Trust S Series User manual

TRUST AIR CONDITIONING EQUIPMENT CO.
Prepared By: Engineering & R & D Department.
Shiraz- May 2017
CONCEALED DUCT VRF INDOOR UNIT
(S SERIES)
TRUST AIR CONDITIONING EQUIPMENT CO.
Prepared By: Engineering & R & D Department.
Shiraz- May 2017

INSTALLATION MANUAL
Thank you very much for purchasing our air conditioner,
Before using your air conditioner , please read this manual carefully and keep it for future reference.
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Duct Type

CONTENTS PAGE
When installing the unit in a small room, take measures to
keep refrigerant concentration from exceeding allowable
safety limits in the event of refrigerant leakage. Contact the
place of purchase for more information. Excessive refrigerant in
a closed ambient can lead to oxygen deficiency.
Use the attached accessories parts and specified parts for
installation.
Otherwise, it will cause the set to fall, water leakage, electric
shocks, fire.
Install at a strong and firm location which is able to
withstand the set's weight.
If the strength is not enough or installation is not properly done,
the set will drop to cause injury.
The appliance must be installed 2.5m above floor.
The appliance shall not be installed in the laundry.
Before obtaining access to terminals, all supply circuits
must be disconnected.
The appliance must be positioned so that the plug is
accessible.
The enclosure of the appliance shall be marked by word, or
by symbols, with the direction of the fluid flow.
For electrical work, follow the local national wiring
standard, regulation and this installation instructions. An
independent circuit and single outlet must be used.
If electrical circuit capacity is not enough or defective in
electrical work, it will cause electrical shock fire.
Use the specified cable and connect tightly and clamp the
cable so that no external force will be acted on the
terminal.
If connection or fixing is not perfect, it will cause heat-up or fire
at the connection.
Wiring routing must be properly arranged so that control
board cover is fixed properly.
If control board cover is not fixed perfectly, it will cause heat-up
at connection point of terminal, fire or electric shocks.
If the supply cord is damaged, it must be replaced by the
manufacturer or its service agent or similarly qualified
person in order to avoid a hazard.
An all-poles disconnection switch having a contact
separation of at least 3mm in all poles should be
connected in fixed wiring.
When carrying out piping connection, take care not to let
air substances go into refrigeration cycle.
Otherwise, it will cause lower capacity, abnormal high pressure
in the refrigeration cycle, explosion and injury.
Do not modify the length of the power supply cord or use
extension cord, and do not share the single outlet with
other electrical appliances.
Otherwise, it will cause fire or electri shocks.
Carry out the specified installation work after taking into
account strong winds, typhoons or earthquakes.
Improper installation work may result in the equipment falling
and causing accidents.
If the refrigerant leaks during installation, ventilate the area
immediately.
Toxic gas may be produced if the refrigerant comes into the
place contacting with fire.
The temperature of refrigerant circuit will be high, please
keep the interconnection cable away from the copper tube.
Precautions before reading the Installation manual.
1. PRECAUTIONS
WARNING
WARNING
The safety precautions listed here are divided into two categories. In
either case, important safety information is listed which must be read
carefully.
After completing the installation, make sure that the unit operates
properly during the start-up operation. Please instruct the customer
on how to operate the unit and keep it maintained. Also, inform
customers that they should store this Installation manual along with
the owner's manual for future reference.
Be sure only trained and qualified service personnel to
install, repair or service the equipment.
Improper installation, repair, and maintenance may result in
electric shocks, short-circuit, leaks, fire or other damage to the
equipment.
Install according to this installation instructions strictly.
If installation is defective, it will cause water leakage, electrical
shock fire.
Failure to observe a warning may result in death.
CAUTION
Failure to observe a caution may result in injury or damage
to the equipment.
This Installation manual is for the indoor unit.
Refer to the indoor unit Installation manual for indoor parts
installation.
Please read the power source unit Installation manual to install
the power source unit.
Please refer to the refrigerant distributor Installation manual to
install the refrigerant distributor.
1
2
3
3
3
7
7
9
10
10
11
13
13
PRECAUTIONS.......................................................................................
INSTALLATION INFORMATION...............................................................
ACCESSORIES........................................................................................
INSPECTING AND HANDLING THE UNIT.................................................
INTDOOR UNIT INSTALLATION .............................................................
INSTALL THE CONNECTING PIPE...........................................................
REFRIGERANT PIPE CONNECTION.........................................................
CONNECT THE DRAIN PIPE....................................................................
MOTOR AND DRAIN PUMP MAINTENANCE............................................
WIRING................................................................................................
CONTROL OPERATION...........................................................................
ERROR CODE & INDICATION..................................................................
TEST OPERATION...................................................................................
1
Installation manual
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To install properly, please read this "installation manual" at
first.
The air conditioner must be installed by qualified persons.
When installing the indoor unit or its tubing, please follow
this manual as strictly as possible.
If the air conditioner is installed on a metal part of the
building, it must be electrically insulated according to the
relevant standards to electrical appliances.
When all the installation work is finished, please turn on
the power only after a thorough check.
Regret for no further announcement if there is any change
of this manual caused by product improvement.
2. INSTALLATION INFORMATION
Ground the air conditioner.
Do not connect the ground wire to gas or water pipes,
lightning rod or a telephone ground wire.Incomplete
grounding may result in electric shocks.
Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in
electric shocks.
Connect the outdoor unit wires , then connect the indoor
unit wires.
You are not allowed to connect the air conditioner with the
power source until wiring and piping the air conditioner is
done.
While following the instructions in this installation
manual, install drain piping in order to ensure proper
drainage and insulate piping in order to prevent
condensation.
Improper drain piping may result in water leakage and
property damage.
Install the indoor and outdoor units, power supply wiring
and connecting wires at least 1 meter away from
televisions or radios in order to prevent image
interference or noise.
Depending on the radio waves, a distance of 1 meter may not
be sufficient enough to eliminate the noise.
The appliance is not intended for use by young children
or infirm persons without supervision.
Don't install the air conditioner in the following locations:
There is petrolatum existing.
There is salty air surrounding (near the coast).
There is caustic gas (the sulfide, for example) existing in
the air (near a hot spring).
The Volt vibrates violently (in the factories).
In buses or cabinets.
In kitchen where it is full of oil gas.
There is strong electromagnetic wave existing.
There are inflammable materials or gas.
There is acid or alkaline liquid evaporating.
Avoid installing it in a narrow sapce which has a high
requirement to noise.
Other special conditions.
INSTALLATION ORDER
Select the location;
Install the indoor unit;
Install the outdoor unit;
Install the connecting pipe ;
Connect the drain pipe;
Wiring;
Test operation.
CAUTION
After completing the installation work, check that the
refrigerant does not leak.
Toxic gas may be produced if the refrigerant leaks into the room
and comes into contact with a source of fire, such as a fan
heater, stove or cooker.
The appliance shall be installed in accordance with
national wiring regulations.
An all-pole disconnection device which has at least 3mm
separation distance in all pole and a residual current
device(RCD)with the rating of above 10mA shall be
incorporated in the fixed wiring according to the national
rule.
The power cord type designation is H05RN-R/H07RN-F or
above.
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Installation manual

Cautions on wire controller installation
Never throw or beat the controller.
Before installation, operate the wire controller to determine its
location in a reception range.
Keep the wire controller at least 1m apart from the nearest TV
set or stereo equipment. (It is necessary to prevent image dis-
turbances or noise interferences.)
Do not install the wire controller in a place exposed to direct
sunlight or close to a heating source, such as a stove.Note that
the positive and negative poles are in right positions when
loading batteries.
The handling to the ceiling varies from the constructions, consult
the construction personnels for the specific procedures.
The size of the ceiling to be handled ... ... do keep the ceiling
flat. Consolidate the roof beam for possible vibration.
Cut off the roof beam.
Strengthen the place cut off, and consolidate the roof beam.
Carry out the pipe and line operation in the ceiling after
finishing the installation of the main body. While choosing where
to start the operation, determine the direction of the pipes to be
drawn out. Especially in case there is a ceiling, position the
refrigerant pipes, drain pipes, indoor & outdoor lines to the
connection places before hanging up the machine.
The installation of hanging screw bolts.
●
●
●
●
●
Put the square timber traversely ove r the ro of beam, then
install the hanging screw bolts. (Refer to Fig.5-3 )
5.2 Wooden construction
Please refer to the following figure for the distance
measurement between the screw bolts.
Please install with Φ10 hanging screw bolts.
5.1 Installation Φ10 Hanging Screw Bolts (4 Bolts)
●
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3. ACCESSORIES
Table.3-1
1
1
Name of
Accessories
Installation manual
Wire controller
Pipe insulation material Heat insulation
Q‘ty
2
(This manual)
Outline Usage
Wire control the
air-conditioner
4. INSPECTING AND HANDLING THE UNIT
At delivery, the package should be checked and any damage should
be reported immediately to the service agent.
When handling the unit, take into account the following:
Fragile, handle the unit with care.
Choose on before hand the path along which the unit is to be
brought in.
Move this unit as original package as possible.
When lifting the unit , always use protectors to prevent belt
damage and pay attention to the position of the unit’s centre
of gravity.
1
2
3
4
5. INDOOR UNIT INSTALLATION
Confirm that there is enough room for installation and mainte-
nance.
Fig.5-1
Maintenance roomage
Maintenance roomage
checking orifice
500mm or more
600mmX600mm
600mm or more
Fig.5-2
checking orifice
Confirm the minimum
drain tilt is 1/100 or more
Clasp
1
1
Water outlet joint For drainage
Chucking the joint which
connect the drain hose
and the outlet of indoor
unit
Copper nut 1
Use for pipe
connection of
engineering installation
Display box
1
Fig.5-3
Hanging screw bolts
Ceiling
Timber over the beam
Roof beam
Operation and fault display
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Installation manual

5.3 New concrete bricks
5.4 For original concrete bricks
Fig.5-4
Inlaying or embedding the screw bolts (refer to Fig.5-4)
Blade shape insertion Slide insertion
Use embedding screw bolt, crock and stick harmless (refer
to Fig.5-5)
Fig.5-5
Steel bar
Embedding screw bolt
(Pipe hanging and embedding screw bolt)
Fig.5-7
5.6 Overhanging the indoor unit
(1) Overhang the indoor unit onto the hanging screw bolts with
block.
(2) Position the indoor unit in a flat level by using the level
indicator, unless it may cause leakage.
Screw nut
Washer
Hanging
screw bolt
Overhang part
(1) Install the dust proof net according to the installation manual;
(2) Install the canvas air passage underneath the dust proof net.
5.7 Installing the dust proof net and canvas air
passage
Shockproof cushion
5.8 Duct Design
(1) Air inlet and air outlet duct should be apart far enough to
prevent air outlet entering air Inlet.
(2) There is dust filter on the indoor unit.
Recommended duct connection
Canvas tie-in Canvas tie-in
Air outlet
Isolation booth
Isolation booth
checking orifice
Air inlet
Air dust filter
Do not put the connecting duct weight on the indoor unit.
1.
When connecting duct, use inflammable canvas tie-in to prevent
vibrating.
2.
When connecting duct, install in place prone to takedown for
maintenance.
3.
Change the fan motor static pressure corresponding to external
duct static pressure.
4.
If installed in place like meeting room where noise is easy to be
perceived, design isolation booth and internal duct underlayer to
muffle the duct system and weaken the air encounter noise in the
duct.
5.
Fig.5-8
NOTE
5.5 Steel roof beam structure
Fig.5-6
Hanging screw bolt
Hanging bolts
Supporting
Install and use directly the supporting angle steel. (refer to
Fig.5-6)
angle steel
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Installation manual
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The positioning of ceiling hole and indoor unit and hanging screw bolts
routine method of installation: the size of installation for indoor unit following the Fig.5-9
■
Table.5-1
Model(W)
Size of copper pipe A(Liquid side) Φ6.4
Φ12.7
Φ9.5
Φ15.9
Refrigerant
R410A
B(Gas side)
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Installation manual

Fig.5-9
Unit: mm
/
.
Air filter
Electric control cabinet
0
1
Electric control cabinet
%
) (
$
* +
Outline dimension and air outlet opening size
Air return opening size
Position size of descensional ventilation opening
Size of mounted lug
&
'
New air inlet
Φ92
Mode(W) A B C D E F G H I J K L M N
700 210 450 500 512 45 145 17 600 196 600 196 740 350
920 210 450 500 732 45 145 17 820 200 820 200 960 350
1140 210 450 500 950 45 145 17 1040 200 1040 200
1180 350
1500~3600
4500~5600
7100

-
,
Air filter
B
A
1500~4500 5600~7100
Unit: mm

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Installation manual
NOTE
All the pictures in this manual are for explanation purpose only. They may be slightly different from the air conditioner you purchased
(depend on model).The actual shape shall prevail.
Fig.5-10
1. 2.
■
Take off air filter, ventilation panel and air return flange. Install ventilation panel,air return flange and
air filter .
How to adjust the air ventilated direction? (From rear ventilated adjust it to descensional.)
Air filter
Air return flange
Ventilation panel
Air filter
Ventilation panel
Air return flange
5.9 Fan performances
Static pressure curve
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)
aP(
erus
s
er
p
c
i
t
a
ts
l
a
nr
e
txE
)
aP(
eruss
er
p
c
i
t
a
tsl
a
nr
e
txE
Low speed
Low speed
Medium speed
Medium speed
Supper High speed(reserved)
Supper High speed(reserved)
High speed
High speed
Low speed
Medium speed
Supper High speed(reserved)
High speed
)
aP(
eruss
er
p
c
i
t
a
tsl
a
nr
e
txE
Fig.5-11
Fig.5-13
Fig.5-14
)
aP(
eruss
er
p
c
i
t
a
tsl
a
nr
et
xE
Medium speed
Low speed
Supper High speed(reserved)
High speed
4.5KW~5.6KW
2.2KW~2.8KW
7.1KW
Fig.5-12
3.6KW

Connect the indoor unit at first, then the outdoor unit.
Bend the tubing in proper way. Dont harm them.
Daub the surfaces of the flare pipe and the joint nuts with frozen
oil, and wrench it for 3~4rounds with hands before fasten the
flare nuts. (Refer to Fig.6-1)
Be sure to use two wrenches simultaneously when you connect
or disconnect the pipes.
The stop valve of the outdoor unit should be closed absolutely
●
Ĺ
●
ķ
ĸ
6. INSTALL THE CONNECTING PIPE
Check whether the height drop between the indoor unit and
outdoor unit, the length of refrigerant pipe, and the number of the
bends meet the following requirements:
The max height drop and The length of refrigerant pipe deponding
on the ouotdoor unit.(If the height drop is more than 10m, you
had better put the outdoor unit over above the indoor unit.)
The number bends fewer than 15
Do not let air, dust, or other impurities fall in the pipe system
during the time of installation.
The connecting pipe should not be installed until the indoor and
outdoor units have been fixed already.
Keep the connecting pipe dry, and do not let moisture in during
installation.
The Procedure of Connecting Pipes
Measure the necessary length of the connecting pipe, and make
it by the following way.
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7. REFRIGERANT PIPE CONNECTION
7.1 Expel The Air
●
●
Flaring
Cut a pipe with a pipe cutter.
Insert a flare nut into a pipe and flare the pipe.
Fig.7-1

Lean crude burr
Fig.6-1
Use frozen oil
Bend the pipe with thumb
Make the ends
straight
Fig.6-3
Fig.6-2
Locate The Pipe
Drill a hole in the wall (suitable just for the size of the wall conduit,
90mm in general), then set on the fittings such as the wall conduit
and its cover.
Bind the connecting pipe and the cables together tightly with
binding tapes. Do not let air in, which will cause water leakage
by condensation.
Pass the bound connecting pipe through the wall conduit from
outside. Be careful of the pipe all ocation to do no damage to the
tubing.
Connect the pipes.
Then,openthestemofstopvalvesoftheoutdoorunittomakethere-
●
●
●
frigerant pipe connecting the indoor unit with the outdoor unit
fluently flow.
Be sure of no leakage by checking it with leak detector or soap
water.
Cover the joint of the connecting pipe to the indoor unit with the
sound proof/insulating sheath (fittings), and bind it well with the
tapes to prevent leakage.
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(as original state). Every time you connect it, first loosen the nuts
at the part of stop valve, then connect the flare pipe immediately
(in 5 minutes). If the nuts have been loosened for a long time,
dusts and other impurities may enter the pipe system and may
cause malfunction later. So please expel the air out of the pipe
with refrigerant before connection.
Expeltheair(refertothe“ExpelTheAir”)afterconnectingtherefriger-
ant pipe with the indoor unit and the outdoor unit.Then fasten the
nuts at the repair-points.
Notices For Benable pipe.
The bending angle should not exceed 90°C
Bending position is preferably in the bendable pipe. The larger
the better it is .
Do not bend the pipe more than three times.
Bend the connecting pipe of small wall thickness.
Cut out a desired concave at the bending part of the insulating
pipe.
Then expose the pipe(cover it with tapes after bending).
To prevent collapsing of deforming, please bend the pipe at its
biggest radius.
Use bender to get a small radius pipes.
Use the market brass pipe.
Be sure to use the same insulating materials when you buy the
brass pipe. (More than 9mm thick).
7
Installation manual

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The necessary filling amount of refrigerant
Refrigerant volume to be added is calculated according to
outdoor unit installation manual .Be sure to add refrigerant
measuring by a scale. L: The length of the pipe
Please record the quantity added and store it carefully for future
maintenance.
Expel the air with a vacuum pump (Refer to
Fig.7-4 ) (Please
refer to its manual for the way of using manifold valve)
Loosen and remove the maintenance nuts of stop valves A and
B,andconnectthechargehoseofthemanifoldvalvewiththemain-
tenance terminator of stop valve A. (Be sure that stop valves
A and B are both closed)
Connect the joint of the charge hose with the vacuum pump.
Open the Lo-lever of the manifold valve completely.
Fig.7-2
R0.4~0.8
45
°
±
2
90
°
± 4
A
●
●
Fasten the nut
Put the connecting tubing at the proper position, wrench the
nuts with hands then fasten it with a wrench. (Refer to
Fig.7-3 )
Too large torque will harm the bellmouthing and too small will
cause leakage. Please determine the torque according to
Table.7-2.
Fig.7-3
●
Turn on the vacuum pump. At the beginning of pumping, loosen
the maintenance terminator nut of stop valve B a little to check
whether the air comes in (the sound of the pump changes, and
the indicator of compound meter turns below zero). Then fasten
the nut.
When the pumping has finished, close the Lo-lever of the
manifold valve completely and turn off the vacuum pump.
When you have pumped for over 15 minutes, please confirm
that the indicator of multimeter is on -1.0X105Pa (-76cmHg)
Loosen and remove the quadrangle cover of stop valves A
and B to open stop valve A and B completely, then fasten
them.
Disassemble the charge hose from the repair-mouth of stop
valve A, and fasten the nut.
●
●
●
●
All the stop valves should be opened before test operation.
Each air conditioner has two stop valves of different sizes on
the side of the outdoor unit which operate as Lo-stop value,
respectively. (Refer to
Fig.7-5 )
-76 cmHg
Lo-lever Hi-lever
Charge hose Charge hose
Vacuum pump
Lo-lever
Manifold valve
Multi-meter Pressure meter
Flare nut
Stopper
Cap
Valve body
Valve stem
Fig.7-4
Fig.7-5
Check all the joints with the leak detector or soap water. (See
Fig.7-6 as a reference illustration)
7.2 Check The Leakage
B A
D C
Check-point of indoor unit
Check-point of outdoor unit
A......Lo-stop valve B......Hi-stop valve
C,D..Joints of the connecting pipe to the indoor unit.
Fig.7-6
8
Installation manual
Outside diameter
A(mm)
Max
8.7Φ6.4mm
Φ9.5mm 12.4
8.3
12.0
Φ12.7mm 15.8 15.4
Min
Table.7-1
Φ15.9mm 19.0 18.6
Table.7-2
TorqueTubing size
14.2~17.2 N.m (144~176 kgf.cm)
32.7~39.9 N.m (333~407 kgf.cm)
Φ6.4mm
Φ9.5mm
49.5~60.3 N.m (504~616 kgf.cm)
Φ12.7mm
61.8~75.4 N.m (630~770 kgf.cm)
Φ15.9mm