The boiler adopts an environmentally friendly combustion method - full premixed combustion, and the gas and air are precisely adjusted and premixed in advance to ensure more complete combustion.
The boiler adopts a double-drum longitudinal "D" type arrangement structure; water, steam or steam-water mixture flows in the pipe; flame burns and flue gas flows outside the pipe, forming extremely fast steam-water.
Combi 70 & Combi 90 Oil 13 3 - GENERAL INFORMATION Fig 8 - Air supply for room sealed balanced flue Fig 9 - Combustion and ventilation air supply for conventional flue Minimum size of air vents required - see Figs 8 and 9 Combi 70 14 Combi 90 Vent A 113 cm² (18 in²) 145 cm² (23 in²) Vent B 226 cm² (36 in²
with Quadra-fire performance comes standard Browse a selection of quality pellet stoves wood burning stoves and gas stoves
ZWB appliances are combi for central heating (CH) and domestic hot water (DHW) heating according to the instantaneous water heating principle 31 Intended use The appliance may only be installed in a sealed unvented central heating system 33 Gas type The code number indicates the gas family according to AS 4552: Code number Wobbe
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