Williams 2903511, 2903512 installation instructions

Setting and Adjustment

Initial Conditions

A.Set the Setting/Regulator switch (Figure 10-B) in RUN position (center). Press the Reset button R. The display will flash.

B.With the Setting/Regulator switch selector in position (right), press the Reset button, R, the display error EEE will appear. Move the Setting/Regulator switch, (Figure 10-B) to the RUN (center) position. The display will disappear.

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

C.	frozen.	0:00
	If the Setting/Regulator switch, (Figure 10-B) is moved to position the display is
D.	If the Setting/Regulator switch, (Figure 10-B) is moved to RUN position the display is	1 2 3 4 5 6 7
	frozen with the colon flashing.	0:00

E.If the Setting/Regulator switch, (Figure 10-B) is moved to position (right), the

☼	1 2 3 4 5 6 7
display is flashing: ,1,1.
Manual Operation	1 ☼
	0:00

Move the On/Off switch, (Figure 10-A) to the I position (left).

•The symbol of a light (☼) will appear on the display. In this condition the heater is controlled by the furnace thermostat 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 (☼) on the display will disappear. In this condition the furnace is turned off.

Move the On/Off switch, (Figure 10-A) to the AUTO position (center).

•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 position (left).

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 (center). 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 position (right). On the right side of the display the number 1, 1,☼ will appear. The ON time may now be set.

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 (, Figure 10-C). The right side of the display will show a number 2 without the light symbol. The OFF time may now be set.

17

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

0:001☼

1 2 3 4 5 6 7

0:001☼

1 2 3 4 5 6 7

9:031☼

1 2 3 4 5 6 7

0:001

1 2 3 4 5 6 7

11:04