Toyotomi TGS-28CFTA-E User manual

Installation and Operation Manual
Multi Variable Air Conditioners
Floor and Ceiling Type Indoor Unit
Please read this manual carefully before using this product and keep it properly for future reference.
Models:
TGS-28CFTA-E
TGS-36CFTA-E
TGS-50CFTA-E
TGS-71CFTA-E
TGS-90CFTA-E
TGS-112CFTA-E
TGS-125CFTA-E
TGS-140CFTA-E

USER NOTICES
◆When operating, the entire capacity of the cooperating indoor unit should be not larger than that of
outdoor unit. Otherwise, it will cause the shortage of cooling (heating) capacity.
◆The power supply of the indoor unit must be the unied power supply. And all indoor units must
be controlled by one main power control. Disconnect the main power of all the indoor units before
cleaning.
◆In order to turn on the units successfully, the main power switch should be opened 8 hours before
the operation.
◆After receiving the turn off signal, every indoor unit will continue to work for 20-70sec to make use
of the rest cool air or the rest heat air in the heat exchanger, while preparing for the next operation.
And this is normal.
◆When the selected operating mode of the indoor unit are clash with the operating mode of the
outdoor unit, the malfunction light will blink after 5s on the indoor unit or remote controller
showing that the operation clash, then the indoor unit will stop. At this time, change the operation
mode of the indoor unit to the one that would not clash with the outdoor operating mode to make
the operation normal. The cooling mode is not clash with the dry mode, while the fan mode is not
clash with any mode.
◆The appliance shall not be installed in the laundry .The appliance shall not be used by children
without supervisor.
◆An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be
connected in xed wiring.
◆Missing information regarding electric supply tolerances(+/-10%, +/-1Hz) in documentation.
◆Humidity range: 30%~95%.
◆Installation altitude: Max 1000m.
◆Transport/storage temperature range:-25C~55°C. And for short period not exceeding 24h, the
temperature is up to 70°C
◆Main switch provided by end user: main switch handle should be black or gray, it can be locked in
“OFF” position with padlock
◆The main disconnection device should be installed at a height of 0.6~1.7m. over current protection
is required (EN 60947-3, EN 60947-2)
◆The cooling range of the unit is the outdoor environment temp.18°C~43°C DB, the heating range of
the unit( only for the heat pump type unit) is the outdoor environment temp. -16°C~15°C WB.

CONTENTS
1 SAFETY PRECAUTIONS .............................................................................1
2 SELECTION OF INSTALLATION LOCATION AND PRECAUTIONS ...2
2.1 Selection of Installation Location for Air Conditioner Unit.......................2
2.2 Selection of Installation Location...............................................................2
2.3 Caution for Installation Where Air Conditioner Trouble is Likely to Occur
..........................................................................................................................2
3 INSTALLATION OF FLOOR AND CEILING TYPE INDOOR UNIT........2
3.1 Space Dimension for Installation of the Unit .............................................2
3.2 There are 2 Styles of Installation................................................................3
3.3 In Case of Hanging ....................................................................................4
3.4 Electrical Wiring.........................................................................................5
3.5 Install the Drainage Pipe.............................................................................6
3.6 Install the Connection Pipes .......................................................................6
3.7 Dial-up of Unit............................................................................................7
4 CONSTITUTES AND NAMES OF EVERY PART OF FLOOR AND
CEILING TYPE INDOOR UNIT.....................................................................11
5 WORKING TEMPERATURE RANGE.......................................................11
6 MAINTENANCE METHOD .......................................................................11
6.1 Cleaning the Air Filters.............................................................................12
6.2 Cleaning the Unit......................................................................................12
6.3 At the Start of the Season..........................................................................12
6.4 During the off Season ...............................................................................12
7 OPERATING INSTRUCTIONS .................................................................13
8 MALFUNCTION ANALYZING .................................................................15
8.1 Service Center...........................................................................................16
8.2 After-sales Service ....................................................................................16

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Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
1 SAFETY PRECAUTIONS
A. Please read this manual carefully before use this unit, and operate it correctly according to the guide in
this manual.
B. Please take specially note to the meaning of these two marks.
Warning!
This mark means that it may cause casualty or badly hurt if the operation is incorrect.
Caution!
This mark means that it may cause casualty or property loss if the operation is incorrect.
Warning!
◆For the usage safety of the air conditioner, the units should be earthed reliably .Do not connect the
earth line with the gas pipe, water pipe, drainage pipe or other places that specialized personnel
considers unsafe.
◆Air conditioner must use special power supply circuit and switches for creepage protect and air with
enough capacity should be installed in the circuit.
◆Ensure that the connecting of power cord is normal, otherwise, electric shock or re may happened.
◆Do not cut off the power supply to turn off the unit when it is running, otherwise life time of units
may shortened.
◆Do not mangle wire or adopts wires that are not recommend to use, otherwise, electric shock or re
may happened.
◆Please don’t operate the unit by wet hand, or electric shock may happened.
◆Don’t insert nger or stick like things into outlet vent, otherwise, damage may be happened.
◆Cut down the main power switch immediately if malfunction (such as smell the burning odor
etc.) happen, and then contact the special engaged maintenance center. If the abnormal state is
maintained, the unit may be damaged or electric shock or re may be happened.
◆Do not ret the conditioner. Please contact the agency or professional personnel to repair or move
the conditioner.
◆Do not adopt fuse with unsuitable capacity or adopt iron thread instead of fuse, otherwise
malfunction or re may happened.
◆Do cut off the main power supply of air conditioner if it would not be used for a long time.
◆Please turn off the main power of the whole unit before cleaning the conditioner, otherwise electric
shock or harm may be happened.
◆Chemical sprayer should be placed 1m or more away from the unit, otherwise re or explode may
be caused.
◆Do not let blockage happened in the inlet or outlet vent of the air conditioner, this would cause low
efcacy or unit stop.

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Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
2 SELECTION OF INSTALLATION LOCATION AND PRECAUTIONS
2.1 Selection of Installation Location for Air Conditioner Unit
◆The installation of air conditioner unit must be in accordance with national and local safety codes.
◆Installation quality will directly affect the normal use of air conditioner unit. The user is prohibited
from installation by himself. Please contact your dealer after buying this machine. Professional
installation workers will provide installation and test services according to installation manual.
◆Do not connect to power until all installation work is completed.
2.2 Selection of Installation Location
◆Such a place where cool air can be distributed throughout the room.
◆Such a place where is condensation water is easily drained out.
◆Such a place that can handle the weight of indoor unit.
◆Such a place, which has easy access for maintenance.
◆Such a place where is permitting easy connection with the outdoor unit.
◆Such a place where is 1m or more away from other electric appliances such as television, audio
device, etc.
◆Avoid a location where there is heat source, high humidity or inammable gas.
◆Do not use the unit in the immediate surroundings of a laundry, a bath, a shower or a swimming
pool.
◆Be sure that the installation conforms to the installation dimension diagram.
2.3 Caution for Installation Where Air Conditioner Trouble is Likely to Occur
◆Where there is too much of oil.
◆Where it is acid base area.
◆Where there is irregular electrical supply.
3 INSTALLATION OF FLOOR AND CEILING TYPE INDOOR UNIT
3.1 Space Dimension for Installation of the Unit
The space around the unit is adequate for ventilation (Refer to Fig.1)

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Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
Fig.1
Important Notice:
●The unit must be installed by the professional personnel according to this install instruction to ensure
the well use.
●Please contact the local TOYOTOMI special nominated repair department before installation. Any malfunction
caused by the unit that is installed by the department that is not special nominated by TOYOTOMI would not deal
with on time by the inconvenience of the business contact.
●It should be done by professional personnel when the air conditioner unit is moved to other place.
3.2 There are 2 Styles of Installation
●Ceiling type
●Floor type
Each type is similar to the other as follows:
A. Determine the mounting position on ceiling or wall by using paper pattern to indicate indoor frame.
Mark the pattern and pull out the paper pattern. (Refer to Fig.2)
B. Remove the return grill, the side panel and the hanger bracket from the indoor unit as per procedure
bellow.
●Press the xing knob of the air intake grills, the grilles will be opened wider and then pull them out
from the indoor.
●Remove the side panel xing screw and pull to the front direction (arrow direction) to remove. Side
panel xing screw (Refer to Fig.3).
●Loosen two hanger bracket setting bolts (M8) on eath side for less than 10mm. Remove two hanger
bracket xing bolts (M6) on the rear side. Detach the hanger bracker by pulling it backward (Refer to
Fig.5).
Fig.2 Fig.3
C. Set the suspension bolt. (Use W3/8 or M10 size suspension bolts)
●Adjust the distance from the unit to the ceiling slab beforehand (Refer to Fig.4)
D. Fix the hanger bracket to the suspension bolt.
Warning!
●Make sure that extended suspension bolt from the ceiling stays inside the arrowed position. Readjust
the hanger bracket when it is outside the arrowed position. (Refer to Fig.6)
●Suspension bolt stays inside the cap of indoor unit. Never remove the cap.
E. Lift the unit and slide forward unit the dent. (Refer to Fig.7)
F. Screw tightly both hanger bracket-setting bolts (M8). (Refer to Fig.5)
G. Screw tightly both hanger bracket-xing bolts (M6) to prevent the movement of the indoor unit. (Refer

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Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
to Fig.5)
H. Adjust the height so that rear side of the drainpipe slightly inclines to improve drainage.
Caution!
●Adjust the height by turning the nut with a spanner.
●Insert the spanner from the hanger bracket opening. (Refer to Fig.8)
3.3 In Case of Hanging
It is possible to install using inward facing hanger brackets by not removing the brackets from the indoor
unit. (Refer to Fig.9)
Be sure to use only the specied accessories and parts for installation work.
When installing the indoor unit, you can refer the paper pattern for installation, and make sure that the
drainage side must be 10mm lower than the other side in order to drain the condensation water uently.

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Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
Unit:mm
Model A B H C D
1220 225 700 1158 280
1420 245 700 1354 280
1700 245 700 1634 280
3.4 Electrical Wiring
Caution: The power of every indoor unit should be unity power supply.
A. Open surface panel.
B. Remove the electrical box cover.
C. Route the power connection cord from the back of the indoor unit and pull it toward the front through
the wiring hole upward.
D. Connect the wiring (communication) through the piping hole of the chassis and the bottom of
the appliance upward, then connect the live wire to the Terminal board “L”;neutral wire to the Terminal
board“N”and connect the earthing wire to the screw terminal on the electric box. Insert the communication
wire on the control panel CN15, CN16 and X31of the indoor unit, and clamp them with the corresponding
wire clamp packed in the chassis;
E. Reassemble the electrical box cover.
F. Recover the surface panel.
G. The temperature of refrigerant circuit will be high, please keep the interconnection cable away from
the copper tube.
TGS-28CFTA-E
TGS-36CFTA-E
TGS-50CFTA-E
TGS-71CFTA-E
TGS-90CFTA-E
TGS-112CFTA-E
TGS-125CFTA-E
TGS-140CFTA-E

6
Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
Caution!
●The incorrect of wiring connecting would lead malfunction of some of the electric elements.
●Make sure that the lead between the connect end and the clamp end has some need space after the wire
is xed.
●The appliance shall be installed in accordance with national wiring regulations.
3.5 Install the Drainage Pipe
Make sure the drain ows out
Caution!
A. Drain piping
●The drainpipe outlet direction can be chosen from either the right rear or right.
●The diameter of the drainpipe should be equal to or greater than the diameter of the connecting pipe.
●Keep the drain pipe short and incline downwards at a gradient of at least 1/100 to prevent air pockets.
(Refer to Fig.12)
●Use the attached drain hose ④and clamp ⑤.
●Insert the drain hose completely into the drain socket. Tighten the clamp within the range of gray tape
until the screw head is less than 4mm from the hose. (Refer to Fig.13,14)
●Wrap the attached sealing pad
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over the clamp and drain hose to insulate. (Refer to Fig.14)
●No folding of drain hose inside the indoor unit. (Refer to Fig.15)
B. Conrm that smooth drainage is achieved after the piping work.
● Pour 600cc of water into the drain pan from the air outlet for conrming drainage. (Refer to Fig.16)
Fig.12 Fig.13
Fig.14 Fig.15 Fig.16
3.6 Install the Connection Pipes
Connect the connect pipe with the two relative leading pipe, tie the nut on tie –in of the connect pipe
tightly.
Caution!
●Be careful in bending the connection pipes, or you will damage the pipes.

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Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
● If the tightening torque is too great in tightening the are nut, leakage will happen.
●The temperature of refrigerant circuit will be high ,please keep the interconnection away from the
copper tube.
3.7 Dial-up of Unit
The DC inverter unit of TOYOTOMI is provided with three dial-ups, i.e. address dial-up, capacity dial-up
and function dial-up. Adjust the function dial-up to set control, mode and function; Adjust the address dial-
up to set the corresponding relationship of indoor unit and wired controller; Adjust the capacity dial-up to set
capacity demand of indoor unit.
3.7.1 Function Dial-up
Caution!
Functional dial switch S7 is located on the mainboard of the indoor unit. It is operated when the user
need to change the default setting.
Functional dial switch S7
Dial-up Switch Functional Description:
Dial-up Setting
0 (ON Position) 1
1(S / R) Setting of memory mode Standby (S) Restore (R)
2(L / I) Setting of control mode Wired control (L) Remote control (I)
3(M / S) Setting of master / slave indoor unit Master indoor unit (M) Slave indoor unit (S)
4(I / O) Setting of ambient temperature
acquisition point Air inlet (I) Receiver (O)
5(L / H) Setting of high / low static pressure fan Low static pressure (L) High static(H)
Functional description of function dial-up:
Dial-up switch 1 (S/R):
Setting of memory mode, including the standby mode and restoration mode. The standby mode refers
to that the previous parameters will be kept but the unit will not run automatically after the power supply
is resumed. This setting is factory defaulted (dial-up switch pulled to “ON” position). For example, if the
parameters of an indoor unit set before power shutdown are High Fan and 24 , the unit will be under standby
state after the power supply is resumed and after the unit is manually started, the parameters will remain as
High Fan and 24 . The restoration mode refers to that not only the previous parameters will be kept, but also
that the unit can start automatically after the power supply is resumed. But if the unit is under STOP state
before power shutdown, it will be also under STOP state after the power supply is resumed.
Dial-up switch 2 (L/I):
Setting of control mode, including wired control and remote control. The wired control mode refers to that
the indoor unit is controlled from wired controller (hand controller). This setting is factory defaulted (dial-up
switch pulled to “ON” position). When the setting is wired control mode, the function dial-up on S7 for “setting
of memory mode” and “setting of master / slave indoor unit” will be disabled. These two settings can be done