Mitsubishi Electric TC-24A User manual

1
Air-conditioner Control System
Touch Controller TC-24A
Installation Manual For distribution to dealers and contractors only
Thoroughly read the following safety precautions prior to installation. Refer to the Initial Setting Manual and the Instruction Book for
information on operating or making the settings for the controller. Also, refer to the air conditioning unit installation manuals for how to
connect cables or how to install air conditioning units.
●Thoroughly read the following safety precautions prior to installation.
●Observe the following precautions to ensure safety.
●Nomenclature
●After reading this manual, pass it on to the end user to retain for future reference.
●Keep this manual for future reference and refer to it as necessary. This manual should be made available to those who repair or relocate
the controller. Make sure that the manual is passed on to any future TC-24A users.
General precautions
WARNING Indicates a risk of death or serious injury.
CAUTION Indicates a risk of serious injury or structural damage.
All electric work must be performed by qualified personnel.
1 SafetyPrecautions
WARNING
(Prohibited actions) (Do not touch) (No water) (No wet hands) (Fire hazards) (Injury hazards) (Important actions) (Grounding required)(Electric shock hazards)
Do notinstall the controller where there is a risk of leaking flammable gas.
If flammable gas accumulates around the controller, it may ignite and cause a
fire or explosion.
To reduce the risk of shorting, current leakage, electric shock, malfunctions,
smoke, or fire, do not install the controller in a place exposed to waterorin a
condensing environment.
Controller must be installed by qualified personnel according to the
instructions detailed in the Installation Manual.
Improper installation may result in electric shock or fire.
Properly dispose of the packing materials. Plastic bags pose suffocation
hazard to children.
Take appropriate safety measures against earthquakes to prevent the
controller from causing injury.
To prevent injury, install the controller on a flat surface strong enough to
support itsweight.
To reduce the risk of fire or explosion, do not place flammable materials or
use flammable sprays around the controller.
To reduce the risk of damage to the controller, do not directly spray insecticide
or other flammablesprays on the controller.
To reduce the risk of injury, wear protective gear when working on the
controller.
To reduce the risk of electric shock or malfunctions, do not touch the touch
panel, switches, or buttons with a pointy or sharp object.
To reduce the risk of injury and electric shock, avoid contact with sharp edges
of certain parts.
To avoid injury from broken glass, do not apply excessive force on the glass
parts.
Do not install the unit in a place where large amounts of oil, steam, organic
solvents, or corrosive gases, such as sulfuric gas, are present or where
acidic/alkaline solutions or sprays are used frequently. These substances can
compromise the performance of the unit or cause certain components of the
unit to corrode, which can result in electric shock, malfunctions, smoke, or fire.
Precautions during installation
WARNING
CAUTION
To reduce the risk of shorting, current leakage, electric shock, malfunctions,
smoke, or fire, do not wash the controller with water or any other liquid.
Properly install all required covers to keep moisture and dust out of the
controller. Dust accumulationand water cancause electric shock, smoke, or fire.
To reduce the risk of electric shock, malfunctions, smoke or fire, do not
operate the switches/buttons or touch other electrical parts with wethands.
CAUTION
To reduce the risk of injury or electric shock, before spraying a chemical
around the controller, stopthe operation and cover the controller.
To reduce the risk of injury, keep children away while installing, inspecting, or
repairing the controller.
To reduce the risk of injury or electric shock, stop the operation and switch off
the power supply before cleaning, maintaining, or inspectingthe controller.

2
To reduce the risk of damage to the controller, malfunctions, smoke, or fire, do
not connect the power cable tothe signal terminal block.
To reduce the risk of current leakage, overheating, smoke, or fire, use properly
rated cables with adequate current carrying capacity.
All electric work must be performed by a qualified electrician according to the
local regulations, standards, and the instructions detailed in the Installation
Manual.Capacity shortage to the power supply circuit or improper installation
may result in malfunction, electric shock, smoke, or fire.
Use properly rated breakers and fuses (breaker, local switch <switch + fuse>,
no-fuse breaker).The use of a breaker with a breaking capacity greater than the
specified capacity may cause electric shock, malfunctions, smoke, or fire.
Proper grounding must be provided by a licensed electrician.
Do not connect the grounding wire to a gas pipe, water pipe, lightning rod, or
telephone wire. Improper grounding may resultin electric shock, smoke, fire, or
malfunction due to electrical noiseinterference.
To reduce the risk of electric shock, install a breaker and a residual current
circuit breaker on the power supply. To reduce the risk of electric shock, smoke,
or fire, install a breaker for each controller.
The controller should be repaired or moved only by qualified personnel. Do not
disassemble or modify the controller.
Improper installation orrepair may cause injury, electric shock, or fire.
Properly securethe cables in place and provide adequate slack in the cables
so as not to stress the terminals.Improperly connected cables may break,
overheat,and cause smokeor fire.
To reduce the risk of injury or electric shock, switch off the main power before
performing electrical work.
Precautions during wiring
WARNING
Precautions for moving or repairing the controller
WARNING
To avoid damage to the controller, use appropriate tools to install, inspect, or repair
the controller.
To avoid malfunctions, do not bundle power cables and signal cables together, or
place them in the same metallic conduit.
To avoid discoloration, do not use benzene, thinner, or chemical rag to clean the
controller.To clean the controller, wipe with a soft cloth soaked in water with mild
detergent, wipe off thedetergent with a wet cloth, and wipe off water with a dry cloth.
Take appropriate measures against electrical noise interference when installing the
air conditioners in hospitals or facilities with radio communication capabilities.
Inverter, high-frequency medical, or wireless communication equipment as well as
power generators may cause the air conditioning system to malfunction. Air
conditioning system may also adversely affect the operation of these types of
equipment by creating electrical noise.
TC-24A is designed for exclusive use with the Building Management System by
Mitsubishi Electric. The use of this controller for with other systems or for other
purposes may cause malfunctions.
Do not usesolderless terminals to connect cables to the terminal block.
Solderless terminals may come in contact with the circuit board andcause malfunc-
tions ordamagethe controller cover.
To avoid deformation and malfunction, do not install the remote controller in direct
sunlight or wherethe ambient temperature may exceed 40ºC (104ºF) or drop below
0ºC (32ºF).
To avoid damage to thecontroller, do not overtighten the screws.
To avoid damage to thecontroller, provide protectionagainst staticelectricity.
To avoid damage to thecontroller, do not make holes on the controller cover.
Additional precautions
To reduce the risk of shorting, electric shock, fire, or malfunction, do not touch
the circuit board with tools or with your hands, and do not allow dust to accumu-
late on the circuit board.
CAUTION
CAUTION
To reduce the risk of electric shock, malfunctions, or fire, seal the gap
between the cables and cable access holes withputty.
To reduce the risk of electric shock, shorting, or malfunctions, keep wire
pieces andsheath shavings out of the terminal block.
To reduce the risk of shorting, current leakage, electric shock, or malfunc-
tions, keep the cables out of contact with controller edges.
2 Parts list
The package contains the following parts.
*1 ISO metric screw thread
1. Touch Controller 2. Mounting bracket
Parts
Touch Controller
Mounting bracket
M4.1 wood screws x 16 *1
(Use to attach the mounting bracket to a wall.)
M4 Roundhead cross slot screws x 30 *1
(Use to attach the mounting bracket to an electric box.)
M4 roundhead screws with spring washers/washers x 20
(Use to attach the mounting bracket to the controller.) *1
Installation Manual (This manual)
Initial Setting Manual
Instruction Book
1.
2.
3.
4.
5.
6.
7.
8.
Qty.
1
1
4
2
2
1
1
1

3
2. Unit Components and Functions
Front (with the cover on)
Power LED Touch panel
Front (cover off)
For connection to the M-NET
(A, B: Terminal for connection to
the M-NET cable [non-polarized])
Back
External input
adapter cable
access hole
Bottom
External output
adapter cable
access hole
SD memory slot
(for program updates)
Controller cover
mounting screw
3 Product specifications
1. Specifications
*1 Not for use with a generic DC power supply device. Use the power supply unit for transmission line (PAC-SC51KUA etc.) by Mitsubishi.
*2 "Power consumption Coefficient" is a coefficient to calculate the relative power consumption of the devices that receive power through
the M-NET transmission line.
Refer to the note at the end of Chapter 4 "System diagram."
Power source
Operating conditions Temperature
Humidity
Weight
External dimensions (W x H x D)
Receives power from the power supply unit for transmission line or
from outdoor units via the M-NET transmission cable. The power
consumption coefficient
*2of Touch Controller is "4."
Specifications
30VDC *1
(for connection to M-NET only)
Operating temperature range 0~40˚C [32˚F~104˚F]
Storage temperature range -20~+70˚C [-4˚F~+158˚F]
30%~90%RH (Non-condensing)
0.5kg [1-1/8 lbs.]
180 x 120 x 30 mm 7-3/32 x 4-23/32 x 1-3/16 in
4 System diagram
1. System configuration
*1 The power consumption coefficient of the Touch Controller is 4 and that of an indoor unit is "1"*, which means that each TC-24A unit
consumes power equivalent to four indoor units. (*Indoor units receive power through the M-NET transmission line to maintain communica-
tion during power failure.) Refer to the CITY MULTI DATABOOK for details. The total power consumption of the connected devices should
not exceed the capacity of the power supply units.
The Design Tool by MITSUBISHI ELECTRIC allows its user to design air conditioning systems easily.
TC-24A is compatible with the Design Tool version 3.71 or later.
The Touch Controller can be connected to either TB7 or TB3.
When connected to TB3, no power supply units are required.
M-NET
TB7 TB3
ME
MA MA
R2
TB7 TB3
MA MA
[051]
Touch Controller*1
Model: TC-24A
[201]
Indoor unit
Power supply unit for transmission cable
(sold separately)
Model: PAC-SC51KUA
Outdoor unit
Group 3
Group 4 Group 5
Group 6
Outdoor unit BC controller LOSSNAY
unit
Outdoor
unit
Mr. Slim®
outdoor unit MXZ
Local remote controller
M-NET transmission cable
MA remote controller cable
Numbers in the parentheses indicate address
numbers.
M-NET
M-NET
Mr. Slim®
outdoor unit
M-NET
Interface
M-NET
adapter
Note:
Main SC
Group 2
Group 1
ON/OFF remote controller
Model: PAC-YT40ANRA
[202]
[001]
[106]
[006] [007] [008] [009] [010]
[056]
[057]
[002] [003] [004] [005]
[11] [12] [13] [14]
●The figure at left only shows the
transmission line connections.
Power supply lines are omitted.
●Provide a single ground point
(class D) by grounding the
shield wire of the M-NET
centralized controller transmis-
sion cable at one of the power
supply units. Provide a ground
point for the indoor-outdoor
transmission cable for each
outdoor unit
●Make sure that the centralized
control switch (SW2-1) on the
outdoor unit connected to the
M-NET cable is set to ON.
Refer to the outdoor unit
Installation Manual for detailed
information about dip switch
settings.

4
2. M-NET wiring design
(1) M-NET transmission cable specifications and restrictions
Facility type All facility types
Type Shielded cable
Cable CVVS CPEVS MVVS
Specifications No. of cores 2-core
Size CVVS, MVVS: 1.25 mm² (AWG16) or larger
CPEVS: ø1.2 mm (AWG16 or its equivalent) or larger
Maximum indoor-outdoor transmission cable length 200 m [656 ft]
500 m [1640 ft]
*The maximum cable distance from the power supply unit to each
outdoor unit or to the system controller is 200 m [656 ft].
Maximum length of transmission line for centralized
control and indoor-outdoor transmission cables
(Maximum cable distance via outdoor unit)
Main system controller 2
Group GroupGroup
Sub system controller
Group
Main system controller 2Main system controller 1
Group Group Group
Sub system controllerMain system controller
●Touch Controller is for exclusive use as a Main system Controller and cannot be used as a Sub system controller. The system cannot
be configured as shown in the examples below.
Note
►Groups that are not controlled by a main controller cannot be
controlled from a sub controller.
Group Group Group
Main system controller 1
►Each group cannot be controlled by two or more main
controllers.
►Sub controllers cannot be controlled by two or more main controllers.
*Exception:
Although AG-150A series and TC-24A are both designed for use as the main system controllers, they can be used in combination
with each other. When using them in combination, make the group settings from both controllers. Enter the address from each
controller in the field for registering the address of the system controller in each group.
Address setting
Assign the lowest address to the main indoor unit in the group, and assign sequential addresses
to the rest of the indoor units in the same group.
Note: The following models require two addresses: PEFY-AF1200CFM and PEFY-AF1200CFM-R
Assign an address that equals the lowest indoor unit address in the same refrigerant system plus
50.
Assign an address that equals the address of the outdoor unit in the same refrigerant system
plus 1.
Assign an arbitrary but unused address to each Lossnay unit after assigning an address to all
indoor units.
Same rules as for the indoor units apply. An M-NET adapter (sold separately) is required.
Same rules as for the indoor units apply. An M-NET interface (sold separately) is required.
Assign an address that equals the address of the main indoor unit with the lowest address in the
group plus 100. Add 150 instead of 100 to set a sub-remote controller.
Assign an address that equals the lowest number of the group to be controlled plus 200.
Assign an arbitrary but unused address to the controller after completing the address setting for the units
with an address between 1 and 50. The number of controllable units depends on the number of channels
used. (1 channel = I unit)
Address setting is not required. The connection of two remote controllers requires the main/sub setting
for each controller to be made.
Address range
1~50
51~100
52~100
1~50
1~50
1~50
101~200
201~250
1~50
–
Indoor unit
Outdoor unit
Auxiliary outdoor unit
(BC controller)
LOSSNAY unit
Mr. Slim®unit
MXZ unit
M-NET remote controller
Sub system controller
DIDO
(PAC-YG66DCA)
MA remote controller
●Address settings (Address overlaps are not allowed.)

5
Note
Not required for wall-surface installation
Shielded cable
CVVS, MVVS: 1.25 mm²~2 mm² (AWG16~14)
CPEVS: Ø1.2 mm~Ø1.6 mm (AWG16~14 or their equivalents)
Qty.
1
As appropriate
As appropriate
As appropriate
Parts
Triple electric box
Thin metal conduit
Lock nut and bushing
M-NET cable
The figure below shows the M-NET transmission wiring diagram for City Multi air conditioners.
The maximum length of centralized control M-NET transmission line and the indoor-outdoor transmission line per system can be
expressed in the following formulas. Labels "a through g" represent the sections of wiring in the system in the figure below. These
limits ensure normal signal communication over the M-NET transmission line.
If the line length exceeds the maximum length, M-NET signal attenuation can occur, rendering normal communication and control
impossible.
a+b+d+e(f) ≤500 m (1640 ft) a+b+c+g ≤500 m (1640 ft) e(f)+d+c+g ≤500 m (1640 ft)
The maximum length of local remote controller cable is 10 m (32 ft). The length that exceeds 10 m (32 ft) must be included in the
maximum total line length 500 m (1640 ft).
ac
edb
f
g
Outdoor
unit
Outdoor
unit
Indoor unit Indoor unit
Indoor unit
Indoor unit Indoor unit
Power supply
unit for transmission
cable
System
controller
Indoor-outdoor
transmission line
10 m (32 ft)
Centralized controller
transmission line
M-NET
remote
controller
5 Installation
1. Field-supplied parts
The following parts are required to install the controller.
2. Required tools
•A knife or nippers •Crosshead driver
3. Installation methods
Follow the instructions provided for the selected installation option.
(a) Wall-embedded installation using an electric box
(b) Wall-surface installation
(b-1) To route the cable through the wall
(b-2) To route the cable along the wall surface
4. Preparation
(1) Install a breaker on the power supply unit side before installing the controller.
(2) Select an installation site for the Touch Controller.
• Install the controller at the user's eye level for easy operation.
• Ensure there is enough clearance space as shown in the figure at right.
•Ensure there is enough clearance space to allow for easy access to the panel and the
buttons.
(3) Bring the cable end up to the controller.
Ensure the M-NET transmission cables and external input/output cables are long enough to
reach the controller. Have extra cables to extend these cables as necessary.
• To install the controller according to the instructions provided in sections (a) and (b-1) above
Include an extra 30 cm (12 in) of cable to provide adequate slack in the cable.
Remove the sheath on the M-NET transmission cable up to 20 cm (8 in) from the end.
• To install the controller according to the instructions provided in section (b-2) above
Include an extra 15 cm (6 in) of cable to provide adequate slack in the cable.
Remove the sheath on the M-NET transmission cable up to 10 cm (4 in) from the end.
(4) Prepare the Touch Controller.
Unscrew the screw at the bottom of the
controller, and remove the cover.
To route the cable along the wall surface, cut
out the rectangle knockout hole (18 mm (W)
x 9 mm (D)) at the top of the controller with a
knife or a nipper (shown as the shaded area
in the figure below at right).
30
(1.3/16)
30 (1.3/16)
50 (2)
Unit: mm (in)
Refer to section 6 "External input
output" for how to connect external
input/output signal cables.
Note
Do not push the shield wire into
or connect it to the TC-24A. Trim
the shield wire, cover it with vinyl
insulating tape, and leave it outside
the controller.
Note
30
(1.3/16)
Touch controller
outline

2
To reduce the risk of damage to the controller, malfunctions, smoke, or fire, do
not connect the power cable tothe signal terminal block.
To reduce the risk of current leakage, overheating, smoke, or fire, use properly
rated cables with adequate current carrying capacity.
All electric work must be performed by a qualified electrician according to the
local regulations, standards, and the instructions detailed in the Installation
Manual.Capacity shortage to the power supply circuit or improper installation
may result in malfunction, electric shock, smoke, or fire.
Use properly rated breakers and fuses (breaker, local switch <switch + fuse>,
no-fuse breaker).The use of a breaker with a breaking capacity greater than the
specified capacity may cause electric shock, malfunctions, smoke, or fire.
Proper grounding must be provided by a licensed electrician.
Do not connect the grounding wire to a gas pipe, water pipe, lightning rod, or
telephone wire. Improper grounding may resultin electric shock, smoke, fire, or
malfunction due to electrical noiseinterference.
To reduce the risk of electric shock, install a breaker and a residual current
circuit breaker on the power supply. To reduce the risk of electric shock, smoke,
or fire, install a breaker for each controller.
The controller should be repaired or moved only by qualified personnel. Do not
disassemble or modify the controller.
Improper installation orrepair may cause injury, electric shock, or fire.
Properly securethe cables in place and provide adequate slack in the cables
so as not to stress the terminals.Improperly connected cables may break,
overheat,and cause smokeor fire.
To reduce the risk of injury or electric shock, switch off the main power before
performing electrical work.
Precautions during wiring
WARNING
Precautions for moving or repairing the controller
WARNING
To avoid damage to the controller, use appropriate tools to install, inspect, or repair
the controller.
To avoid malfunctions, do not bundle power cables and signal cables together, or
place them in the same metallic conduit.
To avoid discoloration, do not use benzene, thinner, or chemical rag to clean the
controller.To clean the controller, wipe with a soft cloth soaked in water with mild
detergent, wipe off thedetergent with a wet cloth, and wipe off water with a dry cloth.
Take appropriate measures against electrical noise interference when installing the
air conditioners in hospitals or facilities with radio communication capabilities.
Inverter, high-frequency medical, or wireless communication equipment as well as
power generators may cause the air conditioning system to malfunction. Air
conditioning system may also adversely affect the operation of these types of
equipment by creating electrical noise.
TC-24A is designed for exclusive use with the Building Management System by
Mitsubishi Electric. The use of this controller for with other systems or for other
purposes may cause malfunctions.
Do not usesolderless terminals to connect cables to the terminal block.
Solderless terminals may come in contact with the circuit board andcause malfunc-
tions ordamagethe controller cover.
To avoid deformation and malfunction, do not install the remote controller in direct
sunlight or wherethe ambient temperature may exceed 40ºC (104ºF) or drop below
0ºC (32ºF).
To avoid damage to thecontroller, do not overtighten the screws.
To avoid damage to thecontroller, provide protectionagainst staticelectricity.
To avoid damage to thecontroller, do not make holes on the controller cover.
Additional precautions
To reduce the risk of shorting, electric shock, fire, or malfunction, do not touch
the circuit board with tools or with your hands, and do not allow dust to accumu-
late on the circuit board.
CAUTION
CAUTION
To reduce the risk of electric shock, malfunctions, or fire, seal the gap
between the cables and cable access holes withputty.
To reduce the risk of electric shock, shorting, or malfunctions, keep wire
pieces andsheath shavings out of the terminal block.
To reduce the risk of shorting, current leakage, electric shock, or malfunc-
tions, keep the cables out of contact with controller edges.
2 Parts list
The package contains the following parts.
*1 ISO metric screw thread
1. Touch Controller 2. Mounting bracket
Parts
Touch Controller
Mounting bracket
M4.1 wood screws x 16 *1
(Use to attach the mounting bracket to a wall.)
M4 Roundhead cross slot screws x 30 *1
(Use to attach the mounting bracket to an electric box.)
M4 roundhead screws with spring washers/washers x 20
(Use to attach the mounting bracket to the controller.) *1
Installation Manual (This manual)
Initial Setting Manual
Instruction Book
1.
2.
3.
4.
5.
6.
7.
8.
Qty.
1
1
4
2
2
1
1
1

5
Note
Not required for wall-surface installation
Shielded cable
CVVS, MVVS: 1.25 mm²~2 mm² (AWG16~14)
CPEVS: Ø1.2 mm~Ø1.6 mm (AWG16~14 or their equivalents)
Qty.
1
As appropriate
As appropriate
As appropriate
Parts
Triple electric box
Thin metal conduit
Lock nut and bushing
M-NET cable
The figure below shows the M-NET transmission wiring diagram for City Multi air conditioners.
The maximum length of centralized control M-NET transmission line and the indoor-outdoor transmission line per system can be
expressed in the following formulas. Labels "a through g" represent the sections of wiring in the system in the figure below. These
limits ensure normal signal communication over the M-NET transmission line.
If the line length exceeds the maximum length, M-NET signal attenuation can occur, rendering normal communication and control
impossible.
a+b+d+e(f) ≤ 500 m (1640 ft) a+b+c+g ≤ 500 m (1640 ft) e(f)+d+c+g ≤ 500 m (1640 ft)
The maximum length of local remote controller cable is 10 m (32 ft). The length that exceeds 10 m (32 ft) must be included in the
maximum total line length 500 m (1640 ft).
ac
edb
f
g
Outdoor
unit
Outdoor
unit
Indoor unit Indoor unit
Indoor unit
Indoor unit Indoor unit
Power supply
unit for transmission
cable
System
controller
Indoor-outdoor
transmission line
10 m (32 ft)
Centralized controller
transmission line
M-NET
remote
controller
5 Installation
1. Field-supplied parts
The following parts are required to install the controller.
2. Required tools
•A knife or nippers •Crosshead driver
3. Installation methods
Follow the instructions provided for the selected installation option.
(a) Wall-embedded installation using an electric box
(b) Wall-surface installation
(b-1) To route the cable through the wall
(b-2) To route the cable along the wall surface
4. Preparation
(1) Install a breaker on the power supply unit side before installing the controller.
(2) Select an installation site for the Touch Controller.
• Install the controller at the user's eye level for easy operation.
• Ensure there is enough clearance space as shown in the figure at right.
• Ensure there is enough clearance space to allow for easy access to the panel and the
buttons.
(3) Bring the cable end up to the controller.
Ensure the M-NET transmission cables and external input/output cables are long enough to
reach the controller. Have extra cables to extend these cables as necessary.
• To install the controller according to the instructions provided in sections (a) and (b-1) above
Include an extra 30 cm (12 in) of cable to provide adequate slack in the cable.
Remove the sheath on the M-NET transmission cable up to 20 cm (8 in) from the end.
• To install the controller according to the instructions provided in section (b-2) above
Include an extra 15 cm (6 in) of cable to provide adequate slack in the cable.
Remove the sheath on the M-NET transmission cable up to 10 cm (4 in) from the end.
(4) Prepare the Touch Controller.
Unscrew the screw at the bottom of the
controller, and remove the cover.
To route the cable along the wall surface, cut
out the rectangle knockout hole (18 mm (W)
x 9 mm (D)) at the top of the controller with a
knife or a nipper (shown as the shaded area
in the figure below at right).
30
(1.3/16)
30 (1.3/16)
50 (2)
Unit: mm (in)
Refer to section 6 "External input
output" for how to connect external
input/output signal cables.
Note
Do not push the shield wire into
or connect it to the TC-24A. Trim
the shield wire, cover it with vinyl
insulating tape, and leave it outside
the controller.
Note
30
(1.3/16)
Touch controller
outline
6
5. Installation steps
(1) Routing the cables
(a) Wall-embedded installation using an electric box
Pull the M-NET transmission cable through the hole on the wall and the electric
box, and seal the gap between the cable and the end of the conduit tube.
(b) Wall-surface installation
•To route the cable through the wall :
Drill a hole in the wall, push the M-NET transmission cable through the hole, and
seal the gap between the cable and the hole with putty.
•To route the cable along the wall surface :
It is approximately 10 cm (4 in) from the cable access hole on the back of TC-24A
to the M-NET terminal block. Trim off the excess transmission cable, if any.
(2) Attach the mounting bracket on the wall.
Attach the mounting bracket on the designated area on the wall using the supplied
screws.
The pitch for the mounting bracket is shown in the figure at right.
(3) Attach the controller to the mounting bracket.
After inserting the M-NET transmission cables (A and B) through the cable access hole
on the controller from the back, hang the controller on the hooks of the mounting
bracket.
Attach the controller to the mounting bracket using twenty M4 screws with spring
washers/washers.
(4) Connect the cables.
Connect the M-NET transmission cables (A and B) to the terminal block. M-NET
transmission cable is non-polarized.
Insert the cables in the groove on the controller so they will not be pinched when
the cover is installed.
(5) Replace the cover.
Snap the cover into place, and attach it to the controller with a screw at the bottom.
*Tighten the screw to a torque of 10 N·m or less.
*To route the cable along the wall surface
Secure the cables in place with a cable cover, and seal the gap between the cable cover
and the controller with putty.
• The M-NET terminal on the controller is only for connection to the M-NET cable.
Do not connect an AC power supply.
• Do not daisy-chain M-NET terminals.
Note
To reduce the risk of electric shock, malfunctions, or fire, seal the
gap between the cables and access holes with putty.
Wall Remove the sheath,
and insulate the
shield wire with vinyl tape.
M-NET transmission cable
A , B
Seal the gap with putty.
Cable access hole
Hang the controller on the
hooks of the mounting bracket.
Screw the controller
on the bracket.
Insert the cable into the groove.
M-NET transmission cable
(non-polarized)
A B
Use a cable cover.
Seal the gap with putty.
92 (3.5/8)
83.5 (3.5/16)
Unit: mm (in)
To reduce the risk of electric shock, malfunctions, or fire, seal the
gap between the cables and access holes with putty.
Conduit tube
Electric box
Bushing
M-NET transmission cable
A , B
Remove the sheath,
and insulate the
shield wire with
vinyl tape.
Locknut
Wall
Cable access hole
Seal the gap with putty.
7
Mode
1
2
3
4
External input signal setting
Do not use external input. (Factory setting)
Emergency stop/Normal operation signal
(level signal)
ON/OFF signal (level signal)
ON/OFF and Prohibit/Permit remote
controller operation signal (pulse signal)
Notes
-
When the units are not operating after receiving an emergency stop signal,
the ON/OFF operation from the local remote controller will not be allowed,
and the ON/OFF and Prohibit/Permit settings on the Touch Controller
cannot be changed. Timer operation will not function.
ON/OFF operation from the local remote controller will not be allowed, and
the ON/OFF and Prohibit/Permit settings on the Touch Controller cannot
be changed. Timer operation will not function.
The ON-signal pulse width should be set to a value between 0.2 and 1
seconds.
6 Usingexternal input/output
1. External signal input (CN2)
*To use external input, an external input/output adapter (PAC-YT41HAA; sold separately) is required.
(1) External input
Using external dry contact signals, the following operation of all air conditioning units can be controlled from the Touch Controller:
Emergency stop/Normal operation, ON/OFF, Permit/Prohibit local remote controller operation. These settings are made on the
External Input Settings on the Initial Settings screen that is accessible from the Service Menu screen. (Refer to Chapter 3 in the Initial
Setting Manual.)
(3) External input specifications
(A) Level signal
• tIf the type of signal assigned to the external input contact is "Emergency/Normal," the units in normal operation will stop when
the signal input changes from OFF to ON. Conversely, the units that are stopped will resume normal operation when the signal
changes from ON to OFF. After the emergency stop is reset, the original operating status of each air conditioning unit will not be
automatically restored. The air conditioning units must be started up manually.
• If the type of signal assigned to the external input contact is "ON/OFF," the units that are stopped will start operation after the
input signal changes from OFF to ON. Conversely, the units that are in operation will stop after the input signal changes from
ON to OFF.
(B) Pulse signal
• If the incoming signal is the same as the signal that is currently being received, no status change will occur.
• If local remote controller operation is prohibited, ON/OFF status, operation mode, or temperature setting cannot be changed and
filter sign cannot be reset from the remote controller.
• The ON-signal pulse width should be set to a value between 0.2 and 1 seconds.
(4) Sample circuit recommended
(A) Level signal (B) Pulse signal
(2) Level signal and pulse signal
CN2
1
2
3
4
5
Lead wire
Green
Yellow
Orange
Red
Brown
Emergency stop/Normal
operation signal (level signal)
Emergency stop/Normal
operation signal input
Not used
Not used
Not used
Built-in 5 VDC power for external input * Exclusively for use with external input. Not usable for other purposes.
ON/OFF level signal
ON/OFF signal input
Not used
Not used
Not used
ON/OFF, Prohibit/Permit remote
controller operation (pulse signal)
ON signal input
OFF signal input
Prohibit-local-remote-controller-
operation signal input
Permit-local-remote-controller-
operation signal input
(ex.)ON/OFF
Signal 1 (ON)
Signal 2 (OFF)
*Same for Prohibit/Permit remote controller operation.
OFF
Contact ON
Contact OFF OFFON
Normal
operation
Contact ON
Contact OFF
Normal
operation
Emergency
stop
Contact ON
Contact OFF
OFF
Contact ON
Contact OFF OFFON
0.2 to 1 seconds
0.2 to 1 seconds
(A) Level signal (B) Pulse signal
CN2
ON/OFF
or Emergency stop

Green
Yellow X1
Touch Controller
Maximum
10 m
(32 ft)
X1
X1 X2 Y1 Y2
1
2
3
4
5
ON
OFF Permit
Prohibit
CN2 Green
Yellow X1
Touch Controller
Maximum
10 m
(32 ft)
Orange X2
Red Y1
Y2
Brown
1
2
3
4
5
Field supplied Field supplied
8
•The relays and extension cables are field supplied.
•Use a no-voltage contact and minute load relay (minimum application load 5VDC-1mA).
•The length of the connection cable extension should not exceed 10 m (32 ft). (Use a cable of 0.3 mm² (22AWG) or thicker.)
•Insulate the area with vinyl tape where the controller cable and the extension cable are connected.
•Insulate the end of unused lead wires with tape.
2. External signal output
*To use external output, an external input/output adapter (PAC-YT41HAA; sold separately) is required.
Requires a separate external power source.
(1) External signal output (CN3)
Operation signal will be output when one or more air conditioning units are in operation, and error signal will be output when one or
more units are in error.
The On-signal will be output even during an error.
(2) External output specifications
(3) Sample circuit recommended
Relay-driven circuit
CN3
1
2
Lead wire
Brown
Red
Signal
ON/OFF
Error/Normal
CN3
3
4
Lead wire
Orange
Yellow
Signal
Ground for all external outputs
Not used
Parts
External input/output
adapter
Model
PAC-YT41HAA
Usage
Enables the use of external
input/output function
Note
Required to use the external input/output function
5-wire cable (input) , 4-wire cable (output)
CN3 Diode (*2)
Power source
(*1)
Z１
Z2
L１
L2
Red
Brown
Orange
Yellow
Touch Controller
2
1
3
4
Maximum
10 m
(32 ft)
Z2
Z1
L1 : Operation indicator
L2 : Error indicator
Use relays that meet the following specifications for relays indicated as Z1
and Z2 in the figure.
Operating coil
Rated voltage:12 VDC or 24 VDC
Power consumption: 0.9 W or below
(*1) Select a power supply suitable for the relays used. (12 VDC or 24 VDC)
(*2) Use a diode at each end of the relay coil.
• Each element will turn on when an error occurs during operation.
• The maximum length of extension cable is 10 m (32 ft). (Use a cable of
0.3 mm² (22AWG) or thicker.)
• Insulate the area with vinyl tape where the controller cable and the
extension cable are connected.
• Relays, lamps, diode, extension cables are field-supplied.
●To connect cables from an external input/output adapter to connectors CN2 and CN3 on the controller, cut out the appropriate
knockout holes on the controller with nippers.
After connecting the cables to the connectors, hold the cables in place with a piece of tape included with the external
input/output adapter (PAC-YT41HAA).
●Use caution not to damage the circuit board with the nippers or other tools when cutting out knockout holes.
Note
7 Usingan SD memorycard
8 Optional Parts
9 Note
■ A protective film is placed on the display.
Remove the protective film off the display before use.
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
WT05821X01
Field supplied
The Touch Controller has a slot for an SD memory card at the
bottom that can be used to update software.
Refer to the Initial Setting Manual for the detailed information
about updates.
*Only the 1GB and 2GB SD memory cards by SanDisk are
supported.
Back of controller
Cut out the
knockout holes. CN2
External input connector
CN3
External output connector
Tape
External
input/output adapter
Bottom of controller
(a) Remove the SD memory card slot cover from the controller.
(b) Insert the SD memory card into the slot until it clicks.
(c) To remove the SD memory card, push it in until it clicks.
SD memory slot (for program updates)
“SD Logo is a trademark of SD-3C , LLC.”
(a)
(b) (c)

7
Mode
1
2
3
4
External input signal setting
Do not use external input. (Factory setting)
Emergency stop/Normal operation signal
(level signal)
ON/OFF signal (level signal)
ON/OFF and Prohibit/Permit remote
controller operation signal (pulse signal)
Notes
-
When the units are not operating after receiving an emergency stop signal,
the ON/OFF operation from the local remote controller will not be allowed,
and the ON/OFF and Prohibit/Permit settings on the Touch Controller
cannot be changed. Timer operation will not function.
ON/OFF operation from the local remote controller will not be allowed, and
the ON/OFF and Prohibit/Permit settings on the Touch Controller cannot
be changed. Timer operation will not function.
The ON-signal pulse width should be set to a value between 0.2 and 1
seconds.
6 Usingexternal input/output
1. External signal input (CN2)
*To use external input, an external input/output adapter (PAC-YT41HAA; sold separately) is required.
(1) External input
Using external dry contact signals, the following operation of all air conditioning units can be controlled from the Touch Controller:
Emergency stop/Normal operation, ON/OFF, Permit/Prohibit local remote controller operation. These settings are made on the
External Input Settings on the Initial Settings screen that is accessible from the Service Menu screen. (Refer to Chapter 3 in the Initial
Setting Manual.)
(3) External input specifications
(A) Level signal
• tIf the type of signal assigned to the external input contact is "Emergency/Normal," the units in normal operation will stop when
the signal input changes from OFF to ON. Conversely, the units that are stopped will resume normal operation when the signal
changes from ON to OFF. After the emergency stop is reset, the original operating status of each air conditioning unit will not be
automatically restored. The air conditioning units must be started up manually.
•If the type of signal assigned to the external input contact is "ON/OFF," the units that are stopped will start operation after the
input signal changes from OFF to ON. Conversely, the units that are in operation will stop after the input signal changes from
ON to OFF.
(B) Pulse signal
• If the incoming signal is the same as the signal that is currently being received, no status change will occur.
•If local remote controller operation is prohibited, ON/OFF status, operation mode, or temperature setting cannot be changed and
filter sign cannot be reset from the remote controller.
• The ON-signal pulse width should be set to a value between 0.2 and 1 seconds.
(4) Sample circuit recommended
(A) Level signal (B) Pulse signal
(2) Level signal and pulse signal
CN2
1
2
3
4
5
Lead wire
Green
Yellow
Orange
Red
Brown
Emergency stop/Normal
operation signal (level signal)
Emergency stop/Normal
operation signal input
Not used
Not used
Not used
Built-in 5 VDC power for external input * Exclusively for use with external input. Not usable for other purposes.
ON/OFF level signal
ON/OFF signal input
Not used
Not used
Not used
ON/OFF, Prohibit/Permit remote
controller operation (pulse signal)
ON signal input
OFF signal input
Prohibit-local-remote-controller-
operation signal input
Permit-local-remote-controller-
operation signal input
(ex.)ON/OFF
Signal 1 (ON)
Signal 2 (OFF)
*Same for Prohibit/Permit remote controller operation.
OFF
Contact ON
Contact OFF OFFON
Normal
operation
Contact ON
Contact OFF
Normal
operation
Emergency
stop
Contact ON
Contact OFF
OFF
Contact ON
Contact OFF OFFON
0.2 to 1 seconds
0.2 to 1 seconds
(A) Level signal (B) Pulse signal
CN2
ON/OFF
or Emergency stop
Green
Yellow X1
Touch Controller
Maximum
10 m
(32 ft)
X1
X1 X2 Y1 Y2
1
2
3
4
5ON OFF Permit
Prohibit
CN2 Green
Yellow X1
Touch Controller
Maximum
10 m
(32 ft)
Orange X2
Red Y1
Y2
Brown
1
2
3
4
5
Field supplied Field supplied

8
•The relays and extension cables are field supplied.
•Use a no-voltage contact and minute load relay (minimum application load 5VDC-1mA).
•The length of the connection cable extension should not exceed 10 m (32 ft). (Use a cable of 0.3 mm² (22AWG) or thicker.)
•Insulate the area with vinyl tape where the controller cable and the extension cable are connected.
•Insulate the end of unused lead wires with tape.
2. External signal output
*To use external output, an external input/output adapter (PAC-YT41HAA; sold separately) is required.
Requires a separate external power source.
(1) External signal output (CN3)
Operation signal will be output when one or more air conditioning units are in operation, and error signal will be output when one or
more units are in error.
The On-signal will be output even during an error.
(2) External output specifications
(3) Sample circuit recommended
Relay-driven circuit
CN3
1
2
Lead wire
Brown
Red
Signal
ON/OFF
Error/Normal
CN3
3
4
Lead wire
Orange
Yellow
Signal
Ground for all external outputs
Not used
Parts
External input/output
adapter
Model
PAC-YT41HAA
Usage
Enables the use of external
input/output function
Note
Required to use the external input/output function
5-wire cable (input) , 4-wire cable (output)
CN3 Diode (*2)
Power source
(*1)
Z１
Z2
L１
L2
Red
Brown
Orange
Yellow
Touch Controller
2
1
3
4
Maximum
10 m
(32 ft)
Z2
Z1
L1 : Operation indicator
L2 : Error indicator
Use relays that meet the following specifications for relays indicated as Z1
and Z2 in the figure.
Operating coil
Rated voltage:12 VDC or 24 VDC
Power consumption: 0.9 W or below
(*1) Select a power supply suitable for the relays used. (12 VDC or 24 VDC)
(*2) Use a diode at each end of the relay coil.
• Each element will turn on when an error occurs during operation.
• The maximum length of extension cable is 10 m (32 ft). (Use a cable of
0.3 mm² (22AWG) or thicker.)
• Insulate the area with vinyl tape where the controller cable and the
extension cable are connected.
• Relays, lamps, diode, extension cables are field-supplied.
●To connect cables from an external input/output adapter to connectors CN2 and CN3 on the controller, cut out the appropriate
knockout holes on the controller with nippers.
After connecting the cables to the connectors, hold the cables in place with a piece of tape included with the external
input/output adapter (PAC-YT41HAA).
●Use caution not to damage the circuit board with the nippers or other tools when cutting out knockout holes.
Note
7 Usingan SD memorycard
8 Optional Parts
9 Note
■ A protective film is placed on the display.
Remove the protective film off the display before use.
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
WT05821X01
Field supplied
The Touch Controller has a slot for an SD memory card at the
bottom that can be used to update software.
Refer to the Initial Setting Manual for the detailed information
about updates.
*Only the 1GB and 2GB SD memory cards by SanDisk are
supported.
Back of controller
Cut out the
knockout holes. CN2
External input connector
CN3
External output connector
Tape
External
input/output adapter
Bottom of controller
(a) Remove the SD memory card slot cover from the controller.
(b) Insert the SD memory card into the slot until it clicks.
(c) To remove the SD memory card, push it in until it clicks.
SD memory slot (for program updates)
“SD Logo is a trademark of SD-3C , LLC.”
(a)
(b) (c)