Lennox CLIMATIC 10 User Manual

Providing indoor climate comfort

CLIMATIC™ 10 (A122C-A123H)

MUL27E-0701 09-2006

User manual

Control

1

PAGE

2

3

4

5

6

7-8-9

10-11

12

12

13-16

17

17

18

TABLE OF CONTENTS

CONTENTS

 GENERAL DESCRIPTION

 TERMINAL-THERMOSTAT INSTALLATION

 USER INTERFACE DESCRIPTION

 SELECTING UNIT OPERATING MODE AND SET-POINT

 SELECTING THE TEMPERATURE SET-POINT CATEGORY

 CLOCK AND TIME BANDS (AS AN OPTION)

 PARAMETERS, STATUS AND READINGS (PROGRAMMING)

 DEFROST MANAGEMENT

 POWER BOARD OF THE SYSTEM

 ALARM CODES

 REMOTE SENSORS (AS AN OPTION)



THERMOSTATIC FREE COOLING (AS AN OPTION)

 STANDARD GUIDELINES TO LENNOX EQUIPMENT

2

IMPORTANT

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 two-lead
cable, thus greatly simplifying installation.

Terminal-Thermostat

Installed in the room (*)

Electrical panel in the unit

Power board

AIR CONDITIONING UNIT

Two-lead shielded cable

(*)If remote sensor is requested as an option, the terminal-thermostat can be installed in a different place from the
room to be conditioned.

GENERAL DESCRIPTION

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 familiarize yourself with the various functions in order
to obtain maximum benefit from this truly unique electronic control.

Since this type of control panel is factory-configured for each application, an identification code located on the
control panel of the terminal itself has been given to each panel.

Any query or request for a replacement of the control panel must be accompanied by this identification
code.

IDENTIFICATION CODE FOR THE TERMINAL-THERMOSTAT

A111

Type of control

No. of speeds of the indoor fan

No. of cooling stages

No. of heating stages

Application
C: Cooling only
H: Heat pump

Configuration Version

BASIC TERMINAL NAME ACCESSORIES

P: Programmable

(Programming schedule

SP: Free cooling)

(INTERNAL FACTORY CODES)

3

TERMINAL-THERMOSTAT INSTALLATION

Maximum length allowed is 150m

T+

T-

To PCB in electrical panel

of air conditioning unit

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.

The cables for connection to the power board must be kept separate from other cables,
using an individual cable channel; and use shielded cables, with a cross-section of 1mm.

2

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.

Terminal-Thermostat

Installed in the room

Electrical panel in the unit

Power board

AIR CONDITIONING UNIT

Two-lead shielded cable

with a cross-section of 1mm.

2

When making the connection to the power board special
attention must be paid to the polarity; the T+ terminal must
be connected to the T+ terminal on the power board; similarly
for the T- terminal (in case the cables are connected in the
opposite order the instrument will not be damaged).

Terminal installation

The installation procedure is as following:
1º To detach the front panel of the terminal from the rear shell, place 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, place the hole in the centre of the box over the cables for the control
of the instrument which come out of the wall. The placement of the mounting holes has been designed to allow
the instrument to be fixed onto a box conforming to standards CEI.431 - IEC 670 (100x600). If this is not available,
use the mounting holes on the shell as a guide for drilling holes into the wall and then use the screw and plug
kit supplied.

4º Connect the cables to the terminals on the rear shell of the box,
as indicated in, and in electrical diagram.

Sub-base

Sub-base

4

Display

1

MTWT FrSS

Day of week we are
programming

clock

set

mode

fan

hold

resume

aut

set

1

MTWT FrSS

USER INTERFACE DESCRIPTION

FUNCTIONS OF THE BUTTONS

Side buttons Front buttons

aut

set

FRONT BUTTONS
These are placed on the front panel of the instrument. These allow the immediate setting of the desired temperature
(set-point), and with them the parameters could be modified.

While unit is ON:

- Pressing simultaneously the front buttons for one second, the display will show up the set point where room
temperature was showed before.

- Pressing simultaneously the front buttons, the display will show up the software version for five seconds.

SIDE BUTTONS
These buttons allow access to all the other functions of the control.

Indicates change value
of parameters

THE CONTROL IS ACTIVE 5 SECONDS FROM THE TIME

UNIT IS ELECTRICALLY SUPPLIED.

Time-band indication

Probe measurement or set point

Set point category:
"absence", "comfort", "night"

Temperature probe
measurement

Indicates set point display

Heating ON

Unit OFF

Indicates operating mode / clock / User parameters

Fan operating

Cooling ON

Thermometer associated to
temperature measurement

Fan operating mode

5

SELECTING UNIT OPERATING MODE AND SET-POINT TEMPERATURE

aut

set

Fan operating mode

1

set

If unit is working, the or buttons allow to select the desired room temperature (set-point).
The button allows the increase of the current set-point 0.5ºC.
The button allows the decrease of the current set-point 0.5ºC.

clock

set

mode

fan

hold

resume

The operating mode is always indicated on the display.
Pressing the mode button repeatedly the possible operating modes for the model of machine selected
are scrolled through:

COOL: The unit is working on cooling mode, when compressor is working, the symbol will appear
on the display.
HEAT: The unit is working on heating mode, when compressor or electrical heater are working, the
symbol will appear on the display.
AUTO: The system automatically switches from cooling to heating mode, depending on the position of

the ambient temperature in respect to the set-point.

FAN: The unit will work on fan mode, when fan is working, the symbol will appear
OFF: The thermostat does not perform the regulation, the symbol appear on the display

To be able to select a fan operating mode, cool, heat or auto unit's operating mode must be selected
Pressing FAN side button scrolls through the following modes: FAN CONSTANTLY ON, or AUTO.

FAN CONSTANTLY ON:

Fan is continuous ON, the symbol will appear.

AUTO:

Fan on and off together with the compressor, the symbol will appear.

1

aut

The operating mode selected is active 5 seconds from setting,

when the respective sign stops flashing.

A ) SELECTING THE UNIT'S OPERATING MODE

C ) SELECTING THE FAN OPERATING MODE

B ) SELECTING DESIRED ROOM TEMPERATURE (SET-POINT)