Navien NCB300-28K Installation & Operation Manual page 11

Specifications
Flue exhaust/Air intake system diameters
Max. gas pipe pressure drop
Max. horizontal coaxial length Ø60/100
Max. vertical coaxial length Ø60/100
Equivalent elbow length @ 90° Ø60/100
Equivalent elbow length @ 45° Ø60/100
Max. horizontal coaxial length Ø80/125
Max. vertical coaxial length Ø80/125
Equivalent elbow length @ 90° Ø80/125
Equivalent elbow length @ 45° Ø80/125
Equivalent length of adapter Ø60/100 => Ø80/125
Max. dual duct length Ø80/80
Equivalent elbow length @ 90° Ø80
Equivalent elbow length @ 45° Ø80
Hydraulic connection diameter
Dimensions (Width x Depth x Height)
Total boiler weight (lift weight)
10 About the Boiler
Unit
mm
Pa
m
m
m
m
m
m
m
m
m
m
m
m
Central Heating mm
DHW mm
Gas supply mm
mm
kg
NCB300-28K NCB300-37K
Coaxial Ø60/100 and Ø80/
125–Dual duct Ø80/80
167 294
8
8
1.3
1.0
27
28
2.2
1.0
0.5
9
2.2
1.4
22
15
22
395 x 283 x 680
29 33
NCB300-41K
294
33