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Balanced flue

The CLASSICflo BALANCED offers all the advantages of the CLASSICflo but with the additional benefit of a balanced flue. The concentric flue system draws air from outside the building, making it suitable for properties where the air might be contaminated such as dry cleaners and hair salons where chemicals are used, or supermarkets.


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  • Features and benefits
  • Specifications
  • Literature
  • Energy labelling
  • Supplied with fittings pack including draught diverter, gas cock and water drain
  • Easy installation – right out of the box
  • Environmental savings and future proofed against the next level of ErP incoming in September 18
  • LCD controls
  • Easy control and fault diagnosis
  • Insulation system – non CFC insulation covers the sides of tank, reducing heat loss and improving jacket rigidity
  • Less energy use, improved efficiency and durability
  • Hydrojet® sediment reduction system
  • Longer and more efficient working life
  • Comes with the addition of a balanced flue
  • The concentric flue system draws air from outside the building, making it suitable for properties where the air might be contaminated

View product specification

When clicked this will open the product specification in PDF format.


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Heat input (gross) kW 11.1
Heat output kW 9
Gross thermal efficiency % 81 81
Standby heat loss kWh/day 2.23 2.66
NOx emissions (0% 02)
mg/kWh  31 36
ErP efficiency rating   
Water heater efficiency
% 62 62
Noise level dBA 0
Gas data    
Gas flow rate (natural gas) m3/h 0.93 0.93
Storage capacity Litre 145 179
Recovery rate at 50ºC rise Litre/hr 152 152
Recovery rate at 56ºC rise Litre/hr 136 136
Operating pressure (unvented) bar 3.5 3.5 
Minimum working pressure at 10.3bar
bar 1
Maximum working pressure bar 10.3 10.3
Fuse rating amp 5
Electrical power consumption max/min W 120 120
Electrical requirements V
230 230
Weight full kg 216 258
Weight empty kg 71 79
Maximum outlet temperature
ºC 80
Maximum flue gas temperature
ºC 300 300
Connection sizes
Inlet/outlet connections
BSP 3/4 3/4
Return connection
BSP 3/4 3/4
Gas connection (gas cock supplied)
BSP 1/2 1/2
Height of water heater
mm 1276 1505
Height to vent connection
mm 1613 1842
Diameter of water heater
mm  559 599
Flue diameter - conventional flue
mm  80 80
Flue diameter - concentric balanced flue
mm  n/a n/a
Service clearance    
Front mm 610 610
Sides mm 305 305
Above mm 1226 1226
Shipping width
mm 566 566
Shipping depth
mm 870 870
Shipping height
mm 1466 1692
Shipping weight
kg 80
Horizontal flue kit
  B212 B212
Vertical flue kit
  B211 B211
1 metre length flue
  E064 E064
0.5 metre flue
  E069 E069
90º bend
  E071 E071
45º bend
  E308 E308
Wall terminal guard
  E105 E105
Flat roof plate
  E065 E065
Angled roof plate
  E066 E066
Unvented system kit
Correx powered anode kit
Remote enable kit

The Energy Related Products Directive (ErP) has applied to all domestic and commercial heating and hot water products through Europe since September 2015.

From 26th September 2018 any water heater sold must have an efficiency/NOx output rating of C or above. In line with the new ErP legislation, we have upgraded our product range so they are all ErP compliant before the September deadline. Read more about the new product range, and legislation changes here.

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