To install the control module onto the power
base, reverse the above procedure.

Some thermostat configurations can be
modified via the switches on the back of the
control module.

Default (factory) settings are inside the gray cells.

Upon power-up, the thermostat is in manual mode (

) and displays  the

actual temperature.

n

Press the Hour and Min buttons to set the time.

o

Press the Day button to set the day.

: The measured temperature is below 0°C (32°F).

Heating is activated.

: The measured temperature is above 50°C (122°F).

When the backlight button is pressed, the display illuminates for 5 seconds.
When either of the 

 buttons is pressed, the display illuminates for 10 sec-

onds.

The thermostat normally displays the actual temperature. To view the set-
point, press one of the 

 buttons once or press the backlight button. The

setpoint will appear for the next 5 seconds.
To change the setpoint, press one of the 

 buttons until the desired temper-

ature is displayed.  To scroll faster, hold the button.

The thermostat has 3 temperature preset buttons:

Comfort preset button 

Economy preset button 

Vacation preset button 

To use a preset temperature, press the appropriate button. The corresponding
icon 

,   or 

 will be displayed.

The following table shows the intended use and the default setting of each of
the preset buttons.

To store a preset temperature:

n

Set the desired temperature using the 

 buttons.

o

Press and hold the appropriate preset button until the corresponding 
icon is displayed.

p

Press Mode/Ret to exit.

n

1.

Display

% of duty cycle

1 to 24% 25 to 49% 50 to 74% 75 to 99%

100%

o

2.

p

3.

SW1

Temperature format

a

a.

If you change the temperature display format, the preset buttons (

,   and 

) 

will return to their default settings.

°F

°C

SW2

Early Start

b

b.

Early Start can be used in Automatic mode only. When this function is enabled, the 
thermostat calculates the optimal time to start heating in order to obtain the desired 
temperature by the set time. The thermostat re-assesses the start time daily based 
on the previous day’s performance.

Disable

Enable

SW3

Time format

12-hour

24-hour

On/Standby 
switch *

Day and time 
settings

Temperature 
adjustment 
buttons

Program button

Mode selection /
program exit

Temperature display

Mode display

Period display

Temperature 
preset buttons

Time and day display

Heating power **

Backlight button

Program 
clear button

Preset temperature 
icon

Appears when 
the setpoint is 
displayed

q

4.

r

5.

s

6.

t

7.

Comfort 
(when at home)

21°C (70°F)

Economy 
(when asleep or away from home)

16.5°C (62°F)

Vacation 
(during prolonged absence) 

10°C (50°F)