Setting the D
I
P Switches 35
CAUTION
Do not remove the front cover unless the power to the
boiler is turned off or disconnected.
Failure to do so
m
ay
result in electric shock.
The boiler has 2 sets of D
I
P switches on the
m
ain circuit board
(PCB) and 2 sets of D
I
P switches on the front panel. D
I
P switches
are used to control the functionality of the boiler. Set the D
I
P
switches appropriately, based on the installation environ
m
ent.
7.1 PCB DIP Switches
Dip Switch (Set of 8)
The D
I
P SW 1 on the circuit board configures operation status,
boiler
m
odel/capacity, burner type, and country.
1
2 3 4
5 6 7
8
ON
Switch Function
Setting
1 &
2
O
peration
Status
N
ormal
O
peration
1-
O
FF,
2
-
O
FF
24
/
28
/
34
LDWE
DHW MAX
1-
ON
,
2
-
O
FF
4
0LDWE
DHW
2
-stage
MAX
24
/
28
/
34
LDWE
MI
N
1-
O
FF,
2
-
ON
4
0LDWE
1-stage MI
N
24
/
28
/
34
LDWE
Heating MAX
1-
ON
,
2
-
ON
4
0LDWE
Heating
2
-stage
MAX
3
&
4
Capacity
24
LDWE
3
-
O
FF,
4
-
O
FF
28
LDWE
3
-
ON
,
4
-
O
FF
34
LDWE
3
-
O
FF,
4
-
ON
4
0LDWE
3
-
ON
,
4
-
ON
5
Burner
Type
Bekaert
5
-
O
FF
6
&
7
Country
Europe
6
-
O
FF,
7
-
O
FF
8
Boiler
Type
Combi
8
-
O
FF
System
8
-
ON
7.2 Front Panel DIP Switches
Dip Switch (Set of 8)
The D
I
P SW on the front panel configures the fuel selection,
source of the heat de
m
and, and te
m
perature control standard.
1 2
3
4 5 6
7
8
O
N
Switch
Function
Setting
1
&
2
Fuel
Selection
G20 (LNG)
1-
O
FF, 2-
O
FF
G25, G27(LNG)
1-
O
FF, 2-
O
N
G30 (LPG)
1-
O
N, 2-
O
FF
G31 (LPG)
1-
O
N, 2-
O
N
4
&
5
Heat
De
m
and
Panel
4-
O
FF, 5-
O
FF
O
penTher
m
Re
m
ote Control
4-
O
N, 5-
O
FF
Roo
m
Stat
4-
O
FF, 5-
O
N
230 VAC Roo
m
Stat (Syste
m
boiler
only)
4-
O
N, 5-
O
N
6
Te
m
perature
Control
Standard
Supply Water
6-
O
FF
Return Water
6-
O
N
7. Setting the DIP Switches
Summary of Contents for NCB-24LDWE
Page 65: ...Appendices 65 12 4 Ladder Diagram 3 15A...
Page 69: ...Memo...
Page 70: ...Memo...
Page 71: ...Memo...
