Installer Manual A4100 Thermostat Ver 1.0
This document it not typically left with the user as it contains information on setting
values which, if not correctly set may damage the heating, cooling or air conditioning
system or seriously effect its performance or energy consumption.
Great effort has been taken to making the A4100 thermostat system intuitive, reliable
and easy to install. Using a common sense approach to the installation will ensure this
product is installed easily and to the customer’s satisfaction. Please read and
understand this instruction manual so that installation, testing and commissioning
process is undertaken in an efficient and effective manner.
This manual is to be used in conjunction with the supplied user manual.
Great care has been taken in the preparation of this manual. It is the responsibility of the
user to ensure this thermostat, or the equipment connected to it is operating to their
respective specifications and in a safe manner.
Installation
As with any air conditioning project undertaken, careful installation is the key to a
successful outcome. Time taken during this installation process will be rewarded by a
happy customer and fewer call
‐
backs.
The steps required to install the A4100 thermostat are
1. Read and understand this manual and the User manual.
2. Mount the A4100 back plate in a suitable location.
3. Set the 8 DIP switches to match the need of the project / user.
4. Wire the optional remote temperature sensor(s) or switches if required.
5. Power up the air conditioning system.
6. Set the installer software options (if required).
7. Program and set up the A4100 thermostat. (The User Manual will assist with this).
8. Test the heating, cooling and other functions
–
Commissioning.
For convenience the layout of this manual is in the same order as the steps listed above.
Mounting the wall controller
The A4100 can only be as accurate as the onboard temperature sensor, or its optional
remote temperature sensor(s) permit. It is therefore essential that the wall thermostat be
installed in a location that is typical of the ambient room temperature. Do not install the
thermostat in a draft, near a floor, behind doors
、
or on a non
‐
insulated external wall.
Also avoid placing the thermostat in areas where the air movement is limited, affected by
direct sunlight or other areas not
“
typical” of the temperature of the room.
Further, when mounting the A4100 be aware that drafts may travel down the inside of
cavity walls, (especially if mounted on external walls) and enter the back of the
thermostat or sensor enclosure through the cable entry holes in the wall. It is important
to fully seal these holes to prevent any drafts affecting the internally mounted
temperature sensor. It is recommended to mount the A4100 or remote sensors between
1.5 & 1.7 metres from the floor where possible.
Move the control wires through the large opening in the thermostat base plate then place
the thermostat base on the wall and using appropriate screws, firmly attach the
thermostat base to the wall. Seal any holes where cables enter the back of the
thermostat to prevent drafts entering through these holes affecting he sensor.
Setting the hardware switches
Switch Off
On
Sw1 – Fan Speeds
1 Speed Fan (2 heat / 2
Cool)
3 Speed Fan (1 heat / 1
Cool)
Sw2 – Equipment Type
Heat Cool
Heat Pump (O/B
terminals)
Sw3 – Stages
1 Stage
2 Stages
Energise in cool (O)
Energise in heat (B)
Sw4 – Reversing Valve
If Sw 2= ON – Heat Pump
Sw4 – Fan Mode
If Sw 2= OFF – Heat/cool
Fan Control by Heater
(HG)
Fan Control by T’stat
(HE)
Sw5 – Anti cycle timer
Off
4 Minutes
Sw6 – Operation
Manual Thermostat
Programmable
Thermostat
Sw7 – Minimum Run
2 minutes
6 Minutes
Commercial Program
Residential Program
Sw8 – Program Type
If Sw 6= ON – Programmable
Sw8 – Set points
If Sw 6= OFF – Manual
Single Set point
Two Set points
Typical drawings have been provided on of this manual that will assist with the selection
of the correct positions for these function switches.
Switch 1
–
Relay Assignment The A4100 is fitted with 5 relays capable of switching up
to 24VAC @ 1Amp. Switch 1 sets the function as either 3 fan speeds with 1 heat and 1
cool operation or single fan speed with 2 heat and 2 cool, in either HP (Heat pump or
reverse cycle) or HC (heat with add on cool) mode.
Switch 2
–
Equipment Type. Both heat with add on cool or heat pump types of systems
can be controlled by the A4100. Heat Cool System uses the
“
W” terminals only for
heating and the
“
Y” terminals only for cooling. Heat Pump systems use the
“
Y”
terminal(s) for BOTH heating and cooling. The
“
W1” terminal to control the reversing
valve which determines heating or cooling mode.
Switch 3
–
Equipment Stages. When it is necessary to control a single stage system
A/C system fitted with auxiliary heating elements, turn sw3 OFF thereby selecting single
stage mode. Heating elements are now called as stage 2 heat (NOT Stage 3 eat).
Switch 4
–
Reversing valve or Fan mode When the A4100 is set for Heat Pump mode
(Sw2 is on) then this switch sets the reversing valve logic (O/B). When the A4100 is set
for Heat Cool Mode (Sw2 is off) then this switch sets the mode for the Heater fan logic
(HG or HE mode).
Switch 5
–
Anti Cycle Timer To protect some A/C systems it is preferred that under no
circumstances should the compressor start within 4 minutes of it switching off. Note,
when power is first applied to the A4100 it
“
assumes” that the compressor has just
stopped and applies this anti cycle delay time before starting.
Switch 6
–
Thermostat Operation To suit the varying requirements of the user, the
A4100 can be set as a programmable thermostat using the time clock to automatically
control the building temperature to a programmed temperature profile, or to the very
simple to operate manual mode where the user turns the thermostat on or off, and
adjusts the temperature set point manually.
Switch 7
–
Minimum Run time. To conserve energy and protect the A/C system it is
recommended to limit the number of times the heating and or cooling system can run in
1 hour. This switch sets the minimum heating and cooling equipment to a minimum run
time of 2 or 6 minutes. Once the heating or cooling has started it must run for this
minimum set time. The LCD will flash the word
“
Heating” or
“
Cooling” when ever this
timer is in effect.
Switch 8
–
Thermostat Control Logic. This switch also has two functions based on the
position of switch 6. When the A4100 is set as a programmable thermostat switch 8
determines whether commercial program or residential program is selected. When
switch 6 has the A4100 used as on programmable thermostat, this switch sets single set
point mode (imitating a simple mechanical thermostat) or whether a separate heating
and cooling set point can be selected by the user. Two set point mode also permits the
user to select a separate day and night set point if required.
TT terminal Functions
The A4100 is fitted with a set of terminals marked
“
TT”. Detail on the functions that the
“
TT” terminals perform is provided below. See the advanced installer setting menu of
this manual for setting the function of this set of terminals. The wiring used in he
following examples are not polarity dependent and do not normally require screened
cable.
NOTE: The A4100 can use multiple sensors if required. Drawings showing these various
on figurations re shown on of this manual.
Outside Air Sensor wiring
Set
“
TT= OA” in the advanced installer menu.
The A4100 can display the outside air Temperature if
desired. Some advanced control functions such as high
and low balance points rely Figure 1 on this sensor to
be fitted for correct operation. Using a single pair of
wires connect the “TT” terminals in the A4100 to the two terminals in the outside air
temperature sensor. (See figure 1). If the outside air sensor fails two dashes will be
shown on the LCD where the outside air temperature would normally be displayed to
alert you of the problem.
Remote Air Temperature sensor wiring.
Set
“
TT= RS” in the advanced installer menu. When
you wish to measure the temperature from a location
distant from the wall controller, simply connect a remote
temperature sensor to the
“
TT” terminals in the
A4100. This will automatically disable the sensor fitted
to the wall controller and use the remote temperature
sensor(s) to control the room temperature (See figure 1 above). Should you wish, you
can easily switch the remote temperature sensor on and off thereby switching
temperature sensing locations between the remote temperature sensor and the A4100
temperature sensor when required.
Averaging Temperature sensors
Set
“
TT= AV” in the advanced installer menu.
The A4100 can average the sensor temperature equally between the remote
temperature sensor(s) and the one fitted to the A4100 if required. See figure 1 on the
previous for details on wiring the sensor. The A4100 will auto
‐
detect this sensor and
automatically average the two sensors values to control the room temperature.
Remote ON / OFF function
S
et “TT= OF” in the advanced installer menu.
The A4100 can be connected to an external dry contact,
when this contact is closed the A4100 will turn OFF. See
figure 3. When the A4100 has been switched OFF via
the “TT” terminals the word “OFF” will flash in the LCD
to indicate that this has been the shutdown method. The A4100 will return to the user
settings when this switch is open.
Using the
“
Occupancy Mode”
Set
“
TT= OC” in the advanced installer menu.
The A4100 can alternate between the user preferred set points and an installer pre
programmed set point when required. Simply wire a remote switch to the A4100
“
TT”
terminals, (see figure 3). When the switch is open the user settings will control the room
temperature, when the switch is closed the Installer
“
Oc” (Occupied Cooling value) &
“
Oh” (Occupied Heating value) settings will be used to control the room temperature.
Typical Drawings
The A4100 has the capacity to control a wide selection of heating, cooling and air
conditioning systems. Using the DIP switches and installer software options, the A4100
is capable of providing more than 96 different control methods from its 5 fitted relays.
Examples of only the most common types of control wiring have been provided below.
You may need to modify these drawings to specifically suit your individual needs.
Attaching the thermostat
Check that the position of the 8 DIP switches matches the requirements of the
equipment being controlled and the specific requirements of the user. Detailed
information on the 8 DIP switches can be found on this manual. Check the wiring
matches that of the equipment the A4100 is to control and that all wiring is tight and not
likely to short between adjacent wires. Equipment wiring information can be found of this
manual. If using the Modbus communication capability of the A4100, ensure the
“
A”,
“
B” &
“
C” data wires are in the correct position as an error here may affect the
communication of the entire network. Using masking tape or similar, block the hole in the
wall where the wiring enters the back of the thermostat to prevent drafts that may travel
down the inside of the wall cavity from affecting the accuracy of the internally fitted
temperature
Remove and discard the plastic tab on the internally fitted backup battery so that the
battery is now in circuit and operating.
Avoid twisting the case as this may stress the LCD and cause it to crack. Avoid running
wiring near the internally fitted sensor.
Take care not to damage or crush the temperature sensor between the two half’s of the
case when you close the Chameleon case. Check this sensor location.
A4100
Advanced Installer Settings
The A4100 is fitted with many advanced functions that can be fine tuned by the installer
to specifically match the needs of the project of the user.
Normally these functions will not need to be altered from the factory default position
however, there may be times when you wish to alter a setting or control capability so that
the A4100s performance will perfectly match a particular application.
While in the advanced installer menu, all A4100 equipment control functions will be
suspended. Normal equipment operation will continue when you have exited this menu
(after any anti cycle delays or safety delays have terminated).
A4100
Using the Installer Menu
FAN ON
Room
HOLD
CLOCK
SCREEN
SYSTEM
.
FAN
FRI
MED
AM
OFF
HOLD
CLOCK
SCREEN
SYSTEM
.
FAN
FRI
MED
AM
OFF
FAN ON
Room
DONE
To adjust a value in the Installer menu tap the UP or DOWN keys.
To exit the installer menu tap the
“
DONE” key or wait 60 seconds.
Entering the Installer Menu To enter the Installer menu, press and hold the PROG DAY
key for 30 seconds. After 6 seconds the LCD will show
“
88:15”
–
The factory default
Adjust this value to
“
88:21” (or your previously selected value) by using the up or down
key. Tap the DONE key to enter the menu.
If you have entered the correct PIN you will be given the first menu option, if you have
entered a incorrect PIN you will be exited from this menu. Default Installer Values are
shown in the examples below.
A4100
PN =21 Keyboard Lock PIN
This is the required PIN for future entry into the
Installer menu. Range 00 to 99 in 01 steps.
(Caution, if you change this value and forget your
new PIN, you may need to return the A4100 to
place of purchase for unlocking
‐
there may be a fee for this service)
DONE
LC=0 Keyboard Lock level
Programmable Mode (SW6=ON)
LC=00
‐
Key board Lock OFF. LC=01
‐
All keys are locked.
HL=35 (95F) Heating Limit (or High Limit)
The highest Heating value permitted to be set by the user. Adjustable between 0~35c
(32~95F).
CL =5 (41F) Cooling Limit (or Low Limit)
The lowest Cooling value permitted to be set by the user. Adjustable between 5~37c.
(41~98F).
CF=C Temperature display
Format Deg C or deg F display type. (effects all user and installer menu items)
C1 =0.0 Fitted Sensor Calibration
Calibration Offset for the internal sensor. Adjustable range +/
‐
5 deg C (+/
‐
9 F).
tC =12 Time Clock
Display 12 or 24 hour Clock Style.
tD =0 Temperature Display
TD=00
‐
The A4100 will display both the Room & Set Temperature. TD=01
‐
The
A4100 will display set temperature only.
AH=2 After Hours Override Timer
DAY / EVENING Mode
‐
Commercial Thermostat Mode (Sw6=on, Sw8=off) After hour
run time period
‐
Adjustable range 0 (off) to 12 hours. Setback (1, 2, 3 ,4) mode
–
Residential programmable Mode (Sw6=on, Sw8=on) Temporarily program override
period. Off= Override till next program change or 1
‐
12 hours (fixed time override).
SC=OFF Stop Cooling temperature
Start/stop mode Only. (Sw6=on, Sw8=off). Cooling temperature that will be maintained
when running the
“
STOP” program. (Night Setback) Adjustable between 5~37c.
(41~98F) + OFF.
SH= OFF Stop Heating temperature
Start/stop mode Only. (Sw6=on, Sw8=off). Heating temperature that will be maintained
when running the
“
STOP” program. (Night Setback) Adjustable between 5~37c.
(41~98F) + OFF. Db=1 Single Set Point Dead band. Dead band between heat and cool
set point when in single set point mode (sw8 off). Adjustable between 0 and 5 deg.
FO=0/2 Fan Options
‐
Advanced Fan Functions
This function is only enabled when the selected fan mode is Fan On.
“
FAN ON” will be
displayed in the LCD to confirm the mode. FO=0 (Default).The fan will run continuously
‐
, 24 hours a day 7 days a week.
FO=1 The fan will continue to run after the cooling stops to ensure the maximum fresh
air ventilation and to aid in cooling. The fan will stop after the heating stops. (This is done
to prevent cold drafts that may occur on cold days when A/C system is heating).
FO=2(Default in Start Stop Mode).Available only if in Programmable Mode (Sw6=on).
The Fan will Run continuously from program # 1 (or Start) Program to program #4 (or
Stop) program and then run in AUTO mode overnight to maintain the night time set
points.
FO=3
‐
Available only if in Programmable Mode (Sw6=on). This mode is the
combination of option 1 and option 2 given above.
FP=1 Fan Purge Time Period (Fan run on)
If fan mode is Auto Fan, the indoor fan will run for FP=XX minutes after heating or
cooling has stopped to extract any stored energy in the coils etc
–
(Necessary for
electric element heating). Adjustable between off to 5 minutes in 1 minute intervals.
Fn=A Function
‐
Available Equipment Modes
FN=A
‐
Select if controlling a Heating & Cooling system.
FN=C
‐
Select if controlling a Cooling only system. (disables heating menus)
FN=H
‐
Select if controlling a Heating only system. (disables cooling menus)
H3=Of W2 relay Function
Only operates in single fan speed HP mode. (Sw 1=off & Sw2=on).
H3=Of
‐
W2 relay is used as 2nd (or 3rd) stage Auxiliary heat.
H3=EH
‐
W2 relay is used to control an Emergency Heating system.
H3=AH
‐
W2 relay is used to control a Add On Heat system.
tt=RS TT terminal Function
TT=OA
‐
Connect the outside air temperature sensor to the TT terminals to display the
outside Air Temperature. (Required for all outside air control functions to operate.)
TT=RS
‐
Connect the remote room temperature sensor to the TT terminals to measure
the temperature at a remote location away from the A4100. (Note: This completely
disables the temperature sensor fitted to the A4100)
TT=AV The TT terminals will average the temperature measured by the A4100 internal
sensor and remote room temperature sensor.
TT=OF
–
A closed contact on the TT terminals will switch the A4100 On or OFF.
TT=OC A closed contact on the TT terminals will switch the A4100 to Occupied Mode,
where the oC & oH temperatures will replace the user set temperatures.
AF=0 Anti
‐
Freeze Function
AF=0
‐
Antifreeze function off.
AF=1
‐
Room temperature will not be permitted to fall below 5c (41F).
oH=OFF Occupied Mode Heat Set
