Dimensions - Navien NCB300-28K Installation & Operation Manual

2.5 Dimensions

The following diagrams show the dimensions of the boiler and the table lists the supply connections.
Overhead View
197.5 mm
16 About the Boiler
395 mm
A
Supply Connections
Description
A Flue exhaust/Air intake
B Central heating supply
C Hot water outlet (DHW)
D Gas supply inlet
E Cold water inlet (DHW)
F Central heating return
Bottom View
B
C
170.6 mm 170.6 mm
56 mm 65 mm 56 mm
NCB300-28K
NCB300-37K
NCB300-41K
Diameter
Ø60/100,
Ø80/125
22 mm
15 mm
22 mm
15 mm
22 mm
D E F
65 mm 126 mm 126 mm 65 mm 65 mm