WT8840 TRADE WATER HEATER CONTROLS
INSTRUCTIONS TO THE
HOMEOWNER
WARNING
Fire or Explosion Hazard.
Can cause severe injury, death or property
damage.
1. IF YOU SMELL GAS:
• Turn off the gas supply at the appliance
service valve.
• Do not light any appliances in the house.
• Do not touch electrical switches or use the
phone. Leave the building and use a
neighbor's phone to call your gas
supplier.
• If you cannot reach your gas supplier, call
the fire department.
2. The water heater control must be replaced
in event of any physical damage, tampering,
bent terminals, missing or broken parts,
stripped threads or evidence of exposure to
heat.
WARNING
Scalding Hazard.
Can cause burns, severe injury or death.
Never move temperature setpoint knob past
the HOT setting without checking water
temperature at the faucet, and readjusting
until comfortably warm to the touch. Consider
the ages and health of all who will come into
contact with heated water.
IMPORTANT
Follow the operating instructions provided by
the manufacturer of your water tank
appliance. The information in this form
describes a typical water heater control
application, but the specific controls used
and the procedures outlined by the
manufacturer of your appliance can differ,
requiring special instructions.
Home and Building Technologies
In the U.S.:
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422
STOP: READ THE
WARNINGS ABOVE.
If the appliance does not turn on when the setpoint
knob is set several degrees above the previous
temperature, follow these instructions:
1. Set the temperature setpoint knob to OFF.
2. Turn off the main gas valve to the appliance.
3. Wait five minutes to clear out any unburned gas.
If you then smell gas, STOP! Follow step 1 in the
warning above. If you DO NOT smell gas,
continue with the next step.
4. Turn on the gas supply to the appliance.
5. Restart the appliance by performing lighting
procedure.
6. Set the setpoint knob to the desired setting.
7. If the appliance does not turn on, turn off the
gas supply to the appliance and contact a
qualified service technician for assistance.
8. Allow one minute for thermopile to cool before
re-lighting pilot.
TURNING OFF THE
APPLIANCE
Complete Shutdown
1. Turn device knob to OFF. Turn off the gas supply
to the appliance. Appliance will completely shut
off.
2. Follow the procedure in the Instructions to the
Homeowner section above to resume normal
operation.
® U.S. Registered Trademark
© 2017 Honeywell International Inc.
34-00013EF—03 M.S. Rev. 04-17
Printed in United States