System Details; Setting The Dip Switches; Pcb Dip Switches - Navien NCB-24LSWE Service Manual

4. System Details

4.1 Setting the DIP Switches

CAUTION
Do not remove the front cover
unless the power supply is turned
off or disconnected. Failure to do so
may result in electric shock.
The boiler has two sets of DIP switches on the main circuit
board (PCB) and two sets of DIP switches on the front
panel. DIP switches are used to control the boiler's
functions. Set the DIP switches as required based on the
installation.

4.1.1 PCB DIP Switches

Setting the Circuit Board DIP Switches (8-way)
The DIP switches on the circuit board configure the boiler's
model and gas settings. These configurations are set at the
factory and should not be changed. The following tables
describe the functions of the DIP switches and their
settings.
Eg.) DIP Switch On/Off
20 NCB Service Manual
Switch Function
Normal operation
24/28/34
LSWE
40LSWE
24/28/34
Operation
1 & 2 LSWE
status
40LSWE
24/28/34
LSWE
40LSWE
3 & 4 Capacity
Burner
5
type
6 & 7 Region
Setting
1-OFF, 2-OFF
DHW
MAX
1-ON, 2-OFF
DHW 2-
stage
MAX
MIN
1-OFF, 2-ON
1-stage
MIN
Heating
MAX
1-ON, 2-ON
Heating
2-stage
MAX
24LSWE 3-OFF, 4-OFF
28LSWE 3-ON, 4-OFF
34LSWE 3-OFF, 4-ON
40LSWE 3-ON, 4-ON
Bekaert 5-ON
Alantum 5-OFF
Europe 6-OFF, 7-OFF
Version 1.0