OIL CONDENSING BOILER
INSTALLATION AND USER MANUAL
INSTALLATION & USER MANUAL
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20
3.5.3 General instructions for flue installation
ㆍ Use the flue tubes supplied with the boiler.
(To prevent corrosion by condensate.)
ㆍ The horizontal portion of the flue should be sloped upwards by about 5°.
ㆍ The end of the flue may discharge condensate of form icicles, which may fall
on the passengers on the road. Avoid the places where people or vehicles
pass.
(Any loss caused by inadequate installation of flue tubes is not covered by the
Warranty.)
ㆍ There must be no obstacles within 1.5 m from the end of the flue. There must
be no opening which may allow the entry of exhaust gas.
ㆍ If the exhaust flue passes through a wall made of inflammable material,
insulate the through part with heat resistant silicone or other incombustible
material whose thickness is at least 20 mm.
ㆍ The joints of the exhaust stack shall be assembled with O-ring in sufficient
depth to prevent leak or disconnection.
ㆍ Seal the joints with heat-proof aluminum tape or other flame retardant
material (certified).
ㆍ The maximum length of the feed/exhaust air tube shall be 5 m or less, and 3
or less bends. The bend at the end of the exhaust tube top is not counted in
the number of bends.
(Resistance of one 90º elbow is equivalent to that of 2 m straight tube)
ㆍ Fix the middle part of the stack to prevent shaking by wind.
ㆍ It is recommended to provide independent flue for reach boiler set.
ㆍ There must be no obstacle within 60 cm from the end of the flue.
ㆍ Provide an inspection door for the embedded part in the ceiling.
ㆍ Extended exhaust smoke stack shall be supported with hangers at 900 mm
intervals to prevent deflection.
ㆍ Install a bird netting at the end of flue which can prevent birds, rats and
matters larger than 16 mm in diameter.
