Setting And Adjustment - Williams 2903512 Installation Instructions And Owner's Manual

Initial Conditions
A. Set the Setting/Regulator switch (Figure 10-B) in RUN position (centre). Press the
Reset button R. The display will flash.
B. With the Setting/Regulator switch selector in
R, the display error EEE will appear. Move the Setting/Regulator switch, (Figure 10-B)
to the RUN (centre) position. The display will disappear.
C. If the Setting/Regulator switch, (Figure 10-B) is moved to
frozen.
D. If the Setting/Regulator switch, (Figure 10-B) is moved to RUN position the display is
frozen with the colon flashing.
E. If the Setting/Regulator switch, (Figure 10-B) is moved to
display is flashing:
Manual Operation
Move the On/Off switch, (Figure 10-A) to the I position (left).
•
The symbol of a light (
and is independent of the timer program.
Move the On/Off switch, (Figure 10-A) to the O position (right).
•
The symbol of the light (
Move the On/Off switch, (Figure 10-A) to the AUTO position (centre).
•
The program function is activated. The furnace will operate according to the programs. The furnace is controlled both
by the timer and by the furnace thermostat.
Day and Time Setting
A. The Setting/Regulator switch, (Figure 10-B) is placed in the
B. To set the day of the week, press the Day Selector button, (1....7, Figure 10-D), a triangular
shaped indicator proceeds one day at a time. Number 1 stands for Monday, number 2
stands for Tuesday, etc.
C. To set the time press the Hour Selector button (h, Figure 10-E) to set the hour and the
Minutes Selector button (m, Figure 10-F) to set the minutes. The hours are set using military
time.
D. After setting the day and the time move the Setting/Regulator switch, B to the RUN position
(centre). The display is frozen and the colon is flashing.
Programming the Timer
Sixteen settings may be programmed on the timer. Eight odd numbers (1-3-5-7-9-11-13-15) for the
ON position and eight even numbers (2-4-6-8-10-12-14-16) for the OFF position. Program numbers
☼
are to the left of the symbol on the display.
A. Move the Setting/Regulator switch, (Figure 10-B) to the
of the display the number 1, 1,
B. Press the Day selection, (1......7, Figure 10-D) button to the day or the block of days you
want the furnace to turn ON. Number 1 stands for Monday, etc. To set the desired time,
press the Hours Selection (h, Figure 10-E) button to set the hour and the Minute Selection
(m, Figure 10-F) button to set the minutes (for example 09:03). The time is set using military
time.
C. Press the Program Selection (
number 2 without the light symbol. The OFF time may now be set.

Setting and Adjustment

☼
,1,1.
☼
) will appear on the display. In this condition the heater is controlled by the furnace thermostat
☼
) on the display will disappear. In this condition the furnace is turned off.
☼
will appear. The ON time may now be set.
, Figure 10-C). The right side of the display will show a
position (right), press the Reset button,
position the display is
position (right), the
position (left).
position (right). On the right side
18
1 2 3 4 5 6 7

0:00
1 2 3 4 5 6 7

E EE
1 2 3 4 5 6 7

0:00
1 2 3 4 5 6 7

0:00
1 2 3 4 5 6 7

☼
1
0:00
1 2 3 4 5 6 7

0:00
1 2 3 4 5 6 7

15:16
Example: Set
Wednesday, 15:16
hours (military time).
1 2 3 4 5 6 7
☼
1
0:00
1 2 3 4 5 6 7

☼
1
0:00
1 2 3 4 5 6 7

☼
1
9:03
1 2 3 4 5 6 7

1
0:00
1 2 3 4 5 6 7

1
11:04