Lennox CLIMATIC 10 A122C-A123H User manual

Providing indoor climate comfort
CLIMATIC™ 10 (A122C-A123H)
MUL27E-0701 09-2006
User manual
Control

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PAGE
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TABLE OF CONTENTS
CONTENTS
 GENERAL DESCRIPTION
 TERMINAL-THERMOSTAT INSTALLATION
 SER INTERFACE DESCRIPTION
 SELECTING NIT OPERATING MODE AND SET-POINT
 SELECTING THE TEMPERAT RE SET-POINT CATEGORY
 CLOCK AND TIME BANDS (AS AN OPTION)
 PARAMETERS, STAT S AND READINGS (PROGRAMMING)
 DEFROST MANAGEMENT
 POWER BOARD OF THE SYSTEM
 ALARM CODES
 REMOTE SENSORS (AS AN OPTION)
 THERMOSTATIC FREE COOLING (AS AN OPTION)
 STANDARD G IDELINES TO LENNOX EQ IPMENT

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 NIT
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 reques for a replacemen of he con rol panel mus be accompanied by his iden ifica ion
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 connec ion o he power board mus be kep separa e from o her cables,
using an individual cable channel; and use shielded cables, wi h a cross-sec ion 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 NIT
Two-lead shielded cable
with a cross-section of 1mm.
2
When making he connec ion o he power board special
a en ion mus be paid o he polari y; he T+ erminal mus
be connec ed o he T+ erminal on he power board; similarly
for he T- erminal (in case he cables are connec ed in he
opposi e order he ins rumen will no be damaged).
Terminal ins alla ion
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
SER INTERFACE DESCRIPTION
FUNCTIONS OF THE BUTTONS
Side buttons Front buttons
aut
set
FRONT B TTONS
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 B TTONS
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
NIT IS ELECTRICALLY S PPLIED.
Time-band indication
Probe measurement or set point
Set point category:
"absence", "comfort", "night"
Temperature probe
measurement
Indicates set point display
Heating ON
nit OFF
Indicates operating mode / clock / ser parameters
Fan operating
Cooling ON
Thermometer associated to
temperature measurement
Fan operating mode

5
SELECTING NIT OPERATING MODE AND SET-POINT TEMPERAT RE
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 A TO.
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 opera ing mode selec ed is ac ive 5 seconds from se ing,
when he respec ive sign s ops flashing.
A ) SELECTING THE UNIT'S OPERATING MODE
C ) SELECTING THE FAN OPERATING MODE
B ) SELECTING DESIRED ROOM TEMPERATURE (SET-POINT)

6
SET HEAT
BRIEF
COMFORT
NIGHT
SET COOL
CATEGORY
Increase 4ºC the set point selected
on comfort category
Desired room temperature
(set-point 23ºC)
Desired room temperature
(set-point 23ºC)
Decrease 4ºC the set point selected
on comfort category
Increase 2ºC the set point selected
on comfort category
Decrease 2ºC the set point selected
on comfort category
There are 3 possible set-point categories available
1- Comfort set-point (indicated by the symbol ):
It is the reference room desired temperature (set-point), used for the rest of the categories.
2-Brief absence set-point (indicated by the symbol ):
Typically used when the room is not occupied for a short period of time.
3- Night-time set-point (indicated by the symbol ) :
The room is occupied yet a lower level of comfort is required.
SELECTING THE TEMPERAT RE SET POINT CATEGORY
How o change he desired empera ure (se -poin ) for he differen ca egories?
Pressing the SET button in manual operating mode selects comfort category . During the time the symbol
is flashing, pressing the front buttons and changes the currently set-point used by the control. This is the
set-point reference for the rest of the categories.
Following the same steps we can select the categories: brief absence , or night , and with the front buttons
and assign the value between 0ºC to 10ºC for each category, which means the degrees increased or
decreased from the comfort category set point.
D) SELECTING THE TEMPERATURE SET POINT CATEGORY
The default set-point values for the various categories are:
After COOL, HEAT or A TO, operating mode has been selected, pressing set button select the set point category.

7
CLOCK AND TIME BANDS (AS AN OPTION)
This Terminal-Thermostat with clock function, is a programmable terminal (programming the time bands).
With this terminal set-point desired can be set for 24 hours a day, seven days a week.
time-bands terminal, is supplied as an option, therefore, it must be specifically requested if needed.
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
Proceed as follow to program the time bands:
Mo Tu We Th Fr S a Su
se the table below, to design your own programming schedule.
There are 6 possible time bands, indicated respectively by the letters t1-t2-t3-t4-t5-t6. The bands may be at different
times for each day of the week and at different set-points, yet they must be chosen from the three categories
previously programmed.
EXAMPLE:
The table below shows an example of time bands clock for a week:
1º Set the actual time, to make once, when terminal is installed for the first time.
Press
clock
The days are scrolled
using the front buttons
Press clock
to accept
Mo
t1
t2
t3
t4
t5
t6
Mo
(Monday)
8:00
14:00
16:00
18:00
20:00
22:00
Tu
(Tuesday)
8:00
14:00
16:00
18:00
20:00
22:00
We
(Wednesday)
Th
(Thursday)
Fr
(Friday)
Sa
(Saturday)
Su
(Sunday)
---
---
---
---
8:00 8:00
22:00 22:00
---
---
---
---
8:00
14:00
16:00
18:00
20:00
22:00
8:00
14:00
16:00
18:00
20:00
22:00
8:00
14:00
16:00
18:00
20:00
22:00
t1
t2
t3
t4
t5
t6
Mo
(Monday)
Tu
(Tuesday)
We
(Wednesday)
Th
(Thursday)
Fr
(Friday)
Sa
(Saturday)
Su
(Sunday)
Select actual hour and
minutes with the front
buttons
Press clock
to accept

8
CLOCK AND TIME BANDS PROGRAMMING
clock
set
mode
fan
hold
resume
The display shows
clock
set
mode
fan
hold
resume
To set a program, press clock for 5
seconds, t1 will show on the display
Continue to
program the
remaining days.
Set the start hour and minutes
for the first band with the front
buttons, and press clock to
accept.
se front buttons to scroll to another day, which will flash in
turn, thus extending the same program to the selected days.
Confirming the
days using the
clock button.
To exit programming
mode and accept the
modifications to the
parameters press the
clock button.
The time interval identified by time
current band is shown on the display
using the clock symbol, divided into
1-hour sections. Thus, the time band
from 12 to 7 oclock is indicated as
follows
Pressing front
buttons
Stops the programming for that
day, and let you start programming
for another day.
Set the program start day with
the front buttons, and press
clock to accept.
1
3
4
2
PROGRAMMING PROCESS
Mo Tu We Th Fr Sa Su
Mo Tu We Th Fr Sa Su
Mo Tu We Th Fr Sa Su
Set the set point category for
the band with the front
buttons; while flashing press
clock to accept.
Pressing front
buttons
* If you press he RESUME bu on, he changes will no be saved.
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
set
Mo
Mo
Mo
Mo
Mo
Mo
Mo (Monday)
Tu (Tuesday)
We (Wednesday)
Th (Thursday)
Fr (Friday)
Sa (Saturday)
Su (Sunday)
Other time bands for the
same day are scrolled by
pressing clock.
Already you have programmed the 6
time band for one day.

9
CLOCK AND TIME BANDS PROGRAMMING
set
After three hours, the controller returns to the programmed settings.
clock
set
mode
fan
hold
resume
set
Mo
After all time bands have been programmed and unit it is working on any of them, there are two ways to change
the desired set-point for the time-band currently in use:
Change set-point
using the front buttons
Shows the time band during the set point will be
set.
The desired set-point can be changed, using the front buttons, and will maintain the change for three hours.
Press resume button to return to time band operation before the three hours elapse.
A) Change he desired se -poin of he curren ime-band during hree hours.
HRS
The set-point will remain, until
resume button is pressed to return
to time band operation.
Press hold.
set
B) Change he desired se -poin for an unlimi ed period.
Change set-point
using the front buttons.