Press and hold down both the buttons for 3 seconds to change from one step to the next.
Release both buttons once the step has been reached.
Press thethe button to change the setting, if available.
Press and hold down both thebuttons for 3 seconds to go to the next step, OR
After 15 seconds of no-button activity, the display goes back to normal operation.

Display	Setting
User settings.
	MODE Select heat or off.
	UNITS Select the temperature units in degrees Fahrenheit or Celsius.
	BACKLIGHTSelect when the display backlight should operate. Options are Off Auto, and On. Auto operates the backlight for 30 seconds after a keystroke.
	SET FLOORSet the floor minimum temperature. Available when an auxiliary floor sensor is connected and the built-in room temperature sensor is on.
	TYPEDevice Type number. Hold the button to view the software version.
	ESCAPERelease the buttons to return to the home screen.

Display	Setting
Installer settings. Press the buttons together for 5 more seconds.
	AUXILIARY SENSORSelect the type of auxiliary sensor. Available when an auxiliary sensor is automatically detected. NONE = no auxiliary sensor, ROOM = Indoor Sensor, OUT = Outdoor Sensor, FLOR = Slab Sensor
	ROOM SENSORSelect if the built-in room temperature sensor is on or off. The built- in room sensor can only be disabled when an auxiliary room or slab sensor is connected.
	FLOOR MAXIMUMSet the floor maximum temperature in order to protect the floor covering. Suggested settings: Tile = 90°F (32°C), Wood Floor = 85°F (29°C)
	ESCAPERelease the buttons to return to the home screen.

For a full list of settings and operational details, please refer to the thermostat Installation and Operation Manual 518_D is available from www.tekmarControls.com

Product design, software, and literature are Copyright ©2013 by tekmar Control Systems Ltd., A Watts Water Technologies Company. Head Office: 5100 Silver Star Road, Vernon, B.C. Canada V1B 3K4, 250-545-7749, Fax. 250-545-0650 Web Site: www.tekmarControls.com