tekmar 542 Thermostat Installation - Manual (Page 2)

© 2007 D 542 - 08/07 2 of 28
Table of Contents
Table of Contents ............................................................2
Display and DIP Switches ..............................................2
Dip
Switches ...........................................................2
Access Levels .........................................................3
Display and Symbols Description............................3
User Interface .........................................................4
Setup ..............................................................................5
View
Menu .............................................................5
Adjust Menu ............................................................6
Time Menu ..............................................................9
Scene Menu .......................................................... 10
Schedule Menu ..................................................... 11
Miscellaneous Menu ............................................ 14
Thermostat Operation .................................................. 16
Auxiliary Sensors ................................................. 16
Mode of Operation ............................................... 16
Adjusting the Temperature ................................... 17
Cycles Per Hour ................................................... 18
Heating Terminal Units ......................................... 18
Heating Operation ................................................ 19
Cool Groups .........................................................20
Time Clock ............................................................20
Setting the Schedule .............................................20
Optimum Start / Stop ........................................... 21
Scenes .................................................................22
Away Hold ............................................................23
Offset ...................................................................23
Units of Temperature ............................................23
Backlight ..............................................................23
tN4 Address ......................................................... 24
Pump Exercising ................................................... 24
Error Messages ............................................................25
Cleaning the Thermostat .............................................28
Warranty .......................................................................28
Display and DIP Switches
Dip Switches
tN4 System Control (DIP Switch #2)
A tN4 System Control is a control, not a thermostat, that
the 542 thermostat connects to through the tN4 bus. All
tN4 compatible Outdoor Reset Modules are tN4 System
Controls.
•
• If the thermostat is connected to a tN4 System Control,
set the tN4 System Control DIP switch to tN4 System
Control (down position).
• • If the thermostat is not connected to a tN4 System
Control, set the tN4 System Control DIP switch to None
(up position).
Lock / Unlock (DIP Switch #1)
Use the Lock / Unlock DIP switch to lock or unlock the
Access Level of the 542.
•
• To unlock the Access Level, set the DIP switch to the
unlocked (down) position.
• • To lock the Access Level, set the DIP switch to the locked
(up) position. Once locked, a padlock is displayed in the
lower right corner of the display and the Access Level
cannot be changed.
Note: The tN4 System Control’s Lock / Unlock DIP switch
overrides the Lock / Unlock DIP switch on the 542. Set
the tN4 System Control’s Lock / Unlock DIP switch to the
Unlock position before Access Levels can be changed on
the thermostat.