About the Boiler 9
Specifications Unit NCB700-42C NCB700-54C
Flue exhaust/Air intake system types - B23-B33-B53-C13-C33-C43-C53-C63-C83
Flue exhaust/Air intake system diameters mm Coaxial Ø60/100 and Ø80/125–Dual duct Ø80/80
Max. gas pipe pressure drop Pa 294 294
Max. horizontal coaxial length Ø60/100 m 20
Max. vertical coaxial length Ø60/100 m 21
Equivalent elbow length @ 90° Ø60/100 m 1.3
Equivalent elbow length @ 45° Ø60/100 m 1.0
Max. horizontal coaxial length Ø80/125 m 68
Max. vertical coaxial length Ø80/125 m 70
Equivalent elbow length @ 90° Ø80/125 m 2.2
Equivalent elbow length @ 45° Ø80/125 m 1.0
Equivalent length of adapter Ø60/100 => Ø80/125 m 0.5
Max. dual duct length Ø80/80 m 110
Equivalent elbow length @ 90° Ø80 m 2.2
Equivalent elbow length @ 45° Ø80 m 1.4
Hydraulic connection
diameter
Central Heating mm 22
DHW mm 15
Gas supply mm 22
Dimensions (Width x Depth x Height) mm 440 x 335 x 695
Total boiler weight (lift weight) Kg 43 46
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