tekmar 521 Programmable Thermostat Installation - Manual (Page 15)

© 2014 521_D - 01/14
15 of 28 A Watts Water Technologies Company
Programmable Settings
1. Press and hold down both the and buttons together to enter the Programming
Menus.
2. While in the
Programming
Menus, the MODE
button changes
function to become
the MENU button.
Press the MENU
button to change
from one menu to
the next.
PRGM
MENU
PRGM
MENU
PRGM
MENU
PRGM
MENU
PRGM
MENU
Navigation
PRGM
MENU
3. While in the
Programming Menus,
the HOLD button
changes function to
become the PRGM
(program) button.
Press the PRGM
button to enter the
menu.
4. While inside a menu, the HOLD button changes to become the ITEM button.
Press the ITEM button to change from one setting to the next.
5. Press the or button to change and save the setting's value.