3.5 The pipeline connection as showed below is not allowed.
Notes:
4. CAUTIONS
4.1 The distance between the ceiling and exhaust fan should be
above 5cm.
4.2 The height of the exhaust fan installation: at least 2.3m
above the ground.
4.3 Avoid installing the exhaust fan in damp or high-temperature
area, and avoid poisonous gases entering the pipelines.
4.4 A multi-pole switch must be used to install the
appliance. The gap between switch contacts must be no
less than 3mm.
4.5 In general, the exhaust fan is controlled by switch, try to
reduce the switch use as far as possible, if the fan is off for a
long time, you'd better shut down the bipolar switch.
4.6 Provide an inspection hole in the ceiling and inlet hole for
fresh air flowing in the room.
4.7 Avoid the back-flow through the opening pipeline.
4.8 If the electrical source soft line is damaged, it must be
changed with the special soft line or soft line provided by the
manufactory or maintenance department. To avoid any danger,
it must be replaced by a qualified person.
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