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The first operation of the heater must be done by authorised service agency.
Because of this, connect with your local authorised service agency.
Make sure the used gas type is the same with the one stated in the brand
plate.
Be sure all connections of water heater are true and complete.
Before operating the water heater, follow below explanations respectively.
5. USING OF THE WATER HEATER
5.1 The Operation and Setting Of The Water Heater