Guideline for Startup of VRF systems - Slovklima · PDF fileGuideline for Startup of TOSHIBA VRF systems ... on the requirements of a particular indoor unit (by DN-defined code 04)

Guideline for Startupof VRF systems

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Guideline for Startup - Page 2

Contents

Content Page Contents ………………………………………………………………………………….…. 2

Introduction .………………………………………………………………………………… 3 Before beginning of Startup

Startup …….………………..………..………………………………………………… 4 - 11

Appendix "Opening the injectors" ………………...…………………………………….. 12

Appendix "DIP switches" ……………..…………………………………………….. 13 - 15

Appendix „Readdressing“ …………...……………………………………………… 16 - 17

Appendix „DN code“ ………………...………………………………………………. 18 - 21

Appendix „Wiring“ ………………………………………………………………………… 22

Appendix „Calculation of the amount of Refrigerant “ ……………………..……. 23 - 27

Retrieval of outdoor units ……………….....……………………………………….. 28 - 32

Refrigeration scheme …………………..…...……………………………………… 33 - 40

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Guideline for Startup of TOSHIBA VRF systems

Read this guide, the installation instructions and the instructions for all components and devices carefully before you start working. The Toshiba Mini-SMMS, SMMSi and SHRMi systems are highly developed systems whose components are well designed and developed. Therefore, use these systems never with components of other manufacturer. The installation, startup and servicing should be performed only by qualified and trained people.

Before beginning of Startup 1. Check to see if you can work on all devices safely and securely. 2. Check if all units were installed as stated in installation manual and if any

transportation safety of the fans are removed. 3. Verify that for all devices future maintenance and repairs can be performed

(eg, inspection openings in ceilings) 4. Verify that the installation complies with the interpretation

(Pipe sizing, distribution ...).

5. Check the installation position of the valve and the insulation of the entire pipeline system.

6. Check all electrical cables and wiring of the various bus lines. (See Appendix) 7. Check that all equipment is properly grounded and your electrical connection

complies with the applicable standards and regulations. 8. Check that the oil heaters were turned on in time (depending on ambient

temperature 2-5 hours) before the first operation of the compressors. (After turning on the power supply for external devices the heaters turn on automatically.)

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The Startup 1. Leak test

After installation of pipes please perform a leak test in accordance with applicable technical regulations. Do not exceed the maximum working pressure of 37.3 bar. Recommendation:

1. min. 24 hours from 30 to 37 bar with nitrogen 5.0 2. To avoid that nitrogen flows over into the outdoor unit, we recommend to connect the pipes to the outdoor unit not before the leak test of the lines and indoor units. The connection pipe - Outdoor unit should be pushed away with max. 20 bars.

2. Evacuation (SHRMi view)

Evacuate the system with two-stage vacuum pump according to the rules of the art. (The oil balance pipe must only be evacuated when several external devices can be connected in a refrigeration cycle.)

3. Fill in refrigerant

Fill in the calculated amount of refrigerant (Refrigerant R410A) liquid into the pipe system. If the total capacity cannot be filled equally, the rest can be liquid filled slowly during operation in the suction line. (The calculation of the amount of refrigerant can be done by Dyna Doc Software, the tables in the Installation Manual and on the table in Appendix "Calculation of refrigerant charge.") The calculated amount should be recorded legibly and durably on the header outdoor unit.

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4. Open the valves of the outdoor unit (SMMSi view).

5. Central remote controller BUS Let the white connector, which connects the indoor unit-BUS (U1/U2) to the central controller-BUS (U3/U4) opened.

6. Set DIP switch

Set on the header outdoor unit the necessary and desired settings with the Dip switch. (Please note system „DIP switch“)

(If multiple refrigeration circuits are controlled by a central controller device, the cooling circuits are addressed with the help of the DIP switches on SW13 and SW14.)

U5/U6: Bus between outdoor units U3/U4: Bus to the central control unit (TCC‐Link) U1/U2: Bus between outdoor/indoor units

Suction line

Oil equalization line

Liquid line

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7. Power indoor units (IDU) Turn on the power supply of the indoor units.

(The injection valves of the indoor units are opened by default and close when turn on the power supply. If you are not sure whether the valves are open, evacuate simultaneously to the suction and liquid line and note the attachment "open the injectors")

(As long as the indoor units are not addressed, they can be switched on via the remote control.)

8. Power outdoor unit (CDU)

Turn on the power supply of the outdoor units. Verify that L1, L2, L3 and N are properly in place. ( Mini-SMMS only L1 and N )

The outdoor units address themselves immediately. The master outdoor unit (U1/U2 bus to IG is only connected to the master unit) displays after some time [U.1.L08]. The fault L08 appears, because the IGs are not addressed yet. At follower will be displayed after this step U2---, U3--- and U4---.

9. Automatic adressing Start the automatic addressing of indoor units. The rotary switches SW1, SW2, SW3 are on 1/1/1, press at the master outside unit the switch SW15 for 5 sec.

The display shows successively AUTO1, AUTO2, AUTO3 .... till AUTO9. (The address can take depending on the size of the system up to 15 min.)

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(This display is independent of the number of connected indoor units. With this display only the various steps of addressing are displayed.)

After the last step, the outdoor unit starts the electronics new. If the outdoor unit displays [U.1.---], the addressing is completed.

10. Check IDU number After addressing has to be checked, with these settings, on the rotary switches

SW1, SW2, SW3, how many indoor units were found through the addressing: SW1, SW2, SW3 = 1/4/3.

(On 1st and 2nd place of display the number of connected indoor units is displayed. On 3rd place a C is displayed for COOLING. On 4th and 5th place the number of units is displayed which demand cooling power currently. If all units were turned off, on the 5th place is displayed 0.)

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This example shows 4 devices connected, 0 devices require cooling capacity

(If at addressing less devices have been found than are connected, the bus wiring and the power supply of the non-detected devices can be checked. (The "not found" (= not addressed) devices can be located most easily by turning on all indoor units at the remote controls -> unaddressed indoor units cannot be turned on.) If the reason for not addressing is resolved, you can insert the affected indoor unit later in the system, or delete the previously assigned addresses and start the new automatic addressing (see Appendix "readdressing")).

(11.) FS-BOX (FlowSelector) connection

For SHRMi systems a specialty should be noted: When multiple indoor units are connected to a FS box, make sure that:

1. The FS-Box is connected to the master unit 2. At all follower of Group the DN code 0E has to be set to 0001. (See Appendix DN code) (If that is not the case, disturbances may occur. Now the indoor units are powered up and tested.)

12. Fan test run Check the operation of the condenser fan first. Set SW1/SW2/SW3 on 2/1/4 and push SW04 for 2 seconds. At display the

speed of the fan is shown. So you can check the system up to unwanted noise. The speed can be adjusted and tested according to the table below. Always start at the highest speed.

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Stop the test by pressing 1x SW05. 13. Single - test run Make a unit test run. The system controls if all found indoor units belong

actually to own refrigeration system and are operational.

Above 10 ° C ambient temperature the test has to be carried out in the cooling mode. Below 10 ° C the heating mode is required. - For cooling mode test set on the rotary switches: SW1 = 2, = 1, SW2, SW3 = 1 - For heating mode test set on the rotary switches: SW1 = 2, = 2 SW2, SW3 = 1 At display [JC] appears for Cool Mode or [JH] for Heat Mode. Then press SW04 for 5 seconds to start the test. After termination of the test the system shows the number of incorrectly connected devices.

7-digit display [B] fan speed 7-digit display [B] fan speed

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This example shows: 2 incorrectly connected devices

Exampel. 0 error = [0P] 2 error = [2P] . . .

(If errors occur, run the test again in another mode (Cool or Heat). If errors still occur, then check the wiring and piping connections for the affected devices. Through pressing the SW05 the addresses of the affected internal device addresses are displayed.)

To end the test, turn the switches SW1, SW2 and SW3 on 1/1/1 14. Test run cooling or heating

Set the rotary switch to the desired test run mode: Cooling: SW1,SW2,SW3=> 2/5/1 Heating: SW1,SW2,SW3=> 2/6/1) Start the test run through pressing SW04 for 5 seconds. To stop the test run, turn the switches SW1, SW2, SW3 to 1/1/1.

15. Follower systems Operate the steps 1-14 to master outdoor units of all other refrigeration cycles. If no central control device (central control, on-off controller, LON Gateway ...) will be used, the

addressing is completed.

16. Central controller

To use the central controller devices, it is necessary to join the central controller bus and to set the DIP - switch SW30 (see Appendix DIP switch).

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To start up the central controller, please use the appropriate manuals.

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Appendix "Opening the injectors" The injection valves of indoor units can be forced open. To do this, set the leadership outdoor unit SW1, SW2, SW3 on 2/3/1 The display shows [P. in]

Press SW04for about 2 seconds. The display shows [P. FF]. The injection valves of indoor units open now completely.

CAUTION: The valves remain open for only 2 minutes. In order to keep open the valves longer, e.g. for evacuating the system, just turn off the power to the indoor unit when the valves are "open". (In case of power failure, the valves stay in current position.)

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Appendix "DIP switches"

DIP switches can be switched only with power supply.

1. Priorities for mode adjustment Over the DIP switch SW11 on master outdoor unit [U1] different priorities for the mode adjustment of the corresponding system cycle can be selected.

Priority: Selected indoor unit Bit 1 Bit 2 Bit 3 Bit 4 ON

OFF In this setting, the outdoor unit switches depending on the requirements of a particular indoor unit (by DN-defined code 04) between the modes back and forth. I.e. This unit is in cooling mode => outdoor unit switches to cooling. The devices in heating switch off.

Priority: Cooling Bit 1 Bit 2 Bit 3 Bit 4 ON

OFF If at this setting an indoor unit is switched to cooling mode, then the outdoor unit is connected in the cooling mode, and all indoor units that are connected in the heating mode switch in Stand By mode.

Priority: According to No. Of indoor units Bit 1 Bit 2 Bit 3 Bit 4 ON

OFF In this setting, the outdoor unit switches depending on the requirement of the indoor units between modes back and forth. I.e. are more devices in cooling mode => outdoor unit switches to cooling. The devices in heating switch off, or vice versa.

Priority: Heating (Factory setting) Bit 1 Bit 2 Bit 3 Bit 4 ON

OFF If at this setting an indoor unit is switched to heating mode, then the outdoor unit is connected in the heating mode, and all indoor units that are connected in the cooling mode switch in Stand By mode.

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2. Increasing the pressure of the condenser fan (only SMMSi / SHRMi) On the DIP switch SW10/Bit 2 on master outdoor unit [U1] different pressures of the condenser fan can be set. The factory setting of the unit is set for outdoor operation. If an exhaust pipe is built up to the unit, the pressure should be increased. Once you are outside the operating limits, may cause damage to the electronics!

3. System address at several outdoor units groups When multiple cooling circuits are controlled by a central control unit, the individual circuits have to be addressed over the DIP switch SW13 and SW14. The adjustment of the addresses occurs only at the master outdoor units [U.1.].

If the safety gate on the unit is dismantled, the external pressure can be increased by 10 Pa

Setting the cooling circuit addresses

unused dip switches (do not change settings)

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4. Excessive internal device power Setup of Header Turn on Bit 2 of SW09 on the interface PC Board of header unit. (Setting to avoid error (E16), too high capacity of indoor units.)

5. Set first for startup of the central control. At all master outdoor units where the system address is not 1, the BIT 2 has to be set on DIP switch SW30 to Off. On System 1 Bit 2 has to remain at On. In several systems, a system must always be addressed with 1.

After the setting of addresses

Single system Group

Header unit Header unit

Header unit Follower Follower

Remote controller

Remote controller

Remote controller

Remote controller

Relays connector

Relays connector

Relays connector

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Appendix "Readdressing" 1. Fit in indoor units into a system: Method 1: Set, with help of a wired remote control the refrigerant circuit-, indoor unit-, group- and central address at the added interior part with unused values. See Appendix DN code. Recommended, if only a few indoor units will be added. Method 2: If a system is extended, or at the addressing an error occurred and an indoor unit is not found, you can insert either indoor units in a system, or delete the addresses of the indoor units and start the automatic addressing new. In both functions, the connector (U1/U2-U3/U4) to the central controller BUS (if connected) has to be separated and SW30 Bit 2 is set to On. Set on rotary switches SW01/SW02/SW03 on the header outdoor unit to the positions 2/14/2. The display shows [in. At].

Push SW04 for at least 5 seconds. The display shows in sequence AUTO1, AUTO2, AUTO3 .... till AUTO9.

Then reset SW30 Bit 2 and connect the connector again.

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2. Delete the refrigerant circuit-, indoor units- and group addresses:

Set the rotary switches SW01/SW02/SW03 on the master outdoor unit to the positions 2/1/2. The display shows [A.d.b.u.S.].

Press SW04 for at least 5 seconds. The display shows [A.D. . C.I.]. Hereby the refrigerant circuit address (DN code 12), indoor unit address (DN13) and the group addressing is deleted (DN 14).

Set the rotary switch again to 1/1/1 and restart the automatic addressing when [U1L08] is shown on display. 3. Delete the central addresses: To delete the central addresses (DN 03) set the rotary switches SW01/SW02/SW03 on the master outdoor unit to the positions 2/2/2. The display shows [A.d.nET.]. Press SW04 for at least 5 seconds. The display shows [A.D. . C.I.]. Herewith the central addresses are deleted. Central addresses cannot be assigned by the external device, but only with a central remote control or automatically each indoor unit individually with a wired remote control.

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Appendix "DN-code"

Before changing the DN menu make always sure that you are in the

right unit and DN code. Incorrectly use can cause irreparably damage.

Instructions to amend DN codes with the cable remote controller RBC-AMT32E

1. Press simultaneously SET + CL + TEST buttons for 4 seconds or more.

(In a group control, the firstly displayed number is the address of the header unit.)

2. In a group control, select with UNIT button that indoor unit wherein the values have to be changed. (The fan of the selected indoor unit is turned on.)

3. Use the buttons to adjust the temperature to the desired DN code. 4. Change with the buttons for setting the time the value of the DN codes. 5. Press SET to confirm. 6. To save and exit the menu, press TEST.

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Instructions to amend DN codes with the cable remote controller RBC-AMS51E-ES

1. Press the menu button to access the menu 2. Press the menu button and the temperature down button simultaneously

for at least 5 seconds to reach the next submenu. 3. Then go with the arrow keys to point "DN Settings" and press „F2“. 4. Select with help of arrow keys the code which has to be changed and

change between both fields by using „F1“ and „F2“ button 5. After changing of the code, press „FIX“ to save. 6. For exit press the „Back“ button.

The most important DN codes Code Function 03 Central address 10 Indoor unit type 11 Indoor unit capacity 12 Refrigerant address 13 Indoor unit address 14 Single or group control 28 Activate automatic restart after power default 0F Heat pump or cooling only function 32 Temperature sensor selection (device or remote controller)

Menu / FIX Back

Temperature + / -

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DN-Code Chart

DN‐ Code Name Description

01 Intervall filter alarm time Filter sign displayed after selected time has elapsed ‐ or by external pressure switch (CN70)

0000=inactive 0001=150 Std. 0002=250 Std. 0003=500 Std. 0004=1000 Std. 0005=ext. switch (CN70)

02 protection intensity Halved the values of DN01 0000=Standard 0001=high pollution in space

03 Network address In conjunction with the central control unitAdjustment: 0‐64 (0000‐0064)

0001=address 1, etc. 0099=undefined

04 Priority of a specific indoor unit

On the outer part SW11Bit 1+2 on = Priority specific indoor unit

0000=No priority 0001=Priority

06 Change of heating temperature (setpoint value)

Adaptation to space heating temperature conditions. Adjustment: 0‐10°C (0000‐0010)

0001=+1°C, etc. 0002=+2°C (default) 0010=+10°C

0d AUTO Mode Deactivating of Auto mode 0000=available 0001=not available

OE

Header/Slave Internal parts (For SHRMi systems, when using distribution boxes)

Flowswitch box conneted to the header Set all followers of the group to 0001

0000=Single unit (Header) 0001=Follower (Slave)

0F Only cooling Deactivating of HEAT & AUTO Mode 0000=heat pump 0001=cooling only

2d Only heating Deactivating of COOL & DRY 0008=heating only

10 Indoor type Set according to design of the unit

0000=1‐way cassette (Series SH)0001=4‐way cassette (Series H) 0002=2‐way cassette (Series WH) 0003=1‐way cassette (Series YH) 0004=series duct (Series BH) 0007=Ceiling Type (Series H) 0008=High‐wall Type (Serie H + MH) 0010=Floor Standing Cabinet Type 0011=Floor Standing Concealed Type 0012=Floor Standing Type (14‐16 kW) 0013=Floor Standing Type (4,5‐11,2 kW) 0014=4‐way cassette (Serie MH) 0016=Fresh Air Intake Inndoor Unit (HFE) 0050=VN‐Air to Air Heat Exchanger

11 Indoor unit capacity Set according to the type of the device (Power Reduction NOT possible!)

0001=2,2kW 0003=2,8kW 0005=3,6kW 0007=4,5kW 0009=5,6kW 0011=7,1kW 0012=8,0kW 0013=8,5kW

0015=9,0kW 0017=14,0kW 0018=16,0kW 0021=22,4kW 0023=28,0kW 0099=unfixed

12 Refrigerant cycle address Adjustment: 0‐30 (0000‐0030) 0001=system 1, etc. 0099=unfixed

13 Indoor unit address Adjustment: 0‐64 (0000‐0064) 0001=address 1, etc. 0099=unfixed

14 Group master/Slave multiple indoor units to a remote control

0099=factory setting 0000=Single indoor unit 0001=group master 0002=group slave

19 Louver functions Availability/Type Louver 0000=off0001=AC motor 0004=stepper motor

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DN‐ Code Name Description

1b Minimum requirement of HEAT or COOL Minimum time to the execution of the operating mode 0000=5 minutes

0001=4 minutes

1C Temperature Offset in cooling mode

Adaptation of the cooling temperature at ambient conditions. Adjustment: 0‐10°C (0000‐0010)

0000=0°C0004=4°C 0005=5°C 0010=10°C

1E Neutral Zone in Auto mode

Switching temperature difference between COOL and HEAT. (Accuracy = data value / 2) Adjustment: 0‐10 (0000‐0010)

0003=3°C (TS +/‐ 1,5 °C) 0010=10°C

1F Max. Temperature COOL Cooling mode maximum temperature setting 0029=29°C, etc.

20 Min. Temperature COOL Cooling mode minimum temperature setting 0018=18°C, etc.

21 Max. Temperature HEAT Heating mode maximum temperature setting 0029=29°C, etc.

22 Min. Temperature HEAT Heating mode minimum temperature setting 0018=18°C, etc.

23 Max. Temperature DRY Dry mode maximum temperature setting 0029=29°C, etc.

24 Min. Temperature DRY Dry mode minimum temperature setting 0018=18°C, etc.

25 Max. Temperature AUTO Auto mode maximum temperature setting 0029=29°C, etc.

26 Min. Temperature AUTO Auto mode minimum temperature setting 0018=18°C, etc.

28 Auto restart enable Selective restart after power failure 0000=off0001= on

2A Ext. Error input (CN70) Function assignment contact CN70. (Series 2 wall unit ‐> condensate pump)

0000=ext. filter input 0001=ext. alarm input 0002=ext. humidifier input (factory setting)

2E HA connector(CN61) Function assignment contact CN61 (HA terminal)

0000=off0001=restart in the same mode, such as when

switching off 0002=fire alarm input

31 Ext. Fan control (CN32) Activating of „FAN“ button on the remote controller 0000=off (factory setting) 0001=CN32 ON/OFF

32 Selection TA Sensor Adaptation to ambient conditions 0000=Sensor on air conditioner 0001=remote sensor

33 Temperature unit Display TS on remote controller 0000=°C0001=°F (Fahrenheit)

36 Actual display on remote controller

Current actual temperature is displayed on remote control display

0000=Setpoint Temperature 0001=Actual Temperature

5d Airflow adjustment For very large room heights, when using a special filter or if called for stronger external pressure

Series duct: 0000=Standard (40 Pa) 0001=average pressure (70 Pa) 0003=high pressure (90/100 Pa) 0005=low noise 0006=low pressure (20 Pa) 4‐way cassettes, ceiling units: 0000=Standard filter 0001=Super long‐life‐filter 0003=high ceilings from 3.5 m (in group circuit)

60 Timer‐lock Activation timer operation in wired remote controller 0000=on0001=off

62 Coander Effect Only at 4‐way cassettes 0000=deactivated 0001=Jumper change from C112 to CN110

8b Correction of start temperature HEAT Only DI wall units 0000=normal

0001=high temperature

8c Forced defrost After activation it resets automatically 0000=deactivated 0001=activated

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Appendix „Wiring“ 1. Conductor

2. BUS cable and shielding All bus lines have to be executed, depending on the length, as a 2-wire, shielded, flexible, 1.5 mm² strong lines. The BUS line between the devices should be looped, in series, from the first to the last device. Connect the indoor unit-BUS (U1/U2) only to the header outdoor unit. The shielding of the bus cable should be looped at the indoor units, but without being connected to ground. The shielding should be placed only on the outdoor unit on Earth.

3-phase, 50 Hz, 380-415 V, earth leakage breaker, manual switch Outdoor unit Current source Indoor unit Current source

Earth

1-phase, 50 Hz, 220-240 V, earth leakage breaker, power switch

________________________________________________ Model Outdoor unit-current source MMY-AP***T8, HT8 3-phase, 380-415 V, 50 Hz___

branching box

Central Remote controller

Outdoor Units Indoor Units Remote controller

Open Looped GROUNDED

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Additional refrigerant charge amount per liquid pipe 1m

(Table 1)

Compensationby outdoor HP

(Table 2)

Real length of liquid pipe

Appendix „Calculation of the amount of Refrigerant “

MiNi-SMMS

Calculate the additional amount of refrigerant from the following:

Additional amount of refrigerant by pipe length (Table 1) Pipe dia at liquid side

Standard amount of refrigerant kg/m Total pipe length at each liquid side

Additional amount of refrigerant pipe dia at

each liquid side kg

Ø 6.4 0.025 × = kg

Ø 9.5 0.055 × = kg

Additional amount of refrigerant by pipe length (A) kg

Next, refer to the following table for the corrective amount of refrigerant (B) by system capacity.

Compensation by outdoor HP (Table 2)

Outdoor unit capacity type Compensation by outdoor HP kg

0401 Type –0.8

0501 Type –0.4

0601 Type 0

Finally add the additional amount of refrigerant by pipe length (A) to the corrective amount of refrigerant by system

capacity (B). This is the final additional amount of refrigerant.

If the result is indicated as a negative, do not add any refrigerant. Do not add the refrigerant (=0kg).

Additional refrigerant charge amount at site (R)

Additional amount of refrigerant by pipe length (Table 1) kg

Compensation by outdoor HP (Table 2) kg

Additional amount of refrigerant (R) kg

= x +Additional refrigerant charge R (kg) amount at site

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SMMSi Prefilled refrigerant

Heat pump type

Outdoor unit type MAP080 MAP100 MAP120 MAP140 MAP160

Charging amount (kg) 11.5

Table 1

Pipe dia at liquid side



each liquid side kg

Ø 6.4 0.025 × = kg

Ø 9.5 0.055 ×

Ø 12.7 0.105 x

Ø 15.9 0.160 x

Ø 19.1 0.250 x

Ø 22.2 0.350 × = kg


Table 2

Combined HP

(HP) Combined outdoor units (HP)

C (Corrective amount of

refrigerant) (kg)

Standard type

8 8 HP – – – 1.5

10 10 HP – – – 2.5

12 12 HP – – – 3.5

14 14 HP – – – 8.5

16 16 HP – – – 10.5

18 10 HP 8 HP – – 0.0

20 10 HP 10 HP – – 3.0

22 12 HP 10 HP – – 5.0

24 12 HP 12 HP – – 7.5

26 16 HP 10 HP – – 8.5

28 16 HP 12 HP – – 9.5

30 16 HP 14 HP – – 11.5

32 16 HP 16 HP – – 12.5

34 12 HP 12 HP 10 HP – 3.0

36 12 HP 12 HP 12 HP – 4.0

38 16 HP 12 HP 10 HP – 6.0

40 16 HP 12 HP 12 HP – 7.0

42 16 HP 14 HP 12 HP – 8.0

44 16 HP 16 HP 12 HP – 10.0

46 16 HP 16 HP 14 HP – 12.0

48 16 HP 16 HP 16 HP – 14.0

16 8 HP 8 HP – – 0.0

24 8 HP 8 HP 8 HP – -4.0

26 10 HP 8 HP 8 HP – -4.0

28 10 HP 10 HP 8 HP – -2.0

30 10 HP 10 HP 10 HP – 0.0

32 8 HP 8 HP 8 HP 8 HP -6.0

High Efficiency type

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34 10 HP 8 HP 8 HP 8 HP -6.0

36 10 HP 10 HP 8 HP 8 HP -6.0

38 10 HP 10 HP 10 HP 8 HP -6.0

40 10 HP 10 HP 10 HP 10 HP -5.0

42 12 HP 10 HP 10 HP 10 HP -4.0

44 12 HP 12 HP 10 HP 10 HP -2.0

46 12 HP 12 HP 12 HP 10 HP 0.0

48 12 HP 12 HP 12 HP 12 HP 2.0 Charging of refrigerant

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

liquid side.

• If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and

gas sides, operate the air conditioner in COOL mode, and then charge refrigerant into service port at the gas

side. In this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.

• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.

High Efficiency type

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SHRMi

Refilled refrigerant

Outdoor unit type MAP080 MAP100 MAP120 MAP140 MAP160

Charging amount (kg) 11.0

Additional refrigerant charge amount at

local site = Real length of

liquid pipe x

Additional refrigerant charge amount per

1m liquid pipe (Table 1)

x 1.3 +

Corrective amount of refrigerant depending on HP of co-operating outdoor units (Table 2)

Table 1 Pipe dia at liquid side



each liquid side kg

Ø 6.4 0.025 × = kg

Ø 9.5 0.055 ×

Ø 12.7 0.105 x

Ø 15.9 0.160 x

Ø 19.1 0.250 x

Ø 22.2 0.350 × = kg


Table 2

Equivalent HP Model name of outdoor units

MMY-

Combination of outdoor units MMY-

C (Corrective amount of

refrigerant) (kg) Unit 1 Unit 2 Unit 3

8 HP MAP0804* MAP0804* - - 2

10 HP MAP1004* MAP1004* - - 3

12 HP MAP1204* MAP1204* - - 8

14 HP MAP1404* MAP1204* - - 10

16 HP AP1614* MAP0804* MAP0804* - 0

18 HP AP1814* MAP1004* MAP0804* - 1.5

20 HP AP2014* MAP1004* MAP1004* - 3.5

22 HP AP2214* MAP1204* MAP1004* - 7.5

24 HP AP2414* MAP1404* MAP1004* - 8.5

26 HP AP2614* MAP1404* MAP1204* - 11

28 HP AP2814* MAP1404* MAP1404* - 12

30 HP AP3014* MAP1004* MAP1004* MAP1004* 2.5

32 HP AP3214* MAP1204* MAP1004* MAP1004* 5

34 HP AP3414* MAP1404* MAP1004* MAP1004* 6

36 HP AP3614* MAP1204* MAP1204* MAP1204* 8

38 HP AP3814* MAP1404* MAP1204* MAP1204* 9.5

40 HP AP4014* MAP1404* MAP1404* MAP1204* 11

42 HP AP4214* MAP1404* MAP1404* MAP1404* 12.5

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Charging of refrigerant

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

liquid side.

• If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and

gas sides, operate the air conditioner in COOL mode, and then charge refrigerant into service port at the gas

side. In this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.

• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.

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Retrieval of outdoor units (1) Display of System Information (Displayed on Header Outdoor Unit Only)

SW01 SW02 SW03 Display detail

1

1

3

Unused A B

2 System capacity A [...8]'-[48]:8 to 48 HP

B [HP]

3 No. of outdoor units A [...1]'-[...4]:1 to 4

B [...P]

4 No. of indoor units connected/ No. of units with cooling thermo ON

A [...0.]'-[48.]:0 to 48 (No. of units connected)

B [C...0]'-[C48]:0 to 48 (No. of units with cooling thermo ON)

5 No. of indoor units connected/ No. of units with heating thermo ON

A [...0.]'-[48.]:0 to 48 (No. of units connected)

B [H...0]'-[H48]:0 to 48 (No. of units with heating thermo ON)

6 Amount of compressor command correction

A Value displayed in hexadecimal format.

B

7 Release control A Normal: [r. ...], During release control: [r.1]

B –

8 Oil equalization control Normal: [oiL-0]

During oil equalization control: [oiL-1]

9

Oil equalization request A Displayed through LED segment lighting pattern

B

10 Refrigerant/oil recovery operation A Oil recovery in cooling: [C1], Normal: [C ...]

B Oil recovery in heating: [H1], Normal: [H ...]

11 Automatic addressing A [Ad]

B During automatic addressing: [... FF], Normal: [... ... ...]

12 Power pick-cut A [dU]

B Normal: [... ... ...], During 50-90% capacity operation: [_50-_90] While control is based on BUS line input: [E50-E90]

13

Optional control (P.C. board input) Displays optional control status A B Operation mode selection: During priority heating (normal) h.*. * . * . * .

Priority cooling c.* . * . * . * .

Heating only H.*. * . * . * .

Cooling only C.*. * . * . * .

Priority given to No. of indoor units in operation n.*. * . * . * .

Priority given to specific indoor unit U.*. * . * . * . External master ON/OFF: Normal * ....... * . * . * .

Start input *.1. * . * . * .

Stop input *.0. * . * . * . Night operation: Normal * . * . . . . . * . * .

Start input * . * . 1 . * . * . Snowfall operation: Normal * . * . * ..... *.

Start input * . * . * . 1 . * .

14 Optional control (BUS line input) Same as above

15 Unused

16 – A –

B –

If element F shown on sketch at right turned on: Header unit oil equalization request If element C shown on sketch at right turned on: Follower unit oil equalization request

29


(2) Display of Outdoor Unit Information (Displayed on Each Outdoor Unit)


1

1

1

A Outdoor unit No.: [U1] to [U4]

B Check code (only latest one displayed) If there is no check code, [– – –] is displayed. If there is sub-code, check code [* * *] and sub-code [– * *] are displayed alternately, for 3 seconds and 1 second, respectively.

<SW04> push SW function: Fan operation at outdoor unit with error. 7-segment display section A: [E.1] <SW04 + SW05> push SW function: Fan operation at outdoor unit without error. 7-segment display section A: [E.0] <SW05> push SW function: Fan operation function check mode is cancelled.

2 – A –

B –

3 Operation mode A Stop [... ...]

Normal cooling: [... C], Normal heating: [... H], Normal defrosting: [... J] B –

4 Outdoor unit HP capacity A 8 HP: [... 8], 10 HP: [... 10], 12 HP: [... 12], 14 HP: [14], 16 HP: [16]

B [...HP]

5

Compressor operation command * Operation data of each compressor is displayed in turn in 2 second intervals. If compressor No. 3 does not exist, [– –.– – –] is displayed. Normal: Compressor speed (rps) is displayed in decimal format.7-segment display (A/B): [C1.* * *] [C2.* * *] [C3.* * *] ... <SW04> push SW function: Switches to display of operating current (decimal value). 7-segment display (A/B): [i1.* * *] [i2.* * *] [i3.* * *]... Pressing of <SW05> restores normal display.

6 Outdoor fan mode A [FP]

B Mode 0 to 63: [... 0] to [63]

7

Compressor backup A [C.b.] B Displays compressor backup setting status

Normal: [... ... ...] Compressor No. 1 backup: [1 ... ...] Compressor No. 2 backup: [... 1 ...] Compressor No. 3 backup: [... ... 1]

8 – A –

B –

9

Control value output data Displays control output status of solenoid valve A B 4-way valve: ON / 4-way valve 2: OFF H. 1 ... ... ...4-way valve: OFF / 4-way valve 2: ON H. 0 ... ... ...

10 SV2: ON / SV5: OFF / SV6: OFF 2. ... 1 0 0 SV2: OFF / SV5: ON / SV6: ON 2. ... 0 1 0 SV2: OFF / SV5: OFF / SV6: ON 2. ... 0 0 1

11

SV3A: ON / SV3B: OFF / SV3C: OFF / SV3D: OFF 3. 1 0 0 0 SV3A: OFF / SV3B: ON / SV3C: OFF / SV3D: OFF 3. 0 1 0 0 SV3A: OFF / SV3B: OFF / SV3C: ON / SV3D: OFF 3. 0 0 1 0 SV3A: OFF / SV3B: OFF / SV3C: OFF / SV3D: ON 3. 0 0 0 1

12 SV41: ON / SV42: OFF / SV43: OFF 4. ... 1 0 0 SV41: OFF / SV42: ON / SV43: OFF 4. ... 0 1 0 SV41: OFF / SV42: OFF / SV43: ON 4. ... 0 0 1

13 SV3F: OFF A. ... ... ... 0 SV3F: ON A. ... ... ... 1

14 PMV1/PMV2 opening Displays opening data in decimal format (total opening) * * * * . P15 PMV4 Start Displays opening data in decimal format . . . * * * . P

16

Oil level judgment status Normal A [o L.]

B Initial display: [... ... ...], Oil level judgment result: [#.*.$] Displayed letters #, * and $ represent judgment results for compressor No. 1, 2 and 3, respectively (“0” for normal and “1” or “2” for low level).

<SW04> push SW function: * Pressing of <SW05> restores normal display.

Displays low level confirmed judgment result of each compressor A [L d.] B Compressor No. 1 low level being confirmed: [L ... ...]

Compressor No. 2 low level being confirmed: [... L ...] Compressor No. 3 low level being confirmed: [... ... L]

Error data

30


(3) Display of Outdoor Cycle Data (Displayed at Each Outdoor Unit)


1

1

2

Pd pressure data Pd pressure (MPaG) is displayed in decimal format. (MPaG: Approx. 10 times magnitude of kg/cm2G)

A B P d. * . * *

2 Ps pressure data Ps pressure (MPaG) is displayed in decimal format. P S. * . * *

3 PL pressure conversion data Converted PL pressure (MPaG) is displayed in decimal format. P L. * . * *

4 TD1 sensor data Temperature sensor reading (°C) is displayed

in decimal format. Letter symbol and data are displayed

alternately, for 1 second and display for 3 seconds, respectively.

Data with negative value is displayed as: [– *] [ * * *].

Letter symbol t d 1 ... ...

Data * * * .

5 TD2 sensor data Letter symbol t d 2 ... ...

Data * * * . *

6 TD3 sensor data Letter symbol t d 3 ... ...

Data * * * . *

7 TS sensor data Letter symbol t S ... ... ...

Data * * * . *

8 TE1 sensor data Letter symbol t E ... ... ...

Data * * * . *

9 TE2 sensor data Letter symbol t E 2 ... ...

Data * * * . *

10 TL sensor data Letter symbol t L ... ... ...

Data * * * . *

11 TO sensor data Letter symbol t o ... ... ...

Data * * * . *

12 TK1 sensor data Letter symbol F 1 ... ... ...

Data * * * . *


Data * * * . *


Data * * * . *


Data * * * . *


Data * * * . *

31


(4) Display of Outdoor Cycle Data (Displayed at Header Unit) * This method is used when displaying follower unit information on the 7-segment display of the header unit.


3 1 1-3

A [U.*], *: SW03 Setting No.+ 1 (Outdoor unit No. U2 to U4) B Check code is displayed (latest one only)

If there is no check code: [– – ]

2 Type of compressor installed A [U.*], *: SW03 Setting No. + 1 (Outdoor unit No. U2 to U4)

B –

3 Outdoor unit HP capacity A [U.*], *: SW03 Setting No. + 1 (Outdoor unit No. U2 to U4)

B 8 HP: [... 8], 10 HP: [... 10], 12 HP: [... 12], 14 HP: [14], 16 HP: [16]

4

Compressor operation command A [U.*], *: SW03 Setting No. + 1 (Outdoor unit No. U2 to U4) B Indicates which compressor is ON.

* Any unconnected compressor is represented by “-“. B When compressor No. 1 is ON. 1 0 0 When compressor No. 2 is ON. 0 1 0 When compressor No. 3 is ON. 0 0 1

5 Fan operation mode A [U.*], *: SW03 Setting No. + 1 (Outdoor unit No. U2 to U4)

B At rest: [F … 0], in mode 63: [F 6 3]

6 Release signal A [U.*], *: SW03 Setting No. + 1 (Outdoor unit No. U2 to U4)

B Normal: [r … …], Upon receiving release signal: [r … 1]

7 Oil level judgment A [U.*], *: SW03 Setting No. + 1 (Outdoor unit No. U2 to U4)

B Normal: [… … …], Low level: [… … L]

8 Compressor 1 operating current A [U.*], *: SW03 Setting No. + 1 (Outdoor unit No. U2 to U4)

B [**.*], **.* is value of operating current in decimal format.


B [**.*],is value of operating current in decimal format.



11 Fan operating current A [U.*], *: SW03 Setting No. + 1 (Outdoor unit No. U2 to U4)


Note: Follower unit is selected by setting SW03.

SW03 7-segment display section A

1 U2

2 U3

3 U4

Error data

32 Guideline for Startup - Page 32

(5) Display of Indoor Unit Information (Displayed on Header Unit Only)


4

1~16

1~4

Indoor BUS communication signal receiving status

B Upon receiving signal: [... ... 1], Other times: [... ... ...]

5 Indoor check code B No check code: [– – –]

6 Indoor HP capacity B 0. 2; 0, 5; 0. 8; ... 1; 1, 2; 1, 7; ... 2; 2. 5;

...3; 3. 2; ...4; ...5; ...6; ...8; 1 0; 1 6; 2 0

7

Indoor request command (S code, operation mode)

B [ #. ... * ] # represents mode: COOL: [C. ... *], HEAT: [H. ... *] FAN: [F. ... *], OFF: [S. ... *] * represents S code: [#. ... 0] to [#. ... F]

8 Indoor PMV opening data B Displayed in decimal format

9 Indoor TA sensor data B Displayed in decimal format

11

1~4

Indoor TCJ sensor data B Displayed in decimal format

12 Indoor TC1 sensor data B Displayed in decimal format

13 Indoor TC2 sensor data B Displayed in decimal format

Note: Indoor address No. is selected by setting SW02 and SW03 and displayed on 7-segment display, section A.

SW03 SW02 Indoor address 7-segment display section A

1 1~16 SW02 setting number [01]~[16]

2 1~16 SW02 setting number +16 [17]~[32]



* Although 64 indoor unit addresses (Nos. 01-64) are theoretically available, the number of indoor units that can be connected to the same refrigerant piping system is limited to 48.

(6) Display of Outdoor EEPROM Writing Error Code (Displayed on Header Unit Only) * The latest error code written in the EEPROM of each outdoor unit is displayed. (This function is used to check the error code after the resetting of the power supply.) To display the error code, press SW04 and hold for at least 5 seconds after setting SW01 to 03 as shown in the table below.

SW01 SW02 SW03 Indoor address 7-segment display section A

1

1

16

Latest error code of header unit (U1) E. 1. * * *

2 Latest error code of follower unit No. 1 (U2) E. 2. * * *



• 7-Segment Display

Set SW01/SW02/SW03 to [1/1/16] and press SW04 and hold for at least 5 seconds. The latest error code of the header unit (U1) will be displayed.

If the setting of SW02 is changed, the latest error code of a follower unit (U2-U4) will be displayed.

Section A Section BD600 D601 D602 D603 D604


MINI SMMS – REFRIGERATION SCHEME AND SENSOR POSITIONS

MINI SMMS: Refrigeration scheme and sensor positions


MINI SMMS ‐ REFRIGERATION SCHEME AND SENSOR POSITIONS

Functional part name Functional outline Connector Solenoid valve SV2 1) Low‐pressure release function

2) High‐pressure release function 3) Gas balance function during off time 4) Hot gas bypass into accumulator

CN312 (White)

SV4 1) High‐pressure release function 2) Low‐pressure release function

SN311 (Blue)

SV5 Preventive function for high‐pressure rising in heating operation CN310 (White) Capillary tube 1 ID: 1,5, Length: 200 mm

2 ID: 2,2, Length: 100 mm 4‐way valve 1) Cooling/heating exchange

2) Reverse defrost CN317 (Blue)

PMV (Pulse motor valve) 1) Super heat control function in all heating and majority heating operation 2) Sub‐cool adjustment function in cooling operation

CN300 (White)

Temp. Sensor TD Protection of compressor discharge temp. Used for release CN502 (White) TS Controls super heat in heating operation CN504 (White) TE 1) Controls defrost in heating operation

2) Controls outdoor fan in heating operation CN505 (Green)

TL Detects under cool in cooling operation CN521 (White) TO Detects outside temperature CN507 (Yellow)

High‐pressure sensor 1) Detects high‐pressure and controls compressor capacity 2) Detects high‐pressure in cooling operation and controls the fan in low

ambient cooling operation

CN501 (Red)

Low‐pressure sensor 1) Detects low‐pressure in cooling operation and controls compressor capacity

2) Detects low‐pressure in heating operation and controls the super heat

CN500 (White)

Compressor case heater Prevents liquid accumulation to compressor CN316 (White) Accumulator case heater Prevents liquid accumulation to accumulator CN321 (Red)


SMMSi ‐ SCHEMATIC REPRESENTATION OF REFRIGERANT LINES AND SENSOR POSITION

Schematic representation of the refrigerant pipes and sensor positions

36


SMMSi ‐ SCHEMATIC REPRESENTATION OF REFRIGERANT LINES AND SENSOR POSITION

Explanation of Functional Parts

Functional part name Functional outline

Solenoid valve

SV3A (Connector CN321: White) Supplies oil reserved in the oil header during ON time.

SV3B (Connector CN321: White) Returns oil supplied in the balance pipe to the compressor.

SV3C (Connector CN321: White) Pressurizes oil reserved in the oil header during ON time.

SV3D (Connector CN322: White) 1) Reserves oil in the oil separator during OFF time. 2) Returns oil reserved in the oil separator to the compressor during ON time.

SV3E (Connector CN322: White) Turns on during operation and balances oil between compressors.

SV3F (Connector CN323: White) Controls oil level balances between compressors.

SV2

(Hot gas bypass) (Connector CN311: White) 1) Low pressure release function 2) High pressure release function 3) Gas balance function during stop time

SV41 SV42 SV43

(Start compensation valve of compressor) (SV41 Connector CN312: Blue, SV42 Connector CN312: Blue, SV43 Connector CN313: Red) 1) For gas balance start 2) High pressure release function 3) Low pressure release function

SV5 (Connector CN314: White) Preventive function for high‐pressure rising in heating operation

SV6 (Connector CN315: White) Liquid bypass function for discharge temperature release (cooling bypass function)

4‐way valve (Connector CN317: Blue) 1) Cooling/heating exchange 2) Reverse defrost

Pulse motor valve

PMV1, 2

(Connector CN300, 301: White) 1) Super heat control function in heating operation 2) Liquid line shut‐down function while follower unit stops 3) Under cool adjustment function in cooling operation 4) Exchange function between main and sub exchangers in cooling operation

PMV4 (Connector CN303: Rot) 1) Exchange function between main and sub exchangers in cooling operation 2) Preventive function for high‐pressure rising in heating operation

Oil separator 1) Prevention for rapid decreasing of oil (Decreases oil flowing to the cycle) 2) Reserve function of surplus oil

Temperature Sensor

TD1 TD2 TD3

(TD1 Connector CN502: White, TD2 Connector CN503: Pink, TD3 Connector CN504: Blue) 1) Protection of compressor discharge temperature 2) Used for discharge temperature release

TS1 (Connector CN505: White) Controls PMV super heat in heating operation

TE1 (Connector CN520: Green) 1) Controls defrost in heating operation 2) Controls outdoor fan in heating operation

TE2 (Connector CN521: Red) Controls exchange function between main and sub exchangers

TK1, TK2 TK3, TK4 TK5

(TK1 Connector CN531: Black, TK2 Connector CN532: Green, TK3 Connector CN533: Red, TK4 Connector CN534: Yellow, TK5 Connector CN535: Red) Judges oil level of the compressor

TL (Connector CN523: White) Detects under cool in cooling operation

TO (Connector CN507: Yellow) Detects outside temperature

Pressure sensor

High pressure sensor

(Connector CN501: Red) 1) Detects high pressure and controls compressor capacity 2) Detects high pressure in cooling operation, and controls the fan in low ambient cooling operation 3) Detects under cool in indoor unit in heating operation

Low pressure sensor (Connector CN500: White) 1) Detects low pressure in cooling operation and controls compressor capacity 2) Detects low pressure in heating operation, and controls the super heat

Heater

Compressor case heater

(Compressor 1 Connector CN331: White, Compressor 2 Connector CN332: Blue, Compressor 3 Connector CN333: Black) Prevents liquid accumulation to compressor

Accumulator Case heater

(Connector CN334: Red) Prevents liquid accumulation to accumulator

Balance pipe Oil balancing in each outdoor unit

37


SHRMi ‐ SCHEMATIC REPRESENTATION OF REFRIGERANT LINES AND SENSOR POSITION

Outdoor Unit (12, 14 HP) Model: MMY-MAP1204∗, MMY-MAP1404∗

38


SHRMi ‐ SCHEMATIC REPRESENTATION OF REFRIGERANT LINES AND SENSOR POSITION Explanation of Functional Parts


Solenoid valve







SV2


SV41 SV42 SV43


SV5 (Connector CN314: White) 1) Gas balance function at defrost operation when the number of heating indoor units increased/decreased 2) Gas recovery function in the discharge gas pipes when the single cooling operation

SV6 (Connector CN315: White) 1) Liquid bypass function for discharge temperature release (cooling bypass function) 2) Refrigerant recovery function from the stopped follower unit

SV11 (Connector CN319: White) To block discharge gas pipe (At single cooling or defrost operation)

SV14 (Connector CN336: Yellow) To block the liquid line

4‐way valve

(Connector CN317: Blue) 1) Cooling/heating exchange 2) Reverse defrost 3) Exchange of main heat exchanger with auxiliary heat exchanger

Pulse motor valve

PMV1, 2 (Connector CN300, 301: White) 1) Super heat control function at single heating, collective heating operation 2) Under cool control function in single cooling operation

PMV4 (Connector CN303: Red) 1) Controls flow volume of the auxiliary heat exchanger at collective operation 2) Preventive function for high‐pressure rising in single heating operation


Temperature Sensor

TD1, TD2, TD3 (TD1 Connector CN502: White, TD2 Connector CN503: Pink, TD3 Connector CN504: Blue) Protection of compressor discharge temperature

TS1 (Connector CN505: White) Controls PMV1, 2 super heat in single heating / collective heating

TS2 (Connector CN506: Black) 1) Controls indoor oil recovery at single cooling, collective cooling operation 2) Detects overheat of the cycle

TE1 (Connector CN520: Green) 1) Controls defrost in single / collective heating operation 2) Controls outdoor fan in single / collective heating operation

TE2 (Connector CN521: Red) Controls low volume of the auxiliary heat exchanger at collective operation



TL (Connector CN523: White) Detects under cool at single operation / collective cooling operation


Pressure sensor


(Connector CN501: Red) 1) Detects high pressure and controls compressor capacity 2) Detects high pressure at single operation / collective cooling operation, and controls the fan in low ambient cooling operation 3) Detects under cool in indoor unit at single operation / collective heating operation 4) Controls rps outdoor fan at collective cooling operation

Low pressure sensor (Connector CN500: White) 1) Detects low pressure at single / collective cooling operation and controls compressor capacity 2) Detects low pressure at single / collective heating operation, and controls the super heat


Heater

Compressor case heater

(Compressor 1 Connector CN331: White, Compressor 2 Connector CN332: Blue, Compressor 3 Connector CN333: Black) Prevents liquid accumulation to compressor

Accumulator case heater

(Connector CN334: Red) Prevents liquid accumulation to accumulator

Balance pipe Oil balancing in each outdoor unit


SHRMi ‐ SCHEMATIC REPRESENTATION OF REFRIGERANT LINES AND SENSOR POSITION Explanation of Functional Parts


Solenoid valve







SV2


SV41 SV42 SV43


SV5 (Connector CN314: White) 1) Gas balance function at defrost operation when the number of heating indoor units increased/decreased 2) Gas recovery function in the discharge gas pipes when the single cooling operation

SV6 (Connector CN315: White) 1) Liquid bypass function for discharge temperature release (cooling bypass function) 2) Refrigerant recovery function from the stopped follower unit

SV11 (Connector CN319: White) To block discharge gas pipe (At single cooling or defrost operation)

SV14 (Connector CN336: Yellow) To block the liquid line

4‐way valve

(Connector CN317: Blue) 1) Cooling/heating exchange 2) Reverse defrost 3) Exchange of main heat exchanger with auxiliary heat exchanger

Pulse motor valve

PMV1, 2 (Connector CN300, 301: White) 1) Super heat control function at single heating, collective heating operation 2) Under cool control function in single cooling operation

PMV4 (Connector CN303: Red) 1) Controls flow volume of the auxiliary heat exchanger at collective operation 2) Preventive function for high‐pressure rising in single heating operation


Temperature Sensor

TD1, TD2, TD3 (TD1 Connector CN502: White, TD2 Connector CN503: Pink, TD3 Connector CN504: Blue) Protection of compressor discharge temperature

TS1 (Connector CN505: White) Controls PMV1, 2 super heat in single heating / collective heating

TS2 (Connector CN506: Black) 1) Controls indoor oil recovery at single cooling, collective cooling operation 2) Detects overheat of the cycle

TE1 (Connector CN520: Green) 1) Controls defrost in single / collective heating operation 2) Controls outdoor fan in single / collective heating operation

TE2 (Connector CN521: Red) Controls low volume of the auxiliary heat exchanger at collective operation



TL (Connector CN523: White) Detects under cool at single operation / collective cooling operation


Pressure sensor


(Connector CN501: Red) 1) Detects high pressure and controls compressor capacity 2) Detects high pressure at single operation / collective cooling operation, and controls the fan in low ambient cooling operation 3) Detects under cool in indoor unit at single operation / collective heating operation 4) Controls rps outdoor fan at collective cooling operation

Low pressure sensor (Connector CN500: White) 1) Detects low pressure at single / collective cooling operation and controls compressor capacity 2) Detects low pressure at single / collective heating operation, and controls the super heat

40


SHRMi ‐ SCHEMATIC REPRESENTATION OF REFRIGERANT LINES AND SENSOR POSITION Indoor Unit

(CAUTION) MMU‐AP0071YH, AP0121YH type air conditioners have no TC2 sensor. Explanation of functional parts in indoor unit

Functional part name Functional outline Pulse Motor Valve (Connector CN082 (6P): Blue)

1) Controls super heat in cooling operation 2) Controls under cool in heating operation 3) Recovers refrigerant oil in cooling operation 4) Recovers refrigerant oil in heating operation

Temperature Sensor

1.TA (Connector CN104 (2P): Yellow) Detects indoor suction temperature

2.TC1 (Connector CN100 (3P): Brown) Controls PMV super heat in cooling operation

3.TC2 (Connector CN101 (2P): Black) Controls PMV under cool in heating operation

4.TCJ (Connector CN102 (2P): Red) 1) Controls PMV super heat in cooling operation 2) [MMU‐AP007YH to AP012YH only] Controls PMV under cool in heating operation

Ventilator Motor

Ventilator

41

42

43

SMMS • SHRM • Mini SMMS Guideline for Startup of VRF systems

Subject to typographical and other errors!

Printed: January 2013

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SMMS • SHRM • Mini SMMS Guideline for Startup of VRF systems SMMS • SHRM • Mini SMMS Guideline for Startup of VRF systems

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