Ventilation; Flue Outlet - FULTON J Series Installation, Operation And Maintenance Manual

INSTALLATION - 2
2.3

VENTILATION

Adequate fresh, clean air is necessary for safe and efficient combustion, and should be provided
at high and low level in accordance with BS 6644 1991 and IGE/UP/10 Part 1 Communication
1676.
Note: Ensure that there is adequate ventilation in the boiler room. Lack of ventilation will create a high
temperature and cause control lockout. There is a minimum ventilation requirement to supply the air for
combustion.
Note: Do not keep exhaust fans running with windows, doors and vents closed, this will interfere with the
necessary boiler draught.
Note: Do not store chemicals such as perclorethylene in the boiler house, the fumes may damage the boiler and
flue and cause the burner to lock out on flame failure.
Note: see Appendix A - TI-117-J Series Dimensions & Specification for low and high level values.
2.4

FLUE OUTLET

The boiler is supplied with a stainless steel flue spigot that should be inserted into the flue outlet
in the back of the boiler and secured with the three angle clips supplied loose in the trim box. The
height and type of flue will be subject to local planning regulations and approvals.
The following information is only intended to provide assistance for the installation of a simple
flue. Where multi-boiler flues or difficulties are experienced, specialist advice should be obtained.
The flue diameter must be the same or larger than the flue flange provided with the boiler and the
outlet should be at least 1 metre higher than the nearest ridge to avoid down draughts. Where a
chimney cowl is fitted, care should be taken to ensure that the distance between the lowest point
of the cowl and the top of the flue is 1.5 x the diameter of the flue and that it is of the terminal
cone type.
Note: If the flue layout is such that it may produce an excessive up-draught, a draught stabiliser may be required.
Note: Avoid fitting 90° elbows whenever possible, if unavoidable compensate by increasing the flue diameter.
Note: Ensure all flue pipes from the boiler to the main flue have a rising pitch.
Page 4
Figure. 3 - Boiler Flue Connection
Fulton Ltd
JGASUK-IOMM-2015-2