INVENTOR V2DI-12 User manual

Your-conditions
Μονάδα δικτύου αεραγωγών Inverter U-match
DC Inverter U-match Series Duct Type Unit
V2DI-12
V2DI-18
V2DI-24
V2DI-30
V2DI-36
V2DI-45
V2DI-50
V2DI-60
English/Ελληνικά/ Româna

1 Safety Precautions ..........................................................................................1
2 Outline of the Unit and Main Parts...................................................................2
3 Preparative for Installation...............................................................................3
3.1 Standard Accessory Parts..........................................................................3
3.2 Selection of the Installation Location..........................................................4
3.3 Connection Pipe Requirement ...................................................................5
3.4 Electrical Requirement...............................................................................6
4 Installation of the Unit......................................................................................7
4.1 Installation of the Indoor Unit......................................................................7
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 Installation of the Duct..............................................................................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....................................................................28
7 Unit Function .................................................................................................29
7.1 Setting of Double Indoor Room Sensors..................................................29
7.2 Checking of Outdoor Ambient Temperature.............................................29
7.3 Fresh Air Control ......................................................................................30
8 Troubleshooting and Maintenance................................................................31
8.1 Troubleshooting........................................................................................31
8.2 Routine Maintenance ...............................................................................31
Contents

DC Inverter U-match Series Duct Type Unit
1
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). For operating the air conditioner pleasantly, install it as outlined in this installation manual.
(2). Connect the indoor unit and outdoor unit with the room air conditioner piping and cord available
from our standard parts. This installation manual describes the correct connections using the
installation set available from our standard parts.
(3). Installation work must be performed in accordance with national wiring standards by authorized
personnel only.
(4). If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in
FRQWDFWZLWKDÀDPHLWSURGXFHVWR[LFJDV
(5). Do not power on until all installation work is complete.
(6). During installation, make sure that the refrigerant pipe is attached firmly before you run the
compressor.
Do not operate the compressor under the condition of refrigerant piping not attached properly with
2-way or 3-way valve open.
This may cause abnormal pressure in the refrigeration cycle that leads to breakage and even
injury.
(7). During the pump-down operation, make sure that the compressor is turned off before you remove
the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2-way or 3-way
valve open.
This may cause abnormal pressure in the refrigerant cycle that leads to breakage and even injury.
(8). :KHQLQVWDOOLQJDQGUHORFDWLQJWKHDLUFRQGLWLRQHUGRQRWPL[JDVHVRWKHUWKDQWKHVSHFLILHG
refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to an
abnormally high value and cause breakage, injury, etc.
(9). This appliance is not intended for use by persons (including children) with reduced physical,
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given supervision or instruction concerning use of the appliance by a person responsible for their
safety.
(10).Children should be supervised to ensure that they do not play with the appliance.
(11).If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
VLPLODUO\TXDOL¿HGSHUVRQVLQRUGHUWRDYRLGDKD]DUG

DC Inverter U-match Series Duct Type Unit
2
2 Outline of the Unit and Main Parts
Indoor
Outdoor
1. power Cord
(OHFWULF%R[
3. Wired controller
4. Wireless Controller
5. Binding tape
6. Drain Pipe
7. Gas Pipe
8. Lipuid Pipe
9. Big Handle
10. Front Board
1 2
3 4
5
679 810
Air outlet
Air outlet
Air inlet
Air inlet
Fig.1
NOTE!
ķ
The connection pipe and duct for this unit should be prepared by the user.
ĸ
The unit is standard equipped with rectangular duct.

DC Inverter U-match Series Duct Type Unit
3
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 Wired Controller 1 To control the indoor unit
2 Hanger or 47R¿[WKHLQGRRUXQLW
3 Nut with Washer 87R¿[WKHKRRNRQWKHFDELQHW
of the unit.
4 Nut with Washer 47R¿[WKHKRRNRQWKHFDELQHW
of the unit.
5 Nut 4To be used together with the
hanger bolt for installing the
unit.
6 Washer 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 Fastener 8 To fasten the sponge
10 Nut 1 To connect liquid pipe
11 Nut 1 To connect gas pipe

DC Inverter U-match Series Duct Type Unit
4
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
3.2 Selection of the Installation Location
WARNING!
7KHXQLWPXVWEHLQVWDOOHGZKHUHVWURQJHQRXJKWRZLWKVWDQGWKHZHLJKWRIWKHXQLWDQG¿[HGVHFXUHO\
otherwise the unit would topple or fall off.
CAUTION!
ķ
Do not install where there is a danger of combustible gas leakage.
ĸ
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Ĺ
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
(1). Install the unit at a place where is strong enough to withstand the weight of the unit.
(2). 7KHDLULQOHWDQGRXWOHWRIWKHXQLWVKRXOGQHYHUEHFORJJHGVRWKDWWKHDLUÀRZFDQUHDFK
every corner of the room.
(3). Leave service space around the unit as required in Fig.2.
Fig.2
(4). Install the unit where the drain pipe can be easily installed.
(5). The space from the unit to the ceiling should be kept as much as possible so as for more
convenient service.

DC Inverter U-match Series Duct Type Unit
5
3.2.2 Outdoor Unit
WARNING!
ķ
Install the unit where it will not be tilted by more than 5°.
ĸ
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securely.
(1). ,ISRVVLEOHGRQRWLQVWDOOWKHXQLWZKHUHLWZLOOEHH[SRVHGWRGLUHFWVXQOLJKW,IQHFHVVDU\
LQVWDOODEOLQGWKDWGRHVQRWLQWHUIHUHZLWKWKHDLUÀRZ
(2). Install the outdoor unit in a place where it will be free from getting dirty or getting wet by
rain as much as possible.
(3). Install the outdoor unit where it is convenient to connect the indoor unit.
(4). Install the outdoor unit where the condensate water can be drained out freely during
heating operation. 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
3.3 Connection Pipe Requirement
CAUTION!
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ZKLFKWKHGLVWDQFHH[FHHGVWKHPD[LPXPOHQJWKRIWKHFRQQHFWLRQSLSH

DC Inverter U-match Series Duct Type Unit
6
Table 3
Size of Fitting
Pipe(Inch) 0D[
Pipe
Length
(m)
0D[+HLJKW
Difference between
Indoor Unit and
Outdoor Unit (m)
Drainage
pipe(Outer
Diameter × wall
thickness) (mm)
Liquid Gas
1/4 3/8 20 15 ĭ;
1/4 1/2 20 15 ĭ;
3/8 5/8 30 15 ĭ;
3/8 5/8 30 15 ĭ;
3/8 5/8 30 15 ĭ;
3/8 5/8 50 30 ĭ;
3/8 5/8 50 30 ĭ;
3/8 5/8 30 15 ĭ;
3/8 5/8 50 30 ĭ;
3/8 5/8 50 30 ĭ;
3/8 3/4 50 30 ĭ;
ķ
The connection pipe should be insulated with proper water-proof insulating material.
ĸ
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 4
Indoor Units Power Supply Fuse Capacity Breaker Capacity Min. Power Supply
Cord
V/Ph/Hz A A mm2
12K~45K 220-240V~ 50Hz 3.15 6 1.0
50K~60K 220-240V~ 50Hz 5 6 1.0
Table 5
Model Power
Supply Capability of Air Switch(A) Minimum Sectional Area of Power Cable and Earth line (mm2)
220-240V
50Hz
13 1.5
16 1.5
20 2.5
20 2.5
25 2.5
25 2.5
40 6.0
380-415V 3N 50Hz
20 2.5
20 2.5
25 2.5
25 2.5
Item
Model
V2DI-12 U2RS-12
V2DI-18 U2RS-18
V2DI-24 U2RS-24
V2DI-30 U2RS-30
V2DI-36 U2RS-36
V2DI-45 U2RS-45
V2DI-50 U2RS-50
V2DI-36 U2RT-36
V2DI-45 U2RT-45
V2DI-50 U2RT-50
V2DI-60 U2RT-60
U2RS-12
U2RS-18
U2RS-24
U2RS-30
U2RS-36
U2RS-45
U2RS-50
U2RT-36
U2RT-45
U2RT-50
U2RT-60

DC Inverter U-match Series Duct Type Unit
7
Note:
ķ
The fuse is located on the main board.
ĸ
Install the disconnect device with a contact gap of at least 3mm in all poles nearby the units
(Both indoor unit and outdoor unit).The appliance must be positioned so that the plug is
accessible.
Ĺ
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EDVHGRQWKHPD[LPXPSRZHUPD[LPXPDPSVRIWKHXQLW
ĺ
The specifications of the power cable listed in the table above are applied to the conduit-
guarded multi-wire copper cable (like, YJV copper cable, consisting of PE insulated wires and
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Ļ
The specifications of the breaker listed in the table above are applied to the breaker with
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according to the related national standard.
ļ
Take 2 pieces of power cord of 0.75mm2as the communication lines between indoor and
outdoor unit, with their longest lengths of 50m. Please select the appropriate line length as per
the actual installation conditions. The communication lines can not be twisted together. For
WKHXQLW.LW¶VUHFRPPHQGHGWRXVHPORQJFRPPXQLFDWLRQOLQH
Ľ
Take 2 pieces of power cord of 0.75mm2as the communication lines between the wired
controller and the indoor unit, with their longest lengths of 30m. Please select the appropriate
line length as per the actual installation conditions. The communication lines can not be twisted
together. It’s recommended to use 8m long communication line.
ľ
The wire size of the communication line should be no less than 0.75mm2. It’s recommended to
take 0.75mm2power cords as the communication line.
4 Installation of the Unit
4.1 Installation of the Indoor Unit
4.1.1 Indoor unit dimension
WARNING!
ķ
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of the main unit and which will not amplify sound or vibration.
ĸ
If the installation location is not strong enough, the indoor unit may fall and cause injuries.
Ĺ
If the job is done with the panel frame only, there is a risk that the unit will come loose. Please
take care.

DC Inverter U-match Series Duct Type Unit
8
For the units: 12~18K, 50k,60k
G
E
D
A
BJ
I
H
CF
For the units: 24~45K
J
,
H
G
B
F
A
E
C
D
Gas Pipe Liquid Pipe
Drainage Pipe (OHFWULF%R[
Air Intake
Ma[
Ma[
Fig.4

DC Inverter U-match Series Duct Type Unit
9
Table 6
Item
Model ABCDEFGH I J
V2DI-12 932 430 738 892 998 721 738 125 203 266
V2DI-18
V2DI-24 1101 515 820 1159 1239 558 1002 160 235 268
V2DI-30
V2DI-36 1011 748 820 1115 1226 775 979 160 231 290
V2DI-45
V2DI-50 1177 646 782 1150 1340 751 953 141 316 350
V2DI-60
4.1.2 Drilling Holes for Bolts and Installing the Bolts
Using the installation template, drill holes for bolts (four holes). (Fig. 5)
4.1.3 Installing the Suspension Bolts
(1). Install the bolts to the ceiling at a place strong enough to hang the unit. Mark the bolt
positions from the installation template. With a concrete drill, drill for 12.7mm (1/2”)
diameter holes. (Fig. 6)
(2). Insert the anchor bolts into the drilled holes, and drive the pins completely into the anchor
bolts with a hammer. (Fig. 7)
(3). Install the hanger to the unit. (Fig.8)
(4). Pass the unit hangers over the bolts installed to the ceiling and install the unit with the
special nut.(Fig.9)
60 to 70 mm
1.27mm
Fig.6Fig. 5 Fig.7

DC Inverter U-match Series Duct Type Unit
10
Fig.8
Hanger
I
I
2:1
Hook ScrewNut
Nut
Fig.9
4.1.4 Leveling
The water level test must be done after installing the indoor unit to make the unit is horizontal,
as shown below.
Horizontal tester
4.2 Installation of the Outdoor Unit
WARNING
ķ
Install the unit where it will not be tilted by more than 5°.
ĸ
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securely.
Fig.10

DC Inverter U-match Series Duct Type Unit
11
4.2.1 Outdoor unit dimension
D
AB
C
E
Fig.11
Table 6 Unit: mm
4.2.2 Condensate Drainage of the Outdoor Unit(Only for the heat pump unit) (Fig.12)
(1). It is required to install a drain pipe for the outdoor unit to drain out the condensate water
during heating operation. (only for the heat pump unit)
(2). When installing the drain pipe, apart from the drain pipe mounting hole, all other holes
should be plugged so as to avoid water leakage.(only for the heat pump unit)
(3). ,QVWDOODWLRQ0HWKRG,QVHUWWKHSLSHMRLQWLQWRWKHKROHijORFDWHGDWWKHEDVHSODWHRIWKH
unit and then connect the drain pipe to the pipe joint.
Item
Model ABCDE
U2RS-12 848 320 540 540 286
U2RS-18 955 396 700 560 360
U2RS-24 980 427 790 610 395
U2RS-30
U2RS-36 1107 440 1100 631 400
U2RT-36
U2RS-45
958 412 1349 572 376
U2RT-45
U2RS-50
U2RT-50
U2RT-60 1085 427 1365 620 395

DC Inverter U-match Series Duct Type Unit
12
Bottom Drain cap
Drain pipe mounting hole
Fig.12
4.3 Installation of the Connection Pipe
4.3.1 Flare Processing
(1). Cut the connection pipe with the pipe cutter and remove the burrs.
(2). Hold the pipe downward to prevent cuttings from entering the pipe.
(3). 5HPRYHWKHÀDUHQXWVDWWKHVWRSYDOYHRIWKHRXWGRRUXQLWDQGLQVLGHWKHDFFHVVRU\EDJRI
WKHLQGRRUXQLWWKHQLQVHUWWKHPWRWKHFRQQHFWLRQSLSHDIWHUWKDWÀDUHWKHFRQQHFWLRQSLSH
ZLWKDÀDULQJWRRO
(4). &KHFNLIWKHÀDUHSDUWLVVSUHDGHYHQO\DQGWKHUHDUHQRFUDFNVVHH)LJ
Fig.13
4.3.2 Bending Pipes
(1). The pipes are shaped by your hands. Be careful not to collapse them.
h
Ĝ
Fig.14
(2). Do not bend the pipes in an angle more than 90°.
(3). :KHQSLSHVDUHUHSHDWHGO\EHQWRUVWUHWFKHGWKHPDWHULDOZLOOKDUGHQPDNLQJLWGLI¿FXOWWR
bend or stretch them any more. Do not bend or stretch the pipes more than three times.

DC Inverter U-match Series Duct Type Unit
13
(4). When bending the pipe, do not bend it as is. The pipe will
be collapsed. In this case, cut the heat insulating pipe
with a sharp cutter as shown in Fig.15, and bend it after
H[SRVLQJWKHSLSH$IWHUEHQGLQJWKHSLSHDV\RXZDQWEH
sure to put the heat insulating pipe back on the pipe, and
secure it with tape. Fig.15
Pipe
Cutter
Cutt line
Heat insulating
pipe
CAUTION!
ķ
To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature
of 150 mm or over.
ĸ
If the pipe is bent repeatedly at the same place, it will break.
4.3.3 Connecting the Pipe at the Indoor Unit Side
Detach the caps and plugs from the pipes.
CAUTION!
ķ
Be sure to apply the pipe against the port on the indoor unit correctly. If the centering is
improper, the flare nut cannot be tightened smoothly. If the flare nut is forced to turn, the
threads will be damaged.
ĸ
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and impurities from coming into the pipe system.
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CAUTION!
Hold the torque wrench at its grip, keeping it in the right angle with the pipe as shown in Fig. 15,
LQRUGHUWRWLJKWHQWKHÀDUHQXWFRUUHFWO\
:KHQWKHÀDUHQXWLVWLJKWHQHGSURSHUO\E\\RXUKDQGXVHDWRUTXHZUHQFKWR¿QDOO\WLJKWHQLW
Fig.16
Fig.17

DC Inverter U-match Series Duct Type Unit
14
Table 7 Flare nut tightening torque
Pipe Diameter Tightening Torque
1/4ÝInch) 15-30 (N·m)
3/8ÝInch) 35-40 (N·m)
5/8ÝInch) 60-65 (N·m)
1/2ÝInch) 45-50 (N·m)
3/4ÝInch) 70-75 (N·m)
7/8ÝInch) 80-85 (N·m)
CAUTION!
Be sure to connect the gas pipe after connecting the liquid pipe completely.
4.3.4 Connecting the Pipe at the Outdoor Side Unit
Tighten the flare nut of the connection pipe at the outdoor unit
valve connector. The tightening method is the same as that as at the
indoor side.
4.3.5 Checking the Pipe Connections for Gas Leaking
For both indoor and outdoor unit side, check the joints for gas
leaking by the use of a gas leakage detector without fail when the
pipes are connected.
4.3.6 Heat Insulation on the Pipe Joints (Indoor Side Only)
Stick coupler heat insulation (large and small) to the place where connecting pipes.
Fig.18
Fig.19

DC Inverter U-match Series Duct Type Unit
15
4.3.7 Liquid Pipe and Drain Pipe
Sealed
Drain
pipe
Saddle
Fig.20
Fig.21
Trap
If the outdoor unit is installed lower than
the indoor unit (See Fig.20)
(1). A drain pipe should be above ground
and the end of the pipe does not
dip into water. All pipes must be
restrained to the wall by saddles.
(2). Taping pipes must be done from
bottom to top.
(3). All pipes are bound together by tape
and restrained to wall by saddles.
If the outdoor unit is installed higher than
the indoor unit (See Fig.21)
(1). Taping should be done from lower to
the upper part.
(2). All pipes are bound and taped
together and also should be trapped
to prevent water from returning to the
room (See Fig.49)
(3). Restraint all pipes to the wall with
saddles.
4.4 Vacuum and Gas Leakage Inspection
CAUTION!
Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is
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4.4.1 Vacuum
(1). Remove the caps of the liquid valve, gas valve and also the service port.
(2). Connect the hose at the low pressure side of the manifold valve assembly to the service
port of the unit’s gas valve, and meanwhile the gas and liquid valves should be kept closed
in case of refrigerant leak.
(3). Connect the hose used for evacuation to the vacuum pump.
(4). Open the switch at the lower pressure side of the manifold valve assembly and start the

DC Inverter U-match Series Duct Type Unit
16
vacuum pump. Meanwhile, the switch at the high pressure side of the manifold valve
assembly should be kept closed, otherwise evacuation would fail.
(5). The evacuation duration depends on the unit’s capacity, generally, 15 minutes for the
12K units, 20 minutes for the 18K units, 30 minutes for the 24/30/36K units, 45
minutes for the 45/50/60 units. And verify if the pressure gauge at the low pressure side
of the manifold valve assembly reads -1.0Mp (-75cmHg), if not, it indicates there is leak
somewhere. Then, close the switch fully and then stop the vacuum pump.
(6). Wait for some time to see if the system pressure can remain unchanged, 3 minutes for the
units less than 18K, 5 minutes for the 18K~24K units, 10 minutes for the units more than
45K. During this time, the reading of the pressure gauge at the low pressure side can not
be larger than 0.005Mp (0.38cmHg).
(7). Slightly open the liquid valve and let some refrigerant go to the connection pipe to balance
the pressure inside and outside of the connection pipe, so that air will not come into the
connection pipe when removing the hose. Note that the gas and liquid valve can be opened
fully only after the manifold valve assembly is removed.
(8). Place back the caps of the liquid valve, gas valve and also the service port.
Hose with the valve pin
gauge manifold
pipe
pipe
VAC valve
Vacuum pump
Service port
Low pressure gauge
High pressure gauge
Gauge manifold kit
Fig.22
Note: For the large-sized unit, it has the service port for both the gas valve and the liquid valve.
During evacuation, it is available to connect two hoses of the manifold valve assembly to two
service ports to quicken the evacuating speed.
4.4.2 Additional Charge
Refrigerant suitable for a piping length of 5m is charged in the outdoor unit at the factory.
When the piping is longer than 7m, additional charging is necessary.
For the additional amount, see Table 8. Table 8
Model
Item $GGLWLRQDO5HIULJHUDQW$PRXQWIRU([WUD3LSH
12~18K 30g/m
24~60K 60 g/m
When the height difference between the indoor unit and outdoor unit is larger than 10 meters,

DC Inverter U-match Series Duct Type Unit
17
an oil bend should be employed for every 6 meters.
Oil bend
Oil bend
Indoor
Outdoor
6m
4.5 Installation of the Drain Hose
4.5.1 Installation of Drain Piping
CAUTION!
Install the drain hose in accordance with the instructions in this installation manual and keep the
area warm enough to prevent condensation. Problems with the piping may lead to water leaks.
(1). Install the drain hose with downward gradient (1/50 to 1/100) and no risers or traps are
used for the hose.(Fig.23)
(2). Be sure there is no crack or leak on the drain hose to avoid the formation of air pocket.
(Fig.23)
(3). When the hose is long, install supporters.(Fig.24)
(4). Always use the drain hose which has been insulated properly.
h
Ĝ
Fig.23
Fig.24 Fig.25

DC Inverter U-match Series Duct Type Unit
18
As the inside of the unit
is in the negative pressure
status, it is required to set
up a backwater elbow. The
requirements is:
A=B ıP/10+20(mm)
P is the absolute pressure
inside the unit. The unit of the
pressure is Pa.
Condensate Drainpipe
B
A
Condensate Drainpipe
Enlarged View
B
A
Fig.26
(5). Use a suitable drain hose, and see Table 3 for its size.
(6). There is a drain port on both the left and right sides. Select
the drain port to match the local conditions.(Fig.25)
(7). When the unit is shipped from the factory, the drain port is
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the port on right side has been plugged.
(8). When using the drain port on the right side of the unit,
reinstall the drain cap to the left side drain port.(Fig.27) Fig.27
CAUTION!
Always check that the drain cap is installed to the unused drain port and is fastened with the nylon
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drip during the cooling operation.
(9). Be sure to insulate where the drain port and the drain hose is connected.(Fig.28 )
(10). The unused drain port also should be insulated properly.(Fig.29)
Fig.28 Fig.29
(11). There is adhesive on one side of the insulation so that after removing the protective paper