Lennox SCA 010 Installation, Operation & Maintenance Manual page 59

USING THE T7300 THERMOS USING THE T7300 THERMOS USING THE T7300 THERMOST T T T T A A A A A T T T T T USING THE T7300 THERMOS USING THE T7300 THERMOS
1. Loosen the terminal screws on the subbase or wallplate
and connect the system wires. See figure 68.
IMPORTANT
Use 18-gauge, solid-conductor color-coded thermostat cable
for proper wiring. If using 18- gauge stranded wire, no more
than ten wires can be used. Do not use larger than 18-gauge
wire.
2. Securely tighten each terminal screw.
3. Push excess wire back into the hole.
4. Plug the hole with nonflammable insulation to prevent
drafts from affecting the thermostat.
PROPER WIRING TECHNIQUE
For wrap
around
insertion strip
11 mm
Mounting Thermostat on Subbase or Wallplate
The thermostat mounts on the subbase or wallplate after
they are installed.
1. Engage the tabs at the top of the thermostat and
subbase or wallplate. See figure 69.
2. Press the lower edge of the case to latch.
NOTE :
To remove the thermostat from the wall, first pull out at the
bottom of the thermostat ; then remove the top.
Engage tabs at top of
thermostat and
subbase or wallplate
Press lower edge of
case to latch
Page 58 - IOM / Rooftop Smart and Linéa™ Range
For straight insertion strip 8
mm.
Figure 68
Figure 69
SETTINGS
Using Thermostat Keys
The thermostat keys are used to :
- set current time and day,
- program times and setpoints for heating and cooling,
- override the program temperatures,
- display present setting,
- set system and fan operation,
- configure Installer Setup,
- check Installer System Test.
See figure 70 for key information (next page).
Setting System and Fan (select models)
The system default setting is Heat. The fan default is set so
the fan operates continuously in Occupied periods,
Unoccupied period recovery times and with the heating and
cooling equipment in Unoccupied periods. Use the System
and Fan keys to change the settings. Fan and system
operation are configured in the Installer Setup options.
The system settings are :
Em Heat (T7300/Q7300 D) :
Emergency heat relay is on continuously. Thermostat
cycles highest stage of heat. Cooling system is off.
Compressor is de-energized.
Heat : Thermostat controls the heating.
Off : Both the heating and cooling are off.
Cool : Thermostat controls the cooling.
Auto : Thermostat automatically changes between
heating and cooling depending on the indoor
temperature.
The fan settings are :
On : Fan operates continuously in occupied period.
Auto : Equipment controls the fan in the Unoccupied
periods. The Intelligent Fan™ operation offers
three choices for the fan operation in Occupied
periods :
- fan turns on only when there is a call for
heating or cooling.
- fan operates continuously in Occupied
periods.
- fan is on continuously in Occupied periods
and Unoccupied period recovery times.
Setting Temperature
Refer to following table for the default temperature setpoints.
See Programming section for complete instructions on
changing the setpoints.
Control Occupied
Heating
Cooling 25,5°C
Unoccupied
20°C 13°C
32°C