Bradford White UCG100H199 Installation & Operation Manual page 34

Step 5: Pressing "SELECT" button will return display to setpoint in format selected (˚F or ˚C) immediately.
An automatic gas shut-off device (ECO) is incorporated in the sensor and control board which will shut off all gas supply
to the burner if the water heater temperature exceeds 200°F (93°C). Should the ECO function (open), the water
temperature should be reduced to approximately 120°F (49°C) and follow applicable Lighting Instructions to place the
water heater in operation. The water heater must have the problem corrected by a qualified service person before putting
the water heater back in operation. It is recommended that all service work be performed by a qualified service agency.
If the water heater is to remain idle for 30 days or more or is subjected to freezing temperatures while shut off, the water
heater and piping should be fully drained (See "To Drain the Water Heater") and the drain valve should be left fully open.
Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank for a long
period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To prevent the possibility of
injury under these conditions, we recommend the hot water faucet to be open for several minutes at the kitchen sink
before you use any electrical appliance which is connected to the hot water system. If hydrogen is present, there
will be an unusual sound such as air escaping through the pipes as hot water begins to flow. Do not smoke or have
open flame near the faucet at the time it is open.
IMPORTANT- In the event of an emergency, turn off the gas and electric to the appliance.
IMPORTANT- The water heater should be inspected at a minimum annually by a qualified service technician
for damaged components and/or joints not sealed. DO NOT operate this water heater if any part is found
damaged or if any joint is found not sealed
Water heaters are heat producing appliances. To avoid damage or injury there must be no materials stored against
the water heater or vent system, and proper care must be taken to avoid unnecessary contact (especially by
children) with the water heater and vent system. UNDER NO CIRCUMSTANCES SHALL FLAMMABLE
MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS
WATER HEATER, VENT SYSTEM OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER
HEATER OR VENT SYSTEM.
idle
Operational
Status

SELECT
P ress select
WARNING
NOTICE
WARNING
°F
SET
Step 5
34
Setpoint shown in °F