Toshiba MMY-MAP0802FT8, MMY-MAP1202FT8, MMY-MAP1002FT8 INSTALLATION MANUAL

FILE NO : A06-009

Quick reference

R410A

Refrigerant Piping

Allowable length of refrigerant pipe and height difference

Follower unit C

Follower unit B

Height difference between outdoor units H3 £ 5 m

Height difference between outdoor and indoor units H1 £ 50 m

•Allowable length/height difference of the refrigerant pipe

Total extension of pipe (Liquid pipe/real length)

Farthest piping length L (*1)

Max. equivalent length of main piping Equivalent length of farthest piping from 1 st branching Li (*1)

Pipe

Max. real length of indoor unit connecting piping

length

Max. real length between FS unit and indoor unit (*2) Max. equivalent length of outdoor unit connecting pipe LO (*1) Max. real length of outdoor unit connecting pipe Max. equivalent length between FS unit and indoor unit Lj Max. real length between FS unit and indoor unit which FS unit

control wiring is connected Lh (*2) Height between

indoor unit and outdoor unit H1

Height between

Height

indoor unit H2

difference

Height between outdoor units H3 Height difference between indoor units in group control by one

FS unit H4

*1 : The farthest indoor unit from 1st branch to be named C, and fa rthest indoor unit from 1st branch to be named (q). *2 : Attached connection cable can be used up to 5 m in pipe length between indoor unit and FS unit.

When the pipe length between indoor and FS unit exceeds 5 m, be sure to use the connection cable kit (RBC-CBK15FE).

• Restriction to the system

Max. No. of combined outdoor units Max. capacity of combined outdoor units Max. No. of connected indoor units

Max. capacity of connected indoor units

Min. capacity of connected indoor units

*3 : MMY-MAP1202FT8 up to 120%.

Header unit A

Outdoor unit

T-Shape branching main piping

Branching piping L2 Connecting piping of

1st

indoor unit branching section

Indoor unit

Equivalent length corresponded to farthest piping L £ 150 m

Equivalent length corresponded to farthest piping after 1st branching Li £ 50 m

FS unit

Indoor unit

Indoor unit which FS unit control wiring is connected.

H2 < 15 m 135% (*3) H2 > 15 m 105%

Outdoor capacity : 70%

Lb Lc

Main connecting piping between outdoor units Length corresponded to farthest piping between outdoor units LO £ 25 m

bca

hi jkg

L6 L7

Real length Equivalent length

Upper outdoor unit Lower outdoor unit Upper outdoor unit Lower outdoor unit

3 units

84.0 kW 48 units

Branching header

FS unit

FS unit

When connecting the plural indoor units to single FS unit.

Allowable value

Note 1) Combination of outdoor unit : Header unit (1 unit) + Follow unit

Note 2) Install the outdoor units in order of capacity.

Note 3) Refer to outdoor unit combination table in page 5. Note 4) Piping to indoor units shall be per pendicular to piping to the

•Cautions concerned with installation/construction

1) The leading outdoor unit connected with the indoor inter-unit pipe is made “A (Header unit)”.

2) Set the units in order of the outdoor capacity. (A (Header unit) > B > C > D)

3) For the combination of the outdoor units, refer to “Combination of outdoor unit” list.

Note:

In case of connecting method <Ex.2>, a large amount of refrigerant and refrigerant oil may return to the head unit. Therefore, set the T-shape joint so that oil does not enter directly.

LA + La + Lb + Lc + L1 + L2 + L3 + L4 + L5 + L6 + L7 + L8 + L9

300 m

+ a + b + c + d + e + f + g + h + i + j + k + l + m + n + o+ p + q 125 m 150 m

85 m 50 m 30 m 15 m 25 m 10 m 30 m

15 m 50 m

30 m 35 m 15 m

5 m

0.5 m

(0 to 2 units). Header unit is outdoor unit nearest to the connected indoor units.

Header

<Ex.1>

unit A

Header

<Ex.2>

unit A

NO GOOD

Height difference between indoor units H2 £ 35 (Upper outdoor unit)

Height difference between indoor units in group control by one FS unit H4 £ 0.5 m

Pipe section

LA + Lc + L1 + L3 + L4 + L5 + L6 + L7 + L8 + q

a + g, b + h, c + i, d + l, e + m, f + m, f + n, j, k

L3 + L4 + L5 + L6 + L7 + L8 + q

g, h, i, l, m, n, L7 + o

LA + Lc (LA + Lb)

La, Lb, Lc

L7 + L8 + p, L7 + L8 + q

L7 + o

—— —— —— —— ——

——

(Header unit > Follow unit 1 > Follow unit 2)

head outdoor unit as <Ex. 1>. Do not connect piping to indoor units in the same direction of head outdoor unit as <Ex. 2>.

Follower

unit B

Follower

unit B

Follower

unit C

Follower

unit C

Addition of refrigerant

After vacuuming work, exchange the vacuum pump with the refrigerant bomb and then start the additional charging work of refrigerant.

Calculation of additional refrigerant charge amount

Refrigerant charge amount at shipment from the factory does not include the refrigerant for pipe at the local site. For refrigerant to be charged in pipe at the local site, calculate the amount and charge it additionally. Note) If the additional refrigerant amount indicates minus as the result of calculation, use the air conditioner without

addition of refrigerant.

Outdoor unit Model Charging amount (kg)

Additional refrigerant charge amount at local site

Example : Additional charge amount R (kg) = {(L1 × 0.025kg/m) + (L2 × 0.055kg/m) + (L3 × 0.105kg/m)} × 1.3

Table-1 Table-2

Liquid

pipe dia.

Charging of refrigerant

•Keeping valve of the outdoor unit closed, be sure to charge the liquid refrigerant into service port at liquid side.

• If the specified amount of refrigerant cannot be charged, open fully valves of outdoor unit at liquid and discharge/ suction gas sides, balance side operate the air conditioner in COOL mode under condition that valve at suction gas side is a little returned to close side, and then charge refrigerant into service port at suction gas side. In this time, choke the refrigerant slightly by operating valve of the bomb to charge liquid refrigerant. The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.

•When refrigerant leaks and refrigerant shortage occurs in the system, recover the refrigerant in the system and recharge refrigerant newly up to the correct level.

•Fill the additional refrigerant record column of the wiring diagram indication plate with the additional refrigerant

• The total refrigerant amount means the total value of the refrigerant amount at shipment and the additional refriger-

Additional refrigerant

amount/1m liquid pipe (kg/m)

(mm)

6.4

9.5

12.7

15.9

19.1

22.2

amount at installation work, total refrigerant amount and the name of the service man who charged refrigerant at installation time.

0.025

0.055

0.105

0.160

0.250

0.350

ant amount at installation time. The refrigerant amount at the shipment is one described on the “Unit nameplate”.

MMY-MAP0802FT8 MMY-MAP1002FT8 MMY-MAP1202FT8

Real length

=× ×

( )

of liquid pipe

Additional refrigerant charge amount per 1m liquid pipe (Table 1)

L1 : Real total length of liquid pipe Ø6.4 (m) L2 : Real total length of liquid pipe Ø9.5 (m) L3 : Real total length of liquid pipe Ø12.7 (m) System : 10HP

Combined

(HP)

8 10 12 16 18 20 24 26 28 30

Combined outdoor unit

8 10 12 8 8 10 8 10 10 8 8 8 10 8 8 10 10 8 10 10 10

(HP)

11.5

Compensation by

1.3

system HP (Table 2)

C (Corrected refrigerant amount)

–1.5

–4.5 –3.0 –1.5

(kg)

2.0

2.5

3.0

0.0

2.0

0.0

REQUIREMENT

Refrigerant Piping Diagram (Outdoor)

Inverter unit (8, 10, 12HP)

Model: MMY-MAP0802FT8, MAP1002FT8, MAP1202FT8

Propeller fan

Fan motor

(Right side)

Main heat exchanger

(Left side)

Main heat exchanger

Sub heat exchanger (Right side)

Sub heat exchanger (Left side)

Solenoid valve (SV11)

Check valve

Solenoid valve

Oil

separator

Strainer

Check valve Check valve

tube

Sensor

(TK3)

Strainer

Check

valve

Sensor

(TK1)

(SV3A)

Check valve

Strainer

Solenoid valve (SV3C)

Strainer

Check

valve

Capillary tube

Sensor

(TK2)

Oil tank

Solenoid valve

(SV3B)

Check valve

Compressor 2

Capillary

Sensor (TK4)

Solenoid valve

(SV2)

(Inverter)

4-Way valve

Capillary

tube

Capillary tube

Solenoid valve

(SV42)

High-pressure

switch

Sensor

(TD2)

Sensor

(TO)

Pulse motor valve

Solenoid valve

(PMV1) (PMV2)

Check valve

Strainer

Sensor

(TL)

Liquid

tank

Check

joint

Strainer Strainer

Service valve

Service valve at

of balance pipe

discharge gas side

Service valve

Service valve at

at liquid side

suction gas side

Sensor (TE1)

Strainer

(SV12)

Strainer

(PMV3)

Check valve

Solenoid valve (SV5)

Capillary

High-pressure

tube

Solenoid valve

(SV6)

Solenoid valve

sensor Check joint

Capillary tube

Strainer

(SV3D)

Capillary tube

(SV41)

High-pressure switch

Sensor

(TD1)

Compressor 1

(Inverter)

Capillary tube

Solenoid valve

(SV3E)

Capillary tube Capillary tube

Strainer

Sensor

(TS1)

Sensor

(TS2)

Low-pressure

Accumulator

sensor

Check

joint

Explanation of functional parts

Functional part name

Solenoid valve

4-way valve

Pulse motor valve

Oil separator

Temp. sensor

(Connector CN324: Red)

SV3A

Closed : Allows oil to collect/remain in the oil tank. Open : Allows oil to exit the oil tank.

(Connector CN313: Blue)

SV3B

Open : Allows oil to return to the outdoor unit via the balance pipe. (Connector CN314: Black)

SV3C

Open : Pressurizes the oil tank. (Connector CN323: White)

SV3D

Open : Supplies oil to the compressor from the oil separator. (Connector CN323: White)

SV3E

Open : Tu rns on during operation and balances oil between compressors. (Hot gas bypass) (Connector CN312: White)

1) Low pressure release function

ASV2

2) High pressure release function

3) Gas balance function during stop time (Gas balance control for compressor start-up) (Connector CN311: Blue)

SV41

1) For gas balance start

SV42

2) High pressure release function

3) Low pressure release function (Connector CN310: White)

SV5

1) Increase of No. of heating indoor units, Gas balance function in defrost time

2) Low-pressure balance function of discharge gas pipe during all cooling operation (Connector CN309: White)

SV6

1) Liquid bypass function for discharge temp. release (Cooling bypass circuit) (Connector CN322: White)

SV11

1) For shutdown discharge gas (During all cooling operation and defrost operation) (Connector CN319: White)

SV12

1) Flow-rate control function of refrigerant to sub heat exchanger during simultaneous operation

2) Flow-rate control function of refrigerant to sub heat exchanger during defrost operation (Connector CN317: Blue)

1) Cooling/Heating selection

2) Reverse defrost

3) Main-/Sub-heat exchanger selection (Connector CN300, 301: White)

1) Super heat control function during all heating operation and mainly heating, partly cooling operation

PMV1, 2

2) Under-cool adjustment function during all cooling operation

3) Divided flow control function during mainly cooling, partly heating operation (Connector CN302: Red)

1) For flow-rate control of sub heat exchanger during simultaneous operation

PMV3

TD1, TD2

TS1

TS2

TK1, TK2, TK3, TK4

(Control function of heating divided flow)

2) A function preventive high pressure up during all cooling or all heating operation

1) Prevention for early drop of oil level (Decrease of flow-out of discharge oil to cycle)

2) Reser ve function of surplus oil (TD1: Connector CN502: White, TD2: Connector CN503: Pink)

1) Protection of compressor discharge temp.

2) Releasing of discharge temp. (Connector CN504: White)

1) Controls super heat of PMV1 and 2 during all heating operation and simultaneous operation (Connector CN522: Black)

1) Controls indoor oil recovery during all cooling operation and mainly cooling, partly heating operation

2) Detects overheat of cycle. (Connector CN505: Green)

1) Controls defrost during all heating operation and simultaneous operation.

2) Controls outdoor fan during all heating operation and simultaneous operation. TK1: Connector CN514: Black, TK2: Connector CN515: Green,

æ ö è ø

TK3: Connector CN516: Red, TK4: Connector CN523: Yellow

1) Judges oil level of compressor.

(Connector CN521: White)

1) Detects under-cool during all cooling operation and simultaneous operation.

(Connector CN507: Ye llow)

1) Detects external ambient temperature.

Functional outline

Continued

Functional part name

High pressure sensor

Pressure sensor

Low pressure sensor

Heater

Balance pipe

Compressor case heater

Accumulator case heater

Operation mode

1. All Indoor Unit(s) Operating for Cooling

2. All Indoor Unit(s) Operating fo r Heating

3. Simu ltaneous operation

3-1. Mainly cooling, par tly heating operation

3-2. Mainly heating, par tly cooling operation

4. Defrost

(Connector CN501: Red)

1) Detects high pressure and uses it to control capacity of compressor.

2) Detects high pressure during all cooling operation and uses it to control fan when cooling with low outside air.

3) Detects under-cool of the indoor unit of which heating thermo.-ON during all heating operation and simultaneous operation.

4) Controls outdoor fan rpm during mainly cooling, par t heating operation.

(Connector CN500: White)

1) Detects low pressure and uses it to control capacity of compressor during all cooling operation and simultaneous operation

2) Detects low pressure and uses it to controls super heat during all heating operation and simultaneous operation

(Compressor 1 Connector CN316: White, Compressor 2 Connector CN315: Blue)

1) Prevents liquid accumulation in the compressor

(Connector CN321: Red)

1) Prevents liquid accumulation to accumulator

1) Oil balancing pipe between outdoor unit (This unit does not use this Balance pipe.)

Only cooling operation without heating operation Outdoor heat exchanger (Main heat exchanger) is used as condenser.

Only heating operation without cooling operation Outdoor heat exchanger (Main heat exchanger) is used as evaporator.

MIU for simultaneous operation

Cooling/heating simultaneous operation with subjective cooling operation Outdoor heat exchanger (Sub heat exchanger) is used as condenser.

Cooling/heating simultaneous operation with subjective heating operation Outdoor heat exchanger (Main heat exchanger) is used as evaporator.

Using reversing operation of 4-way valve, ice of the outdoor heat exchanger is dissolved with single cooling cycle.

Functional outline

Outline

Configuration of outdoor unit heat exchanger Flow Selector Unit (FS Unit)

* RBM-Y1801FE has two “SVS” valves.

Check

valve

Strainer

SVS

SVSS

SVDD

SVD

Liquid pipe

Strainer

Discharge gas pipe Suction gas pipe

To indoor

gas side

To indoor liquid side

Strainer

Capillary

tube

Capillary

tube

Capillary

tube

Check

valve

Strainer

SVS SVS

SVSS

SVDD

SVD

Liquid pipe

Strainer

Discharge gas pipe Suction gas pipe

To indoor

gas side

To indoor liquid side

Strainer

Capillary

tube

Capillary

tube

Capillary

tube

* RBM-Y2802FE has three “SVS” valves and two “SVD”.

Check

valve

Strainer

SVS SVS

SVSS

SVDD

SVD

Liquid pipe

Strainer

Discharge gas pipe Suction gas pipe

To indoor

gas side

To indoor liquid side

Strainer

Capillary

tube

Capillary

tube

Capillary

tube

SVS

RBM-Y1122FE

Propeller fan

Fan motor

Main heat exchanger

RBM-Y1802FE

Wind

Sub heat exchanger

Front side

(Right)

Sub heat

exchanger

Rear side

(Left)

Wind

RBM-Y2802FE

Functional part name

Solenoid valve

(Discharge gas block valve)

SVD

1) High pressure gas circuit during heating operation (Suction gas block valve)

SVS

1) Low pressure gas circuit during cooling operation (Pressure valve)

SVDD

1) For pressurizing when No. of heating indoor units increases. (Reducing valve)

SVSS

1) For recovery of refrigerant of the stopped indoor unit of which cooling thermo-OFF

2) For reducing pressure when No. of heating indoor units decreases.

Functional outline

System Refrigerant Cycle Drawing

Refrigerant piping systematic diagram in system

For the selection of each operation mode, see the table below: “Stop Once” means the system does not operate for 3 minutes after operation before update has stopped.

After update

All cooling operation Mainly cooling, partly Mainly heating, partlyAll heating operation

(OFF) (ON) (ON) (ON)

All cooling operation

(OFF)

Mainly cooling, partly

heating cooperation (ON)

Before update

Mainly heating, partly

cooling operation (ON)

All heating operation

(ON)

Note) Phrases in parentheses in the table indicate status of 4-way valve.

Operation continues Operation continues Operation continues

(ON ® OFF) (As ON) (As ON)

Stop Once Operation continues Operation continues

(ON ® OFF) (As ON) (As ON)

Stop Once Operation continues Operation continues

(ON ® OFF) (As ON) (As ON)

<ON-OFF list of Flow Selector Unit (FS Unit) valve>

Indoor operation mode

1. Stop (Remote controller OFF) <All system stop>

2. Cooling ther mo-OFF

3. Cooling ther mo-ON

4. Heating ther mo-OFF

5. Heating ther mo-ON

6. “E04” error is being detected

SVD SVDD SVS SVSS

(High pressure(Pressure valve (Low pressure (Reducing valve

circuit valve) <For delay>) circuit valve) <For delay>)

OFF OFF OFF ON

OFF OFF OFF ON

OFF OFF ON ON

ON OFF OFF OFF

OFF ON OFF OFF

heating cooperation cooling operation

Operation continues Operation continues Stop once

(OFF ® ON) (OFF ® ON) (OFF ® ON)

Outline of control valve output of FS unit (Basic operation)

Check Code List

Main

remote

controller

display

Communication error between indoor and remote controller

E01

(Detected at remote controller side)

E02

Sending error of remote controller

Communication error between indoor and remote controller

E03

(Detected at indoor side)

Communication circuit error between indoor and outdoor

E04

(Detected at indoor side)

E06

Decrease of No. of indoor units

Communication circuit error of indoor and outdoor

E07

(Detected at outdoor side)

E08

Duplicated indoor addresses

E09

Duplicated master remote controllers

E10

Communication error in indoor P. C. B ass’y

E12

Automatic address start error

E15

No indoor automatic address

E16

No. of connected indoor units / Capacity over

E18

Communication error between indoor header and follower units

E19

Outdoor header units quantity error

E20

Other line connected during automatic address

E23

Sending error in communication between outdoor units

E25

Duplicated follower outdoor addresses

E26

Decrease of No. of connected outdoor units

E28

Follower outdoor error

E31

IPDU communication error

F01

Indoor TCJ sensor error

F02

Indoor TC2 sensor error

F03

Indoor TC1 sensor error

F04

TD1 sensor error

F05

TD2 sensor error

F06

TE1 sensor error

F07

TL sensor error

F08

TO sensor error

F10

Indoor TA sensor error

F12

TS1, TS2 sensor error

F13

TH sensor error

F15

Outdoor temp sensor misconnecting (TE, TL)

F16

Outdoor pressure sensor misconnecting (Pd, Ps)

F23

Ps sensor error

F24

Pd sensor error

F29

Indoor other error

F31

Outdoor EEPROM error

H01

Compressor break down

Magnet switch error

H02

Overcurrent relay operation Compressor error (lock)

H03

Current detect circuit system error

Check code name

Main

remote

controller

display

H04

Comp 1 case thermo operation

H06

Low pressure protective operation

H07

Oil level down detective protection

H08

Oil level detective temp sensor error

H14

Comp 2 case thermo operation

Oil level detective circuit error

H16

Magnet switch error Overcurrent relay operation

L03

Duplicated indoor header units

L04

Duplicated outdoor line addresses

Duplicated indoor units with priority

L05

(Displayed on indoor unit with priority)

Duplicated indoor units with priority

L06

(Displayed in unit other than indoor unit with priority)

L07

Group line in individual indoor unit

L08

Indoor group/Address unset

L09

Indoor capacity unset

L10

Outdoor capacity unset

L17

Inconsistency error of outdoor units

L18

FS unit error

L20

Duplicated central control addresses

L28

Over No. of connected outdoor units

L29

No. of IPDU error

L30

Auxiliary interlock in indoor unit

L31

IC error

P01

Indoor fan motor error

P03

Discharge temp TD1 error

P04

High-pressure SW detection error

P05

Phase-missing detection / Phase order error

P07

Heat sink overheat error

P10

Indoor overflow error

P12

Indoor fan motor error

P13

Outdoor liquid back detection error

P15

Gas leak detection

P17

Discharge temp TD2 error

P19

4-way valve inverse error

P20

High-pressure protective operation

P22

Outdoor fan IPDU error

P26

G-TR short protection error

P29

Comp position detective circuit system error

P31

Other indoor unit error (Group follower unit error)

—

Error in indoor group

—

AI-NET communication system error

—

Duplicated network adaptors

Check code name

Address Setup

Pre-check for address setup

1. Check that all the rotary switches, SW01, SW02, and SW03 on the interface P. C. board of the outdoor unit are set up

to “1”.

2. If other error code is displayed on 7-segment [B], remove the cause of trouble referring to “9. Troubleshooting”.

3. Check that [L08] is displayed on 7-segment display [B] on the interface P. C. board of the outdoor unit.

(L08: Indoor address unset up) (If the address setup operation has already finished in service time, etc, the above check code is not displayed, and

only [U1] is displayed on 7-segment display [A].)

Interface P. C. board

7-segment display [A] 7-segment display [B]

SW01 SW02 SW03

1. Display check on remote controller (In case of wired remote controller)

Check that a frame as shown in the following left figure is displayed on LC display section of the remote controller.

GOOD

TEMP.

FILTER

TEST

RESET

(Power and operation stop)

If a frame is not displayed as shown in the above right figure, the power of the remote controller is not normally turned on. Therefore check the following items.

• Check power supply of indoor unit.

• Check wiring between indoor unit and remote controller.

• Check whether there is cutoff of cable around the indoor control P. C. board or not, and check connection failure of

connectors.

• Check failure of transformer for the indoor microcomputer.

FAN

TIMER SET

SWING/FIXTIME

UNITSET CL

Normal status

ON / OFF

MODE

VENT

GOOD

FILTER RESET

(Power is not normally turned on.)

TEMP.

TIMER SET

SWING/FIXTIME

TEST

Abnormal status

ON / OFF

FAN

MODE

VENT

UNITSET CL

Automatic Address Setup

Without central control : To the address setup procedure 1 With central control: To the address setup procedure 2

(Example)

Address setup procedure

Cable systematic diagram

(However, go to the procedure 1 when the central control is performed in a single refrigerant line.)

In case of central control in a single refrigerant line

Outdoor

Indoor

Remote

controller

To procedure 1

Central

remote controller

Indoor

Remote

controller

Outdoor

Indoor

Remote

controller

Central

remote controller

Indoor

Remote

controller

In case of central control over refrigerant lines

Outdoor

Indoor

Remote

controller

To procedure 2

Indoor

Remote

controller

Outdoor

Indoor

Remote

controller

Central

remote controller

Indoor

Remote

controller

Address setup procedure 1

1. Tu rn on power of indoor/outdoor units.

(In order of indoor

2. After approx. 1 minute, check that U. 1. L08 (U. 1. flash) is displayed in

7-segment display section on the interface P. C. board of the outdoor unit.

3. Push SW15 to start the setup of the automatic addressing.

(Max. 10 minutes for 1 line (Usually, approx. 5 minutes))

4. When the count Auto 1 ® Auto 2 ® Auto 3 is displayed in 7-segment

display section, and it changes from U. 1. - - - (U. 1. flash) to

U. 1. - - - (U. 1. light) , the setup finished.

5. When performing an automatic address setup on a single refrigerant

line with central control, connect relay connected between [U1, U2] and [U3, U4] terminals in the header unit.

®®

® Outdoor)

®®

REQUIREMENT

•When a group control is performed over the multiple refrigerant lines, be sure to turn on the power supplies of all the indoor units connected in a group at the time of address setup.

• If turning on the power for each refrigerant line to set up address, a header indoor unit is set for each line. Therefore, an alarm code “L03” (Duplicated header indoor units) is output in operation after address setup. In this case, change the group address from the wired remote controller for only one header unit is set up.

Header unit interface P. C. board

2 3 4

1ON2 3 4

SW11

SW12

SW13

11 2 3 4

SW09SW08

SW14

1 2 3 4

SW10

ON ONON ON

1ON2 3 4

2 3 4

SW06

SW07

(Example)

Cabling systematic

diagram

Header unit interface P. C. board

SW04

SW05 SW15

D600 D601 D602 D603 D604

SW01

SW02 SW03

111

2, 4

U1 U2

U3 U4

For internal wiring between indoor and outdoor

Group control over

multiple refrigerant lines

Outdoor

Indoor

Remote

controller

For wiring of central control system

Outdoor

Indoor

Remote

controller

For internal wiring between outdoor units

controller

U5 U6

Indoor

Remote

Continued

U1 U2

For internal wiring between indoor and outdoor

U3 U4

For wiring of central control system

U5 U6

For internal wiring between outdoor units

Address setup procedure 2

1. Using SW13 and 14 on the interface P. C. board of the outdoor unit in each system, set up the address for each system. (At shipment from factory: Set to Address 1)

Note) Be careful not to duplicate addresses with the other refrigerant line.

Line address switch on outdoor interface P.C. board

Line

address

1 2 3 4 5 6 7 8

9 10 11 12 13 14

SW13 SW14

12341234

ЧЧЧЧЧ Ч ×××

×× ××

× ××

××× × × × × ×× × × × ×××× × ×× ×× × × × ××× × ×

¡ ¡

¡¡¡

¡ ¡ ¡ ¡

¡ ¡

Line

address

15 16 17 18 19 20 21 22 23 24 25 26 27 28

(¡ : Switch ON, × : Switch OFF)

SW13 SW14

12341234

××

¡ ¡ ¡

¡¡¡¡

××××

×××

¡¡

× ××

¡¡

×× ×

¡ ¡

× ×

¡ ¡¡

× ×

¡¡

×××

××

¡¡

× ×

¡ ¡

¡¡

: Is not used for setup of system address. (Do not change setup.)

2. Check that the relay connectors between [U1, U2] and [U3, U4]

terminals are not connected in all the outdoor units to which the central control is connected. (At shipment from factory: Connector not connected)

3. Tu rn on power of indoor/outdoor. (In order of indoor

4. After approx. 1 minute, check that 7-segment display is

U.1.L08 (U.1. flash) on the interface P.C. board of the outdoor unit.

5. Push SW15 to start the setup of automatic addressing.

(Max. 10 minutes for 1 line (Usually, approx. 5 minutes))

6. When the count Auto 1 ® Auto 2 ® Auto 3 is displayed in

7-segment display section, and it changes from U. 1. - - - (U. 1. flash) to U. 1. - - - (U. 1. light) , the setup finished.

7. Procedure 4. to 6. are repeated in other refrigerant lines.

8. How to set up the terminal resistance

When all the address setups have finished in the same refrigerant circuit system, put the terminal resistance in the same central control line into one.

• Remain only SW30-2 of the header outdoor unit with address 1 as

ON. (With end terminal resistance)

• Set up SW30-2 of the other header outdoor units to OFF.

(Without terminal resistance)

9. Connect the relay connector between [U1, U2] and [U3, U4] of the

header unit for each refrigerant line.

10. Then set up the central control address.

(For the central control address setup, refer to the Installation manual of the central control devices.)

®®

® outdoor)

®®

Header unit interface P. C. board

1ON2

SW30

1ON2 3 4

SW11

SW12

SW13

ON ONON ON

1ON2 3 4

2 3 4

11 2 3 4

SW06

SW07

SW09SW08

××

¡¡ ¡¡

SW30

1ON2 3 4

SW14

1 2 3 4

SW10

¡ ¡ ¡ ¡

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