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9 69-0643—1
Setting the Timer
■ Lift thermostat flip-up cover and you’ll find the
24-hour program dial, slotted in 10-minute
increments. Adjust the timer to the current
time by carefully turning the knob clockwise
. DO NOT reverse the knob.
■ When time is correctly set, the time indicator
arrow (triangle shape) will point to the correct
time and corresponding daytime (light) or
night-time (dark) band of the program dial.
See Fig. 3
Example: For 11 PM, the time indicator arrow
will point directly to the dark band. For 11
AM, the arrow will point to the light band.
Daylight Saving Time
When Daylight Saving Time starts, move the
knob carefully in a clockwise direction one
hour. When Daylight Saving Time ends, move
Fig. 3—Setting the timer.
the knob carefully in a clockwise direction 23
hours. Do NOT reverse the knob, or damage to
timer mechanism may occur.
TIME INDICATOR ARROW
TIMER
SETTING
KNOB
TIME
INDICATOR
ARROW
M 821
PROGRAM DIAL
PROGRAM
PIN (6)