Navien NHB Series, Installation & Operation Manual

Page: 118 / 135

118 Appendixes
12.4 Outdoor Temperature Sensor
Outdoor Temperature Sensor Installation
1. Pull out the sensor body from the cap.
2. Attach the body to the wall using the screws/anchors provided
with the device.
3. Run the wires into the device body through the grommet
opening.
4. Connect the wires to the terminal block.
5. Attach the cap to the body.
Navien Outdoor Temperature Sensor Kit
Outdoor Temperature Sensor Installation Guidelines
Ɣ
Avoid areas with temperature fluctuations by direct sunlight,
and where the temperature may not be representative of true
outdoor temperature.
Ɣ Best location to install the temperature sensor is on a North or
Northeast side of a structure under eaves where the sensor is
shielded from direct sunlight.
Ɣ
Avoid placing sensor in close proximity of heat sources that may
affect correct temperature sensing. (fans, exhausts, vents, lights)
Ɣ
Avoid installing the sensor in areas where the sensor is subjected
to excessive moisture.
Ɣ
Use 18 gauge wiring (thermostat wiring) with no splices. (except
at the unit harness connection with blue leader wire.)
Ɣ
Caution should be taken to avoid potential electromagnetic
interference (EMI) by routing separately from potential sources
such as line voltage wiring. When necessary, shielded cable may
be used.
Ɣ
Make sure wiring connections are secure before closing the cap.
Ɣ
The sensor is a water resistant device.
Ɣ
Any damage to the device may require the replacement of the
entire component.