Lennox OLT-1X User Manual
User manual
Control
OLT-1X
Providing indoor climate comfort
MUL30E-0303 09-2006
CONTENTS
PAGE
TERMINAL-THERMOSTAT INSTALLATION AND UNIT CONFIGURATION
USER INTERFACE DESCRIPTION
SELECTING UNIT OPERATING MODE AND SET-POINT
PROGRAMMING ADJUSTMENT
ALARM CODES
UNIT PROTECTION DEVICES
1
2
3-4
5
6
6
Your new LENNOX Thermostat has been designed to provide accurate control and display of room temperature. In
addition, it will also display all relevant information pertaining to your system.
The clearly marked buttons and informative display make it extremely easy to understand and simple to use.
Please take a few moments to read the brief instructions and familiarise yourself with the various functions in order to obtain
maximum benefit from this truly unique electronic control.
This electronic control is organised into two integrated systems: a terminal, installed in the room, and a power board for managing
the actuators in the electrical panel. The terminal is connected to the power board using a four-lead cable, thus greatly simplifying
installation, with shield cable (supplied with the unit)
IMPORTANT
Prior of making the electrical connections, set the switch for heat pump unit or for cooling
only unit.
.
NOT USED FOR CASSETTE UNITS. (See documentation for the unit)
COOLING ONLY
This unit is valid for operating as a cold only or heat pump
application. The unit should be configured prior to making the
electrical connections, by setting the configuration switch as
follows:
J_MODE
P.C.B.
(factory setting)
J_MODE
HEAT PUMP
J_MODE
TERMINAL-THERMOSTAT INSTALLATION
For correct installation the following warnings must be heeded:
Always disconnect the power supply before performing any operations on the board during assembly, maintenance or
replacement.
The terminal should be fastened to the wall vertically, allowing for air to circulate through the instrument's vent-holes, in order
to detect the correct ambient temperature
Avoid places where the measurement of the ambient temperature by the internal sensor may be altered, such as outside walls,
near doors leading outside, in direct sunlight, etc.
INSTALLATION GUIDE FOR CONTROL CABLE (TO AVOID INTERFERENCES):
Use the screened 15 m cable supplied with terminal (3 wires + screen).
Wire the cable separated from electrical power wiring by a physical distance of 500 mm.
Wire the cable separated from halogen lamps/fluorescent tube lighting... by a physical distance of 500 mm.
Wire the cable separated from radio frequency sources such as radio transmitter... at least 500 mm.
NEVER WIND THE REMAINING CABLE AROUND, CUT THE CABLE BY THE TERMINAL END.
TERMINAL INSTALLATION
The installation procedure is as following:
1º To detach the front panel of the terminal from the rear shell,
insert a flat-head screwdriver in the slot in the centre of the bottom
of the box and release the locking flap.
2º Raise the front panel using a hinge movement, using the
upper edge of the instrument as the pivot and raising the lower
edge.
3º To fasten the rear part of the box to the wall, use the mounting
holes on the shell.
4º Connect the cables to the
terminals on the electrical box, as
indicated in electrical diagram.
AUTO
KEY LOCK
AUTODRY COOL
COOL
MON TUE WED THU FRI SAT SUN
TEMP.
HEAT
TEMP.
ROOM
TIMER ACTIVE SET TIMER SET CLOCK
TEMP.
SLEEP MODE
FAN
SWING ON TIMER OFF TIMER
CLOCK
DAY
HOLD
SLEEP
SWING
HEATFAN
SET TEMP
HOUR
Cable supplied with
the unit Maximum
ON / OFF
length allowed is
15m
MINUTE
1
F
F
O
/
N
O
2
Sub-base
FF
N / O
O
Terminal-Thermostat
UNIT
Power board
5º Finally, close the instrument, moving the front panel onto the rear shell with a hinge movement, in the opposite way as used
for opening. First the long side of the front panel near the display is snapped onto the rear shell, then the opposite side, being
careful that the terminal pins slide into their corresponding female terminals.
1
USER INTERFACE DESCRIPTION
Key Lock Display
Display indicates when key
lock function is activated.
Current Time
Display
Display the current
time
Start / Stop
Time Display
Display the start and
stop time
programmed.
Indicates that a
programming is
setting
Fan Speed Display
Displays the fan speed
setting.
(Auto/High/Medium/Low)
Alarm
indicator
KEY LOCK
MON TUE WED THU FRI SAT SUN
AUTO
SET TIMERTIMER ACTIVE
SET CLOCK
Operation Mode
Display
Displays the current
mode of operation.
SLEEP
SWING
FANHEAT
COOLAUTODRY
ROOM
TEMP.
ON / OFF
Sleep Display
Display the sleep / energy
saving status.
Swing Display
Display the air swing status,
(if incorporated on the unit)
°C or °F Display
Display the temperature
in °C or °F.
Set Temperature
or Room
Temperature Display
Display the set or
room temperature.
On/Off Status Lamp Display
Indicates we are setting the clock
Sleep button
Press SLEEP button to
activate the sleep or energy
saving mode.
Swing button
Press SWING button to
activate the air sweep
function.
Hold button
To resume the timer
setting after the timer
has been placed on
hold
Clock
To adjust the actual
real time
Day button
When the control is in set
clock or set timer mode,
pressing the DAY button will
change the set day.
Fan button
Press FAN button to
select Auto, High,
Medium or Low fan
SLEEP
SWING
HOLD
CLOCK
FAN
ON TIMER
DAY
MODE
OFF TIMER
speed.
SET TEMP
MINUTEHOUR
ON TIMER/OFF TIMER button
Used to adjust an ON/OFF TIMER to the
unit
Mode button
Press MODE button to
select operation mode from Cool, Heat,
Auto, Dry and Fan.
Temperature button
Pressing them the display
shows the set point or the
room temperature, and with
them we can select the
desired temperature (setpoint)
Minute button
When the control is in set clock
or set timer mode, pressing the
MINUTE button will change the
set minute.
Hour button
When the control is in set clock
or set timer mode, pressing the
HOUR button will change the set
hour.
2
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