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38 Connecting Electrical Supplies
8.5 OpenTherm® Protocol
OpenTherm® is an industry standard modulating control
available from several control manufacturers and the NCB
LDWE boiler has an OpenTherm® interface. This enables
our modulating range of OpenTherm® room controls to be
connected without any further modifications.
NCB LDWE
OpenTherm® Protocol
Room Controller
1
2
3
4
5
6
8.6 Connecting the Navien Smart Room
Controller (Optional)
I
nstead of using your boiler with a generic roo
m
ther
m
ostat, you
can connect the Navien S
m
art Roo
m
Controller (NR-35D) to the
boiler and benefit fro
m
various additional features and
m
ore
efficient control of the heating syste
m
using a
m
obile device.
As the Navien NCB series boiler has a dedicated connector for
the Navien S
m
art Roo
m
Controller on the back of the front
panel, ter
m
inal connection at the ter
m
inal block is not re
q
uired.
Si
m
ply connect the Navien S
m
art Roo
m
Controller cable to the
2-pin connector.
Note
Ɣ
You need to install an app on your
m
obile device to
control the boiler fro
m
your
m
obile device.
Ɣ
Refer to the instruction
m
anual that is provided
with the Navien S
m
art Roo
m
Controller about the
additional features available with the controller.
8.3 Connecting the Room Stat or
OpenTherm
The boiler is designed to be connected to a Roo
m
Stat or
O
penTher
m
. The Roo
m
Stat or
O
penTher
m
cables are to be
connected to ter
m
inals 1 and 2 of the boiler ter
m
inal strip.
1
2
3
4
5
6
Detail View
8.4 Connecting the Outdoor Temperature
Sensor
The boiler is designed to be able to function with an outdoor
te
m
perature sensor. The sensor cables are to be connected to
ter
m
inals 5 and 6 of the boiler ter
m
inal strip.
1
2
3
4
5
6
Detail View
Summary of Contents for NCB-24LDWE
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