Bradford White 238-47808-00A Installation And Operation Manual page 34

Setting the Setback
Control Schedule – Initial Set-up
Lock in Leave Period Start Time
Step 10: Press the RIGHT (Next) button to set the Leave start time, which is shown in Figure 57.
Select AM / PM
Step 11: Next, using the UP (index AM / PM) or DOWN (index AM / PM) buttons, select AM / PM, as
shown in Figure 58.
Lock in AM / PM
Step 12: Press the RIGHT (Next) button to lock in AM / PM. This is shown in Figure 59.
Figure 57
Figure 58
Figure 59
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"AM"/"PM" flashes