Mitsubishi Electric City Multi PUHY-EP1250YSNW-A Page 57 Installation Manual Download | Manualshive

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G

B

GB-55

KJ79F137H01

12. Inspection and maintenance

Only qualified personnel must relocate or repair the unit. Do not attempt to disassemble or
alter the unit.

- Failure to do so will result in refrigerant leakage, water leakage, serious injury, electric shock, or

fire.

・

While the unit is turned on, the compressor will remain energized even when it is stopped. Before inspecting the
inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor
voltage at the connector (RYPN) has dropped to 20 VDC or less. (It takes about 10 minutes to discharge electricity
after the power supply is turned off.)

・

Control boxes house high-voltage and high-temperature electrical parts. They may still remain energized or hot
after the power is turned off.

・

Perform the service after disconnecting the connectors (RYFAN1 and RYFAN2).
(To plug or unplug connectors, check that the outdoor unit fan is not rotating and that the voltage is 20 VDC or
below. The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy
conditions. Refer to the wiring nameplate for details.)
Reconnect the connectors (RYFAN1 and RYFAN2) after servicing.

・

Unit components may be damaged after long use of the unit, resulting in a performance drop or the unit becoming a
safety hazard. To use the unit safely and maximize its life, it is recommended that a maintenance contract with a
dealer or qualified personnel be signed. If the contract is signed, service technicians will periodically inspect the unit
to identify any damage at an early stage, and take appropriate measures.

・

When the outdoor unit is installed on the waterproof sheet, the sheet may become dirty due to the copper
component seeped out from the unit. In this case, installing a drain pan for centralized drainage is recommended.

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Summary of Contents for City Multi PUHY-EP1250YSNW-A

Page 1: ...DWOH RNX XQX ᆿ㻻ᢁ߂ ѰҼᆿ ૂޞ ൦ֵ ᵢグ䈹ಞθ䈭 ᆿ㻻ࢃԊ㓼䰻䈱ᵢᆿ㻻ᢁ߂Ⱦ 3ěË58ý 167 9 iMPX EH SHþQpKR D VSUiYQpKR SRXåtYiQt VL SĜHG LQVWDODFt NOLPDWL DþQt MHGQRWN GĤNODGQČ SURþWČWH WXWR SĜtUXþNX N LQVWDODFL NÁVOD NA INŠTALÁCIU 3UH EH SHþQp D VSUiYQH SRXåLWLH VL SUHG LQãWDORYDQtP NOLPDWL DþQHM MHGQRWN SURVtP VWDURVWOLYR SUHþtWDMWH WHQWR QiYRG QD LQãWDOiFLX 7 3Ë7e6 e g1 9 EL WRQViJRV pV KHO HV KDV QiODWKR NpUM N ROYDVVD HO...

Page 2: ......

Page 3: ...rk 20 9 1 Restrictions 20 9 2 Pipe selection 22 9 3 Twinning kit selection 23 9 4 Pipe connection example 23 9 5 Piping connections and valve operations 28 9 6 Air tightness test 32 9 7 Thermal insulation for pipes 33 9 8 Evacuation of the system 35 9 9 Additional refrigerant charge 36 10 Electrical work 40 10 1 Before electrical work 40 10 2 Power cables and device capacity 40 10 3 Control cable ...

Page 4: ...se of the wrong type of refrigerant Do not use the unit in an unusual environment If the unit is used in areas exposed to large amounts of oil steam organic solvents or corrosive gases such as ammonia sulfuric compounds or acids or areas where acidic alkaline solutions or special chemical sprays are used frequently it may significantly reduce the performance and corrode the internal parts resultin...

Page 5: ...ause serious injury Consult your dealer for the proper disposal of the unit The refrigerant oil and the refrigerant in the unit will pose a risk of environmental pollution fire or explosion Children should be supervised to ensure that they do not play with the appliance Do not operate the unit with the panels and guards removed Rotating hot or high voltage parts may cause injury electric shock or ...

Page 6: ...nstalled on a structure that can sustain its weight Failure to do so will cause the unit to fall resulting in serious injury Seal all openings around pipes and wires to keep out small animals rainwater or snow Failure to do so may result in current leakage electric shock or damage to the unit 1 4 Precautions for piping work Before heating the brazed sections remove the gas and oil that are trapped...

Page 7: ...ch fuse that meets local electrical codes or overcurrent breaker Failure to do so may result in electric shock malfunction smoke or fire Only use standard power cables of sufficient capacity Failure to do so may result in current leakage overheating smoke or fire Proper grounding must be provided by qualified personnel Improper grounding may result in electric shock fire explosion or malfunction d...

Page 8: ...g in damage to furniture and other surroundings Take appropriate measures against electrical noise interference when installing the unit in hospitals or radio communication facilities Inverter high frequency medical or wireless communication equipment as well as power generators may cause the air conditioning system to malfunction The air conditioning system may also adversely affect the operation...

Page 9: ...orate and cause the compressor to malfunction Do not use existing refrigerant piping The old refrigerant and refrigerant oil in the existing piping contain a large amount of chlorine which will cause the refrigerant oil in the new unit to deteriorate and cause the compressor to malfunction Charge refrigerant in a liquid state Charging refrigerant in the gaseous state will change the composition of...

Page 10: ...BS PUHY P250YNW A BS PUHY P700YSNW A BS PUHY P350YNW A BS PUHY P350YNW A BS PUHY P750YSNW A BS PUHY P400YNW A BS PUHY P350YNW A BS PUHY P800YSNW A BS PUHY P450YNW A BS PUHY P350YNW A BS PUHY P850YSNW A BS PUHY P450YNW A BS PUHY P400YNW A BS PUHY P900YSNW A BS PUHY P450YNW A BS PUHY P450YNW A BS PUHY P950YSNW A BS PUHY P350YNW A BS PUHY P350YNW A BS PUHY P250YNW A BS PUHY P1000YSNW A BS PUHY P400YN...

Page 11: ...0YNW A BS PUHY EP350YNW A BS PUHY EP850YSNW A BS PUHY EP450YNW A BS PUHY EP400YNW A BS PUHY EP900YSNW A BS PUHY EP450YNW A BS PUHY EP450YNW A BS PUHY EP950YSNW A BS PUHY EP350YNW A BS PUHY EP350YNW A BS PUHY EP250YNW A BS PUHY EP1000YSNW A BS PUHY EP400YNW A BS PUHY EP350YNW A BS PUHY EP250YNW A BS PUHY EP1050YSNW A BS PUHY EP400YNW A BS PUHY EP400YNW A BS PUHY EP250YNW A BS PUHY EP1100YSNW A BS P...

Page 12: ...ion temperature Heating Outdoor W B 20 0 C to 15 5 C 4 0 F to 60 0 F Indoor D B 15 0 C to 27 0 C 59 0 F to 81 0 F Model PUHY P650YSNW A PUHY P700YSNW A PUHY P750YSNW A PUHY P800YSNW A PUHY P850YSNW A PUHY P900YSNW A Power input Cooling 17 59 20 35 21 99 22 76 24 66 25 44 Heating 19 53 21 15 24 54 24 39 28 05 27 90 Sound pressure level 3 50 60 Hz 66 5 dB A 65 0 dB A 67 0 dB A 67 5 dB A 68 5 dB A 68...

Page 13: ...Indoor W B 15 0 C to 24 0 C 59 0 F to 75 0 F Operation temperature Heating Outdoor W B 20 0 C to 15 5 C 4 0 F to 60 0 F Indoor D B 15 0 C to 27 0 C 59 0 F to 81 0 F Model PUHY EP500YNW A PUHY EP400YSNW A PUHY EP450YSNW A PUHY EP500YSNW A PUHY EP550YSNW A PUHY EP600YSNW A Power input Cooling 12 41 8 27 9 67 11 31 13 10 14 75 Heating 13 57 9 27 10 58 12 09 13 77 15 79 Sound pressure level 3 50 60 Hz...

Page 14: ...0 F to 60 0 F Indoor D B 15 0 C to 27 0 C 59 0 F to 81 0 F Model PUHY EP1250YSNW A PUHY EP1300YSNW A PUHY EP1350YSNW A Power input Cooling 32 98 33 85 34 30 Heating 39 00 39 81 40 24 Sound pressure level 3 50 60 Hz 70 0 dB A 70 0 dB A 70 5 dB A External static pressure 0 Pa 2 Indoor unit Total capacity 50 to 130 1 Model 15 to 250 Quantity 3 to 50 3 to 50 3 to 50 Operation temperature Cooling Outdo...

Page 15: ...ontents The table below lists all the parts and their quantities included in the package 1 P models Tie band P200 2 P250 2 P300 2 P350 2 P400 2 P450 2 P500 2 2 EP models Tie band EP200 2 EP250 2 EP300 2 EP350 2 EP400 2 EP450 2 EP500 2 ...

Page 16: ...he unit from being scratched Put 50 mm 2 in or thicker protective pads between slings and the unit where the slings touch the unit at the top of the unit to protect the unit from being scratched and to avoid contact with the slings and the fan guard Make sure that the angles between slings at the top are less than 40 degrees P200 P250 P300 EP200 EP250 EP300 P350 P400 P450 EP350 EP400 EP450 Ⓐ Ⓔ Ⓑ Ⓒ...

Page 17: ...ght or lower than the overall height of the unit Required minimum distance mm in L1 Front L2 Rear L3 Right Left When the distance behind the unit L2 needs to be small 450 17 3 4 100 3 15 16 50 2 When the distance to the right or left L3 needs to be small 450 17 3 4 300 11 13 16 15 5 8 2 When one or more walls exceed their height limits When the wall s at the front and or the right left exceed s th...

Page 18: ...unt of drain water is excessive drain water comes out of the outdoor unit along the panel during heating operation 1 Side by side installation When the distances between the units L4 need to be small When the distance behind the block of units L2 needs to be small h2 L2 L1 h1 L4 Ⓐ Ⓐ h2 h1 L1 L2 L4 Ⓐ Ⓐ Required minimum distance mm in L1 Front L2 Rear L4 Between 450 17 3 4 h1 300 11 13 16 h2 30 1 3 ...

Page 19: ...L4 L2 Ⓐ Ⓐ Required minimum distance mm in L2 Rear L2 Rear L4 Between 300 11 13 16 h2 300 11 13 16 h2 900 35 7 16 When there are two walls in an L shape h2 L2 L4 L3 Ⓐ Ⓐ h3 Required minimum distance mm in L2 Rear L3 Right Left L4 Between 300 11 13 16 h2 1000 39 3 8 h3 900 35 7 16 Ⓐ Leave open in two directions Unit height Unit height Unit height Unit height ...

Page 20: ...e and the outdoor unit by putting a rubber cushion or by applying an electrically insulated coating to prevent the base from rusting Install the unit on a level surface With some types of installation unit vibration and sound will be transmitted to the floors and walls In such locations take measures to prevent vibration such as using anti vibration rubber pads mm in 1 Without a detachable leg Ⓐ Ⓑ...

Page 21: ...or Size Refer to the Data Book Ⓓ Ⓓ Ⓐ Ⓑ Ⓑ Ⓑ Ⓑ Ⓒ Ⓒ Ⓒ Ⓒ Ⓒ Ⓒ Ⓐ Outlet Ⓑ Inlet Ⓒ Snow hood Ⓓ Raised base Install the unit so that the wind will not blow directly against the inlet and outlet If necessary install the unit on a raised base of the following specifications not supplied to prevent damage from snow Material Angle iron Build a structure that snow and wind can pass through Height Expected maxi...

Page 22: ... refrigerants will not react to a refrigerant that does not contain chlorine If the specified refrigerant is mixed with water refrigerant oil or another refrigerant the refrigerant oil will deteriorate and the compressor will malfunction Do not use existing refrigerant piping The old refrigerant and refrigerant oil in the existing piping contain a large amount of chlorine which will cause the refr...

Page 23: ...ration and Units 1 and 2 are stopped H Ⓐ Ⓐ H Ⓐ 3 The vertical separation between units H must be 0 1 m 3 15 16 in or below In the figure on the right because the distance is more than 0 1 m 3 15 16 in the oil accumulates in Unit 1 when Unit 3 is in operation and Unit 1 is stopped H Ⓐ H Ⓐ 4 The vertical separation between units H must be 0 1 m 3 15 16 in or below In the figure on the right because ...

Page 24: ...ing made of phosphorus deoxidized copper copper and copper alloy seamless pipes that meets local requirements Pipe joints should also meet local requirements Keep the inner and outer surfaces of the pipes clean and free of sulphur oxides dust dirt shaving particles oils moisture or any other contaminants Contaminants on the inside of the refrigerant piping will cause the refrigerant oil to deterio...

Page 25: ... below 4 CMY Y104 G 400 or below 8 CMY Y108 G 650 or below 10 CMY Y1010 G Use an adapter if necessary to connect a refrigerant pipe to a twinning pipe of a different diameter 9 3 2 Outdoor unit twinning kit Select a proper outdoor unit twinning kit sold separately based on the total capacity of the outdoor units using the table below as a reference Total capacity of outdoor units Kit model Total c...

Page 26: ...EP900YSNW A Ⓔ Ⓑ Ⓒ Ⓒ Ⓒ Ⓒ Ⓒ Ⓐ Ⓐ Ⓐ Ⓐ Ⓔ Ⓑ Ⓒ Ⓒ Ⓒ Ⓒ Ⓕ Ⓒ Ⓓ P950 to P1350YSNW A EP950 to EP1350YSNW A Ⓒ Ⓒ Ⓒ Ⓒ Ⓒ Ⓔ Ⓔ Ⓑ Ⓐ Ⓐ Ⓐ Ⓐ Ⓐ Ⓐ Ⓔ Ⓔ Ⓑ Ⓒ Ⓒ Ⓒ Ⓒ Ⓒ Ⓓ Ⓕ Ⓐ Outdoor unit Ⓑ 1st branching Ⓒ Indoor unit Ⓓ Cap Ⓔ Outdoor unit twinning kit Ⓕ Header branching The total length of A1 A2 A3 and A4 is less than 10 m 32 ft Unit 1 Unit 1 Unit 1 Unit 2 Unit 1 Unit 2 Unit 1 Unit 2 Unit 3 Unit 1 Unit 2 Unit 3 ...

Page 27: ...id Gas P200YNW A ø3 8 ø7 8 P250YNW A ø3 8 1 ø7 8 P300YNW A ø3 8 2 ø7 8 P350YNW A ø1 2 ø1 1 8 P400YNW A ø1 2 ø1 1 8 P450YNW A ø5 8 ø1 1 8 P500YNW A ø5 8 ø1 1 8 P400YSNW A P200 P200 ø1 2 ø1 1 8 ø3 8 ø7 8 ø3 8 ø7 8 P450YSNW A P250 P200 ø5 8 ø1 1 8 ø3 8 ø7 8 ø3 8 ø7 8 P500YSNW A P250 P250 ø5 8 ø1 1 8 ø3 8 ø7 8 ø3 8 ø7 8 P550YSNW A P300 P250 ø5 8 ø1 1 8 ø1 2 ø1 1 8 ø3 8 ø7 8 P600YSNW A P300 P300 ø5 8 ø...

Page 28: ...SNW A EP450 EP350 ø19 05 ø34 93 ø15 88 ø28 58 ø12 7 ø28 58 EP850YSNW A EP450 EP400 ø19 05 ø41 28 ø15 88 ø28 58 ø15 88 ø28 58 EP900YSNW A EP450 EP450 ø19 05 ø41 28 ø15 88 ø28 58 ø15 88 ø28 58 EP950YSNW A EP350 EP350 EP250 ø19 05 ø41 28 ø12 7 ø28 58 ø12 7 ø28 58 ø9 52 ø22 2 ø19 05 ø34 93 EP1000YSNW A EP400 EP350 EP250 ø19 05 ø41 28 ø15 88 ø28 58 ø12 7 ø28 58 ø9 52 ø22 2 ø19 05 ø34 93 EP1050YSNW A EP...

Page 29: ...ø1 2 ø1 1 8 ø3 4 ø1 3 8 EP1200YSNW A EP400 EP400 EP400 ø3 4 ø1 5 8 ø5 8 ø1 1 8 ø5 8 ø1 1 8 ø5 8 ø1 1 8 ø3 4 ø1 3 8 EP1250YSNW A EP450 EP400 EP400 ø3 4 ø1 5 8 ø5 8 ø1 1 8 ø5 8 ø1 1 8 ø5 8 ø1 1 8 ø3 4 ø1 3 8 EP1300YSNW A EP450 EP450 EP400 ø3 4 ø1 5 8 ø5 8 ø1 1 8 ø5 8 ø1 1 8 ø5 8 ø1 1 8 ø3 4 ø1 3 8 EP1350YSNW A EP450 EP450 EP450 ø3 4 ø1 5 8 ø5 8 ø1 1 8 ø5 8 ø1 1 8 ø5 8 ø1 1 8 ø3 4 ø1 3 8 1 Use the ø1...

Page 30: ...lastic bags If dust dirt or water enters the refrigerant lines the refrigerant oil will deteriorate and the compressor will malfunction Keep the service valves closed until refrigerant charging is completed Failure to do so will damage the unit Place a wet towel on the service valves before brazing the pipes to keep the temperature of the valves from rising above 120ºC 248ºF Failure to do so may r...

Page 31: ...as in the pinched connecting pipes or evacuate the system Ⓓ Cap Remove the cap before turning the shaft Put the cap back on upon completion of all work Ⓔ Severed section of the pinched connecting pipe Ⓕ Brazed section of the pinched connecting pipe 9 5 2 Connecting pipes The refrigerant pipe from the outdoor unit is branched at the pipe end and each branch is then connected to an indoor unit Conne...

Page 32: ...ding to the pipe diameter and connect the pipes as shown in the figures below 1 When routing the pipes through the front of the unit Ⓐ Ⓑ Ⓓ A B 2 When routing the pipes through the bottom of the unit A B Ⓐ Ⓒ Ⓓ Ⓑ A Liquid side B Gas side Ⓐ Refrigerant service valve piping Ⓑ Reducer etc Ⓒ Elbow Ⓓ On site piping ...

Page 33: ...gth from the outdoor unit to the farthest indoor unit is less than 90 m 295 ft 2 When the piping length from the outdoor unit to the farthest indoor unit is 90 m 295 ft or more 3 When the piping length from the outdoor unit to the farthest indoor unit is less than 40 m 131 ft 4 When the piping length from the outdoor unit to the farthest indoor unit is 40 m 131 ft or more 5 When the unit is used a...

Page 34: ...s test If there is a leak the composition of the refrigerant will change and the performance will drop Air tightness test procedures Make sure the service valves are closed Add pressure to the refrigerant pipes through the service ports of the liquid and gas pipes Pressurize to the design pressure 4 15 MPa using nitrogen gas If the pressure holds for one day and does not decrease the pipes have pa...

Page 35: ...lation thickness may need to be increased in high temperature humidity conditions Even when specifications are defined by your client the standards in the table should be met Ⓐ Ⓒ Ⓑ Ⓓ Ⓔ Ⓐ Steel wire Ⓑ Pipe Ⓒ Oily mastic asphalt or asphalt Ⓓ Insulation material A Ⓔ Outer covering B Insulation material A Glass fiber Steel wire Adhesive Heat resistant polyethylene foam Adhesive tape Outer covering B I...

Page 36: ... Ⓑ Ⓒ Ⓕ 1000 39 3 8 1000 39 3 8 Ⓐ Ⓗ Ⓘ Ⓐ Sleeve Ⓑ Insulation material Ⓒ Lagging Ⓓ Caulking material Ⓔ Band Ⓕ Waterproof layer Ⓖ Sleeve with a flange Ⓗ Caulk with a nonflammable material such as mortar Ⓘ Nonflammable insulation material When caulking the gaps with mortar cover the section of the pipe that goes through the wall with a metal sheet to prevent the insulation material from sagging For thi...

Page 37: ...te the system to 533 Pa from both service ports using a vacuum pump Pressurize the system with dry nitrogen gas up to 0 Pa from the discharge service port Evacuate the system to 200 Pa from the suction service port using a vacuum pump Pressurize the system with dry nitrogen gas up to 0 Pa from the discharge service port Evacuate the system from both service ports using a vacuum pump After the vacu...

Page 38: ... 9 1159 45 9 1618 EP500YSNW A 13 0 459 32 9 1159 45 9 1618 P550YSNW A 13 0 459 34 7 1223 47 7 1681 EP550YSNW A 13 0 459 34 7 1225 47 7 1683 P600YSNW A 13 0 459 34 7 1223 47 7 1681 EP600YSNW A 13 0 459 34 7 1225 47 7 1683 P650YSNW A 16 3 575 35 2 1243 51 5 1818 EP650YSNW A 17 3 611 35 1 1239 52 4 1850 P700YSNW A 19 6 692 44 8 1581 64 4 2272 EP700YSNW A 19 6 692 44 8 1581 64 4 2272 P750YSNW A 19 6 6...

Page 39: ...1250 12 0 1251 or above 14 0 When the piping length from the outdoor unit to the farthest indoor unit is longer than 30 5 m 100 ft Amount of additional charge kg ø19 05 total length 0 26 kg m ø15 88 total length 0 18 kg m ø12 7 total length 0 11 kg m ø9 52 total length 0 054 kg m ø6 35 total length 0 021 kg m Outdoor unit model Amount kg Total capacity of connected indoor units Amount kg E P200 0 ...

Page 40: ... 801 to 890 318 891 to 1070 353 1071 to 1250 424 1251 or above 494 When the piping length from the outdoor unit to the farthest indoor unit is longer than 30 5 m 100 ft Amount of additional charge oz ø3 4 total length 2 80 oz ft ø5 8 total length 1 94 oz ft ø1 2 total length 1 19 oz ft ø3 8 total length 0 58 oz ft ø1 4 total length 0 23 oz ft Outdoor unit model Amount oz Total capacity of connecte...

Page 41: ...t after the completion of piping work Upon completion of all work securely tighten all service port caps and shaft caps to prevent refrigerant leakage Notice Do not vent the refrigerant into the atmosphere Refer to the table below for the appropriate tightening torque Pipe size mm in Shaft cap N m Shaft N m Size of hexagonal wrench mm in Service port cap N m ø9 52 ø3 8 22 12 ø12 7 ø1 2 27 ø15 88 ø...

Page 42: ... the wiring regulations of the region Include some slack in the wiring for the control box on the indoor and outdoor units because these boxes are sometimes removed at the time of service work 10 2 Power cables and device capacity Include some slack in the power cables Failure to do so may break or overheat the cables resulting in smoke or fire Install an inverter circuit breaker on the power supp...

Page 43: ...2 AWG Earth leakage breaker Local switch A Overcurrent breaker NFB A Maximum allowable system impedance Power cable Power cable after branching point Earth wire Capacity Fuse Outdoor unit E P200 4 0 12 4 0 12 30 A 100 mA 0 1 sec or less 25 25 30 3 E P250 4 0 12 4 0 12 30 A 100 mA 0 1 sec or less 32 32 30 3 E P300 4 0 12 4 0 12 30 A 100 mA 0 1 sec or less 32 32 30 3 E P350 6 0 10 6 0 10 40 A 100 mA...

Page 44: ... use shall not be lighter than polychloroprene sheathed flexible cord design 60245 IEC57 For example use wiring such as YZW This unit is intended for the connection to a power supply system with a maximum permissible system impedance shown in the above table at the interface point power service box of the user s supply The user must ensure that this unit is connected only to a power supply system ...

Page 45: ...s to 1000 m 3280 ft consult your dealer Remote controller cable ME remote controller cable MA remote controller cable Type 2 core sheathed cable unshielded CVV Size 0 3 1 25 mm2 AWG 22 16 0 75 1 25 mm2 AWG 18 16 if a simple remote controller is connected Length Max 10 m 32 ft If the length exceeds 10 m 32 ft use a 1 25 mm2 AWG 16 shielded cable Max 200 m 656 ft 10 4 System configuration Unit code ...

Page 46: ...d set SW5 1 on ALL of the outdoor units to ON Maximum allowable length of control cables Transmission cables via outdoor units L1 L2 L3 L4 L1 L2 L3 L5 L1 L2 L6 P IW 3 Transmission cables L1 L3 L4 L3 L5 L6 L2 L6 P IW Remote controller cables Ɛ1 Ɛ2 Ɛ3 Ɛ4 P IW If the length exceeds 10 m 32 ft the length that exceeds 10 m 32 ft needs to be included in the maximum allowable length of transmission cable...

Page 47: ...L4 L6 L2 L6 P IW Remote controller cables m1 m2 m1 m2 m3 m4 P IW 4 When extending the length of the transmission cables to 1000 m 3280 ft consult your dealer 3 When a transmission booster unit is connected TB7 TB7 TB7 Ⓐ Ⓐ Shielded cable 1 Daisy chain terminals TB3 on outdoor units together in the same refrigerant system 2 Leave the power jumper connected to CN41 Maximum allowable length of control...

Page 48: ...er Use the appropriate knockout hole according to the size of the power cable referring to the table below 1 When routing the wiring through the front of the unit 2 When routing the wiring through the bottom of the unit Ⓑ Ⓒ Ⓐ Ⓒ Ⓐ Ⓑ Ⓓ Ⓔ Ⓔ Power cable size mm2 Knockout hole to be used 2 3 5 5 5 Knockout hole 2 8 14 Knockout hole 4 21 26 33 Knockout hole 3 84 67 53 Knockout hole 5 Ⓐ Cable strap Ⓑ Pow...

Page 49: ...h a suitable material to prevent snow from entering which may cause damage to the electrical parts and to protect your hands from direct contact with cables When putting the power cable through the knockout hole without using a conduit tube deburr the hole and protect the power cable with protective tape Use a conduit tube to narrow down the opening if there is a possibility of small animals enter...

Page 50: ... voltage Transmission cable not supplied The length of the section after the cable access hole must be at least 1100 mm 43 in Power supply terminal block Power cable not supplied Rubber bushing 2 Tie band Supplied Unit wiring sensor wiring Rubber bushing for FAN cable Rubber bushing for Fan cable and unit wiring solenoid coil wiring Cable strap Tie band Supplied Rubber bushing 1 Transmission termi...

Page 51: ...ntrol box 3 When tying the supplied tie band around the rubber bushing make sure to leave no gap between the ends Cables are coming out of the rubber bushing Wiring Cross sectional view Rubber bushing oval part Rubber bushing oval part Cut Top view Wiring Wiring Top view Rubber bushing Sheet metal on the control box Rubber bushing Sheet metal on the control box Rubber bushing Important When puttin...

Page 52: ...ot push the driver strongly to avoid damaging the screw Make an alignment mark with a permanent marker across the screw head washer and terminal after tightening the screws Take the procedure below to connect the cables Connect the indoor outdoor transmission cable to TB3 If multiple outdoor units are connected to the same refrigerant system daisy chain TB3 M1 M2 earth on the outdoor units The ind...

Page 53: ...p 01 to 50 Outdoor unit OC OS1 OS2 Assign sequential addresses to the outdoor units in the same refrigerant system To set the address to 100 the address setting switch must be set to 50 51 to 100 ME remote controller Main Assign an address that equals the address of the main indoor unit in the group plus 100 101 to 150 Sub Assign an address that equals the address of the main indoor unit in the gr...

Page 54: ...of refrigerant in the compressor By turning on the main power and energizing the unit for 12 hours or longer the refrigerant in the compressor will evaporate and the insulation resistance will rise Do not apply an ohmmeter voltage to the terminal block for transmission cables Doing so will damage the control board Do not measure the insulation resistance of the transmission terminal block of the u...

Page 55: ...ion settings by setting SW5 and SW6 referring to the table below Setting content Setting Switch setting timing OFF ON SW5 1 Centralized control switch Without connection to the centralized controller With connection to the centralized controller Before being energized SW5 2 Deletion of connection information Normal control Deletion Before being energized SW5 3 Preset before shipment SW5 4 SW5 5 SW...

Page 56: ...ally changes during heating operation Normal display The fan operates at Very Low speed when the thermostat is turned off and automatically changes over to the preset speed according to the timer setting or refrigerant temperature when the thermostat is turned on The fan stops during heating operation Defrost The fan remains stopped during the defrost cycle The fan keeps running after the unit has...

Page 57: ...onnecting the connectors RYFAN1 and RYFAN2 To plug or unplug connectors check that the outdoor unit fan is not rotating and that the voltage is 20 VDC or below The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions Refer to the wiring nameplate for details Reconnect the connectors RYFAN1 and RYFAN2 after servicing Unit components may be...

Page 58: ...g 9 8 kg 10 8 kg 10 8 kg Allowable pressure Ps HP 4 15 MPa LP 2 21 MPa Net weight 294 kg 278 kg 294 kg 278 kg 294 kg 294 kg Model P950YSNW A P1000YSNW A Unit combination P450 P250 P250 P400 P350 P250 Refrigerant R410A 10 8 kg 6 5 kg 6 5 kg 9 8 kg 9 8 kg 6 5 kg Allowable pressure Ps HP 4 15 MPa LP 2 21 MPa Net weight 294 kg 225 kg 225 kg 278 kg 278 kg 225 kg Model P1050YSNW A P1100YSNW A Unit combi...

Page 59: ...kg 10 8 kg Allowable pressure Ps HP 4 15 MPa LP 2 21 MPa Net weight 305 kg 285 kg 305 kg 305 kg 305 kg 305 kg Model EP950YSNW A EP1000YSNW A Unit combination EP450 EP250 EP250 EP400 EP350 EP250 Refrigerant R410A 10 8 kg 6 5 kg 6 5 kg 10 8 kg 9 8 kg 6 5 kg Allowable pressure Ps HP 4 15 MPa LP 2 21 MPa Net weight 305 kg 231 kg 231 kg 305 kg 285 kg 231 kg Model EP1050YSNW A EP1100YSNW A Unit combinat...

Page 60: ...GB 58 KJ79F137H01 MANUFACTURER MITSUBISHI ELECTRIC CONSUMER PRODUCTS THAILAND CO LTD 700 406 MOO 7 TAMBON DON HUA ROH AMPHUR MUANG CHONBURI 20000 THAILAND MADE IN THAILAND ...

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