Download Mitsubishi Electric PDFY-P-VM-E Specifications
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PUHY-P-YGM-A PFD-P-VM-E Close control CONTENTS 1. Specifications 1 1 2 3 2. Capacity Curves ························································· 2-1 Cooling Capacity ························································· ························································· 2-2 Cooling Input ························································· 2-3 SHF Curves 2-4 Correction by refrigerant piping length ···························· ························································· 2-5 Operation limit 4 4 4 5 6 6 3. Sound Levels ··································································· 7 7 8 8 ······························································ 1-1 Main Features ······························································ 1-2 List of Possible Combinations of Indoor and Outdoor Units ····· 1-3 Unit Specifications ························································· 3-1 Noise Level ··································································· 3-2 NC Curves ··································································· 3-3 Fan Characteristics Curves ··········································· 4. External Dimensions ······················································ 5. Electrical Wiring Diagrams ··········································· 6. Refrigerant Circuit Diagram And Thermal Sensor ··· 7. System Design ································································· 7-1 Refrigerant Piping System ·············································· 7-2 Control Wiring ································································· 7-3 Types of switch settings and setting methods ················ 7-4 Sample System Connection ············································ 7-5 External input/output specifications ······························· 9 13 17 19 19 20 21 23 27 8. Air Conditioning the Computer Room ························· 30 8-1 Main Features of the Floor-Duct Air Conditioners ·········· 8-2 Features of air-conditioner for computer room ················ 8-3 Step-by-Step Plan for the Implementation of the Air-Conditioning ··· 8-4 Conditions for the Installation of Computer-Room Air Conditioners ··· 8-5 Setting the Air conditioners ············································· 8-6 Automatic Control of the Computer Room ······················ 30 30 31 32 33 35 9. Maintenance/Inspection ··············································· 36 9-1 Maintenance/Inspection Schedule ······························· 36 1. Specifications 1-1.Main Features (1) List of Models PUHY-P250YGM-A PUHY-P500YGM-A } Outdoor Unit 10HP(Down flow): PFD-P250VM-E } Indoor Unit 20HP(Down flow): PFD-P500VM-E ✻ PFD-type indoor units cannot be connected to outdoor units other than the ones specified above. ✻ It is necessary to rewrite the S/W on the control circuit board of the outdoor unit connected to the PFD-type indoor units. ✻ PFD-type indoor units and other types of indoor units cannot coexist in the same refrigerant system. ✻ It is necessary to change pulley and V-belt when using it by the power supply frequency 60Hz. <10HP System> Outdoor Unit Indoor Unit PUHY-P250YGM-A PFD-P250VM-E G-50A ✻3 TB7 TB3 ✻2 ✻1 12V DC UP POWER SUPPLY UNIT MODEL PAC-SC50KUA POWER RATING 2.11kg WEIGHT SERIAL No. MITSUBISHI ELECTRIC CORPORATION M-NET PAC-SC50KUA When using a PFD-P250VM-E as an indoor unit, connect an outdoor unit PUHY-P250YGM-A to each indoor unit and operate with a built-in remote control for the indoor unit. ✻1: Bold line indicates refrigerant piping (gas/liquid). This system consists of single refrigerant circuit. ✻2: Indicates TB3-type transmission line that connects the indoor and outdoor units. This system consists of single refrigerant circuit. ✻3: Indicates TB7-Type transmission line that allows the unit to communicate with the controller. <20HP System> Single refrigerant circuit Outdoor Unit Indoor Unit PUHY-P500YGM-A PFD-P500VM-E G-50A TB7 TB3 ✻2 ✻1 12V DC UP POWER SUPPLY UNIT MODEL PAC-SC50KUA POWER RATING WEIGHT SERIAL No. 2.11kg MITSUBISHI ELECTRIC CORPORATION M-NET PAC-SC50KUA When using a PFD-P500VM-E as an indoor unit, connect an outdoor unit PUHY-P500YGM-A to each indoor unit and operate with a built-in remote control for the indoor unit. ✻1: Bold line indicates refrigerant piping (gas/liquid). This system consists of single refrigerant circuit. ✻2: Indicates TB3-type transmission line that connects the indoor and outdoor units. This system consists of single refrigerant circuit. ✻3: Indicates TB7-Type transmission line that allows the unit to communicate with the controller. 1 Two refrigerant circuits Outdoor Unit Indoor Unit PFD-P500VM-E PUHY-P250YGM-A G-50A TB7 TB3 ✻2 ✻1 12V DC ✻3 TB7 UP POWER SUPPLY UNIT MODEL PAC-SC50KUA POWER RATING WEIGHT SERIAL No. 2.11kg MITSUBISHI ELECTRIC CORPORATION PUHY-P250YGM-A TB3 M-NET PAC-SC50KUA When using a PFD-P500VM-E as an indoor unit, connect 2 PUHY-P250YGM-A outdoor units to each indoor unit and operate with a built-in remote control for the indoor unit. At factory shipment, this model of indoor unit is designed and set to accommodate a single refrigerant circuit. Connection of two refrigerant circuits to the indoor unit requires setting change and pipe work. ✻1: Bold line indicates refrigerant piping (gas/liquid). This system consists of two refrigerant circuits. ✻2: Indicates TB3-type transmission line that connects the indoor and outdoor units. This system consists of two refrigerant circuits. ✻3: Indicates TB7-type transmission line that allows the unit to communicate with the controller. 1-2. List of Possible Combinations of Indoor and Outdoor Units Model Name Indoor unit Outdoor unit 10HP system 20HP system PFD-P250VM-E PUHY-P250YGM-A PFD-P500VM-E PUHY-P250YGM-A x 2 or PUHY-P500YGM-A Cooling Heating Cooling Heating System capacity kW 28.0 31.5 56.0 63.0 System Power input kW 9.3 9.1 18.6 18.2 A 16.7/15.9/15.4 16.4/15.5/15.1 32.3/30.8/29.7 31.7/30.0/29.1 System current ✻1: Refer to the following pages for detailed specifications of each unit. ✻2: They were measured at operation under the following conditions: <Cooling> Indoor:27˚CDB/19˚CWB Outdoor:35˚CDB <Heating> Indoor:20˚CDB Outdoor: 7˚CDB/6˚CWB Pipe length:7.5m, Height difference:0m 2 1-3. Unit Specifications (1) Outdoor Unit Model name Capacity kW ✻1 Power source kW Power input A Current Type ✕ Quantity Fan m3/min Airflow rate Motor output kW Compressor Type kW Motor output Crankcase heater kW Heat exchanger Refrigerant / Lubricant External finish External dimension H x W x D mm Protection High pressure protection devices Compressor Fan Inverter Refrigerant High press. pipe piping diameter Low press. pipe ✻ 2 dB(A) Noise level kg Net weight Note: PUHY-P250YGM-A (-BS) connected with PFD series PUHY-P500YGM-A (-BS) connected with PFD series Cooling 28.0 Heating Cooling Heating 56.0 63.0 31.5 3N ~ 380/400/415V 50/60Hz 13.6 13.2 6.8 6.6 22.8/21.8/21.0 22.2/21.0/20.4 11.4/10.9/10.5 11.1/10.5/10.2 Propeller fan x 1 Propeller fan x 2 200 400 0.38 0.38 x 2 Hermetic 8.2+5.3 6.7 0.045 x 2 0.045 x 1 Salt resistant fin R410A/MEL32 Pre-coated galvanized sheets (+ powder coating for -BS type) <MUNSEL 5Y 8/1 or similar> 1,840 x 990 x 840 1,840 x 1,990 x 840 4.15MPa Over current protection / Over heat protection Thermal switch Over current protection / Thermal protection ø9.52 Flare (ø12.7 for over 90m) ø15.88 Flare ø22.2 Brazed ø28.58 Brazed 57/57 60/61 455 233 *1. Cooling/Heating capacity indicates the maximum value at operation under the following condition. <Cooling> Indoor : 27˚CDB / 19˚CWB Outdoor : 35˚CDB <Heating> Indoor : 20˚CDB Outdoor : 7˚CDB / 6˚CWB Pipe length : 7.5m Height difference : 0m *2. It is measured in anechoic room. ** Installation/foundation work, electrical connection work, duct work, insulation work, power source switch, and other items shall be referred to the Installation Manual. (2) Indoor Unit Model name System capacity kW Power source Power input kW Current A Type x Quantity Airflow rate m3/min Fan External static pressure Pa Motor Output kW Refrigerant External finish PFD-P250VM-E PFD-P500VM-E Heating ✻1 Cooling 31.5 56.0 3N~380/400/415V(50Hz), 400/415V(60Hz) Cooling 28.0 2.5 5.3/5.0/4.9 Sirocco fan x 1 160 120 2.2 Heating 63.0 ✻1 5.0 9.5/9.0/8.7 Sirocco fan x 2 320 120 4.4 R410A Galvanized steel plate (with polyester coating) <MUNSEL 2.9GY 8.6/0.3(White) 7.2GB 3.2/5.3(Blue) or similar> 1,950 x 1,980 x 780 1,950 x 1,380 x 780 External dimensions H x W x D mm Thermal switch Protection devices (Fan) Liquid pipe ø 9.52 Brazed (ø 12.7 for over 90m) Liquid pipe Single refrigerant ø 15.88 Brazed Refrigerant circuit Gas pipe Gas pipe ø 22.2 Brazed ø 28.58 Brazed piping diameter Two refrigerant Liquid pipe ø 9.52 Brazed (ø 12.7 for over 90m) ✻2 circuit Gas pipe ø 22.2 Brazed Refrigerant piping allowable length m 150 150 59 63 dB(A) Noise level Cross fin (Aluminum plate fin and copper tube) Heat exchanger Air filter PP Honeycomb fabric (washable) Net weight kg 380 520 Note: *1. Heating can be used only by the indoor warming-up. *2. At factory shipment, this model of indoor unit is designed and set to accommodate a single refrigerant circuit. Connection of two refrigerant circuits to the indoor unit requires setting change and pipe work. ** Installation/foundation work, electric connection work, duct work, insulation work, power source switch and other items are not specified in the specifications. 3 2. Capacity Curves 2-1. Cooling Capacity 1.4 Indoor unit inlet temperature (˚CWB) Capacity correction coefficient 1.3 1.2 1.1 24 1.0 0.9 19 15 0.8 12 0.7 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 Outdoor unit inlet temperature (˚CDB) 2-2. Cooling Input 1.3 Indoor unit inlet temperature (˚CWB) 24 1.2 Input Correction Coefficient 19 15 1.1 12 1.0 0.9 0.8 0.7 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 Outdoor unit inlet temperature (˚CDB) ✻ The correction curves indicate the values measured at the point where the compressor was operated at its maximum capacity. ✻ indicates the standard value. 4 2-3. SHF Curves Standard Capacity Ratio 130% 120%110%100% 90% 80% 70% 1 Indoor Temperature 27˚CDB 0.93 0.9 SHF 0.8 0.7 0.6 0.5 0.4 30 35 40 45 50 55 65 60 70 75 80 RH (%) Standard Capacity Ratio 130% 120%110%100% 90% 80% 70% 1 Indoor Temperature 24˚CDB 0.9 SHF 0.8 0.7 0.6 0.5 0.4 30 35 40 45 50 55 60 RH (%) Operation Temparature Range : Indoor : 12˚CWB~24˚CWB Outdoor : -15˚CDB~43˚CDB (RH : 30~80%) Standard Point " " : Indoor : 27˚CDB/19˚CWB Outdoor : 35˚CDB/- 5 65 70 75 80 2-4. Correction by refrigerant piping length To obtain a decrease in cooling/heating capacity due to refrigerant piping extension, multiply by the capacity correction factor based on the refrigerant piping equivalent length in the table below. Capacity correction coefficient 1 0.9 0.8 0.7 0 20 40 60 80 100 120 140 160 180 Piping equivalent length (m) • How to obtain piping equivalent length Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 ✕ number of bent on the piping)m 2-5. Operation limit Indoor temperature (˚CWB) • Cooling 30 25 20 15 12 10 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 Outdoor temperature (˚CDB) * The height between the Outdoor PUHY-P-YGM-A and Indoor could make the running temperature range narrow. For details refer to P19, 7-1 Refrigerant Piping System. • Heating Indoor temperature (˚CDB) 30 25 20 15 10 5 -20 -15 -10 -5 0 5 10 15 20 Outdoor temperature (˚CWB) 6 25 30 35 40 45 50 3. Sound Levels 3-1. Noise Level (1) Outdoor Unit 1m Measured point 1m Series Noise Level (dB [Type A]) PUHY-P250YGM-A 57 PUHY-P500YGM-A 60/61 (50Hz/60Hz) (2) Indoor Unit 1m Measured point 1m Series 7 Noise Level (dB [Type A]) PFD-P250VM-E 59 PFD-P500VM-E 63 3-2. NC Curves (External static pressure 0Pa) PUHY-P250YGM-A 63Hz 125Hz 250Hz 62.5 58.5 55.5 53 49.5 49 49 PUHY-P500YGM-A dB(A) 500Hz 1000Hz 2000Hz 4000Hz 8000Hz 43 57 (External static pressure 0Pa) 63Hz 125Hz 250Hz 50Hz 67 61.5 60.5 58 53.5 50.5 48 43 60Hz 68 65 60.5 59 54 51.5 49 43.5 dB(A) 500Hz 1000Hz 2000Hz 4000Hz 8000Hz 60 61 50Hz 90 OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa 90 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 20 10 Approximate minimum audible limit on continuous noise 63 125 NC-20 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 20 Approximate minimum audible limit on continuous noise 10 250 500 1000 2000 4000 8000 63 125 OCTAVE BAND CENTER FREQUENCIES (Hz) 63Hz 125Hz 250Hz 500Hz 70.6 62.7 60.5 56.1 1000Hz 2000Hz 4000Hz 8000Hz 54.8 45.7 39.7 32.9 250 500 1000 2000 4000 8000 (External static pressure 120Pa) PFD-P500VM-E dB(A) 63Hz 125Hz 250Hz 500Hz 59 82.8 70.5 65.6 57,0 1000Hz 2000Hz 4000Hz 8000Hz 55.1 51.1 44.7 dB(A) 37.9 63 90 OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa 90 80 NC-70 70 60 NC-60 50 NC-50 40 NC-40 30 20 NC-20 OCTAVE BAND CENTER FREQUENCIES (Hz) (External static pressure 120Pa) PFD-P250VM-E OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa 60Hz NC-30 Approximate minimum audible limit on continuous noise 10 63Hz 125Hz NC-20 250Hz 500Hz 1000Hz 2000Hz 4000Hz 80 NC-70 70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 20 Approximate minimum audible limit on continuous noise 10 63Hz 8000Hz OCTAVE BAND CENTER FREQUENCIES (Hz) 125Hz 250Hz NC-20 500Hz 1000Hz 2000Hz 4000Hz 8000Hz OCTAVE BAND CENTER FREQUENCIES (Hz) 3-3. Fan Characteristics Curves PFD-P250VM-E PFD-P500VM-E : 50/60Hz, standard : 50/60Hz, standard 1000 1000 Output 3.7kW Total static pressure (Pa) 800 900 Fan rotation speed 1200rpm 700 1100rpm 600 (Output 2.2kW) 500 1000rpm 400 900rpm 300 800rpm 130 Output 5.5kW 600 1100rpm 500 400 300 200 1000rpm 800rpm Internal resistance 100 100 0 1200rpm 700 900rpm Internal resistance (middle-high efficient filter ) Internal resistance 200 136 0 255 250 184 140 150 160 170 Internal resistance (middle-high efficient filter ) Output 7.5kW 800 Total static pressure (Pa) 900 Fan rotation speed 1300rpm 180 190 3 Air volume (m /min) 8 Standard With a middle-high efficient filter 272 318 345 270 290 310 330 350 Air volume (m3/min) 368 370 166 768 5 Cross section Y – Y 12 ø53 136 Note1.Use the opening at the bottom of the unit when running the power supply line from the front or from the side of the unit. Note2.Please refer to the next page for information regarding necessary spacing around the unit and foundation work. 553 117 Left side view Air outlet 117 80 135 <Left piping hole> Refrig. service valve(Gas) <Flange> 100 Refrig. service valve (Liquid) <Flare> X Service panel 67 207 83 67 160 Front view Knockout hole <Front piping hole> Top view 990 900(mounting pitch) 207 67 840 X 45 PUHY-P250YGM-A 37 Knockout hole 40 45 Knockout hole 2X2-14X20 0val hole (Mounting hole) ø27 Knockout hole <Left side hole for control wiring> Air inlet ø62 Knockout hole <Hole for power supply> Changeable to ø27,ø33 by using attached conduit mounting plate <Accessory> 37 Air inlet 20 70 80 57 <Accessories> • Refrigerant (Gas) conn. pipe......1 pc. (Already installed on the unit) • Packing for conn. pipe................1 pc. (Attached near the ball valve) • Conduit mounting plate ø33, ø27..............................1 pc.Each • Tapping screw M4......................2 pcs. 80 Cross section X – X Knockout hole <Bottom piping hole> 65 160 10 90 Conn. pipe(Liquid) ø9.52 <Flare> Y 134 100 Conn. pipe(Gas) ø22.2 <Brazed> 280 ø27 Knockout hole <Bottom hole for control wiring> 235 877 1840 Y 44 150 9 11 78 16 845(mounting pitch) 16 265 1575 494 4. External Dimensions Unit : mm 80 5 162 768 Conn. pipe(Liquid) ø15.88<Flare> 65 160 80 37 Air inlet Y Y 115 Left side view Air outlet 115 80 135 Knockout hole 37 <Left piping hole> 40 ø27 Knockout hole <Left side hole for control wiring> Air inlet 45 Refrig. service valve(Gas) <Flange> 100 Refrig. service valve (Liquid) <Flare> X Service panel Knockout hole ø62 Knockout hole 3X2-14X20 Oval hole <Hole for power supply> Changeable to ø46,ø53 by using (Mounting hole) attached conduit mounting plate <Accessory> ø27 Knockout hole <Bottom hole for control wiring> Cross section X – X Y Note1.Use the opening at the bottom of the unit when running the power supply line from the front or from the side of the unit. Note2.Please refer to the next page for information regarding necessary spacing around the unit and foundation work. <Accessories> • Refrigerant (Gas) conn. pipe....1 pc. (Already installed on the unit) • Packing for conn. pipe......1 pc. (Attached near the ball valve) • Conduit mounting plate ø53, ø46......1 pc.Each • Tapping screw M4...2 pcs. Cross section Y – Y 12 Conn. pipe(Gas) ø28.58<Brazed> 57 145 Knockout hole <Bottom piping hole> 89 ø53 20 70 553 134 100 Y 280 1000 235 68 205 83 67 160 Top view 1990 Front view Knockout hole <Front piping hole> 950(mounting pitch) 950(mounting pitch) 205 68 45 265 494 44 150 X 877 1840 16 845(mounting pitch) 16 1575 840 11 78 10 10 PUHY-P500YGM-A Unit : mm Filter 1380 Air outlet Air inlet Power supply:White Operating :Green Check :Yellow Failure :Red Control box Lifting bolts (Accessory) Remote controller Changeover switch <Nomal/Local> Refrig. piping <liquid> ø9.52 braze Hole for the control wiring <ø32 knook out hole> 140 Lamp 1950 A Hole for the control wiring <ø32 knook out hole> Hole for the power supply <ø32 knook out hole> 100 <2-ø32 knook out hole> Hole for the power supply(Body) 50 100 50 780 68 260 401 100 100 Panel <view from A> 1340 1180 Air outlet 462 140 Service space Hole for gas pipe connecting(ø42) Hole for liquid pipe connecting(ø24) Indoor unit Service space Unit front figure 400 or more 20 Hole for liquid pipe connecting(ø24) Hole for gas pipe connecting(ø42) <Accessory> · Lifting bolts ······4pc. · Front panel opening and closing key ······1pc. Emergency drain piping connection <Rp1-1/4> 100 340 186 Bolt holes:8-ø18 Main drain piping connection <Rp1-1/4> Hole for the power supply(ø60) Hole for the control wiring(ø60) Unit surface figure Pipe execution space 500 or more Indoor unit Refrig. piping <gas> ø22.2 braze Drain piping connection for humidifier <Rp1-1/4> 20 800 or more 321 518 220 87 200 or more 68 Air inlet 220 320 50 390 20 740 580 20 100 305 410 171 150 65 11 260 Note1. Be sure to set up a trap for Emergency drain piping. (Trap height:beyond 100mm) (Trap is not necessary for main drain piping.) 2. Approve this figure because it is refused for the improvement and specification subject to change without notice. 3. Amputate a gas pipe/liquid pipe in the fixed height at the time of 2 refrigerant circuit connection, and connect it with the local pipe. PFD-P250VM-E Unit : mm Hole for the power supply(Body) <2-ø 32 knook out hole> 50 Control box 100 Hole for the control wiring <ø 32 knook out hole> Hole for the power supply <ø 32 knook out hole> Air outlet 1980 A Air inlet Lifting bolts (Accessory) 1950 Refrig. piping <liquid> in 2 refrig. circuit system ø 9.52 braze No.1 Hole for the control wiring <ø 32 knook out hole> 100 Filter Remote controller Changeover switch <Normal/Local> 140 Lamp 1940 1780 Air outlet 359 370 <view from A> 241 Refrig. piping <gas> in 2 refrig. circuit system type P450:ø 19.05 braze, type P560:ø 22.2 braze No.1 Refrig. piping <liquid> in 2 refrig. circuit system ø 9.52 braze No.2 Refrig. piping <gas> ø 28.58 braze 124 68 68 Air outlet 359 838 Refrig. piping <gas> in 2 refrig. circuit system type P450:ø 19.05 braze, type P560:ø 22.2 braze No.2 220 321 Refrig. piping <liquid> ø 15.88 braze 50 68 780 Panel 20 100 Drain piping connection for humidifier <Rp1-1/4> Hole for the power supply(ø 60) Hole for the control wiring(ø 60) Indoor unit Service space Unit front figure 400 or more 440 120 Hole for liquid side pipe connecting or No.1 gas side pipe connecting(ø 42) in 2 refrig. circuit system Hole for gas side pipe connecting or No.2 liquid side pipe connecting(ø 48) in 2 refrig. circuit system Hole for No.2 gas side pipe connecting(ø 42) in 2 refrig. circuit system Hole for No.1 liquid side pipe connecting (ø 24) in 2 refrig. circuit system 20 100 Hole for No.2 gas pipe connecting(ø 42) in 2 refrig. circuit system 185 Hole for No.2 liquid pipe connecting(ø 24) in 2 refrig. circuit system Hole for liquid pipe connecting(ø 34) Bolt holes:8-ø 18 Hole for No.1 liquid pipe connecting (ø 24) in 2 refrig. circuit system Hole for No.1 gas pipe connecting(ø 42) in 2 refrig. circuit system Main drain piping connecting<Rp1-1/4> Hole for gas pipe connecting(ø 48) ✻1. It is necessary for the removal of the panel beyond 600mm. 1000 or more ✻1 Emergency drain piping connection <Rp1-1/4> 20 740 20 Power supply :White Operating :Green Check :Yellow Failure1 :Red Failure2 :Red 379 Air inlet 81 <Accessory> · Lifting bolts ······4pc. · Front panel opening and closing key ······1pc. 50 305 410 171 150 65 100 580 100 220 320 680 710 135 135 68 124 12 390 Note1. Be sure to set up a trap for Emergency drain piping. 200 or more 500 or more (Trap height:beyond 100mm) (Trap is not necessary for main drain piping.) Pipe execution 2. Approve this figure because it is refused space Indoor unit for the improvement and specification subject to change without notice. Panel opening Unit surface 3. Amputate a gas pipe/liquid pipe in the and closing figure fixed height at the time of 2 refrigerant dimension circuit connection, and connect it with Service space the local pipe. PFD-P500VM-E Unit : mm N PE N L3 blue black L3 L1 L2 shield TB3 (Terminal Block) M1 orange M2 yellow S TB7 (Terminal Block) M1 brown M2 red shield 21S 4b SV 5b TB1 (Terminal Block) L1 red L2 white INDOOR/OUTDOOR TRANSMISSION LINE Power source 3N~ 380/400/415V 50/60Hz 63H1 21S 4a CENTRAL CONTROL TRANSMISSION LINE CH11 SV1 52 C1 CN21 1 2 3 blue E N L3 black blue detection circuit X02 X03 X08 CNTYP4 21 R22 Maintenance setting LD2 CNTYP5 321 R23 CN20 F01 250VAC 6.3A T ~+ ~ ~– black ZNR4 C5 52C1 R1 R2 DCL 1234 12 123 red CN40 CNS1 blue CNS2 blue 7 1 3 red 1234 C4 ACCT IPM CNDC2 4 3 2 1 ACCT-U U red V W 1 black 9 1 2 4 1 L1 12 CNL1 700VDC 2A T 9 10 13 14 5 CN15V2 6 9 1 2 CNDR2 1 2 3 CNDC2 4 black 1 1 CNVCC1 8 ON OFF 1234 1 6 ON OFF 4 SW2 1 12 345 CNAC2 Function setting SW1 THHS1 1 2 7 12 CNTH green 3 2 1 CNFAN red CNFG blue CNRS1 X01 1 F01 250VAC 2A T LED1 operation LED2 error Power circuit board 1 CNCT CNIN blue 8 1 THHS5 4 3 CNCT2 2 blue 1 F02 12 13 14 L2 CNL2 9 10 CN15V1 56 CNDR1 CNDC1 2 black 3 ACCT -W white CNFG 1 2 blue green 1 4 7 CNTH 2 green 1 CNINV Filter board 8 CNOUT 1 4 CNVDC 1 2 3 1 LED1 operation LED2 error CNRS2 FAN control board CNTR 7 1 Gate amp board 1 N P T01 (Transformer) Compressor ON/OFF Trouble SNOW *1 Compressor ON/OFF NIGHT MODE DCCT black 8 7 1 1 CNRS3B + R3 C2 + R4 C1 1234 CN41 1 2 3 4 5 CN51 CNAC3 1 black 2 CNRS3A 12V CN3S 2 red 1 3 3 CN3D 2 1 CNVCC1 CNLVB red 12 3456 LEV1 Power selection connector Address setting Refer to the service handbook about the switch operations. 2 1 0 SWU2 SWU1 SWU3 Function setting *1 10 10 10 10 10 SW5 SW4 SW3 SW2 SW1 OFF ON OFF ON OFF ON OFF ON OFF ON 1 1 1 1 1 LD1 Control circuit board X11 CNH 321 CNL black 321 63HS 123 63LS 123 red white black DS1 (Diode stack) 12345 X01 CN01 21 TH11 red white black detection circuit X09 CN02 detection circuit 87 65 43 21 21 CNTYP1 red F02 250VAC 6.3A T 1 CN32 2 3 1 CN33 2 3 4 5 6 9 5 1 CN36 1 CN35 2 red 3 1 CN38 2 green 3 1 2 X52 3 CN52C yellow ACNF1 (Noise Filter) red L1 white L2 A2 white blue A1 TH8 TH7 TH6 TH5 white Inverter controller box Z20 red 13 black red MF1 CN04 3 2 1 3 2 1 W V U Earth terminal CN3D 1-2P OPEN SHORT Motor (Compressor) NOTE:The broken lines indicate field wiring. CN3D Compressor ON/OFF 1-3P OPEN ON SHORT OFF NIGHT MODE OFF ON Name AC Current Sensor DC Current Sensor DC reactor (Power factor improvement) Magnetic contactor (Inverter main circuit) Fan motor (Radiator panel) Crank case heater(Compressor) 4-way valve Solenoid valve (Discharge-suction bypass) Solenoid valve (Heat exchanger capacity control) Electronic expansion valve (SC coil) Thermistor Discharge pipe temp. detect Pipe temp.detect(Hex outlet) OA temp.detect liquid outlet temp.detect at Sub-cool coil bypass outlet temp.detect at Sub-cool coil Radiator panel temp. detect (Compressor) Radiator panel temp. detect(Fan) High pressure switch High pressure sensor Low pressure sensor Choke coil(Transmission) Function device *1: Function according to switch operation. (SW4-7,CN3D 1-2P,and CN3D 1-3P) SW4-7:OFF (Compressor ON/OFF and NIGHT MODE) Fan motor (Heat exchanger) U V MC1 W MF THHS5 63H1 63HS 63LS L1,L2 Z20 THHS1 TH8 TH11 TH5 TH6 TH7 LEV1 SV5b MF1 CH11 21S4a,b SV1 52C1 Symbol ACCT DCCT DCL <Symbol explanation> 5. Electrical Wiring Diagrams PUHY-P250YGM-A (Connected with PFD series) U MC2 V W PE red white black L1 L2 L3 N Motor (Compressor) Power source 3N~ 380/400/415V 50/60Hz INDOOR/OUTDOOR TRANSMISSION LINE CENTRAL CONTROL TRANSMISSION LINE S TB3 (Terminal Block) M1 orange M2 yellow TB7 (Terminal Block) M1 brown M2 red 21S 4b SV3 SV 5b L1 L2 L3 52C2 51C2 F12 AC660V 50A F TB1 (Terminal Block) L1 red L2 white L3 black N blue shield shield CH11 21S 4a 21S 4c SV 5c SV1 63H2 63H1 2 4 6 F11 AC660V 50A F E ACNF (Noise Filter) L1 red L2 white black L3 blue N CN32 CN33 CN34 red CN36 detection circuit X01 X02 X03 X05 X06 X07 X08 X09 CN02 21 63HS CNL black 321 CNH 321 ~ ~ ~– black DS (Diode stack) red + 123 ZNR4 C5 12 CNS2 CNS1 blue blue CNTYP5 321 R23 DCL 1234 52C1 R1 R2 CN40 power selection connector 12V 1 + C1 R3 C2 + R4 black red C4 P 1 4 ACCT IPM CNDC2 U red L2 black ACCT-W 9 10 13 14 9 10 13 14 6 1 8 X3 X1 1 ON OFF 1234 SW1 6 ON OFF 4 SW2 1 12 345 CNAC2 THHS1 F01 250VAC 2A T Function setting 1 LED1 operation LED2 error 7 green 1 2 CNTH CNFAN red 3 2 1 CNFG blue red MF3 1 2 3 4 CN04 1 2 3 CN05 yellow A2 U white V black W 52F 52F A1 1 2 95 96 51C2 black 52 purple A2 C2 A1 52C2 13 14 orange L1 L2 L3 gray red brown white X01 CNRS1 red white black 3 CNCH 1 blue 2 3 CN52F 1 yellow 2 1 CN52C2 2 blue 3 4 5 1 CN51C2 23 Power circuit board CNVCC1 CNCT 5 CN15V2 6 1 black 4 CNDC2 F02 700VDC 1 2A T 4 3 CNCT2 2 blue 1 L1 12 CN15V1 5 1 12 9 CNDR2 1 2 CNDR1 W 1 CNDC1 black 4 white CNFG 1 2 blue CNIN blue 8 CNL2 CNL1 1 CNTH 2 green 1 7 4 1 THHS5 CNRT2 5 4 3 2 1 CNINV 1 2 3 4 CNOUT2 X2 Relay board 9 1 2 V Filter board CNOUT 8 green 1 1 2 3 4 CNVDC ACCT-U 1 2 3 Gate amp board N CNRS2 FAN control board LED1 operation LED2 error CNTR 7 1 Compressor ON/OFF Trouble SNOW *1 Compressor ON/OFF NIGHT MODE T01 (Transfomer) DCCT 8 1 7 1234 CNVCC1 CNRS3B 1 3 7 CNAC3 1 black 2 CNRS3A CNRT1 red 1 2 3 4 5 6 5 4 3 2 1 1 2 3 4 5 CN51 CN3S 3 red 21 1 3 CN3D 2 CNOUT1 yellow CNLVB red 123456 LEV1 1 2 3 4 CN41 Maintenance setting LD2 Address setting Refer to the service handbook about the switch operations. 2 1 0 SWU2 SWU1 SWU3 *1 Function setting 10 10 10 10 10 SW5 SW4 SW3 SW2 SW1 OFF ON OFF ON OFF ON OFF ON OFF ON 1 1 1 1 1 LD1 21 R22 CNTYP4 123 123 red white black 63LS red white black Control circuit board detection circuit CN13 CN01 8 7 6 5 4 3 2 1 4321 TH12 TH11 detection F02 circuit 250VAC F01 6.3A T 250VAC CN21 1 2 3 CN20 1 2 3 4 5 6.3A T blue 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 1 CN35 2 red 3 3 CN52C yellow 1 CN38 2 green 1 2 X52 3 white blue 52 A2 C1 white A1 21 CNTYP1 red TH8 TH7 TH6 TH5 red 1 2 3 1 2 3 black white red Z20 black 14 red Inverter controller box 1 2 3 1 2 3 MF2 MF1 Motor (Compressor) U V MC1 W Fan motor (Heat exchanger) U V W Fan motor (Heat exchanger) U V W CH12 NIGHT MODE OFF ON NOTE:The broken lines indicate field wiring. SW4-7:OFF (Compressor ON/OFF and NIGHT MODE) CN3D Compressor CN3D ON/OFF 1-3P 1-2P OPEN ON OPEN SHORT OFF SHORT *1: Function according to switch operation. (SW4-7,CN3D 1-2P,and CN3D 1-3P) Earth terminal Name AC Current Sensor DC Current Sensor DC reactor (Power factor improvement) 52C1 Magnetic contactor (Inverter main circuit) 52C2 Magnetic contactor(No.2Compressor) 51C2 Overload relay(No.2Compressor) 52F Magnetic contactor(Fan motor) MF3 Fan motor (Radiator panel) CH11,12 Crank case heater(Compressor) 21S4a,b,c 4-way valve SV1,3 Solenoid valve (Discharge-suction bypass) SV5b,c Solenoid valve (Heat exchanger capacity control) LEV1 Electronic expansion valve (SC coil) TH11,12 Thermistor Discharge pipe temp. detect TH2 Gas pipe temp.detect (Hex outlet) TH5 Pipe temp.detect(Hex outlet) TH6 OA temp.detect TH7 liquid outlet temp.detect at Sub-cool coil TH8 bypass outlet temp.detect at Sub-cool coil THHS1 Radiator panel temp. detect (Compressor) Radiator panel temp. detect(Fan) THHS5 63H1,2 High pressure switch 63HS High pressure sensor 63LS Low pressure sensor L1,L2 Choke coil(Transmission) Z20 Function device Symbol ACCT DCCT DCL <Symbol explanation> PUHY-P500YGM-A (Connected with PFD series) LEV TH23 TH22 TH21 TH24 6 5 4 3 2 1 345 15 SW1 Z3 21 21 21 21 CN60 33P1 T 21 321 6543213 CN28 CN22 CN20 CN21 CN29 CN31 7654321 CN7V CNT 1 31 CN3T ZNR901 F901 CN52 12345 Dehumidify X07 31 31 CN2M CN90 Z1 157 9 1 2 3 2 1 1 2 3 MF I.B. CN3A X06 X05 X04 CN32 CND CNP CN33 ZNR1 DSA1 X01 CN51 123456 51F Z1 Z3 52F FAN over current detection 52F Note: 1. The dotted lines show field wiring. 2. The address setting of the indoor unit should always be odd. 3. The outdoor unit to which the indoor unit is connected with the transmission line, the address of the outdoor unit should be the indoor unit +50. 4. Mark indicates terminal bed, connector, board insertion connector or fastening connector of control board. 5. Use a contactor for low voltage. (with voltage of DC12V maximum current is 1mA) SW3 Address (odd) CN25 CN24 9 0 1 12 12 SW14 SW12 SW11 (2nd digit) (1st digit) 678 9A B CD 9 0 1 7 8 X11 2 3 SWC SW5 SW8 SW4 SW7 SW2 0 EF 1 2 4 5 6 2 3 4 5 6 7 8 ZNR2 51F DSA1 S.B. ZNR1 L1 AC 1 2 3 4 5 IFB X11 B2 C 1 CN54 2 TB22 3 4 5 1 TB23 A1 2 A2 3 CN53 BC 4 TB21 B1 5 F1 3 3 L2 L3 N 1 2 3 2 1 6 5 2 1 3 4 5 6 TB2 SHIELD S B1 A1 TB5 CN1 1 1 2 1 TB15 2 1 Inside section of control box L L3 L L4 L2 L1 PE CN52 Indoor unit contorol board SW:Defumidify order Z:Relay <Note5> 1(brown) 5(green) External input adapter (PAC-SA88HA) The signal input of the dehumidify order is to connect wiring referring to the bottom figure. LED display(check) Power supply DC30V, AC100/200V Status output Failure output Distant location on/off <no voltage or current> Power supply DC12~24V Distant location on/off <with voltage and current> SW9 Switch(normal/local) PE Power supply 3N~ 380/400/415V(50Hz) 400/415V(60Hz) LED display(power supply) LED display(status) LED display(failure) Indoor unit Control wiring DC24~30V RC Z Relay circuit Z SW Power Distant control panel (field supply and construction) NAME Fan motor Indoor controller board Surge absorber board External input/output board Power source terminal bed Transmission terminal bed Transmission terminal bed Terminal bed for distant location on/off <No voltage or current> Terminal bed for distant location display TB22 Terminal bed for distant location on/off TB23 <With voltage and current> Fuse<6-3/6A> F901 Fuse<5A> F1 ZNR1, ZNR2, ZNR901 Varistor DSA1 Surge absorber Transformer T Electronic linear expan.valve LEV Contactor(fan I/D) 52F Over current relay (fan I/D) 51F Float switch 33P1 TH21 Thermistor (inlet temp.detection) TH22 Thermistor (piping temp.detection/liquid) TH23 Thermistor (piping temp.detection/gas) TH24 Thermistor (outlet temp.detection) Switch (for mode selection) SW1(I.B.) Switch (for capacity code) SW2(I.B.) Switch (for mode selection) SW3(I.B.) Switch (for model selection) SW4(I.B.) Switch (normal/local) SW9 Switch (1st digit address set) SW11(I.B.) Switch (2nd digit address set) SW12(I.B.) Switch (connection No.set) SW14(I.B.) Switch (outlet/inlet temp.control) SWC(I.B.) X11 Auxiliary relay(check) Z1 Auxiliary relay(fan) Z3 Auxiliary relay(fan failure detection) L1 LED display (failure) L2 LED display (status) LED display (check) L3 L4 LED display (power supply) RC MA Remote controller SYMBOL MF I.B. S.B. IFB TB2 TB5 TB15 TB21 PFD-P250VM-E SW4 SW7 SW2 SWC SW5 SW8 EF 0 1 2 B CD 90 1 Address (odd) CN7V No.1 7654321 ZNR1 X01 DSA1 CN51 CN52 F901 12345 12 3 4 5 Dehumidify CN3A X07 X06 X05 X04 CN2M I.B.1 90 1 90 1 12 CN7V No.2 7654321 LEV1A 33P1 LEV1 LEV1B AD.B. ZNR1 X01 DSA1 CN51 CN52 F901 12345 12345 Dehumidify 654321 654321 654321 X07 X06 X05 X04 I.B.2 Z1 CN32 CN2M Z3 33P2 <note2> T Z2 51F 1 2 3 2 1 1 2 3 <note2> CN3A SW14 SW12 SW11 ZNR901 (2nd digit) (1st digit) SW3 SW1 CN28 CN22 CN20 CN21 CN29 CN31 CN60 CN3T CNT CND CNP CN33 CN90 21 2 1 2 1 21 21 3 21 6 5 4 3 2 1 3 1 3 1 13 5 3 1 3 1 1 57 9 Address (odd) CN24 CN25 12 X12 Z3 T 1 2 3 1 2 3 2 1 1 3 2 1 Note: MF 1. The dotted lines show field wiring. 2. It is wiring for 1 refrigerant system at the time of shipping. Change wiring and SW2, 3, 4 (No.1&No.2) as this figure in field when you change it to 2 refrigerant circuit 3. Set up the address of No.1 board in the odd number, and set up the address of No.2 board in the even number. But, set up the address of the No.2 board in the No.1 board +1. 4. The outdoor unit to which the indoor unit is connected with the transmission line, the address of the outdoor unit should be the indoor unit +50. 5. Set up the zone No. (SW14) from 1 to 5 when you connect a concentration controller. (Install an indoor unit within 20 units in the all 5 zone.) 6. Mark indicates terminal bed, connector, board insertion connector or fastening connector of control board. 7. Use a contactor for low voltage. (with voltage of DC12V maximum current is 1mA) TH23-2 TH22-2 6 5 4 3 2 1 6 5 4 3 2 1 12 CN24 CN25 2 3 TH21-2 TH24-2 LEV2 LEV1 TH23-1 TH22-1 7 8 TH21-1 90 1 X11 7 8 ZNR901 CN32 SW14 SW12 SW11 (2nd digit) (1st digit) SW3 SW1 CN28 CN22 CN20 CN21 CN29 CN31 CN60 CN3T CNT CND CNP CN33 CN90 21 2 1 2 1 21 21 3 21 6 5 4 3 2 1 3 1 57 9 1 31 13 5 31 31 345 6789A 16 45 6 2 3 45 6 TH24-1 B CD 6789A 345 SWC SW5 SW8 SW4 SW7 SW2 EF 0 1 2 45 6 7 8 12 2 3 45 6 2 3 7 8 52F Z3 ZNR2 51F 6 5 4 3 2 1 2 refrigerant circuit 1 refrigerant circuit (at the time of shipping) PFD-P500VM-E TB2 3 4 5 6 CN2M CN3A 2 L L 1 2 3 2 1 L4 L2 L L L5 L3 L1 1 2 3 4 5 6 7 8 9 10 12345 12345 ON SW4 ON <note2> Connect a connector to CN3A, CN2M of I.B.2 board. 1 2 3 4 5 6 7 8 9 10 ON 123 4 56 L2 L3 N I.B. 2 123 4 56 ON SW3 654321 CN60 CN53 L1 1 2 3 AC TB23 A1 A2 BC TB21 B1 B2 C 1 CN54 2 TB22 3 4 5 SHIELD IFB S B2 A2 TB5-2 4 3 X12 1 X11 1 2 3 4 5 F1 3 3 ON SW2 DSA1 S.B. CN1 1 1 ON How to set up to SW2, 3, 4. (In case of 2 refrigerant circuit) LEV2 Remove the LEV1B connector from AD.B. board, and connect it to CN60 of I.B.2 board. How to connect in case of 2 refrigerant circuit. FAN over current detection 52F Z1 Z2 ZNR1 2 1 6 5 2 1 SHIELD S B1 A1 TB5-1 TB15 2 1 Inside section of control box PE <note2> LED display(check) F901 F1 ZNR1, ZNR2, ZNR901 DSA1 T LEV1, 2 52F 51F 33P1, 33P2 TH21-1, TH21-2 TH22-1, TH22-2 TH23-1, TH23-2 TH24-1, TH24-2 SW1(I.B.) SW2(I.B.) SW3(I.B.) SW4(I.B.) SW9 SW11(I.B.) SW12(I.B.) SW14(I.B.) SWC(I.B.) X11, X12 Z1, Z2 Z3 L1 L2 L3 L4 L5 RC TB22 TB23 CN52 Indoor unit contorol board SW:Defumidify order Z:Relay <Note7> 1(brown) 5(green) External input adapter (PAC-SA88HA) The signal input of the dehumidify order is to connect wiring referring to the bottom figure. LED display(No.2 failure) No.2 Indoor unit Control wiring DC24~30V Power supply DC12~24V Distant location on/off <with voltage and current> Distant location on/off <no voltage or current> Power supply DC30V, AC100/200V No1.Status output No1.Failure output No2.Status output No2.Failure output SW9 Switch(normal/local) PE Power supply 3N~ 380/400/415V(50Hz) 400/415V(60Hz) LED display(power supply) LED display(status) LED display(No.1 failure) No.1 Indoor unit Control wiring DC24~30V RC SYMBOL MF I.B.1, I.B.2 AD.B. S.B. IFB TB2 TB5-1, -2 TB15 TB21 Z Relay circuit Z SW Power Distant control panel (field supply and construction) NAME Fan motor Indoor controller board Adapter board Surge absorber board External input/output board Power source terminal bed Transmission terminal bed Transmission terminal bed Terminal bed for distant location on/off <No voltage or current> Terminal bed for distant location display Terminal bed for distant location on/off <With voltage and current> Fuse <6.3/6A> Fuse <5A> Varistor Surge absorber Transformer Electronic linear expan.valve Contactor(fan I/D) Over current relay (fan I/D) Float switch Thermistor (inlet temp.detection) Thermistor (piping temp.detection/liquid) Thermistor (piping temp.detection/gas) Thermistor (outlet temp.detection) Switch (for mode selection) Switch (for capacity code) Switch (for mode selection) Switch (for model selection) Switch (normal/local) Switch (1st digit address set) Switch (2nd digit address set) Switch (connection No.set) Switch (outlet/inlet temp.control) Auxiliary relay(check) Auxiliary relay(fan) Auxiliary relay(fan failure detection) LED display (No.1 failure) LED display (No.2 failure) LED display (status) LED display (check) LED display (power supply) MA Remote controller PFD-P500VM-E TH6 HEX F SV5b TH5 HEX B TH8 SCC 21S4b TH11 CJ1 63H 17 LEV1 CP2 ST3 63HS COMP O/S 21S4a ST8 ST4 CP1 SV1 Drier TH7 ST7 ST6 ACC ST2 63LS CJ2 ST1 BV2 BV1 6. Refrigerant Circuit Diagram And Thermal Sensor PUHY-P250YGM-A TH6 SV5b HEX1b (F) HEX1a (F) HEX2b (B) 21S4b SV5c 21S4c 18 TH5 HEX2a (B) 21S4a TH8 63H1 O/S SCC COMP 1 TH11 CV1 CP1 CP3 ST9 LEV1 ST8 Oil Tank CP2 ST6 SV1 ST5 63HS CJ1 CJ3 TH7 63H2 O/S Drier ST7 CV2 SV3 COMP 2 TH12 ST13 ST12 ST11 ST10 ACC 63LS CJ2 ST2 ST1 BV2 BV1 PUHY-P500YGM-A 7. System Design 7-1.Refrigerant Piping System ■ Sample connection <Refrigerant system with one outdoor unit> Outdoor unit <Refrigerant system with two outdoor units> Outdoor unit A A L L H H L Indoor unit Allowable piping length Allowable height difference ■ Pipe selection Indoor unit Farthest piping length(L) 150 m or less in actual length Height difference between indoor 50 m or less (40 m if outdoor unit is below indoor unit, and outdoor units (H) 15 m if outside temperature is 10˚C or below) Outdoor unit model Liquid pipe size P250 ø 9.52 ✻1 P500 ø 15.88 Gas pipe size ø 22.2 ø 28.58 ✻1 Use ø 12.7 pipes when the pipe length exceeds 90 m. ■ Amount of refrigerant charge Refrigerant for extension piping is not included at factory shipment. Add an appropriate amount of refrigerant for each system on site. Write down the size and the length of the piping in each system as well as the amount of added refrigerant on the outdoor unit as a reference for servicing. ■ Calculating the amount of refrigerant to be added • The amount of refrigerant that is necessary for extension piping is calculated based on the size and the length of the liquid piping. • Use the following formula to figure out the amount of refrigerant to be added. • Round up the calculation result to the nearest 0.1 kg. (e.g., If the result is 16.08 kg, round up the .08 to .1 , which yields 16.1 kg.) <Amount of refrigerant to be added> ✻ Refrigerant charge calculation Liquid pipe size Liquid pipe size Total length of the ø 15.88 pipes x 0.2 Total length of the ø 9.52 pipes x 0.06 + (m) x 0.2(kg/m) ✻ Amount of charged refrigerant at factory shipment Outdoor unit Charged refrigerant model amount(kg) P250 9.5 P500 22.0 + Total capacity of connected indoor units Amount for the indoor unit P250 model 2.0kg P500 model 4.0kg ✻ 2 kg x 2 when connected to a system with two outdoor units (m) x 0.06(kg/m) ✻Sample calculation <Connection to a system with one outdoor unit> 500 model indoor unit : When ø 15.88 pipes are used and the piping length is 150 m 150(m) x 0.2(kg/m)+4.0kg=34.0kg <Connection to a system with two outdoor unit> 500 model indoor unit : When ø 9.52 pipes are used and the piping length is 80 m 80(m) x 0.06(kg/m)+2.0kg=6.8kg (Amount for the extension pipe to each outdoor unit) Caution Charge Liquid Refrigerant Filling the equipment with gas refrigerant will result in a power loss due to transformation of refrigerant in the tank. 19 7-2.Control Wiring Restrictions when the PFD-type indoor units are connected (related to the system) 1. It is necessary to rewrite the S/W on the controller circuit board of the outdoor unit connected to the PFD-type indoor units. 2. The outdoor units whose S/W is changed to the dedicated S/W described above cannot be connected to the indoor units other than the PFD-type indoor units. 3. The PFD-type indoor units cannot be connected to the ME remote controller. 4. The address settings must be made on this system. The automatic address setup cannot be made. 5. The following functions cannot be selected on the PFD-type indoor units. (1) Switching between automatic power recovery Enabled/Disabled (Fixed to "Enabled" in the PFD-type indoor units) (2) Switching between power source start/stop (Fixed to "Disabled" in the PFD-type indoor units) 6. The PFD-type indoor units and other types of indoor units cannot be grouped. 7. The following functions are limited when the system controller (such as G-50A) is connected. (1) To perform group operation in the system with two refrigerant circuits (combination of two outdoor units and one indoor unit <P500 model only>), the addresses of the controller boards No.1 and No.2 on a indoor unit must be set within a group. (2) The local operation cannot be prohibited with the main remote controller. (3) When the switches of the PFD-type indoor units are set as follows, the unit ON/OFF operation cannot be made with the main remote controller. 1 When the Normal/Local switching switch is set to "Local" 2 When the DipSW1-10 on the controller circuit board is set to "ON" (1) Specifications of control wiring and maximum length of wiring Transmission line is a type of control line. When the source of noise is located adjacent to the unit, the use of shield cable as well as moving the unit as far away from the noise source are recommended. 1 Transmission line (M-NET transmission line) System component For multiple-refrigerant system Length of transmission line n/a Facility type (noise level measurement) All types of facilities Cable type Shield cable CVVS · CPEVS · MVVS No. of cable 2-core cable Diameter Over 1.25mm2 Wiring specifications Total length of indoor/outdoor transmission line Maximum length: 200m Maximum length of centralized control transmission line and Indoor/Outdoor transmission line via indoor/outdoor units: 500m maximum 20 2 Remote control wiring MA remote controller ✻ 1 Cable type VCTF · VCTFK · CVV · CVS · VVR · VVF · VCT No. of cable 2-core cable Diameter 0.3~1.25mm2 (0.75~1.25mm2) Wiring specifications Total Length ✻2 ✻3 Maximum length: 200 m ✻ 1: “MA remote controller” includes MA remote controller, Simple MA controller, and wireless remote controller. ✻ 2: Cables with a diameter of 0.75mm2 or smaller recommended for easier handling. ✻ 3: When connecting to Simple MA controller terminal, use a cable with a diameter within the range shown in the parenthesis. 7-3.Types of switch settings and setting methods Whether a particular system requires switch settings depends on its components. Refer to the section “7-4 Sample System Connection” before conducting electrical work. Keep the power turned off while setting the switches. If settings are changed while being powered, the changed settings will not register, and the unit may malfunction. Unit Symbol Outdoor unit Indoor unit Main/sub controllers ✻ Turn off the power to OC Outdoor unit IC Indoor and outdoor units ✻ 10HP has only the main controller (1) Address setting The need for address settings and the range of address setting depend on the configuration of the system. Refer to “Sample System Connection”. Unit or controller Indoor unit Main · Sub Symbol IC MA remote controller MA Outdoor unit OC Address setting range 01~50 (Note 1) Address setting method In case of 10HP system or 20 HP system with one refrigerant circuit, assign an odd number starting with "01". In case of 20HP system with two refrigerant circuits, assign a sequential odd number starting with "01" to the upper indoor controller, and assign "the address of the upper indoor controller + 1" to the lower indoor controller. (For the system with one refrigerant circuit, the lower circuit board is not used.) No address setting required. 51~100 (The main/sub switch must be configured if two remote controllers are connected to the system or if the indoor units are connected to different outdoor units.) Add 50 to the address assigned to the indoor unit connected the system with one outdoor unit. Factory setting Model 00 Main 00 (Note1) If a given address overlaps any of the addresses that are assigned to other outdoor units, use a different, unused address within the setting range. 21 (2) Power supply switch connector connection on the outdoor unit (Factory setting: The male power supply switch connector is connected to CN41.) Grouping system Connection to the system controller Power supply unit for transmission lines Grouping the indoor units connected to different outdoor units Leave the male connector on CN41 as it is. (Factory setting) Grouped indoor units connected to one outdoor unit Grouped indoor units connected to different outdoor units Power supply switch connector connection Not grouped Not connected Grouped With connection to indoor-outdoor transmission line Not required Grouped /Not grouped With connection to transmission line for centralized control Not required (Powered from the outdoor unit) Grouped /Not grouped Required Grouped /Not grouped Disconnect the male connector from the female power supply switch connector (CN41) and connect it to the female power supply switch connector (CN40) on only one of the outdoor units (OC). *Connect the S (shielded) terminal on the terminal block (TB7) on the outdoor unit whose male connector on CN41 was disconnected and connected to CN40 to the earth terminal ( ) on the control box. Leave the male connector on CN41 as it is. (Factory setting) (3) Choosing the temperature detection spot by indoor unit (Factory Setting: SWC “Standard”) When using the suction temperature sensor, set SWC to “Option.” (The discharge temperature sensor is supplied as standard specification.) (4) Setting the MA “Sub” controller When using two remote controllers or running two indoor units as a group, one of the controllers must be set to “Sub” controller. ✻ No more than two remote controllers can be connected to a group. (Factory setting: “Main”) Set the controller according to the following procedure. Refer also to the instructions manual supplied with the MA remote controller. Remove the cover on the remote controller Screwdriver Insert a flat-head screwdriver in the groove shown in the picture, and move the screwdriver in the direction shown in the arrow. ON Set Dip Switch No.1 on the remote controller to “OFF” (Main to Sub) 1 2 3 4 Dip switches Remote controller body (5) Connection of two refrigerant circuits When two refrigerant circuits are connected on site, make the switch settings on the controller circuit board following the instructions described in the installation manual for the indoor unit. 22 7-4.Sample System Connection (1) An example of a system to which an MA remote controller is connected 1 System connected to one outdoor unit Control Wiring Diagram L1 Leave the male connector on CN41 as it is. IC OC 51 ✻ One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP). 01 TB3 TB7 M1 M2 S M1 M2 TB5-1 A1 B1 S TB15 1 2 A B MA NO 02 TB5-2 A2 B2 S Maximum Allowable Length Notes 1. Leave the male connector on the female power supply switch connector (CN41) as it is. 2. Grounding to S terminal on the terminal block for transmission line for centralized control (TB7) is not required. 3. Although two indoor controllers (controller circuit boards) are equipped inside the indoor unit (20HP), the board on No.2 side (lower side) is not used. Do not connect wiring to the lower controller circuit board. 4. The outdoor unit cannot be connected to the units other than the PFD series indoor units. <a. Indoor/Outdoor transmission line> Maximum Length (1.25mm2 or more) L1 200m Wiring and Address Setting <a. Indoor/Outdoor transmission line> Connect M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and A1, B1 terminals of the indoor/outdoor terminal block (TB5) on the indoor unit (IC). (Non-polarized 2-core cable) *Only use shielded cables. [Shielded cable connection] Connect the earth terminal of the OC and S terminal of the IC terminal block (TB5). Steps <b. Switch setting> Address setting is required as follows. 1 Unit or controller Indoor unit Address setting range Address setting method Notes Zone number (SW14) setting is required. (Setting range: between 1 and 5) Main IC 01~50 Assign a sequential odd number starting with "01" to the upper indoor controller. Sub IC 01~50 Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1) 51~100 Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit. 2 Outdoor unit OC MA Main Controller remote controller Sub Controller MA Setting not required. 3 Factory setting 00 00 Main MA Sub Controller Settings to be made with the sub/main switch 23 (1) An example of a system to which an MA remote controller is connected 2 System connected to two outdoor units Control Wiring Diagram L1 Disconnect the male power supply connector from CN40 and connect it to CN41. IC OC 51 TB3 TB7 M1M2 S M1 M2 TB5-1 A1 B1 S TB15 1 2 Connection L31 ✻ One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP). 01 A B MA Leave the male connector on CN41 as it is. NO OC 52 02 TB5-2 A2B2 S TB3 TB7 M1 M2 S M1 M2 NO L2 Maximum Allowable Length Notes 1. Assign a sequential number to the outdoor unit. 2. Do not connect the terminal blocks (TB5) of the indoor units connected to different outdoor units. 3. Disconnect the male connector on the controller board from the female power supply switch connector (CN41), and connect it to the female power supply switch connector (CN40) on only one of the outdoor units. 4. Provide grounding to S terminal on the terminal block for transmission line for centralized control (TB7) on only one of the outdoor units. 5. When the power supply unit is connected to the transmission line for centralized control, leave the male connector on the female power supply switch connector (CN41) as it is at factory shipment. 6. The outdoor unit cannot be connected to the units other than the PFD series indoor units. <a. Indoor/Outdoor transmission line> Maximum Length (1.25mm2 or more) L1, L2 200m <b. Transmission line for centralized control> Maximum Length via outdoor unit (1.25mm2 or more) L1 + L31 + L2 500m Wiring and Address Setting Steps <a. Indoor/Outdoor transmission line> Connect M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and A1, B1 terminals of the indoor/outdoor terminal block (TB5) on the indoor unit (IC). (Non-polarized 2-core cable) *Only use shielded cables. [Shielded cable connection] Connect the earth terminal of the OC and S terminal of the IC terminal block (TB5). <b. Transmission line for centralized control> Only with connection to a manipulator for centralized control Daisy-chain terminals M1 and M2 on the terminal block for transmission line for centralized control (TB7) on each outdoor unit (OC). Disconnect the male connector on the controller board from the female power supply switch connector (CN41), and connect it to the female power supply switch connector (CN40) on only one of the outdoor units. *Only use shielded cables. [Shielded cable connection] To ground the shielded cable, daisy-chain the S-terminals on the terminal block (TB7) on each of the outdoor units. Connect the S (shielded) terminal on the terminal block (TB7) on the outdoor unit whose male connector on CN41 was disconnected and connected to CN40 to the earth terminal ( ) on the electric box. <c. Switch setting> Address setting is required as follows. Address Factory Unit or controller Address setting method Notes setting setting range 1 Indoor unit Main IC 01~50 Assign a sequential odd number starting with "01" to the upper indoor controller. Sub IC 01~50 Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1) 51~100 Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit. 2 Outdoor unit OC MA Main Controller remote controller Sub Controller MA Setting not required. 3 Zone number (SW14) setting is required. (Setting range: between 1 and 5) 00 00 Main MA Sub Controller Settings to be made with the sub/main switch 24 (1) An example of a system to which an MA remote controller is connected 3 System in which two MA remote controllers are connected to one indoor unit Control Wiring Diagram L1 Leave the male connector on CN41 as it is. IC OC 51 ✻ One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP). 01 TB3 TB7 M1 M2 S M1 M2 TB5-1 A1 B1 S TB15 1 2 m2 m1 A B A B MA(Main) MA(Sub) NO NO A1 B2 MA 02 TB5-2 A2 B2 S Maximum Allowable Length Notes 1. Leave the male connector on the female power supply switch connector (CN41) as it is. 2. Grounding to S terminal on the terminal block for transmission line for centralized control (TB7) is not required. 3. Although two indoor controllers (controller circuit boards) are equipped inside the indoor unit, the board on No.2 side (lower side) is not used. Do not connect wiring to the lower controller circuit board. 4. No more than two MA remote controllers (including both main and sub controllers) can be connected to a group of indoor units. If three or more MA remote controllers are connected, remove the wire for the MA remote controller from the terminal block (TB15). 5. The outdoor unit cannot be connected to the units other than the PFD series indoor units. <a. Indoor/Outdoor transmission line> Same as (1) 1. <b. MA remote controller wiring> Maximum overall length (0.3-1.25mm2 or more) m1 + m2 200m Wiring and Address Setting <a. Indoor/Outdoor transmission line> Same as (1) 1. <b. MA remote controller wiring> [When two remote controllers are connected to the system] When two remote controllers are connected to the system, connect terminals 1 and 2 of the terminal block (TB15) on the indoor unit (IC) to the terminal block on the MA remote controllers (option). *Set the Main/Sub switch on the connected MA remote controllers (option) to SUB. (See the installation manual for the MA remote controller for the setting method.) Steps <c. Switch setting> Address setting is required as follows. 1 Unit or controller Indoor unit Address setting range Address setting method Notes Zone number (SW14) setting is required. (Setting range: between 1 and 5) Main IC 01~50 Assign a sequential odd number starting with "01" to the upper indoor controller. Sub IC 01~50 Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1) 51~100 Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit. 2 Outdoor unit OC MA Main Controller remote controller Sub Controller MA Setting not required. 3 Factory setting 00 00 Main MA Sub Controller Settings to be made with the sub/main switch 25 (1) An example of a system to which an MA remote controller is connected 4 System in which two indoor units are grouped with the MA remote controller Control Wiring Diagram L1 L1 Leave the male connector on CN41 as it is. OC Leave the male connector on CN41 as it is. OC IC 51 53 01 TB3 TB7 M1M2 S M1M2 IC TB3 TB7 M1 M2 S M1M2 TB5-1 A1 B1 S ✻ One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP). 03 TB5-1 A1 B1 S TB15 1 2 TB15 1 2 m1 m2 A B MA(Main) A B MA(Sub) 02 04 TB5-2 A2 B2 S TB5-2 A2 B2 S m3 Maximum Allowable Length Notes 1. Leave the male connector on the female power supply switch connector (CN41) as it is. 2. Grounding to S terminal on the terminal block for transmission line for centralized control (TB7) is not required. 3. Although two indoor controllers (controller circuit boards) are equipped inside the indoor unit, the board on No.2 side (lower side) is not used. Do not connect wiring to the lower controller circuit board. 4. No more than two MA remote controllers (including both main and sub controllers) can be connected to a group of indoor units. If three or more MA remote controllers are connected, remove the wire for the MA remote controller from the terminal block (TB15). 5. The outdoor unit cannot be connected to the units other than the PFD series indoor units. <a. Indoor/Outdoor transmission line> Same as (1) 1. <b. MA remote controller wiring> Maximum overall length (0.3-1.25mm2 or more) m1 + m2 + m3 200m Wiring and Address Setting <a. Indoor/Outdoor transmission line> Same as (1) 1. <b. MA remote controller wiring> [Group operation of indoor units] To perform a group operation of indoor units (IC), daisy-chain terminals 1 and 2 on the terminal block (TB15) on all indoor units (IC). (Non-polarized 2core cable) *Set the Main/Sub switch on one of the MA remote controllers to SUB. Steps <c. Switch setting> Address setting is required as follows. 1 Unit or controller Indoor unit Address setting range Address setting method Notes Zone number (SW14) setting is required. (Setting range: between 1 and 5) Main IC 01~50 Assign a sequential odd number starting with "01" to the upper indoor controller. Sub IC 01~50 Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1) 51~100 Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit. 2 Outdoor unit OC MA Main Controller remote controller Sub Controller MA Setting not required. 3 Factory setting 00 00 Main MA Sub Controller Settings to be made with the sub/main switch 26 7-5.External input/output specifications (1) Input/output specifications Input Function Usage Signals Start/stop Turning ON/OFF the indoor unit · Pulse [Factory setting: Dip SW1-9 ON] (a-contact with voltage/without voltage) ✻1 <With voltage> Power Source: DC12~24V Electrical Current: Approximately 10mA (DC12V) <Standard Pulse> over 200ms over 200ms (Pulse powering time) (Pulse interval) · Level [Dip SW1-9 OFF] Dehumidi- Sending a command fication to perform signal dehumidification with priority Level Refer to the wiring diagram <Dehumidification command> shown on the next page. ✻1 Use minute-current contact (DC12V 1mA) Output Function Usage Signal No. 2 Operation Status ✻ Obtaining signals indicating Relay a-contact operation status of indoor units output in each refrigerant circuit. DC 30V or AC 100V/200V Obtaining signals indicating error status of indoor units in Standard Current : each refrigerant circuit. 1A Obtaining signals indicating Minimum Current : operation status of indoor units 1mA in each refrigerant circuit. No. 2 Error Status ✻ Obtaining signals indicating error status of indoor units in each refrigerant circuit. No.1 Operation Status No. 1 Error Status ✻ 20HP only 27 (2) Wiring External input/output board Input with voltage TB23 AC External power source SW12 Stop/Start A1 Short Circuit A2 Input without voltage CN53 1 TB21 BC Common SW11 Stop/Start Short Circuit Relay Contact Point Output B1 2 B2 3 COM Power Source for Display No.1 Operation Status L1 No.1 Error Status L2 ✻ No.2 Operation Status L3 ✻ No.2 Error Status XC 3 XC XD 4 L4 CN54 1 XB 2 5 XB XA 1 4 XA TB22 XD XE 5 XE 2 3 4 5 ✻ 20HP only Connection to terminal board Connection with connectors Maximum : 100 m <Input with Applied Voltage> <Input without voltage applied> External powe source DC12~24V Electrical current input (per contact) Approximately 10mA (DC12V) SW11 Remote start/stop ✻ Each pressing pf the SW (Pulse input) switches between ON and OFF. Remote start/stop switch Each pressing of the SW (Pulse input) switches between ON and OFF. Minute-current contact: DC12V 1mA SW12 <Relay contact output> Power supply for displays DC30V or less 1A AC220-240V 1A L1 No.1 Operation Status Indicator Lamp L2 No.1 Error Status Indicator Lamp L3 No.2 Operation Status Indicator Lamp L4 No.2 Error Status Indicator Lamp XA~XE Relay (Permissible Electrical Current: 10mA~1A) ● Setting on the Indoor Unit Confirm the following setting when using external input. 1 No.1, No.2 Controller board Dip SW 3-8: ON (Factory Setting: ON; External input will not be available when OFF.) 2 No.1, No.2 address board Dip SW 1-10: OFF (Factory Setting: OFF; External input will not be available when ON.) 3 Normal/Local switch inside the unit controller box is set to “Normal.” (Factory Setting: Normal; External input will not be available when it is set to “Local.”) <Dehumidification command> Indoor unit controller circuit board Adapter for remote display (PAC-SA88HA) Relay circuit Remote controller board CN52 Relay power supply 5 Green 1 Brown SW Z Z SW : Dehumidification command Z : Relay (Contact: Minimum applicable load DC12V 1mA or less) 28 (3) Wiring Method 1 Check the indoor unit setting (Refer to 7-5.(2) Wiring ) 2 When using the external output function, connect each signal line to External output Terminal (TB22) on the unit, depending on the usage. 3 When using external input function, peal the outer layer of the signal line off, and connect it to external input terminal (TB21 or TB23) on the unit, depending on the usage. Wiring On Site TB23 ✻1 AC A1 A2 ✻1 CN53 TB21 BC B1 B2 Fix the wire on the lowvoltage (below DC30V) clamp. Pull the wire through the hole for transmission line to outside the unit. ✻2 To CN51 of No.1 board Wiring inside the unit CN54 TB22 COM 1 To CN51 of No.2 board 2 3 4 5 Fix the wire on the highvoltage (AC220-240V) clamp. Pull the wire through the hole for transmission line to outside the unit. ✻3 ✻1 20HP indoor unit is shipped with B1 and B2 terminals of TB21 and A1 and A2 terminals of TB23 short-circuited respectively. When connecting wire to those terminals, do not eliminate this feature. If it is eliminated, the units in one of the 2 refrigerant circuits may not operate. ✻2 Do not bundle with high-voltage (AC220-240V) wire, since noise interference from such wire may cause the unit to malfunction. ✻3 Do not bundle with minute-voltage (DC30V or below) wire, since noise interference from such wire may cause the unit to malfunction. Caution 1) Wiring should be covered by insulation tube with supplementary insulation. 2) Use relays or switches with IEC or equivalent standard. 3) The electric strength between accessible parts and control circuit should have 2750V or more. 4) TB21 is a terminal specifically for No-voltage contact point input. Do not apply voltage to TB21, since it must result in malfunction of indoor unit controller board. 5) TB23 is specifically for contact point input with voltage. Check the polarity before connecting to avoid damage to the unit. 6) Keep the wires on the input side and on the output side away from each other when using AC220240V as a power source for displays. 7) Keep the length of the extension part of external signal line under 100m. 8) 20HP is shipped with B1 and B2 terminals of TB21 and A1 and A2 terminals of TB23 short-circuited respectively. Do not eliminate this feature. If it is eliminated, the units in one of the two refrigerant circuits may not operate. 29 8. Air Conditioning the Computer Room 8-1 Main Features of the Floor-Duct Air Conditioners This system is installed by building a floor over an existing floor and using the space between these two floors as an air-conditioning duct. This system has the following characteristics: 1 The temperature and humidity can efficiently and reliably be controlled, since the air-conditioned air is sent directly to the machine. 2 It provides a comfortable environment for the operator, since the air can be conditioned to best suit the needs of the operator and machines. 3 It is favorable in terms of appearance because the air-conditioning duct is out of sight. 4 The location of the duct is irrelevant when considering adding new machines or rearranging the existing machines, since the entire floor serves as the air duct. Ceiling Free-access top floor Computer Filter Caution (1) Unlike plenum ventilation and overhead-duct type conditioners, since the conditioned air is not mixed with the air in the room, the air that comes out of the unit has to meet the predetermined conditions (constant temperature/constant humidity) at the time the air exits the unit. Close attention must be paid to the auto-controlling system. (2) Dust in the duct space (between the free-access top floor and the existing floor) must be thoroughly removed before installing the unit. (3) Since the existing floor is cooled by the unit, it may produce dews on the ceiling of the room down below. 8-2 Features of air-conditioner for computer room Air-conditioner for computer room is designed to maintain a constant room temperature and humidity. For underfloor air supply systems, providing air that meets predetermined requirements is a must. The compressor installed in this unit runs year around. The capacity controlled compressor regulates the outlet air temperature (or inlet air temperature) depending on the load change. The humidifier (Configure to Order) installed in this unit humidifies a room to a target humidity, and regulates the humidity. With priority dehumidification control (a dehumidifier must be installed on site), a room is dehumidified to a target humidity. Since the reheat function is not equipped, the room temperature may drop below the predetermined temperature due to a load inside the room. Therefore, the absolute humidity drops whereas the relative humidity may not drop to a target humidity. 30 8-3 Step-by-Step Plan for the Implementation of the Air-Conditioning Purpose Making decisions on the computer system Basic Conditions Accommodates possible future expansion (ensuring the acquisition route) Operation schedule Back-up system (in case of breakdowns, power outage, water-supply cut offs etc.) Air conditioning methods (continuous, floor-duct type etc.) Securing Necessary Rooms Computer room, CVCF room, MT Disk Storage room Supplementary computer room, system surveillance room Programmer room, operator room Battery room, transformer room Decision to Install the Air-Conditioning System Setting the Conditions for the Room Temperature/humidity Condition Calculating the Load Selecting the AirConditioner Model Selecting the Controllers Total System Air-conditioning operation panel (secure individual operation circuit), Auto Controller (temperature and humidity indicator/recorder), management, safety, laws, maintenance, earthquake proof, anti-vibration (floor load, anti-vibration device), noise control, etc. 31 8-4 Conditions for the Installation of Computer-Room Air Conditioners (1) Outdoor Temperature and Humidity Generally the values set for general air conditioners are used, although the value higher than the maximum outdoor temperature and humidity may be set for devices like computer-room air conditioners that must keep the air temperature and humidity under predetermined levels. (2) Indoor Temperature and Humidity There is a wide range of conditions set by different computer manufacturers, and the conditions need to be set in consultation with the manufacturers. The most basic conditions include keeping dew condensation and static electricity from forming. It is also necessary to keep the room free of dust to ensure a smooth operation of the computer. (3) Matching the Volume of Air Flow It is possible to use the fan on the computer to cool the room. This controlling method requires a certain volume of cold air in proportion to the amount of heat produced by the device. The inlet panel is located at the bottom of the unit, and the exhaust pipe is located either on the ceiling, front and back, or on the side. Air intake Air conditioner Computer Fan Free-access floor Air discharge (4) Considering a Back-up Air Conditioning System When the system is not allowed to stop at all, a back-up system is necessary. There are several different options for a back-up as the following: 1 Installing two sets of air conditioning systems necessary for the computer. 2 Utilizing regular office air conditioners (for people) 3 Using one of the units as a back-up 1 is used infrequently due to high costs involved. 2 involves many technical problems such as the difference between preset conditions for computer rooms and office rooms. In general, 3 is a preferred method. If 3 is chosen, the unit method (package method) is more economical than the central method. 32 8-5 Setting the Air conditioners (1) Air-Conditioning Load 1 Once the floor plan is made and the conditions for the air-conditioning system are set, air conditioning capacity has to be determined by calculating the load. 2 Unlike the outdoor air, computer load remains constant throughout the year. However, it is possible that there are considerable fluctuations within a day. This is due to the fact that, depending on the time of the day, there are changes in the number of computers that are turned on and that the different computer systems are in operation. 3 If there is a plan to expand the current computer system in the future, it is important to include the load for the units to be added in the future when calculating the thermal load because it is practically impossible to keep the computers off for days on end during the installation of the new units. 4 The following items need to be checked before calculating the unit capacity: · Floor area of the computer room (m2) · Total quantity of heat generated by computers (2) Sample Selection of Air Conditioners (2-1) Conditions 20.9kW Computer-generated heat 5 Number of workers 20W/m2 Lighting Indoor ˚CDB/Indoor WBT : 24˚C/17˚C ˚CDB of the air going into the computer : 18˚C Temperature and humidity 60Hz Frequency (2-2) Building Conditions (W: 4.5m, H: 1.5m) ✕ 2 Windows Inside Measurement Surroundings Ceiling height 2.2m Upstairs room, downstairs room, heat and air conditioning 1 Coefficient of Overall Heat Transmission U (W/m2 ·K) Outer Walls Inner Walls Summer 3.6, Winter 3.8 2.05 Downward convection 3.36, upward convection 3.3 Ceiling Floor (free access) Downward convection 3.05, upward convection 4.56 Floor Downward convection 2.42, upward convection 3.3 Windows Summer 5.93, Winter 6.5 Window 2 Internal Load Number of People in the Room 5 Lighting 20W/m2 Calculator 20.9kW Draft 0.2 times/h 3 Volume of Outdoor Air Intake 25m3/h·person 33 (2-3) Calculating the Load and Selecting a Model Calculate the temperature difference by setting the outdoor temperature; then, calculate hourly loads. The chart shows the result of a calculation, supposing that the system reaches its highest load at 12 o'clock. Outdoor temperatures in this example Summer : 32˚CDB relative humidity 60% Winter : -2˚CDB relative humidity 42% 1 Load (in the summer with air-conditioning) < Sensible Heat > SH Computer 20.9 kW Lighting Number of people in the room Infiltration draft Outer wall (heat transmission) Windows (radiation) 1,800W 1.8 kW 5 persons ✕ 64 (U) 0.32 kW 3 (0.2 times/h) 39.6m ✕ 0.336 ✕ 8 0.11 kW ✕ 3.6 ✕ 8 0.25 kW ✕ 0.65 ✕ 188 1.91 kW 8.5m2 13.5m2 Windows (heat transmission) 13.5 ✕ 5.93 ✕ 8 0.64 kW Inner wall(heat transmission) 61.6 ✕ 2.05 ✕ 4 0.5 kW 125m3 ✕ 0.336 ✕ 8 0.34 kW Outside air Total 26.8 kW < Latent Heat > LH Infiltration draft Number of people in the room Outside air 39.6 ✕ 834 ✕ 0.0117 0.39 kW 5 persons ✕ 82 0.41 kW 125m3 ✕ 834 ✕ 0.0117 1.22 kW Total 2.0 kW Total load is 28.8kW 2 Necessary Air Circulation V= 26800 0.336 ✕ (24 -18) ÷ 60 = 221m3/min 3 Model Selection PUHY-P500YGM-A, PFD-P500VM-E type Indoor ˚CDB 24˚C / Indoor ˚CWB 17˚C outdoor ˚CDB 32˚C Capacity of the Moment 54.3kW SHF = 0.92 Capacity of Sensible Heat 54.3 ✕ 0.92 = 49.9/kW Standard Air-Flow Volume: 320m3/min can be accommodated with PUHY-P500YGM-A and PFD-P500VM-E. 34 8-6 Automatic Control of the Computer Room Example PFD-P500VM-E automatically controls the cooling temperature with a built-in controller. (suction temperature or discharge temperature control) This unit is designed for high sensible-heat specifications, and it does not include a humidifier or a dehumidifier. Install such components as necessary. < Outdoor Unit > TB3 ✻2 ✻1 Intake Thermistor RA < Indoor unit > Controller Terminal Bed for External Input/Output Discharge Thermistor Free-Access Floor SA Remote Controller ✻1 Bold lines in the diagram indicate refrigerant piping (gas/liquid). This system consists of single refrigerant circuit. ✻2 Indicates TB3-type transmission line used to communicate with the indoor unit. This system is made up of single circuit. 35 9. Maintenance/Inspection 9-1. Maintenance/Inspection Schedule Having the units inspected by a specialist on a regular basis, in addition to regular maintenance such as changing the filters, will allow the users to use them safely and in good condition for an extended period of time. The chart below indicates standard maintenance schedule. (1) Approximate Longevity of Various Parts The chart shows an approximate longevity of parts. It is an estimation of the time when old parts may need to be replaced or repairs need to be made. It does not mean that the parts must absolutely be replaced (except for the fan belt). Please note that the figures in the chart do not mean warranty periods. Fan Belt Check Replace every after 6 months 40000 hours 6 months 40000 hours 6 months 8000 hours Air Filter 3 months 5 years Drain Pan 6 months 8 years Yes Drain Hose 6 months 8 years Linear Expansion Valve 1 year 1 year Yes Yes Yes Unit Parts Fan Motor Indoor Bearing Heat Exchanger Float Switch Display Lamp Periodically check Yes Yes Yes 25000 hours 5 years 6 months 25000 hours 1year 8000 hours Add lubricant once a year Disposable parts Maintenance schedule changes depending on the local conditions Yes Yes Yes 4-way valve Linear Expansion Valve Heat Exchanger Pressure Switch 1 year 1 year 5 years 25000 hours Yes Yes Inverter Cooling Fan 1 year 40000 hours Yes Fan motor Remarks Yes 6 months 40000 hours 6 months 40000 hours 1 year 25000 hours 1 year 25000 hours Compressor Outdoor Daily check Yes Yes Yes (2) Notes ●The above chart shows a maintenance schedule for a unit that is used under the following conditions: A. Less than 6 times per hour of compressor stoppage B. The unit stays on 24 hours a day. ●Shortening the inspection cycle may need to be considered when the following conditions apply: ➀ When used in high temperature/high humidity area or when used in a place where the temperature and/or humidity fluctuate greatly ➁ When plugged into an unstable power source (sudden change in voltage, frequency, wave distortions) (Do not exceed the maximum capacity.) ➂ When the unit is installed in a place where it receives vibrations or major impacts. ➃ When used in a place with poor air quality (containing dust particles, salt, poisonous gas such as sulfuric acid gas and sulfuric hydrogen gas, oil mist). ●Even when the above maintenance schedule is followed, there could be unexpected problems that cannot be predicted. ●Holding of Parts We will hold parts for the units for at least 9 years after the termination of the production of the unit, following the standards set by the ministry of economics and industries. 36 Details of Maintenance/Inspection Unit Parts Inspection Cycle Check points Assessment Fan motor · Check for unusual noise · Measure the insulation resistance · Free of unusual noise · Insulation resistance over 1MΩ Replace when insulation resistance is under 1MΩ Bearing · Check for unusual noise · Free of unusual noise If the noise doesn't stop after lubrication, change the oil. Add lubricant once a year. · Check for excessive slack · Check for wear and tear · Check for unusual noise · Resistance (3-4kg/belt) · Adequate amount of slack=5mm · Belt length=no longer than 102% of the original length · Free of wear and tear · Free of unusual noise Adjust the belt Replace if the belt length exceeds 2% of the original length, worn, or used over 8000 hours · Check for clogging and tear · Clean the filter · Clean, free of damage Clean the filter Replace if extremely dirty or damaged · Check for clogging of the drainage system · Check for loosened bolts · Check for corrosion · Clean, free of clogging · Free of loose screws · No major disintegration Clean if dirty or clogged Tighten bolts Replace if extremely worn · Make sure the loop of the hose has water to prevent air from traveling through the hose (Fill the hose with water) · Check for clogging of the drainage system · Clean, free of clogging · Free of wear and tear Clean if dirty or clogged Replace if extremely worm · Perform an operation check using the operation data · Adequately controls the air temperature (Check temperature change on the centralized controller) Replace if malfunctioning · Check for clogging, dirt, and damage · Clean, free of clogging or damage Clean · Check the outer appearance · Make sure its free of foreign objects · Free of frayed or cut wires · Free of foreign objects Replace if damaged or extremely worn Remove foreign objects · Make sure the lamp comes on · Comes on when the output is on Replace if the light does not come on when the power is on · Check for unusual noise · Check insulation resistance · Check for loosened terminals · Free of unusual sound · Insulation resistance over 1MΩ · Free of loosened terminals Replace if insulation resistance goes below 1MΩ (under the condition that the refrigerant is not liquefied) Tighten loosened bolts Fan motor · Check for unusual noise · Measure insulation resistance · Free of unusual sound · Insulation resistance over 1MΩ Replace if insulation resistance goes below 1MΩ Linear expansion valve · Perform an operation check using the operation data · Adequately controls the air temperature (Check temperature change on the centralized controller) Replace if malfunctioning 4-way valve · Perform an operation check using the operation data · Adequately controls the air temperature Replace if malfunctioning · Check for clogging, dirt, and damage · Clean, free of clogging or damage Clean Pressure switch · Check for torn wire, fraying, and unplugged connectors · Check insulation resistance · No frayed or cut wires or unplugged connectors · Insulation resistance over 1MΩ Replace when cut or shorted, when the insulation resistance goes below 1MΩ, or if there is a history of abnormal operation Inverter cooling fan · Check for unusual sound · Measure insulation resistance · Look for abnormal history · Free of unusual sound · Insulation resistance over 1MΩ · No heatsink overheat protection (4230,4330) on the report Replace when producing unusual sounds, when insulation resistance goes under 1MΩ, or if there is a history of abnormal operation. Fan belt Air filter 6 months 3 months Indoor Drain pan Drain hose 6 months Linear expansion valve 1 year Heat exchanger Float switch Display lamp 6 months 1 year Compressor 6 months Outdoor What to do Heat exchanger 1 year 37 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Issued in Mar. 2006 MEE05K442 Printed in Japan New publication, effective Mar. 2006 Specifications subject to change without notice