Technology Manual – Instantaneous Gas Water Heater 5L/6L CF
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EXHAUSTING PIPE
1) This product is Natural-flue type. While operating it consumes oxygen from the air of the room
and exhausts the fume out of the room by the flue pipe
2) The flue pipe must be fixed on the heater, and its installation should accord with the above
drawing
3) The flue pipe should be made up of heat-resistant and corrosion-proof materials (stainless steel
mainly employed by MTS). The joint of the flue should be reliably sealed without leakage.
4) The flue must have a capability sufficient to exhaust the fume, and the draft vacuity at the exit of
the fume should be no less than 3Pa.
5) The horizontal part of the flue should be laid in a slope of 1%~2% down the outside, and its length
must less than 3m.
6) There must be less than 4 elbows.
7) The vertical flue at the top part of the heater must be more than 250mm.
8) At the outlet of the flue, there should be a flue cap to prevent wind, snow and rain, and should not
be placed at a windy spot with a distance of the nearby building of at least 600mm.
9) It forbids to install the flue pipe in the ventiduct or common flue.
