HERSCHEL 12860 T-BT Battery Powered Wireless Thermostat Instruction Manual
Herschel XLS Heating Controls
T-BT Battery powered wireless thermostat
Installation and operating instructions
Technical Information
Power Supply:
Installation:
2 x AA Batteries (not included)
Free-standing or wall-mount
Setpoint Range:
Protection Class:
Wireless (RF):
Wireless Range:
Accuracy:
5-30°C
IPX0
433Mhz
35m
+/- 0.5°C
Programming:
Energy Saving:
Warranty:
7 day program, 4 periods per day
Open Window, Adaptive Start
2 years
Certifications:
CE, RoHS, EMC, RED, LOT20
Compliance
Hereby, Herschel Infrared Ltd declares that the radio equipment type T-MT Wireless
Thermostat is in compliance with Directive 2014/53/EU. The full text of the EU declaration of
| General | Details |
|---|---|
| Name | HERSCHEL 12860 T-BT Battery Powered Wireless Thermostat Instruction Manual |
| Make | HERSCHEL |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.13 MB |

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Herschel 12860 T-BT Manual: Questions and Answers
Herschel 12860 T-BT specifications
| Power supply | 2 x AA Batteries (not included) |
| Setpoint range | 5-30°C |
| Accuracy | +/- 0.5°C |
| IP rating | IPX0 |
| Wireless range | 35m |
| Warranty | 2 years |
Can I use the Herschel 12860 with setpoint temperatures below 5°C?
No. The setpoint range is 5-30°C. Instruction Manual, p. 1
How do I activate the Open Window function on the Herschel 12860 T-BT?
Press SET and '+' together for three seconds.
- Open Window icon will appear on the display.
- To deactivate, repeat the process. Instruction Manual, p. 7
How long does the heater stay off after open window detection triggers?
The heater powers back on after 30 minutes, or you can resume it manually by pressing the Power button. Instruction Manual, p. 7
What is the maximum calibration range for the Herschel 12860 T-BT?
5°C up or down from the default of 0, in steps of 0.5°C. Instruction Manual, p. 8
What do the symbols on the Herschel 12860 T-BT display mean?
The display shows day of week, time, current temperature, heating status, and which features are enabled.
| Symbol | Meaning |
|---|---|
| Heating on symbol | Heater is currently running |
| Adaptive Start enabled | Feature is active |
| Window Open enabled | Feature is active |
| Holiday Days remaining | Count of away days left |
How do I reset the time on the Herschel 12860?
Enter settings mode and step through day, minutes and hour using the SET button and +/- keys.
- Press SET for 5 seconds until day of week flashes
- Use + or - keys to set the correct day
- Press SET and adjust minutes with + or - keys
- Press SET and adjust hour with + or - keys using 24 hour format
- Changes save automatically as you enter them Instruction Manual, p. 4
Herschel 12860 T-BT compared with other Herschel thermostats
| Specification | Herschel 12860 T-BT | Herschel T-BT | Herschel T-MT | Herschel iQ T2 |
|---|---|---|---|---|
| Setpoint range | 5-30°C | 5-40°C | 5-40°C | 5-35°C (temperature increments 0.5 °C) |
| Accuracy | +/- 0.5°C | +/- 0.1°C | +/- 0.5°C | +/- 0.5 °C |
| IP rating | IPX0 | IPX0 | IPX0 | IP20 |
| Wireless range | 35m | 35m | 35m | 35m |
| Warranty | 2 years | 2 years | 2 years | 2 years |




















