Lennox A111C Manuale utente
CONTROLS
A111C/A112H
English/03-2004
USER MANUAL
1
TABLE OF CONTENTS
PAGE
2
3
4
5
6
7-8-9
10-11-12
13
14
15
16
17
CONTENTS
GENERAL DESCRIPTION
TERMINAL-THERMOSTAT INSTALLATION
USER INTERFACE DESCRIPTION
SELECTING UNIT OPERATING MODE AND SET-POINT
SELECTING THE TEMPERATURE SET-POINT CATEGOR
CLOCK AND TIME BANDS (AS AN OPTION)
PARAMETERS, STATUS AND READINGS (PROGRAMMING)
DEFROST MANAGEMENT
ALARM CODES
REMOTE SENSORS (AS AN OPTION)
THERMOSTATIC FREECOOLING (OPTION).
STANDARD GUIDELINES TO LENNOX EQUIPMENT
2
GENERAL DESCRIPTION
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: Freecooling)
(INTERNAL FACTOR CODES)
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 a remote sensor is requested as an option, the terminal-thermostat can be installed in a different place from
the room to be conditioned
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 uery or re uest for a replacement of the control panel must be accompanied by this identification
code.
our 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.
3
TERMINAL-THERMOSTAT INSTALLATION
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 (If 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, 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, 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.
4ºConnect the cables to the terminals on the rear shell of the box,
as indicated in, and in electrical diagram. Sub-base
Sub-base
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
4
USER INTERFACE DESCRIPTION
FUNCTIONS OF THE BUTTONS
Side buttons
aut
set
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:
- If both button are pressed together for one second, the display will show up the set point in place of the room
temperature.
- If both button are pressed together for more than five seconds, the display will show up the software version.
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 AFTER THE UNIT
POWER IS SWITCHED ON
Time-band indication
Set point display
Mode: "absence","comfort", "night"
Temperature probe
measurement
Indicates set point display
Heating ON
Unit OFF
Indicates operating mode / clock / User parameters
Fan operation indicator
Cooling ON
Thermometer associated to
temperature measurement
Fan operating mode
Display
1
MTWT FrSS
Day of week
clock
set
mode
fan
hold
resume
aut
set
1
MTWT FrSS
and buttons
AND BUTTONS
5
SELECTING UNIT OPERATING MODE AND SET-POINT TEMPERATURE
clock
set
mode
fan
hold
resume
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 CONSTANTL 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)
The operating mode is always indicated on the display.
Pressing the mode button repeatedly you can change the unit operating mode:
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 switches the unit off, the symbol appears on the display .
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 by 0.5ºC.
The button allows the decrease of the current set-point by 0.5ºC.
6
SELECTING THE TEMPERATURE SET POINT CATEGOR
D) SELECTING THE TEMPERATURE SET POINT CATEGORY
The default set-point values for the various categories are:
After COOL, HEAT or AUTO operating mode has been selected, pressing set button selects the set point category.
SET HEAT
BRIEF
COMFORT
NIGHT
SET COOL
CATEGOR
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.
How to change the desired temperature (set-point) for the different categories?
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 and
buttons assign the value between 0ºC to 10ºC for each category, which means the degrees increased or decreased
from the comfort category set point .
7
CLOCK AND TIME BANDS (AS AN OPTION)
Proceed as follow to program the time bands:
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
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)
Press clock
to accept
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.
This programmable operation is optional, and must be specified at the time of order.
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
clock
set
mode
fan
hold
resume
Mo Tu We Th Fr Sa Su
Use the table below to design your own programming schedule:
Select actual hour and minutes
with and buttons
The days are scrolled
using and buttons
8
CLOCK AND TIME BANDS PROGRAMMING
clock
set
mode
fan
hold
resume
* If you press the RESUME button, the changed will be not saved.
To exit programming
mode and accept the
modifications to the
parameters. press the
clock button.
PROGRAMMING PROCESS
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)
The display shows
clock
set
mode
fan
hold
resume
Other time bands for the
same day are scrolled by
pressing clock.
ou have already programmed the 6
time band for the current day.
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
and buttons,
and press clock to accept
Use and buttons to scroll to the another days, which
will flash in turn, thus extending the same program to the
selected days.
Confirming the
days using 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 oclock is indicated as
follows:
Stops the programming for that
day and, let you start programming
for another day.
Set the program start day with
the and buttons, and
press clock to accept.
1
3
4
2
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 and
buttons; while flashing, press
clock to accept.
Pressing
and buttons
Pressing
and buttons
9
CLOCK AND TIME BANDS PROGRAMMING
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 and buttons, and will remain for three hours. Press
resume button to return to time band operation before the three hours elapse.
A) Change the desired set-point of the current time-band for three hours.
HRS
The set-point will remain, until
resume button is pressed to return
to time band operation.
Press hold.
set
B) Change the desired set-point for an unlimited period
Change set-point
using the front buttons.
set
After three hours, the controller returns to the programmed settings
clock
set
mode
fan
hold
resume
set
Mo
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