50 Installing the System Piping
Wiring Diagram - Optional Universal Temperature Sensors (for Supply/Return)
SUPPLY
TEMPERATURE SENSOR
RETURN
OUTDOOR
T/S_ZONE3
R
W
C
T/S_ZONE2
R
W
C
T/S_ZONE1
R
W
C
AC24VN
AC24VL
lLWCO
R
W
C
T/S_Recir
Temperature Sensor
Thermal insulation
Return Temperature Sensor (optional)
Supply
Temperature
Sensor
(recommended)
<NCB-H>
Cable tie
Note
●
To control the boiler supply or return water temperature using the universal temperature sensor,
configure the system accordingly. On the front panel, press the Menu button (
) to enter the
setting menu, and then select 2. Space Htg Operation > 5. SH Control Method to select one of the
control modes.
●
For best performance, wrap the sensor and pipe section with thermal insulation.
●
Universal temperature sensors are available for purchase. Contact Navien for more information.
Summary of Contents for NCB-190/060H
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