Navien NFB Series - Page 45

45Installing the System Piping
3.6.11 Wiring Diagram - Optional Supply/Return Temperature Sensors
SUPPLY RETURN OUTDOOR DHW TANK
R
W
R
W
C
R
W
C
Temperature sensor
Thermal insulation
<NFB>
Cable tie
Note
To control the boiler supply or return water temperature using the external temperature sensors, configure the system accordingly.
On the front panel, press the Menu button (
) to enter the setting menu, and then select 3. Space Htg Operation > 4. SH Control
Method to select one of the control modes.