Williams 2903511 Installation Instructions And Owner's Manual page 14

This appliance has an electronic flame superv ision device. If the flame disappears the gas flow will be automatically
shut off and the red lamp will light instead of the green one. The appliance will attempt to relight if you do ONE of
the following:
A. T urn off the electric supply to the appliance for approximately 40 seconds and turn it on again; OR
B. T urn the thermostat knob to the zero setting, then turn it back to a comfortable setting after approximately 40
seconds; OR
C. Press the SUMMER/WINTER button to the SUMMER position (button down) for approximately 40 seconds and
set it back (button up) to the WINTER position.
1. T urn the thermostat knob to the Z ERO position.
2. T urn the I-O switch on the programmable clock to the ZERO position.
3. T urn off all electric supply to the appliance.
4. T urn the gas shutoff valve installed on the gas supply line upstream to the unit to the CLOSED position.
RESET
MIN
MAX
HUMIDIFIER: For better comfort this furnace is equipped with a humidifier. It is very
easy to use. Using a funnel, periodically add water to the small tank located on the
top left side of the furnace. Normally, the tank needs to be refilled after 4 - 5 days.
NOTE: The use of water low in limestone or distilled is advisable in order to prevent
any possible calcareous sedimentation that may be difficult to remove.
Anticalcareous tablets for humidifiers are commercially available. The humidifier
capacity is 11.8 fluid ounces (0.35 liters).
WHAT TO DO IF THE RED LAMP IS LIT
HOW TO SHUT OFF THE APPLIANCE
USING THE FEATURES OF YOUR
FURNACE
GREEN LAMP : It is lit when the flame is ON.
RED LAMP: In case the flame disappears, the gas flow will be shut off and the red
lamp will be lit. The furnace is locked-out. To reset the furnace, follow the instructions
above, "WHAT TO DO IF THE RED LAMP IS LIT."
MANUAL/PROGRAM BUTTON: When the button is down, the furnace keeps the
temperature set by the thermostat according to the clock's program. When the
button is up, the furnace thermostat maintains the temperature.
THERMOSTAT: Turn clockwise to increase the temperature, turn counterclockwise
to decrease it.
SUMMER/WINTER: When the button is up, the furnace will operate in heating mode
according to the thermostat and/or clock's program. When the button is down, the
appliance will provide ventilation.
MIN/MAX BUTTON: For faster heating, keep this button up. For soft heating and
silent operation, keep this button down.
HUMIDIFIER:
water filling hole
13