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provide fresh air to other units, and places that may be exposed to direct wind
resistance. The open end of the air intake pipe should be at least 100 mm from
the wall where it is installed.
In order to prevent the backflow of the condensed water or the rain water to the
heater, the part of the waste gas pipe remaining outside the environment should
be placed as to make a horizontal angle of 3 degrees.
Squall to waste gas pipe may cause device out of function.
The environment where the water heater is mounted should be free from
blocking, preventing parts and projections during the repair and maintenance;
there should be sufficient space around the device for repair and maintenance.
