Navien NCB300-28K, Service Manual

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18 Technical Data
3.2 Dimensions
The following diagrams show the dimensions of the boiler and the table lists the supply connections.
395 mm
680 mm
Supply Connections
Description Diameter
A Flue exhaust/Air intake
Ø60/100,
Ø80/125
B Central heating supply 22 mm
C Hot water outlet (DHW) 15 mm
D Gas supply inlet 22 mm
E Cold water inlet (DHW) 15 mm
F Central heating return 22 mm
Overhead View
A
197.5 mm
282.2 mm
119 mm
Bottom View
E B C D F
170.6 mm 170.6 mm
91.5 mm91.5 mm
100.1 mm100.1 mm
56 mm 56 mm 65 mm 65 mm 126 mm 126 mm 65 mm 65 mm
72.6 mm72.6 mm
31.7 mm31.7 mm
NCB300-28K
NCB300-37K
NCB300-41K