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Operation should be carried out according to the indications of the attached docu-
ments and instructions from the authorized professional installers to avoid toxication
accidents which may cause death.
The heater can only be operated after being equipped with an exhaust pipe. The
exhaust pipe should be installed by professionals.
Confirmation of category of gas: the category of gas used must be identical to that
specified on the nameplate of the water heater without prior permission, and no
forced use of dierent categories of gas.
Only for natural gas: a color change of the flame form blue to yellow indicates that
other gas and air is mixed into the natural gas. Please immediately make contact with
its installer.
Only for liquefied petroleum gas:flame of the water heater is high one minute and low
the next indicates that the decompression valve at the exit of gas vessel maybe breaks
down. At this moment, stop use of the water heater and replace with a qualified
decompression valve.
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CAUTION: Gas accident
Take the electrical plug out before clean or maintenance
Do not touch the receptacle with a wet hand, as this will have the risk of electric
shock.
Please insert the power supply plug securely on the plug. A dusty or loose plug might
be the cause of an electric shock or fire.
Do not pull out the plug by pulling the power cord, as this might break the internal
wire of the cord and further lead to wire heating or a fire.
This unit must be connected to a ground wire. Make sure the ground wire is connected
properly.
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CAUTION: Electric accident
During operation, don't get close to any flammable and combustible materials or other
similar ones.
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CAUTION: Precautions for fire
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