© 2008 D 540e - 02/08
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Table of Contents
Table of Contents ........................................................2
Display and Switch Settings .......................................2
Switch
Settings
...................................................2
Display and Symbols Description........................3
Button
Operation
.................................................4
Setting the Temperature ......................................4
Display Settings ..........................................................5
User
Settings
.....................................................5
Adjust
Menu
For installer use only
......................6
Sequence of Operation ..............................................7
Heating
Operation
..............................................7
Cooling
Operation
..............................................7
Fan
Operation
....................................................7
Outdoor Temperature Display .............................8
Schedules
..........................................................8
Optimum
Start
....................................................8
Scenes
...............................................................8
Cool Group Master ..............................................9
Backlight
.............................................................9
Warm Weather Shutdown ..................................9
Freeze
Protection
...............................................9
Cycles Per Hour .................................................9
Synchronization
.................................................9
Indoor Temperature Feedback ......................... 10
System Pump ................................................... 10
Exercising
......................................................... 10
Zone Test ......................................................... 10
Max
Heat
.......................................................... 10
Flushing
........................................................... 10
tN4
Address
..................................................... 10
Error Messages ........................................................ 11
Cleaning the Thermostat ......................................... 12
Warranty ................................................................... 12
Display and Switch Settings
Switch Settings
1
2
3
4
tNt 540e
540e
1001-07
1
2
3
4
Switch
Position Action
1
ON
Setback
The thermostat follows a
programmable setback
schedule as a schedule
member if available.
OFF
OFF
The thermostat does not follow
a programmable setback
schedule.
2
ON
Scene
The thermostat responds to
changes in the scene (system
wide manual overrides).
OFF
OFF
The thermostat does not
respond to scenes.
3
ON
None
The thermostat is not part of a
cooling group.
OFF
Cool Master 1
The thermostat is a master of
cooling group number 1.
4
ON
Hydronic
Hydronic heat source.
OFF
Other
Other heat source (Furnace,
Electric).
*Read the Sequence of Operation for detailed information on
each of the switch setting features.