Setting The Dip Switches; Pcb Dip Switches; Front Panel Dip Switches - Navien NCB500-1.5S/37K 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 1 on the circuit board configures boiler type,
capacity, burner type, country, and discharge of condensate
function.
ON
1
DIP SW1
Switch Function
1 Boiler Type
2 Reserve
3&4 Capacity
5&6 Country
7&8 Boiler Model
2 3 4 5 6 7 8
Setting
SOLO ON
COMBI OFF
28kW 3-OFF, 4-OFF
37kW 3-ON, 4-OFF
41kW 3-OFF, 4-ON
54kW 3-ON, 4-ON
UK 5-OFF, 6-OFF
Not Used 5-ON, 6-OFF
Not Used 5-OFF, 6-ON
Not Used 5-ON, 6-ON
NCB500 7-ON, 8-OFF
DIP SW2
Switch Function
1 Reserve
3 Reserve
4 Reserve
5&6 Country

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
Setting
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
Setting the DIP Switches 31