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Leviton 6124 manual:http://waterheatertimer.org/images/6124-manual.pdf
If you have different timer, look at link below to help identify timer.
Leviton Timers:http://waterheatertimer.org/Leviton-timers.htmlLeviton 6124 timer instructions
Timer comes with plastic protector over display >> remove protector to see display.
Large button is manual override.
After timer is wired, push override to make sure Load turns ON and OFF.
Timer has 3 small buttons located below manual override used for programming
Display is divided into 24-hours with am times on left and pm on right.
24 Hour day is divided into 1/2 Hour segments
Each 1/2 hour must be set for ON or OFF
Start by pushing left-side event-cursor-advance-button and it scrolls down each 1/2 Hour.
Once you arrive at 1/2 hour > make decision if you want timer ON or OFF for that half hour.
Press event-set-reset-button in center to set ON-OFF for that 1/2 hour.
Press center event-set-reset-button and solid black rectangle fills in for that half hour.
Solid black rectangle means timer ON for that 1/2 Hour.
Once solid square is selected, press event-cursor-advance-button and cursor advances again and starts filling in black rectangles for each 1/2 Hour period.
Keep filling in black rectangles for all times you want timer ON.
When you reach 1/2 Hour period you want timer OFF, then press center event-set-reset-button so that no black rectangle is visible for that 1/2 hour.
No black rectangle means timer is OFF for that half hour.
To set current time, use right-side time-advance-button.
Press and hold time-advance and time cursor advances down through the am and then pm hours.
Stop cursor at current time, and timer is ready.