Navien NCB-150E Service Manual page 22

Setting the Front Panel DIP Switches
Set of DIP Switches 1 (Set of 10)
●
The DIP SW 1 on the front panel configures the temperature unit, well pump, and high altitude settings.
SW1 NO. Application
1 Reserve
2 Temperature Unit
3 Well Pump
4 & 5 High Altitude
6 Reserve
7 Reserve
8 Reserve
9 & 10 Lime Alarm
Set of DIP Switches 2 (Set of 2)
●
The DIP SW 2 on the front panel configures the gas type setting.
SW1 NO. Application
1 Cascade vent
2 Gas type
ON
1 2 3 4 5 6
Setting
°C (Celsius)
°F (Fahrenheit)
Well Pump ON
Well Pump OFF
0-1,999 ft (0-609 m)
2,000-5,399 ft (610-1,645 m)
5,400-7,699 ft (1,646-2,346 m)
7,700-10,100 ft (2,347-3,078 m)
Off
6 Months Alert
12 Months Alert
12 Months Alert
Setting
Common Vent
Individual Vent
Natural Gas
Propane Gas
ON
7 8 9 10 1 2
NG LP
ON ON
2 2
Remarks
2-ON
2-OFF
3-ON Well Pump Mode
These settings are to be used with well system when an
3-OFF external pump is wired to the boiler.
High Altitude
4-OFF, 5-OFF
Above 2,000 ft (610 m), the boiler will de-rate by 4% for
each 1,000 ft (305 m) of altitude gain.
4-ON, 5-OFF
This boiler may be installed at elevations up to 10,100
ft (3,078 m) for use with Natural Gas and 4,500 ft (1,370
4-OFF, 5-ON
m) for use with Propane. To use the boiler at a specific
altitude, the DIP switches should be set as described
4-ON, 5-ON
above.
9-OFF, 10-OFF
9-ON, 10-OFF
Cascade system only
(Front Panel: after V1.2)
9-OFF, 10-ON
9-ON, 10-ON
Remarks
1-OFF
Cascade system only
(Front Panel: after V1.2)
1-ON
2-OFF
2-ON
System Details 21