INVENTOR V2CI-12 User manual

DC Inverter U-match Series Cassette Type Unit
V2CI-12
V2CI-18
V2CI-24
V2CI-30
V2CI-36
V2CI-45
V2CI-50
V2CI-60

1 Safety Precautions ..........................................................................................1
2 Outline of the Unit and Main Parts...................................................................3
3 Preparative for Installation...............................................................................4
3.1 Standard Accessory Parts..........................................................................4
3.2 Selection of the Installation Location..........................................................5
3.3 Connection Pipe Requirement ...................................................................7
3.4 Electrical Requirement...............................................................................7
4 Installation of the Unit......................................................................................9
4.1 Installation of the Indoor Unit......................................................................9
4.2 Installation of the Outdoor Unit.................................................................10
4.3 Installation of the Connection Pipe...........................................................12
4.4 Vacuum and Gas Leakage Inspection......................................................15
4.5 Installation of the Drain Hose...................................................................17
4.6 The Panel Installation ..............................................................................20
4.7 Electrical Wiring........................................................................................22
5 Installation of Controllers...............................................................................27
6 Test Running..................................................................................................27
6.1 Trial Operation and Testing.......................................................................27
6.2 Working Temperature Range....................................................................29
7 Troubleshooting and Maintenance ................................................................30
7.1 Troubleshooting........................................................................................30
7.2 Routine Maintenance ...............................................................................31
Contents

DC Inverter U-match Series Cassette Type Unit
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1 Safety Precautions
WARNING! This mark indicates procedures which, if improperly performed, might lead to the
death or serious injury of the user.
CAUTION! This mark indicates procedures which, if improperly performed, might possibly result
in personal harm to the user, or damage to property.
WARNING!
(1). Installation should be left to the dealer or another professional. Improper installation may cause
water leakage, electrical shock, or re.
(2). Install the air conditioner according to the instructions given in this manual. Incomplete installation
may cause water leakage, electrical shock, or re.
(3). Be sure to use the supplied or specied installation parts. Use of other parts may cause the unit to
come to lose, water leakage, electrical shock, or re.
(4). Install the air conditioner on a solid base that can support the weight of the unit. An inadequate base
or incomplete installation may cause injury in the event the unit falls off the base.
(5). Electrical work should be carried out in accordance with the installation manual and the national
electrical wiring rules or code of practice. Insufcient capacity or incomplete electrical work may
cause electrical shock or re.
(6). Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance.
(7). For wiring, use a cable length enough to cover the entire distance with no connection. Do not use
an extension cord. Do not put other loads on the power supply, use a dedicated power circuit.
(Failure to do so may cause abnormal heat, electric shock or re.)
(8). Use the specied types of wires for electrical connections between the indoor and outdoor units.
Firmly clamp the interconnecting wires so their terminals receive no external stresses. Incomplete
connections or clamping may cause terminal overheating or re.
(9). After connecting interconnecting and supply wiring be sure to shape the cables so that they do not
put undue force on the electrical covers or panels. Install covers over the wires. Incomplete cover
installation may cause terminal overheating, electrical shock, or re.
(10). If any refrigerant has leaked out during the installation work, ventilate the room. (The refrigerant
produces a toxic gas if exposed to ames.)
(11). After all installation is complete, check to make sure that no refrigerant is leaking out. (The
refrigerant produces a toxic gas if exposed to ames.)
(12). When installing or relocating the system, be sure to keep the refrigerant circuit free from
substances other than the specied refrigerant (R410A), such as air. (Any presence of air or other
foreign substance in the refrigerant circuit causes an abnormal pressure rise or rupture, resulting in
injury.)
(13). During pump-down, stop the compressor before removing the refrigerant piping. If the compressor
is still running and the stop valve is open during pump-down, air will be sucked in when the
refrigerant piping is removed, causing abnormal pressure in the freezer cycle which will lead to
breakage and even injury.

DC Inverter U-match Series Cassette Type Unit
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(14). During installation, attach the refrigerant piping securely before running the compressor. If the
compressor is not attached and the stop valve is open during pump-down, air will be sucked in
when the compressor is run, causing abnormal pressure in the freezer cycle which will lead to
breakage and even injury.
(15). Be sure to establish an earth. Do not earth the unit to a utility pipe, arrester, or telephone earth.
Incomplete earth may cause electrical shock, or re. A high surge current from lightning or other
sources may cause damage to the air conditioner.
(16). Be sure to install an earth leakage breaker. Failure to install an earth leakage breaker may result in
electric shocks, or re.
(17). 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.
(18). Children should be supervised to ensure that they do not play with the appliance.
(19). If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualied persons in order to avoid a hazard.
CAUTION!
(1). Do not install the air conditioner in a place where there is danger of exposure to inammable gas
leakage. If the gas leaks and builds up around the unit, it may catch re.
(2). Establish drain piping according to the instructions of this manual. Inadequate piping may cause
ooding.
(3). Tighten the are nut according to the specied method such as with a torque wrench. If the are
nut is tightened too hard, the are nut may crack after a long time and cause refrigerant leakage.

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2 Outline of the Unit and Main Parts
1. Drainage device
2. Drainage pipe
3. Air ow ap
4. Connection pipe
5. Wireless Controller
6. Wired Controller
7. Big handle
8. Liquid Pipe
9. Gas pipe
10. Drainage pipe
11. Front Board
Indoor
Outdoor
2
3
4
7
5 6
1
8
9
10
11
Air inlet
Air outlet
Fig.1

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3 Preparative for Installation
3.1 Standard Accessory Parts
The standard accessory parts listed below are furnished and should be used as required.
Table 1
Indoor Unit Accessories
No. Name Appearance Q'ty Usage
1 Drain Hose 1To connect with the hard PVC drain
pipe
2 Nut with Washer 4To x the hook on the cabinet of the
unit.
3 Washer 10 To be used together with the
hanger bolt for installing the unit.
4 installation paperboard 1 used for ceiling drilling
5 Gasket mounting board 4Used to prevent gasket from falling
off
6Wireless Controller
+Battery 1+2 To control the indoor unit
7 sealing plaster 1
8 Fastener 4 To fasten the sponge
9 Insulation 1 To insulate the gas pipe
10 Insulation 1 To insulate the liquid pipe
11 Sponge 4 To insulate the drain pipe
12 Nut 1 To connect gas pipe
13 Nut 1 To connect liquid pipe
14 Enswathement 2
Table 2
Outdoor Unit Accessories
No. Name Appearance Q'ty Usage
1 Drain Plug 3 To plug the unused drain hole.
2 Drainage Connecter or 1To connect with the hard PVC drain
pipe

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3.2 Selection of the Installation Location
WARNING!
The unit must be installed where strong enough to withstand the weight of the unit and xed securely,
otherwise the unit would topple or fall off.
CAUTION!
① .
Do not install where there is the danger of combustible gas leakage.
② .
Do not install the unit near heat source of heat, steam, or ammable gas.
③ .
Children under 10 years old must be supervised not to operate the unit.
Decide the installation location with the customer as follows:
3.2.1 Indoor Unit
Select an installation site where the following conditions are fulfilled and that meets your
customer’s approval.
(1). Obstruct should be put away from the intake or outlet vent of the indoor unit so that the
airow can be blown through all the room.
(2). Make sure that the installation meets 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 vibration.
(4). The horizontality of the installation place should be guaranteed.
(5). Select the place where is easy to drain out the condensate water, and connect with outdoor
unit.
(6). Make sure that there are enough space for care and maintenance, and the height fall
between the indoor unit and ground is above 1800mm.
(7). When installing the suspension bolt, check if the installation place can stand 4 times of the
weight of the unit. If not, reinforce it before installation.
Note: There will be large amount of greasy dirt accumulated on the fan, heat exchanger and water
pump located in the dinning room and kitchen, which would reduce the capacity of the heater
exchanger, lead to leakage and abnormal operation of the water pump.

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Models H(mm)
V2CI-12 255
V2CI-18
V2CI-20 260
V2CI-30 340V2CI-36
V2CI-45
V2CI-50 320
V2CI-60
Table 3
Fig.2
3.2.2 Outdoor Unit
WARNING!
① .
Install the unit where it will not be tilted by more than 5°.
② .
During installation, if the outdoor unit has to be exposed to strong wind, it must be xed securely.
If possible, do not install the unit where it will be exposed to direct sunlight. (If necessary, install
a blind that does not interfere with the air ow.)
(1). Install the outdoor unit in a place where it will be free from being dirty or getting wet by rain
as much as possible.
(2). Install the outdoor unit where it is convenient to connect with the indoor unit.
(3). Install the outdoor unit where the condensate water can be drained out freely during
heating operation.
(4). Do not place animals and plants in the path of the warm air.
(5). Take the air conditioner weight into account and select a place where noise and vibration
are small.
(6). Install the outdoor unit where is capable of withstanding the weight of the unit and
generates as less noise and vibration as possible.
(7). Provide the space shown in Fig.3, so that the air flow is not blocked. Also for efficient
operation, leave three of four directions of peripheral constructions open. Units: mm
＞500
＞500 ＞500 ＞500
＞2000
＞2000
＞1000
Fig.3

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3.3 Connection Pipe Requirement
CAUTION!
The maximum length of the connection pipe is listed in the table below. Do not place the units between
which the distance exceeds the maximum length of the connection pipe.
Table 4
Item
Model
Size of Fitting
Pipe(Inch) Max.
Pipe
Length
(m)
Max. Height
Difference between
Indoor Unit and
Outdoor Unit (m)
Drainage
pipe(Outer
Diameter × wall
thickness) (mm)
Liquid Gas
V2CI-12 U2RS-12 1/4 3/8 20 15
Φ25×1.5
V2CI-18 U2RS-18 1/2 20 15
V2CI-24 U2RS-24
3/8 5/8
30 15
V2CI-30 U2RS-30 30 15
V2CI-36 U2RS-36 30 15
V2CI-45 U2RS-45 50 30
V2CI-50 U2RS-50 50 30
V2CI-36 U2RT-36 30 15
V2CI-45 U2RT-45 50 30
V2CI-50 U2RT-50 50 30
V2CI-60 U2RT-60 3/8 3/4 50 30
The connection pipe should be insulated with proper water-proof insulating material.
The pipe wall thickness shall be 0.5-1.0mm and the pipe wall shall be able to withstand the
pressure of 6.0 MPa. The longer the connecting pipe, the lower the cooling and heating effect
performs.
3.4 Electrical Requirement
Electric Wire Size and Fuse Capacity. Table 5
Indoor Units Power Supply Fuse Capacity Breaker Capacity Min. Power Supply Cord
V/Ph/Hz A A mm2
12K~60K 220-240V~ 50Hz 3.15 6 1.0