Impecca ISMI-C15 User manual

Flex Series R410A GMV Multi
VFR System-Indoor Unit (For
North America) Compact Panel
Cassette Type Indoor Unit

Thank you for choosing Air Conditioners, please read this owner’s manual carefully before operation
and retain it for future reference. If you have lost the Owner’s Manual, please contact the local agent or
visit www.Impecca.com for an electronic version.

Impecca reserves the right to interpret this manual which will be subject to any change due to
product improvement without further notice.

Impecca reserves the final right to interpret this manual.
Owner's Manual
Air Conditioners
Model:
ISMI-C15
v. 1.1

User Notice
◆When operating, the entire capacity of the cooperating indoor unit should be not larger
than 150% of outdoor unit. Otherwise, it will cause the shortage of cooling (heating) capacity.
◆A Breaker(or fuse) need to be installed in every indoor unit, and the capacity should
in according with indoor unit’s electrical parameter; all the indoor units are required to be
centralized controlled by a total Switch, this Switch can cut off the electric power supply in
case of emergency. The Breaker(or fuse) on each indoor units have the function of short
circuit prevention and abnormal overload avoiding, it should be connected in normal situation.
The total switch controlling the power supply of all the indoor units. Before clearing and
maintenance job being carried out to the indoor units, it is very important to turn off the total
power supply switch.
◆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.
◆An all-pole disconnection switch having a contact separation of at least 3mm in all poles
should be connected in xed wiring.
◆Information regarding transport/storage temperature (-25-55°C) is missing.
◆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 explained in user manual and the height
should be recommended at 0.6-1.7m. over current protection is required(UL 1995,CSA C22.2).
◆The cooling range of the unit is the outdoor environment temp.-5~48°C DB, the heating
range of the unit( only for the heat pump type unit) is the outdoor environment temp. -15~27°C
WB.
This product must not be disposed together with the domestic waste. This product
has to be disposed at an authorized place for recycling of electrical and electronic
appliances.
Thank you for your selecting of Impecca air conditioner, please read this usage
and install instruction carefully and keep it well in order to use this unit correctly.

Contents
1 Safety Information .....................................................................................1
2 Install of The Compact Panel Cassette Type Indoor Unit..........................2
2.1 Schematic diagram of installation spaces ......................................................... 2
2.2 Select install location of the indoor unit............................................................. 2
2.3 Important notice ................................................................................................ 3
2.4 Dimension of ceiling opening and location of the hoisting screw (M10)............ 3
2.5 Main body of hoisting air conditioner................................................................. 3
2.6 Connection of the refrigerant pipe..................................................................... 4
2.7 Drainage hose................................................................................................... 5
2.8 Electrical wiring ................................................................................................. 7
2.9 Install the panel ................................................................................................. 8
3 Constitutes and Names of Parts of Compact Panel Cassette Type Indoor Unit ..10
4 Working Temperature Range................................................................... 11
5 Malfunction Debarring .............................................................................12
5.1 Check the following items before contacting maintenance center .................. 12
5.2 Instruction........................................................................................................ 13
5.3 The following circumstance are not malfunction ............................................. 13
5.4 After-sales Service .......................................................................................... 13
6 Maintenance Method...............................................................................14
6.1 Cleaning air lter ............................................................................................. 14
6.2 Clean air inlet grille.......................................................................................... 15
6.3 Install and change of air purier ...................................................................... 15
6.4 Clean Outlet vent and Surface Panel.............................................................. 16
6.5 Maintenance before or after usage season..................................................... 16

Safety Information
1
1 Safety Information
Please read this manual carefully before use this unit, and operate it correctly according to the
guide in this manual.
Please take specially note to the meaning of these two marks:
Warning!: This mark means that it may cause casualty or badly heart if the operation is
incorrect.
Note!: This mark means that it may cause casualty or property loss if the operation is
incorrect.
Warning:
◆Do not adopt fuse with unsuitable capacity or adopt iron thread instead of fuse, otherwise
malfunction or re may happened.
◆Cut down the main power switch immediately if malfunction (such as smell the burning odor
etc.) happened.
◆Maintain ventilation to prevent oxygen leakage in room.
◆Don’t insert nger or stick like things into discharge vent or outlet grill.
◆Please make sure that the unit is installed in the place that can bear the weight of it
adequately. If the place is not strong enough, the air conditioner may drop and cause casualty event.
◆Don’t spray or smear any oil paint or insecticide on the surface of unit, otherwise, re may be
leaded.
(1). Do not ret the conditioner. Please contact the agency or prefect ional personnel to repair or
move the conditioner.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles
should be connected in xed wiring.
Note!:
◆Please check and make sure that the cord, drainage pipe and tubes are connected in the
correct way to prevent leakage of water, refrigerant, electric shock or re.
◆The main power must connectable to the earth in order to assure the conditioner earthing
effectively and to prevent electric shock. Please don’t connect the earthing line with the gas pipe,
water pipe, lightening rod or the connecting line of telephone.
◆The air conditioner should be turned off at least after 5 mins’ operation; otherwise it would
affect the duration of the unit.
◆Don’t let the children operate the air conditioner.
◆Please don’t operate the unit by wet hand.
◆Please turn off the main power of the unit before cleaning the conditioner or change the lter.
◆Please cut off the main power if the conditioner will be used for a long time.

Install of The Compact Panel Cassette Type Indoor Unit
2
2 Install of The Compact Panel Cassette Type Indoor Unit
2.1 Schematic diagram of installation spaces
≥2500
≥1500
≥1500
Model H
260
unit:mm
＞20
Wall
surface
Wall
surface
Wall
surface
Ground
surface
H
ISMI-C15
Fig.1
2.2 Select install location of the indoor unit
(1). Obstruct should put away from the intake or outlet vent of the indoor unit so that the airow
can be blown though all the room.
(2). Make sure that the installation had accord with the requirement of the schematic diagram of
installation spaces.
(3). Select the place where can stand 4 times of the weight of the indoor unit and would not
increase the operating noise and oscillate.
(4). The horizontally of the installation place should be guaranteed.
(5). Select the place where easy drain condensated coagulated water, and easy connect with
outdoor unit.
(6). Make sure that there are enough space for care and maintenance. Make sure that the
weight between the indoor unit and ground is above 2500mm.
(7). When installing the steeve bolt, check if the install place can stand the weight 4 times of the
unit’s. If not, reinforce before installation. (Refer to the install cardboard and nd where should be
reinforced)
Note!
There will be lots of lampblack and dust stick on the acentric, heat exchanger and water pump
in dining room and kitchen, which would reduce the capacity of heat exchanger, lead water leakage
and abnormal operation of the water pump. The following treatment should be taken under this
circumstance:
(8). Ensure that the smoke trap above cooker has enough capacity to obviate lampblack to
prevent the indraft of the lampblack by the air conditioner.
(9). Keep the air conditioner far from the kitchen so that the lampblack would not be indraft by
the air conditioner.

Install of The Compact Panel Cassette Type Indoor Unit
3
2.3 Important notice
◆To guarantee the good performance, the unit must be installed by professional personnel
according with this instruction.
◆Please contact the local Impecca special nominated repair department before installation.
Any
malfunction caused by the unit that is installed by the department that is not special nominated
by Impecca would not deal with on time by the inconvenience of the business contact.
2.4 Dimension of ceiling opening and location of the hoisting screw (M10)
650
570
400
570 604 650
Fig.2 Install dimension of mode
◆The drilling of holes in the ceiling must be done by the professional personnel.
Ceiling
Installation stands for main body of the unit
(160)
Above 20
Fig.3
Notes: The dimension for the ceiling openings with * marks can be as large as 610mm. But the
overlapping sections of the ceiling and the decorated surface boards should be maintained at no
less than 20mm.
2.5 Main body of hoisting air conditioner
(1). The primary step for install the indoor unit.
◆When attach the hoisting stand on hoisting screw, do use nut and gasket individually at the
upper and lower of the hoisting stand to x it. The use of gasket anchor board can prevent gasket
break off.
(2). Use install cardboard.
◆Please refer to the install cardboard about the dimension of ceiling opening.
◆The central mark of the ceiling opening is marked on the install cardboard.

Install of The Compact Panel Cassette Type Indoor Unit
4
◆Install the install cardboard on the unit by bolt (3 piece), and x the angle of the drainage pipe
at the outlet vent by bolt.
(3). Adjust the unit to the suitable install place. (Refer to the g.3)
(4). Check if the unit is horizontal.
◆Inner drainage pump and bobber switch are included in the indoor unit, check if 4 angle of
every unit are horizontal by water lever. (If the unit is slant toward the opposite of the coagulate
water ow, there may be malfunction of the bobber switch and lead water drop.)
(5). Backout the gasket anchor board used to prevent gasket break off and tighten the nut on it.
(6). Backout the install cardboard.
Fig.4
Note!: Please do tighten the nuts and bolts to prevent air conditioner break off.
2.6 Connection of the refrigerant pipe
◆When connect the pipe to the unit or backout it from the unit, please do use both spanner and
torque wrench. as shown in g.5.
◆When connect, smear both inside and outside of the are nut with freeze motor oil, screw it
by hand and then tighten it with spanner.
◆Refer to form 1 to check if the wrench had been tightened (too tight would mangle the nut
and lead leakage).
◆Examine the connection pipe to see if it had gas leakage, then take the treatment of heat
insulation, as shown in the g.5.
◆Only use median sponge to entwine the wiring interface of the gas pipe and heat preservation
sheath of the gas collection tube.

Install of The Compact Panel Cassette Type Indoor Unit
5
Smear freeze motoroil
here
Spanner
Thread fasten(x4)
Median sponge (attachment)
(entwine the wiring interface
with seal mat)
Gas collection tube
Liquid inlet tube
Heat preservation
sheath of liquid inlet
tube (attachment) (for
liquid tube)
Heat preservation
sheath of gas collection
tube (attachment)(for
gas tube)
Flare nut
Wiring interface
Torque wrench
Fig.5
Form 1: The tightening torque needed for tightening nut
Diameter（Inch）Surface thickness（mm）Tightening torque (N·m)
φ1/4’’ ≥0.5 15-30 (N·m)
φ3/8’’ ≥0.71 30-40 (N·m)
φ1/2’’ ≥1 45-50 (N··m)
φ5/8’’ ≥1 60-65 (N·m)
φ3/4’’ ≥1 70-75 (N··m)
2.7 Drainage hose
(1). Install the drain hose
◆The diameter of the drain hose should be equal or bigger than the connection pipe’s. ( The
diameter of polythene pipe: Outer diameter 25mm Surface thickness ≥1.5mm)
◆Drain hose should be short and drooping gradient should at less 1/100 to prevent the
formation of air bubble.
◆If drain hose cannot has enough drooping gradient, drain raising pipe should be added.
◆To prevent bent of the drain hose, the distance between hoisting stand should is 1 to 1.5m.
Fig.6
◆Use the drain hose and clamp attached. Insert the drain hose to the drain vent, and then
tighten the clamp.
◆Entwine the big sponge on the clamp of drain hose to insulate heat.
◆Heat insulation should be done to indoor drain hose.

Install of The Compact Panel Cassette Type Indoor Unit
6
Sponge(attachment)
Clamp(attachment)
Below 4mm
Clamp
Drain hose
Sponge (gray)
Fig.7
Drain stepup pipe note
◆The install height of the drain raising pipe should less than 280mm.
◆The drain raising pipe should form a right angle with the unit, and distance to unit should not
beyond 300mm.
Fig.8
Instruction
◆The slant gradient of the attached drain hose should be within 75mm so that the drain hole
doesn’t has to endure the unnecessary outside force.
Fig.9
◆Please install the drain hose according to the following process if several drain hoses join
together.
Fig.10
(2). Check the smoothness of drain after installation.
◆Check the drain state by immitting 600cc water slowly from the outlet vent or test hole.
◆Check the drain in the state of refrigerating after installation of the electric circuit.

Install of The Compact Panel Cassette Type Indoor Unit
7
Fig.11
2.8 Electrical wiring
Note:The power of the entire indoor unit must be connected in outdoor unit.
◆About the electrical wiring, please see the circuit diagram attached with the unit.
◆All the installation of electrical wiring must be done by professional personnel.
◆Please do take the earthing treatment.
Wiring method of connection unit and controller
◆Connection wiring (communication):
①Open electric box cover, drag the wiring (communication)from the rubber plug A, and impact
them well individually by impact fastener.
②Wiring according to the indoor side circuit diagram.
◆Fix the impact fastener after connection.
◆Entwine the small sponge on the electric wire( do entwine it to prevent condensation).
◆Impact tightly by impact fastener after connection and then t on the electric box.
◆Connect the 3 cord rubber wire to the counter terminal of the 3 way terminal board.
The power cord reference Power cord standard recommending table
Fig.12
Power cord standard recommending table
Power Supply
(V, Ph, Hz)
Min. Sectional Area of
Earth Wire(AWG)
Min. Sectional Area of
Power Cord(AWG)
208~203V-1Ph-60Hz UL1015 AWG 18*1 UL1015 AWG 18*3

Install of The Compact Panel Cassette Type Indoor Unit
8
2.9 Install the panel
(1). Set the panel to the indoor unit body by matching the position of the swing ap motor of the
panel to the piping position of the panel to the piping position of the indoor unit as shown by g.13.
(2). Install the panel
① .
Install the panel on the indoor unit temporarily. When install, hang the latch on the hook
that is located on the opposite side of the swing ap on the panel of the indoor unit. (2
positions)
② .
Hang the remaining 2 latches to the hooks on the sides of the indoor unit.(Be careful not to
let the swing motor lead wire get caught in the sealing material.)
③ .
Screw the 4 hexagon head screws under the latches in about 15mm. (The panel would
rise)
④ .
Adjust the panel by turning it toward the direction pointed by the arrow as shown in g.13,
so that the adjust board connect the ceiling well.
⑤ .
Tighten the screws until the thickness of the sealing material between panel and indoor
unit reduced to 5-8mm.
Fig.13
Notes:
① .
Improper screwing of the screws may cause the troubles shown in g.14.

Install of The Compact Panel Cassette Type Indoor Unit
9
Air leak
Air leak from ceiling
Water condensatation, water drop
Fig.14
② .
If gap still exist between ceiling and decoration panel after tightening the screws, readjust
the height of the indoor unit. (As shown in g.15)
If the raising lever and drain hose are
not affect, can adjust the height of
indoor unit by the hole on the corner
of panel.
Gaps are not allowed
Fig.15
※ After xing, be sure no gap left between the ceiling and the panel.
③ .
Wiring of the decoration panel (Fig.16)
Connect the joints for swing ap motor lead wire (at 2 places) installed on the panel.
At body At pane
At body At pane
Fig.16

Constitutes and Names of Parts of Compact Panel Cassette Type Indoor Unit
10
3 Constitutes and Names of Parts of Compact Panel Cassette Type
Indoor Unit

Working Temperature Range
11
4 Working Temperature Range
Working Temperature Range
Indoor side state Outdoor side stae
Dry bulb
temp. ℃
Wet bulb
temp. ℃
Dry bulb
temp. ℃
Wet bulb
temp. ℃
Rated Cooling 27 19 35 24
Max. cooling 32 23 48 26
Min. cooling 21 15 18 —
Rated Heating 20 15 7 6
Max. heating 27 —24 18
Min. heating 20 15 － 15 －16

Malfunction Debarring
12
5 Malfunction Debarring
Warning!
◆Cut down the main power switch immediately if malfunction (such as smell the burning odor
etc.) happened, and then contact service 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 service center to repair or move the conditioner.
5.1 Check the following items before contacting maintenance center
Phenomena Reason Remedial Measures
Air conditioner doesn’t
run at all
Blow of fuse or breaker Change fuse or close breaker
Power cut Restart when there is power
supply
Don’t connect with power Connect power well
Low batteries of wireless remote
controller Change new batteries
Wireless remote controller exceed
remote control area
Signal could be received within
8m
Air conditioner runs
but stops immediately
Blockage in inlet or outlet vent of
indoor or outdoor unit Clean out blockage
Abnormal cooling or
heating
Blockage in inlet or outlet vent of
indoor or outdoor unit Clean out blockage
Improper of temp. setting Adjust settings in wireless remote
controller
Low setting of fan speed Adjust settings in wireless remote
controller
Incorrect of wind direction Adjust settings in wireless remote
controller
Door or window opened Close
Direct sun burn Hang curtain or jalousie before
windows
Too many people in room
Too many heater in room
Filter blocked by dirt Clean lter

Malfunction Debarring
13
5.2 Instruction
If problem still cannot found out after above checking, please contact service center and instruct
phenomena and model.
5.3 The following circumstance are not malfunction
“Malfunction” Reason
Air conditioner doesn’t
run
Start up unit immediately after
turned off
The overload protects switch
makes it run after 3 minutes delay.
When opening power Run for about 1 minute without
other actions
Mist is blown from air
conditioner When cooling The high humidity air in room is cooled rapidly
Noise is heard from
air conditioner
Slight click sound heard once
begin running
Sound of initialization for electric
expand valve
Hissing sound heard continuously
when cooling
The sound for gas refrigerant
owing in the unit
Hissing sound heard when staring
or stopping
The sound for gas refrigerant
stops ow
Slight hissing sound heard when
running or after running
Sound for running of drainage
system
Creak sound heard when running
or after running
The grating sound caused by
expands of panel and other parts
for the change of temperature
Dust be blown for air
conditioner
Started up after long time’s doesn’t
runs Dust in indoor unit be blown out
Odor gives out from
air conditioner When running
This is because when air
conditioning, odors or cigarette
smoke from the room that was
sucked in is discharged again.
5.4 After-sales Service
When having quality or other problems when purchasing air conditioner, please contact the local
service center.

Maintenance Method
14
6 Maintenance Method
When air conditioner won’t be used for a long time, please cut off the main power supply
of air conditioner.
Warning!
◆Do turn off the unit and cut off the main power supply when cleaning the air conditioner,
otherwise electric shock or harm may happen.
◆It is forbidden to wash air conditioner by water rinsing, otherwise electric shock may happen.
6.1 Cleaning air lter
Air lters should be cleaned by professionals with proper operation to ensure personal safety.
When the usage environment has lots of dust, air lter should be cleaned more frequently (about
once 6 months).
(1). Open air inlet grille
Loosen two screws on the air inlet grille with a screwdriver. Andpull the 2 handle on air inlet
grille at the same time with the direction showed by arrow in g.17, pull down slowly. (Reverse when
closing)
(2). Disassembly air lter
As shown in fig.18, pull the handle behind air inlet grille, raise it and disassembly. Then
discharge the 3 purier xed on lter.
purifier
Fig.17 Fig.18
(3). Clean
Adopts cleaner or water to wash lter; if the lter is too dirty ( like oil stain on it ), adopts warm
water ( lower than 45℃) with neutral scourer to clean it, then dry it in the shade.
Note ！
Do not clean the filter by hot water whose temp. is higher than 45 ℃to prevent fade or
deformation.
Do not burn it on re or the lter would catches re or deformation.
(4). Install air lter
Fix the 3 puriers on lter, install lter on the several bulges on top of air inlet grille, pull the
handle behind air inlet grille toward inside to x lter. As shown in g.19.

Maintenance Method
15
(5). Close air inlet grille (Refer to the 1st step)
Maintenance Method
Fig.19 Fig.20
6.2 Clean air inlet grille
(1). Open air inlet grille (the same with the 1st step of Clean Air Filter)
(2). Take out air lter (the same with the 2nd step of Clean Air Filter)
(3). Take out air inlet grille
Open air inlet grille for an angle of 45°, as shown in g.20, rise it.
(4). Clean
Clean it by pubescence brush, water and neutral cleaning, then throw water or dry it.
Note ！
Do not use water above 45℃to wash the panel to prevent fade or deformation.
(5). Install air inlet grille (refer to 3rd step)
(6). Install air lter (refer to the 4th step of Clean Air Filter)
(7). Close air inlet grille (refer to the 1st step)
6.3 Install and change of air purier
(1). Open air inlet grille (the same the 1st step of Clean Air Filter)
(2). Disassembly purier
As shown in g.21, disassembly air lter, screw out xing bolts xed on purier on lter, then
purier could be disassembly.
(3). Take out the package sack of static ber net lter, then install the lter in stand of purier,
and x purier on air lter.
(4). Install air lter (the same with the 4th step of Clean Air Filter)
Fix bolt of
purifier
Stand for purifier
Purifier filter
Air filter
Fig.21

Maintenance Method
16
Function and usage period for air purifying
◆Could adsorb CO, CO2, benzene, aldehydes and odor of gasoline etc..
◆Could adsorb deleterious material that is smaller than 1μm in air, as dust, pollen, bacteria,
and virus.
◆Usage period is 6 months to 1 year. If it is necessary to be changed, purchase new purier in
the nearest Impecca special engaged maintenance
center. 6.4 Clean Outlet vent and Surface
Panel
◆Clean the surface panel by soft dry cloth or wet cloth with neutral scourer.
◆It is forbidden to clean surface panel by gasoline, benzene, diluents, cleansing powder etc..
◆If the guide louver is too dirty, it may be removed to be cleaned. (As narrated below)
Disassembly and install of guide louver
(1). Disassembly guide louver
Screw bolts in both end of guide louver to loose.
Note ！
Do not wipe guide louver powerfully when cleaning, otherwise uff on surface would fall off.
(2). Install guide louver
Rotate guide louver slightly could install the protruding edge of both end into grooves on both
end of guide louver, and then tighten bolts.
6.5 Maintenance before or after usage season
Check before the usage season
◆Check if there is blockage in inlet or outlet vent of air conditioner.
◆Check if the earthing wire had earthed reliably.
◆Check if the air lter had been installed well.
◆In order to start up the air conditioner smoothly after long time’s turned off, turn on the main
power supply 8 hours before turning on the air conditioner.
Maintenance after usage season
◆Clean lter and body of air conditioner.
◆Cut off the main power supply of air conditioner.
◆The cooling or heating capacity and sound level are tested before leaving factory.
◆If the parameter changed, refer to the data offered on nameplate.
6.6 CUSTOMER SUPPORT
Before contacting customer support, please see the troubleshooting guide above.
Visit our website to contact us, find answers to Frequently Asked Questions, and for other resources which
may include an updated version of this user's guide.
WWW.IMPECCA.COM
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