Lennox CS User Manual

©2014 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Adjust Temperature - Quick Reference
See figure 1 to adjust the heating and cooling setpoints. If
the setpoints are not displayed, press any button.
General
The Comfort Sensor (CS) and Comfort Sensor-Zoning
(CSZ) are temperature sensors which will communicate
with the L Connection network. In addition, the CSZ is used
as a zone controller. Both CS and CSZ are available with
humidity and CO sensing options.
2
Features:
Adjustable temperature setpoints
Resume program operation
Change the occupancy status
The CSZ will communicate on the ZoneBus to a Zone Link
control. The Zone Link will control rooftop unit heating,
cooling, and ventilation for all of the zones on the ZoneBus.
Display
The following readings will be displayed on start-up.
Zone temperature
Unit status (if unit is operating)
Occupied (if unit is in occupied mode)
To display additional information, M1/M2 electronic
configure to order (ECTO) or M3 parameter settings may
be adjusted. See the installation instructions provided with
each sensor.
Refer to the following steps and the appropriate number in
figure 2 for a description of each readout.
USER'S GUIDE
Comfort Sensor (CS) and
Comfort Sensor Zoning
(CSZ)
CONTROLS
505218M
7/2014
Supersedes 11/2010
Heating Setpoint
(adjustable when flashing)
Cooling Setpoint (adjust­
able when flashing)
Note - CS/CSZ may be set to prevent adjustment. The setpoint
range may also be limited. Check with the building manager or
maintenance personnel if setpoints won't change.
Figure 1. Change Setpoints
1. Cooling Setpoint or Damper Position. When the ECTO
or M3 Parameter is set to display the damper position,
any button may be pushed to display the setpoints.
Damper position is available for use with CSZ sensors
only.
2. Heating Setpoint or Relative Humidity. When the
ECTO or Parameter is set to display the relative
humidity, any button may be pushed to display the
setpoints. CS/CSZ must be equipped with RH option
to display RH.
3. Resume Program. Displayed when override mode is
returning to a scheduled program.
4. Override Mode. Displayed when a scheduled program
has been overridden. Also referred to as After Hours
Override.
5. Zone temperature.
6. Operation Status. Either HEAT or COOL will be
displayed when the zone is operating in heating or
cooling mode. The appropriate readout will blink if the
zone is requesting either heating or cooling and the
zone is not yet being serviced.
Litho U.S.A.
Press to
increase
the set­
point.
Press to
lower the
setpoint
Press to
heat or cool
after hours.
Press to change
to other setpoint.