KyungDong KDB-101GOM+ Installation Manual page 22

G O M + 표 준 형 - 영 문
You must use a flue (exhaust flue) that was
approved by our company.
Using unapproved flues (exhaust flue) may cause
exhaust gas poisoning due to exhaust gas leaks.
The flat portion of the flue should be
installed downward at about 5°angle to
prevent any reverse flow of the condensed
water or rain water into the boiler and turn it
downward toward the ground at 45° ∼90°
angle.
If condensed water or rain water reenter the
boiler, cause of the incomplete combustion, boiler
function reduction and shorten its use life.
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