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Lennox SCA 010 - Page 52

Lennox SCA 010
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IOM / Rooftop Smart and Linéa Range - Page 51
USING THE LXUSING THE LX
USING THE LXUSING THE LX
USING THE LX
-IDS REMO-IDS REMO
-IDS REMO-IDS REMO
-IDS REMO
TE CONTROLTE CONTROL
TE CONTROLTE CONTROL
TE CONTROL
INSTALLATION INSTRUCTIONS
The Indoor sensor is designed to sense the air temperature
at a remote location and send this Information by digital
communications to the thermostat. Any number of sensors
up to six can be connected together to provide temperature
averaging. The sensor can also be modified for use with a
duct sensor, or to connect an existing L2S-RS network to a
new thermostat.
SINGLE SENSOR INSTALLATION
1. Install the thermostat according to the instruction
manual supplied with it. Check that the thermostat is
operating (Display shows the correct temperature.)
CAUTION: Remove the thermostat from the subbase
while wiring the sensor to avoid damage from live wires.
This is important.
2. Install three-wire cable from the thermostat to the
remote sensor location. Maximum distance = 90 m.
3. Open the sensor case by depressing the button on the
bottom edge of the case until the latch releases.
Remove the cover by pulling it out and up at the bottom.
4. Remove the board from the subbase by pulling back
the latch that holds it at the center bottom.
5. Use the subbase as a template to mark the mounting
hole locations on the wall. Drill size for the wall anchors
is 1/4 inch. Mount the subbase over the wires coming
out of the wall using the two screws and anchors
provided. The angled corner on the subbase should
be in the bottom right.
6. Snap the board back into the subbase. Check to be
sure that the latch holds the board properly. Check that
the thermostat(sensor element) is positioned under the
holes in the cover but not touching the cover or
subbase.
7. Strip 35 mm of insulation from the three wires et the
Remote Sensor. Install the wires in the terminals
labelled RS2, RS+V and RSI. Push any extra wire back
into the wall cavity. Seal the hole in the wall around the
cable to eliminate any draft that might affect the sensor.
(Refer to Figure 62)
8. Note the wire colour going to each terminal. The order
of the wires on the thermostat is not the same as the
sensor.
9. Connect the wires on the thermostat subbase to the
terminals labelled RS2, RSI and RS+V. Make sure that
each terminal on the sensor is wired to the terminal
with the same name on the thermostat.
10. Mount the thermostat on the subbase and check to be
sure that it is showing the temperature.
11. Re-install the cover on the remote sensor by hooking it
on the top and snapping the bottom into place.
USING MULTIPLE SENSORS FOT TEM-
PERATURE AVERAGING
Any number from two to six sensors may be connected
together to provide temperature averaging in a large area
or several zones being controlled by the same system.
Maximum distance between any 2 sensors is 300 ft. (90m).
1. Wire the first sensor using the single sensor instruc-
tions.
2. CAUTION : Make sure that there is no power to the
sensors by removing the thermostat from the subbase.
3. Connect wires to each additional sensor in the following
manner. An outdoor sensor can also be connected in
any location in the chain (refer to figure 63)
4. Replace the thermostat on the subbase. Check for
proper operation of each sensor by connecting a jumper
between terminals 1 and 2. This shorts out the
thermistor. The displayed temperature will go up several
degrees if the sensor is properly installed. Repeat for
each sensor.
RETROFIT TO MULTIPLE L2S-RS
SENSORS
If an older thermostat with multiple sensors is replaced, the
existing L2S-RS sensor may still be used. An LX-IDS sensor
must be added between them and the new thermostat.
1. Install the new sensor using the Single Sensor Instruc-
tions.
2. Clip the thermistor from the new sensor with wire cut-
ters as shown in figure 64.
3. Connect the two-wire shielded cable from the L2S-RS
sensors to terminals 1 and 2 of the new sensor. Connect
the shield of the cable to terminal 2 also.
THERMOSTAT SENSOR SENSOR SENSOR OTHER
1 2 3 SENSOR
RS+V –––––––– RS+V –––– RS+V ––– RS+V ––––––
RS2 –––––––––– RS2 ––––– RS2 ––––– RS2 –––––––
RSI ––––––––––– RS1 RS1 RS1
AVG AVG AVG

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