Navien NCB-180 Service Manual page 48

Item
(Q) Model and Capacity
(R) Information on Gas Type
(S) Altitude setting
information
Description
Currently set model and capacity
display
The 2nd & 3rd digits represent the
model and the 4th digit represents the
type of market.
Display of current gas
Display of current altitude level setting
Display
ex) Capacity 180, condensing for the American
market
ex) Capacity level 240, for the Korean market
ex) Setting error
NG
LP
0~2,000ft
2,000~5,400ft
5,400~7,700ft
7,700~10,100ft