Tosot TM09HSFDI User manual

Preface
For correct installation and operation, please read all instructions carefully. Before reading the
instructions, please be aware of the following items:
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
This mark indicates procedures which, if improperly performed, might lead to the death
or serious injury of the user.
This mark indicates procedures which, if improperly performed, might possibly result in
personal harm to the user, or damage to property.
NOTICE is used to address practices not related to personal injury.
(1) Instructions for installation and use of this product are provided by the manufacturer.
(2) Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel only.
(3) For the safe operation of this unit, please read and follow the instructions carefully.
(4) During operation, total capacity of indoor units should not exceed the total capacity of outdoor units. otherwise, poor
effect of cooling or heating may result.
(5) Direct operators or maintainers should well keep this manual.
(6) If this unit fails to operate normally, please contact our service center as soon as possible and provide the following
information:
1) Content on the nameplate(model number,cooling capacity,production code,ex-factory date.
2) Malfunction details(before and after the malfunction occurs.
(7) Each unit has been strictly tested and proved to be qualified before ex-factory. In order to prevent units from being
damaged or operating normally because of improper disassembly, please do not disassemble the unit by yourself. If
you need to disassemble and check units, please contact our service center. We will send specialists to guide the
disassembly.
(8) Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel only.
User Notice
● This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.Children should be supervised to ensure that they do
not play with the appliance.
● DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such
waste separately for special treatment is necessary.

Contents
1 Safety Precautions ............................................................................................................. 1
2 Product Introduction ........................................................................................................... 3
2.1 Names of Key Components................................................................................................ 3
2.2 Rated Working Condition .................................................................................................... 3
3 Preparations for Installation................................................................................................ 3
3.1 Standard Fittings ................................................................................................................. 3
3.2 Location for Installation ....................................................................................................... 4
3.3 Wiring Requirements........................................................................................................... 5
4 Installation Instructions ....................................................................................................... 6
4.1 Installation of Indoor Unit .................................................................................................... 6
4.2 Refrigerant Pipe Connection............................................................................................. . 8..
4.3 Drainage Pipe Installation and Drainage System Testing ............................................... .. 9.
4.4 Installation of Air Duct ....................................................................................................... 12
4.5 Installation of Wired Controller.......................................................................................... 15
5 Wiring Work.......................................................................................................................15
5.1 Connection of Wire and Patch Board Terminal................................................................. 15
5.2Power Cord Connection .................................................................................................... 16
5.3 Connect Communication Wire of Wired Controller........................................................... 17
6 Setting of External Static Pressure ....................................................................................18
7 Routine Maintenance.........................................................................................................18
7.1 Cleaning of Filter............................................................................................................... 18
7.2 Maintenance before the Seasonal Use ............................................................................ 18
7.3 Maintenance after the Seasonal Use................................................................................ 19
8 Table of Error Codes for Indoor Unit..................................................................................19
9 Troubleshooting.................................................................................................................20

Multi Variable Air Conditioners Ducted Type Indoor Unit
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1 Safety Precautions
(1) Follow this instruction to complete the installation work. Please carefully read this manual before unit startup
and service.
(2) Wire size of power cord should be large enough.The damaged power cord and connection wire should be
replaced by exclusive cable.
(3) After connecting the power cord, please fix the electric box cover properly in order to avoid accident.
(4) Never fail to comply with the nitrigen charge requirements.Charge nitrogen when welding pipes.
(5) Never short-circiut or cancel the pressure switch to prevent unit damage.
(6) Please firstly connect the wired controller before energization, otherwise wired controller can not be used.
(7) Before using the unit, please check if the piping and wiring are correct to avoid water leakage, refrigerant
leakage, electric shock, or fire etc..
(8) Do not insert fingers or objects into air outlet/inlet grille.
(9) Open the door and window and keep good ventilation in the room to avoid oxygen deficit when the gas/oil
supplied heating equipment is used.
(10) Never start up or shut off the air conditioner by means of directly plug or unplug the power cord.
(11) Turn off the unit after it runs at least five minutes; otherwise it will influence oil return of the compressor.
(12) Do not allow children operate this unit.
(13) Do not operate this unit with wet hands.
(14) Turn off the unit or cut off the power supply before cleaning the unit, otherwise electric shock or injury may
happen.
(15) Never spray or flush water towards unit, otherwise malfunction or electric shock may happen.
(16) Do not expose the unit to the moist or corrosive circumstances.
(17) Under cooling mode, please don't set the room temperature too low and keep the temperature difference
between indoor and outdoor unit within 5℃(41℉).
(18) User is not allowed to repair the unit. Fault service may cause electric shock or fire accidents. Please
contact TOSOT
appointed service center for help.
(19) Before installation, please check if the power supply is in accordance with the requirements specified on the
nameplate. And also take care of the power safety.
(20) Installation should be conducted by dealer or qualified personnel. Please do not attempt to install the unit by
yourself. Improper handling may result in water leakage, electric shock or fire disaster etc..
(21) Be sure to use the exclusive accessory and part to prevent the water leakage, electric shock and fire
accidents.
(22) Make sure the unit can be earthed properly and soundly after plugging into the socket so as to avoid electric
shock. Please do not connect the ground wire to gas pipe, water pipe, lightning rod or telephone line.
(23) Electrify the unit 8 hours before operation. Please switch on for 8 hours before operation. Do not cut off the
power when 24 hours short-time halting (to protect the compressor).
(24) If refrigerant leakage happens during installation, please ventilate immediately. Poisonous gas will emerge
if the refrigerant gas meets fire.
(25) Volatile liquid, such as diluent or gas will damage the unit appearance.Only use soft cloth with a little neutral

Multi Variable Air Conditioners Ducted Type Indoor Unit
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detergent to clean the outer casing of unit.
(26) If anything abnormal happens (such as burning smell), please power off the unit and cut off the main power
supply, and then immerdiately contact
TOSOT
appointed service center.If abnormality keeps going, the unit
might
be damaged and lead to electric shock or fire.
Any personal injury or property loss caused by improper installation, improper debug,
unnecessary repair or not following the instructions of this manual should not be the responsibility
of the local TOSOT agent.

Multi Variable Air Conditioners Ducted Type Indoor Unit
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2 Product Introduction
2.1 Names of Key Components
Fig 2.1.1
2.2 Rated Working Condition
Indoor Side Condition
Outdoor Side Condition
Dry Bulb Temp °C(℉)
Wet Bulb Temp °C(℉)
Dry Bulb Temp℃(℉)
Wet Bulb Temp℃(℉)
Rated Cooling
26.7(80.0)
19.4(67.0)
35(95.0)
23.9(75.0)
Rated Heating
21.1(70.0)
15.6(60.0)
8.3(47.0)
6.1(43.0)
3 Preparations for Installation
NOTICE!
Product graphics are only for reference. Please refer to actual products. Unspecified measure
unit is mm(in.).
3.1 Standard Fittings
Please use the supplied standard fittings listed below as instructed.
No.
Name
Appearance
Q'ty
Usage
1
Wired Controller
1
To control the indoor unit
2
Drain Hose Assembly
1
To connect with the hard PVC drain pipe
3
Special Nut
1
To be used for connecting the refrigerant
pipe
4
M10X8 Nut with Washer
4
To be used together with the hanger bolt for
installing the unit.
5
M10 Nut (M10X8.4 Nut)
4
To be used together with the hanger bolt for
installing the unit.
NO.
1
2
3
4
5
6
7
8
Name
Drain
Pipe
Control
box
Pothook
Gas
pipe
Liquid
pipe
Air-return
Opening
Air
Outlet
Filter

Multi Variable Air Conditioners Ducted Type Indoor Unit
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No. Name Appearance Q'ty Usage
6M10 Washer (Spring Washer
M10X2.6) 4To be used together with the hanger bolt for installing the unit.
7 Insulation 1 To insulate the gas pipe
8 Insulation 1 To insulate the liquid pipe
9 Sponge 2 To insulate the drain pipe
10 Fastener 8 To fasten the sponge
3.2 Location for Installation
(1)The appliance shall not be installed in the laundry.
(2)The top holder must be strong enough to support unit’s weight.
(3)Drain pipe can drain water out easily.
(4)There is no obstacle at inlet or outlet. Please ensure good air circulation.
(5)In order to make sure the space for maintenance, please install the indoor unit according
to the dimension described below.
(6)Keep the unit away from heating source, inflammable gas or smoke.
(7)This is a concealed ceiling type unit.
(8)Indoor unit, outdoor unit, power cord and electric wire should stay at least 1m(39-3/8 in.)
from the TV set and radio. Otherwise, these electrical appliances may have image
interference and noise. (Even if the distance is 1m(39-3/8 in.), when there is strong
electric wave, noise may still occur.)
Unit: mm(in.)
Fig 3.2.1

Multi Variable Air Conditioners Ducted Type Indoor Unit
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(1) Installation of the unit must be in accordance with National Electric Codes and local
regulations.
(2) Improper installation will affect unit’s performance, so do not install the unit by yourself.
Please contact local dealer to arrange professional technicians for the installation.
(3) Do not connect power until all installation work is finished.
3.3 Wiring Requirements
(1)Power Cord Size and Air Switch Capacity
(1) Use copper wire only as unit’s power cord. Operating temperature should be within it
value.
(2) If the power cord is more than 15m (49-1/4 ft.) long, please increase properly the sectional
area of power cord to avoid overload, which may cause accident.
(3) Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at
40°C(104°F) Cambient temperature when laying across plastic pipe. Air switch is D type and
used at 40°C(104°F). If actual installation condition varies, please lower the capacity
appropriately according to the specifications of power cord and air switch provided by
manufacturer.
(4) Install cut-off device near the unit. The minimum distance between each stage of cut-off
device should be 3mm(1/8 in.) (The same for both indoor unit and outdoor unit).
Model Power SupplyFuse
Capacity(A)
TM09HSFDI
TM12HSFDI
TM18HSFDI
TM21HSFDI
TM24HSFDI
208/230V-1ph-60Hz
5
5
5
5
5

Multi Variable Air Conditioners Ducted Type Indoor Unit
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4 Installation Instructions
NOTICE!
These duct type indoor units are limited to be installed for one room.
4.1 Installation of Indoor Unit
4.1.1 Outline Dimension and Installation Spots
Equip with a inspection hatch after lifting the unit. For the convenience of maintenance, the
service port should be on one side of the electric box and below unit’s lower level.
Fig 4.1.1
Below are dimensions of A, B, C, etc. for different models:
Unit:mm(in.)
Model A B C D E F G
740
(29-1/8)
500
(19-11/16)
830
(32-11/16)
300
(11-13/16)
754
(29-11/16)
700
(27-9/16)
700
(27-9/16)
1040
(40-15/16)
500
(19-11/16)
1130
(44-1/2)
300
(11-13/16)
754
(29-11/16)
1000
(39-3/8)
700
(27-9/16)
TM09HSFDI
TM12HSFDI
TM18HSFDI
TM21HSFDI
TM24HSFDI

Multi Variable Air Conditioners Ducted Type Indoor Unit
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4.1.2 Suspend the indoor unit
(1) Drill bolt holes and install bolts
1) Stick the reference cardboard on the installation position; drill 4 holes according to the
hole site on the cardboard as shown in fig 4.1.3; diameter of drilling hole is according
to the diameter of expansion bolt and the depth is 60-70mm(2-3/8~2-3/4 in.), as
shown in fig 4.1.4.
Unit: mm(in.)
Fig 4.1.3 Fig 4.1.4
2) Insert the M10 expansion bolt into the hole and then knock the nail into the bolt, as
shown in fig 4.1.5, and then remove the paper pattern.
NOTICE!
The length of bolt depends on the installation height of the unit, bolts are field supplied.
Fig 4.1.5
(2) Install the indoor unit temporarily
Assemble suspension bolt on the expansion bolt, attach the hanger bracket to the suspension
bolt. Be sure to fix it securely by using a nut and washer from upper and lower sides of the hanger
bracket. The washer fixing plate will prevent the washer from falling.
7009 ~ 24+6)', are as follows：
Fig 4.1.6

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NOTICE!
1) Before operation, please prepare all pipelines (connection pipe, drainage hose) and
wires (connection wire for wired controller, connection wire for indoor unit).
2) When drilling holes on ceiling (air return outlet or air outlet), you can need to reinforce
the ceiling to prevent vibration. For detailes, please consult user or builder.
3) If the strength of the ceiling is not good, please install a beam bracket, andthen put
the unit on the beam bracket.
(3) Adjust the unit to the right position.
(4) Check the level of the unit
After the indoor unit is installed, remember to check the horizontal status of the whole unit. It
should be horizontal from front to back and slant 1% from left to right, following the drainage
direction.
Fig 4.1.8
(5)Remove the washer locating plate and then tighten the nut on it.
4.2 Refrigerant Pipe Connection
(1) Aim the flaring port of copper pipe at the center of screwed joint and then tighten the
flaring nut with hand as shown in fig 4.2.1.
(2) Tighten the flaring nut with torque wrench.
Fig 4.2.1
(3) Use pipe bend when bending the pipe and the bending angle should not be too small.
(4) Wrap the connection pipe and joint with sponge and then tie them firmly with tape.
Torque for tightening nut
Pipe diameter
mm(in.) Torque(N·m)
Φ6.35(1/4) 15～30
Φ9.52(3/8) 35～40
Φ12.7(1/2) 45～50
Φ15.9(5/8) 60～65
Φ19.05(3/4) 70～75

Multi Variable Air Conditioners Ducted Type Indoor Unit
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4.3 Drainage Pipe Installation and Drainage System Testing
4.3.1 Notice for Installation of Drain Pipe
(1) The drainage pipe should be short and the gradient downwards should be at least
1%~2% in order to drain condensation water smoothly.
(2) The diameter of drainage hose should be bigger or equal to the diameter of drainage pipe
joint.
(3) Install drainage pipe according to the following fig and arrange insulation to the drainage
pipe (Fig 4.3.1). Improper installation may lead to water leakage and damp the furniture
and other things in the room.
(4) You can buy normal hard PVC pipe used as the drainage pipe. During connection, insert
the end of PVC pipe into the drainage hole and then tighten it with drainage hole and wire
binder. Can’ t connect the drainage hole and drainage hole with glue.
(5) When the drainage pipelines are used for several units, the position of pipeline should be
about 100mm(4in.) lower than the drainage port of each unit. In this case, thicker pipes
should be applied.
Fig 4.3.1
4.3.2 Drainage pipe installation
(1) Insert the drain hose into the drain hole and tighten it with tapes, as shown in Fig 4.3.2.
(2) Tighten the pipe clamp, with the distance between screw nut and hose smaller than
4mm(1/8in.).
①metal clamp(accessory)
②drain hose(accessory)
(3) Use sealing plate to make the pipe clamp and hose insulated, as shown in Fig.4.3.3.
①metal clamp(accessory)
②thermal sponge(accessory)
Unit: mm(in.)
Fig 4.3.2 Fig 4.3.3
(4) When connecting several drain pipes, follow the instruction as indicated in Fig 4.3.4.
Choose the drain collecting pipe that matches with unit capacity. Unit: mm(in.)
Fig 4.3.4

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(5) Install the trap as shown in following Fig 4.3.5.
(6) Install one trap for each unit.
(7) Convenience for cleaning trap in the future should be considered when installing it.
Fig 4.3.5
(8) The horizontal pipe can be connected to vertical pipe in the same level; please select
the connection way as shown in following fig.
NO1: Connection of drainage pipe joints (Fig4.3.6)
NO2: Connection of downspout elbow (Fig4.3.7)
NO3: Inserting pipe connection (Fig4.3.8)
Fig 4.3.6 Fig 4.3.7 Fig 4.3.8
(9) The installation height of raising pipe for drainage should be lower thanB. The gradient
from raising pipe towards drainage direction should be at least 1%~2%. If the raising
pipe is vertical with the unit, the raising height should be less than C.
Unit: mm(in.)
Fig 4.3.9

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Model A B C
150（5-7/8）850（33-1/2）800（31-1/2）
(10) Drain pipes should have a downward slope of at least 1%~2%, in order to prevent pipes
from sagging, install hanger bracket at intervals of 1000~1500mm(39-3/8~59 in.).
Unit: mm(in.)
Fig 4.3.10
4.3.3 Test of Drainage System
◆Models with water pump
(1) Please test drainage system after electric work is finished.
Inject approximately 1L purified water to drain pan from air vent, ensure that not to splash
the water over the electrical components (e.g. water pump. etc.).
1) Spray 1L water on evaporator with sprayer.
2) In case of commissioning finished, please energize the IDUs and switch to cooling or dry
mode, meanwhile, the water pump operates, you can check the draining through the
transparent part of drain socket.
3) If communication wire is not connected, communication malfunction “E6” will occur after
3min of energizing. In this case, the water pump operates automatically. Check if the
water pump drains normally drains normally through drainage port. The water pump will
stop automatically after running for 1min.
(2) During the test, please carefully check the drainage joint, make sure no any leakage
occur.
(3) It is strongly recommend to do the drain test before ceiling decoration.
◆Models without water pump
(1) Inject some water to the water tray of indoor unit as following:
TM09HSFDI
TM12HSFDI
TM18HSFDI
TM21HSFDI
TM24HSFDI

Multi Variable Air Conditioners Ducted Type Indoor Unit
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1) Connect the drain hose to the other drain connection pipe of water tray and inject
approximately 1L water. (Remove the drain hose after finishing testing and then put on
the plug of water tray.)
2) Spray 1L water on evaporator with sprayer.
Fig 4.3.11
(2) Check if the water drains smoothly from the drain pipe and check if there is water leakage
on the connection pipe.
(3) Arrange insulation of drain hose and pipe clamp after checking the drain system.
4.4 Installation of Air Duct
NOTICE!
① There should be insulating layer on air-out duct, air-return duct and fresh air duct to
avoid heat loss and moisture. Adhere a nail on the air duct and then add thermal
sponge with a layer of tin. Fasten it with a nail cover and then seal the junction with tin
tapes. You can also use other materials that have good insulation quality.
② Each air-out duct and air-return duct should be fixed on a pre-made board with iron
frame. The junction of air duct should be well-sealed in order to prevent air leakage.
③ The design and construction of air duct should comply with national requirements.
④ The edge of air-return duct is suggested to be more than 150mm(5-7/8 in.) away from
the wall. Add a filter to the air-return opening.
⑤ Please consider noise-damping and vibration damping for the design and construction
of air duct. Besides, noise source must be away from people. For instance, do not have
the air-return opening installed on top of the user (Offices, rest area, etc.).

Multi Variable Air Conditioners Ducted Type Indoor Unit
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4.4.1 Shape and Size of Air Outlet and Air-return Opening
Unit: mm(in.)
Fig 4.4.1 Air Outlet
Fig 4.4.2 Air-return Opening
Model
Size of Air Outlet Size of Air-return Opening
A B C D E F
195
(7-5/8)
451
(17-3/4)
25
(1)
264
(10-3/8)
660
(26)
29
(1-1/8)
TM09HSFDI
TM12HSFDI
TM18HSFDI
TM21HSFDI
TM24HSFDI
195
(7-5/8)
751
(29-9/16)
25
(1)
264
(10-3/8)
960
(37-3/4)
29
(1-1/8)
4.4.2 Installation of Air-out Duct
Fig 4.4.5

Multi Variable Air Conditioners Ducted Type Indoor Unit
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No.
Name
No.
Name
1
Hanger Rod
5
Static Pressure Box
2
Return Air Duct
6
Filter
3
Canvas Duct
7
Main Supply Air Duct
4
Return Air Inlet
8
Supply Air Outlet
4.4.3 Installation of the Return Air Duct
(1) The default installation location of the rectangular flange is at the back and the return air
cover plate is at the bottom, as shown in Fig 4.4.6.
Fig 4.4.6
(2) If the bottom return air is desired, just change the place of the rectangular flange and the
return air cover plate.
(3) Connect one end of the return air duct to the return air outlet of the unit by rivets and the
other to the return air louver. For the sake of the convenience to freely adjust the height, a
cutting of canvas duct will be helpful, which can be reinforced and folded by 8# iron wire.
(4) More noise is likely to be produced in the bottom return air mode than the rear return air
mode, so it is suggestive to install a silencer and a static pressure box to minimize the
noise.
(5) The installation method can be choosen with considering the conditions of the building and
maintenance etc., as shown in Fig 4.4.7.
Fig 4.4.7
Table 5 Installation of the return air duct
No.
Name
No.
Name
1
Return Air Inlet (with filter)
4
Indoor unit
2
Canvas Duct
5
Supply Air Duct
3
Return Air Duct
6
Grille
4.4.4 Installation of the Fresh Air Pipe
(1) When the fresh air pipe is needed to be connected, cut the fresh air baffle as Fig 4.4.8.

Multi Variable Air Conditioners Ducted Type Indoor Unit
15
Plug up the gap of the fresh air baffle by sponge if the fresh air duct is not be used.
(2) Install the round flange so that the fresh air duct can be connected as Fig 4.4.9.
(3) Sealing and heat preservation should be done for both the air pipe and round flange pipe.
(4) Fresh air should be treated via the air filter.
Fig 4.4.8 Fig 4.4.9
4.5 Installation of Wired Controller
Please refer to User Manual of Wired Controller for the installation details.
NOTICE! When installation is finished, the unit must be tested and debugged before operation.
Please refer to Instruction Manual of ODU for auto addressing and debugging details.
5 Wiring Work
Before obtaining access to terminals, all supply circuits must be disconnected.
(1) Units must be earthed securely, or it may cause electric shock.
(2) Please carefully read the wiring diagram before carry out the wiring work, incorrect wiring
could cause malfunction or even damage the unit.
(3) The unit should be powered by independent circuit and specific socket.
(4) The wiring should be in accordance with related regulations in order to ensure the units
reliable running.
(5) Install circuit breaker for branch circuit according to related regulations and electrical
standards.
(6) Keep cable away from refrigerant pipings, compressor and fan motor.
(7) The communication wires should be separated from power cord and connection wire
between indoor unit
(8) Adjust the static pressure via wired controller according to site circumstance.
5.1 Connection of Wire and Patch Board Terminal
(1) The connection of wire (as shown in fig 5.1.1)
1) Strip about 25mm(1 in.) insulation of the wire end by stripping and cutting tool.
2) Remove the wiring screws on the terminal board.

Multi Variable Air Conditioners Ducted Type Indoor Unit
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3) Shape the tail of wire into ring by needle nose plier, and keep the gauge of ring in
accordance with screw.
4) Use the screwdriver for tightening the terminal.
(2) The connection of stranded wire (as shown in fig 5.1.2)
1) Strip about 10mm (3/8 in.) insulation of the end of stranded wire by stripping and cutting
tool.
2) Loosen the wiring screws on terminal board.
3) Insert the wire into the ring tongue terminal and tighten by crimping tool.
4) Use the screwdriver for tightening the terminal.
Unit: mm(in.)
Fig 5.1.1 Fig 5.1.2
5.2 Power Cord Connection
NOTICE!
①Every unit should be equipped with a circuit breaker for short-circuit and overload
protection.
②During operation, all indoor units connected to the same outdoor unit system must be
kept energized status. Otherwise, the unit can’t operate normally.
Fig 5.2.1
NOTICE!
Indoor unit quantity n is according to the outdoor unit capacity.
Outdoor unit connection
N(1) 2 3
red
(brown)
black green
(yellow-
green)
white
(blue)

Multi Variable Air Conditioners Ducted Type Indoor Unit
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●For units with single-phase power supply.
(1) Detach the electric box lid.
(2) Let the power cord pass through the wiring through-holes.
(3) Fix the power card with wiring clamp.
(4) The wire diameter of power cord can’ t be less than 18AWG.
5.3 Wiring of the Signal Line of the Wired Controller
(1) Open the cover of the electric box of the indoor unit.
(2) Let the signal line go through the rubber ring.
(3) Insert the signal line tothe four-pin socket on the printed circuit board of the indoor unit.
(4) Fix the signal line with the binding wire.