PAGE 6 Reznor, AB - 2 Gas, GB 2019-08, D301177 Issue A
Flueing
The gas fired air curtain must be installed with
a fixed flue. The fan is fitted with a 130mm
diameter female outlet. (Flue and fittings can be
supplied by the manufacturer).
The flue pipe should be adequately supported at
regular intervals from the building structure and
terminated externally with a British Gas tested
and certified GC1 terminal.
The maximum flue length is 7m and the
maximum number of bends is two on individually
flued appliances. The flue may be installed
vertically or horizontally, noting that horizontal
flues MUST be terminated vertically. (See figures
8 & 9).
Flue Technical Details
Model
AB 225 - 2
AB 175 - 2
Gas type
Nat gas (G20)
Prop. (G31)
Nat. gas (G20)
Prop. (G31)
Mass flow rate of flue
gasses (kg/s)
0,03337
0,0332
0,02576
0,0283
Flue gas temp. At flue
outlet (ºC)
188
173
189,5
187
Flue pressure positive
(Pa)
8
8
Ventilation requirements
In buildings having an air change rate of less than
0.5 per hour, additional mechanical or natural
ventilation is required. For detailed information
please see BS6230 section 5.2.2.2.1.1.
Mechanical ventilation
Should be installed to meet a minimum of 0.5 air
changes per hour using appropriately sized fans
interlocked with the heaters.
Natural ventilation
Low level ventilation openings with a free area of
at least 2cm2/kW shall be provided. See section
5.2.2.2.1.2.
Installation Details (Cont)...
