Roberts Gorden Dualair DA260G Series, Инструкция по установке, наладке, обслуживанию и эксплуатации

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It is important that flues are designed to prevent the adverse effects of down draughts which cause
the products of combustion to spill from the draught diverter and it is essential that the spillage test in
Section 4.6 is carried out. If spillage is occurring then it is recommended that the flue is terminated at
least one metre above the highest point of the roof or any close obstruction.
If the flue extends more than 2m above the roof it should be adequately supported by guy wires
(see Fig.3.1).
The top of flues should be fitted with a "Rain Cap".
90º bends and horizontal pipe must not be used in flues. As a guide, if 135º bends are used to
offset the flue, then at least one metre of vertical flue must be added to the minimum height to
overcome the resistance of each 0.33 m of none vertical flue or each two 135º bends.
Flues should be assembled with their sockets facing upwards inside of the building up to the rain
collar, and with their sockets facing downwards outside of the building above the rain collar. The
sections should be secured together using "Monel" blind rivets or sheradized P.K. screws and be
supported so that the heater does not carry the weight of the flue.
If the flue passes through a wall or ceiling of combustible material it must be enclosed by a sleeve of
noncombustible material and be separated from the sleeve by at least a 25 mm air gap. The temperature
of any combustible material near the flue or heater must not exceed 65°C when the heater is in
operation.
The flue must be at least 50mm from any other combustible material.
The joints between the flue and the roof or wall must be made good to prevent water ingress.
The joint between the flue and the female spigot of the heater must be sealed using a heat resistant
rope and fire cement.
3.5 Air Supply
It is important to ensure that there is adequate air supply at all times for both combustion and heating
requirements. Particular attention must be paid to this point when the heater is installed in a separate
room. Ventilation should prevent the Plant room temperature exceeding 32°C and any negative air
pressure within the room containing the heater.
Any plant room containing air heaters will require permanent air vents direct to outside air in compliance
with BS 6230.
Most traditional building constructions will provide air changes of at least 0.5/h without the need for
ventilation openings. In the case of a building having an air change rate less than 0.5/h, low level
ventilation will be necessary in accordance with B.S.6230.
3.4.2. All models
The flue must be terminated at least one metre higher than the section of the roof it intersects (see
Fig 3.1). Furthermore if the point of intersection with the roof is within 2.5m of a nearby structure the
terminal must be at least 1m above that structure.