Chimney flue and accessories  
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Chimney flue sizes for CARBOROBOT



For the CARBOROBOT boilers the necessary flue draught by the stopped ventilator fan is 10-20Pa. This is about 6-7m(18-20 foot) aktíve chimney tube lenght from inlet to the tube end.

Here is some drawings to help to define the chimney
placement
hight
Sizing 1
Sizing 2

Flues can be broken down into two main categories; metal and masonry. Metal chimneys, also called prefab.

Stainless steel chimneys
6 Inch Inside Diameter (28.3 Square Inches)
7 Inch Inside Diameter (38.5 Square Inches)
8 Inch Inside Diameter (50.3 Square Inches)
10 Inch Inside Dia. (78.6 Square Inches)
One thing that we notice from this table is that a 6" flue is almost 1/2 the size of an 8" flue. The natural tendency might be to think that a 6" flue is "only" two inches smaller that an 8" one, but in truth you can see the difference is much larger.

Masonry Flues
7 1/2 X 7 1/2 (31 Square Inches)
8 1/2 x 8 1/2 (41 Square Inches)
8 1/2 X 13 (70 Square Inches)
13 X 13 (99 Square Inches)
13 X 18 (156 Square Inches)

Masonry and prefab steel tube by the CARBOROBOT power


30-40kW
14x14cm
or insulated stainless tube diameter 130mm (6inch)


60kW
14x20cm
or insulated stainless tube diameter
180mm (6x7inch)


80kW
20x20cm
or insulated stainless tube diameter
180mm (8inch)



120-140kW
20x27cm
or insulated stainless tube diameter
200mm (8x10inch)


180-300kW
27x27cm
or insulated stainless tube diameter
250-300mm (10inch)


Prefab stainless steel flue

This chimney tubes offered for the CARBOROBOT boilers Inner tube material is stainless steel. Cover tube is aluminium. Inner tube diameter between 120- 350mm insulation 30 or 50mm. Possible lenght up to 15m
Insulation 500°C or 1200°C

Key elements for mounting of the flue

1. Fan. This must be installed in line with the flue but also made sure it is kept dry and remains within the boiler house.

2. Transition flange. This does not come with the boiler and has to be purchased separately. This allows connection with boiler to the flue.

3. Fan brackets. These can be purchased separately if required to hold the fan. They have rubber mounted ' feet' to reduce any noise produced by the fan.

4. The flue end cap.

5. Cleaning pipe / water trap. To allow collection of any moisture collected within the flue and for cleaning of fly ash and other ash build up.

6. Connection pipe. The fan joins at this point either at 45 or 90 degrees.

7. Flue pipe. An insulated flue needs to be used

8. Flue fixing clamps

9. Flue end cap should be fitted to stop the effect of high winds and heavy rain. The flue should be above the roof ridge height to allow natural draw so exhaust gases can get away easier.

Chimney parts









Accessories


Felxibile stainless steel double wall tube


Fan with transition flange


Transition flange and rigid tube for the fan


Console types


Noise reducing Fan brackets for any type (mostly recommended)


Wall console with rubber noise amortisators

Chimney draw regulator

Automatic regulator for the exhaust chimney

110-130-150-180-200-250 mm diameters
Heat load. max.350 °C.