Honeywell T6 Pro Hydronic - Alerts and Warnings; Low Battery Warning Indicator; Managing Thermostat Alerts

9
Advanced setup options (ISU)
# ISU ISU Name ISU Options (factory defaults
in bold)
Notes
575 Minimum Floor
Temperature Limit
40 °F to 89 °F* (72 °F);
4.5 °C to 31.5 °C* (22.2 °C)
*If the floor temperature is below that limit, the
heating will be activated regardless of the ambient Air
temperature. This ISU is only displayed if Temperature
Control Mode (ISU 299) is set to AF mode. The
minimum floor temp limit setting cannot be set higher
than 10 degrees below the maximum floor temp limit
setting.
576 Maximum Floor
Temperature Limit
50 °F* to 99 °F (85 °F);
10 °C* to 38 °C (29.5 °C)
*If the floor temperature is above that limit, the
heating will turn off regardless of the ambient Air
temperature. This ISU is only displayed if Temperature
Control Mode (ISU 299) is set to AF mode. The
maximum floor temp limit setting cannot be set lower
than 10 degrees above the minimum floor temp limit
setting.
577 Floor Economy
Mode
0 = Off
1 = On
If enabled, Low Floor Temperature Limit (ISU 575)
will be disabled during Away and Sleep period. This
ISU is only displayed if Temperature Control Mode
(ISU 299) is set to AF mode and (ISU 120) is set to
programmable.
578 Freeze protection
temperature
A mode:
40 °F to 50 °F (40 °F);
4.5 °C to 10.0 °C (4.5 °C)
A/AF mode:
40 °F (4.5 °C) to Min. Floor Temp.
Limit
F mode:
40 °F (4.5 °C) to Min. Heat Temp.
Setpoint
The thermostat operates the heat whenever the room
or floor temperature falls below that limit, even when
the system mode is set to Off. Default setting is 40 °F
(4.5 °C) for all A/AF/F regulation modes.
Freeze protection temperature cannot be set above the
minimum floor temperature limit in AF mode or above the
minimum heat temperature setpoint in F mode.
1400 Backlighting 0 - On Demand
1 - Continuous
Common wire needed for Continuous Backlight
1401 Inactive Backlight
Brightness
1 - 5 This ISU is only displayed if Continuous Backlight
selected.
1=minimum, 5=maximum inactive backlight
brightness
1410 Clock Format 12 / 24
1415 Daylight Saving Time 0 = Off
1 = On
Set to Off in areas that do not follow Daylight Saving
Time.
1420 Temperature Display
Offset
3 - 3 °F (0)
1.5 to 1.5 °C (0)
0°F - No difference in displayed temperature and the
actual room temperature. The thermostat can display
up to 3 °F (1.5 C) lower or higher than the actual
measured temperature.