tekmar 538 Thermostat Quick Start - Manual (Page 3)

© 2014 538_Q - 02/14 3 A Watts Water Technologies Company
6. Close Thermostat
pivot
tab
8. Critical Settings
The following settings are essential to the successful operation of the system.
Important
Note: Set switch setting #3 and tekmarNet ® system control to Unlock to change
Access level to Installer. Return to Lock setting once installation has been completed.
• Press and hold down both the and buttons for 2
seconds to change from one step to the next.
• Release both buttons once the step has been reached.
• Press the or the button to change the setting, if
available.
• Press and hold down both the and buttons for 2
seconds to go to the next step, OR
• After 10 seconds of no button activity, the display goes
back to normal operation.
Press
+
Together
7. User Interface