andrews ECOflo Series Installation And Service Manual page 53

°F
Fig. 35
°F
Fig. 36
Issue 2 14/07/16
°F/°C
Symbol '°F/°C'
stops flashing
Setpoint shown
in °F
4. Press 'SET' button to confirm °F or °C format. F°/ °C will
stop flashing. Setpoint display will appear in the format
selected (°F or °C) in 10 seconds (Fig. 35).
5. Pressing 'SELECT' button will return display to setpoint in
format selected (°F or °C) immediately (Fig. 36).
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 and pilot if the water heater temperature exceeds 93°C
Should the ECO function (open), the water temperature should
be reduced to approximately 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.
Warning
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.
Operating Instructions 5
53