Setting The Dip Switches; Pcb Dip Switches; Front Panel Dip Switches - Navien NCB700-2S Plus 42K Installation & Operation Manual

7. Setting the DIP Switches

CAUTION
Do not remove the front cover unless the power to the
boiler is turned off or disconnected. Failure to do so may
result in electric shock.
The boiler has 2 sets of DIP switches on the main circuit board
(PCB) and 2 sets of DIP switches on the front panel. DIP switches
are used to control the functionality of the boiler. Set the DIP
switches appropriately, based on the installation environment.

7.1 PCB DIP Switches

Dip Switch (Set of 8)
The DIP SW on the circuit board configures boiler type, capacity,
burner type, country, and discharge of condensate function.
DIP SW
Switch Function
1 Boiler Type
2 Reserve
3 & 4 Capacity
5 & 6 Country
7 & 8 Boiler Model
54 Setting the DIP Switches
ON
1 2 3 4 5 6 7 8
Setting
COMBI OFF
- -
42kW 3-OFF,4-ON
54kW 3-ON,4-ON
UK 5-OFF,6-OFF
NCB700 7-OFF,8-ON

7.2 Front Panel DIP Switches

Dip Switch (Set of 2)
The DIP SW on the front panel configures the fuel selection.
Switch Function
1 & 2 Fuel selection
1 2
O
N
Setting
LNG(G20) 1-OFF, 2-OFF
Not Used 1-OFF, 2-ON
LPG(G30) 1-ON, 2-OFF
LPG(G31) 1-ON, 2-ON