Outside Air Sensor Wiring; Remote Air Temperature Sensor Wiring - Smart temp SMT?770 Installer Manual

Outside Air Sensor Wiring
Set "TT= OA" in the advanced installer menu.
The SMT‐770 can display the outside air temperature if
desired. Some advanced control functions such as high
and low balance points rely on this sensor to be fitted
for correct operation. Using a single pair of wires
connect the "TT" terminals in the SMT‐770 to the two terminals in the outside air
temperature sensor. (See figure 1). If the outside air sensor fails two dashes will be
shown on the LCD where the outside air temperature would normally be displayed to
alert you of the problem.
Remote Air Temperature Sensor Wiring.
Set "TT= RS" in the advanced installer menu. (Default)
When you wish to measure the temperature from a
location distant from the SMT‐770, simply connect a
remote temperature sensor to the "TT" terminals in
the SMT‐770. This will automatically disable the sensor fitted to the SMT‐770 and use
the remote temperature sensor(s) to control the room temperature (See figure 1
above). Should you wish, you can easily switch the remote temperature sensor on and
off thereby switching temperature sensing locations between the remote temperature
sensor and the SMT‐770 temperature sensor when required. Simply fit an inline switch
in the sensor wiring or order Smart Temp part number RS‐01S sensor. (See Figure 2.)
10 | P a g e
Figure 1
Figure 2