EDAU RWEYQ-PY1. Water Cooled Inverter Series Heat Pump 50Hz Heat Recovery 50Hz

Transcription

1 RWEYQ-PY1 Water Cooled Inverter Series Heat Pump 50Hz Heat Recovery 50Hz

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3 Introduction ii Part 1 General Information Part 2 Outside unit... RWEYQ-P Part 3 Interlock operation Part 4 Appendix Table of contents i

4 Introduction 1. Introduction Preface Along higher quality building environment and more sophisticated building function, there is now a greater demand for system expansion for a flexible air-conditioning system capable of finer air-conditioning, thus increasing importance of individual air-conditioning systems. On the other hand, due to social significance of environmental and energy problems, elements such as energy-efficiency and low maintenance are still strongly desired. Daikin is the sole air conditioning company in the world that manufactures every component from refrigerant to complete air conditioning systems itself. Our commitment to offering the best for people as well as the environment inspires us to develop new systems that make the most effective use of energy resources and protect the ozone layer. Daikin, the first in the industry to develop the VRV system, has now enhanced the R-410A with the Inverter that features an upgraded capacity of up to class to further refine all the features of the current water cooled VRV. This publication contains a variety of information related to the design and installation of this new VRV System. We hope this information will serve to deepen your understanding of the system, and will help you to efficiently develop its highly evolved characteristics. Global Operations Division DAIKIN INDUSTRIES, LTD. ii Introduction

5 Publication history of VRV Engineering Data 2. Publication history of VRV Engineering Data Refrigerant Type Pub. : No. Outside units Notes R-410A R-22 Air Cooled Water Cooled Air Cooled INVERTER MA INVERTER P INVERTER M INVERTER P INVERTER M INVERTER MA ED39-428B EDAU Hz H/P EDAU /60Hz H/P RXYQ5MA~48MA 50Hz C/O RXQ5MA~48MA 50Hz H/P 50Hz C/O EDAU37-750A 50Hz H/R EDAU Hz H/R ED-442B EDAU-742 ED Hz H/P 50Hz H/R 50Hz H/P 50Hz H/R 50Hz H/P, H/R 60Hz H/P, H/R RXYMQ4, 5, 6P Standard Models RXYQ5P~54P RXQ5P~54P High Efficiency Types RXYQ16PH~50PH RXQ16PH~50PH REYQ8P~48P REYQ8P~48P RWEYQ10 M Y1 RWEYQ10 M Y1 RWEYQ-PY1 RWEYQ-PYL, PTL 50Hz H/P, H/R RWEYQ8-PY1 ED38-2C ED ED /60Hz H/P RXY5M~48M 50Hz C/O RX5M~48M 50/60Hz H/P 50Hz C/O 50/60Hz H/P 50Hz C/O RXYM4, 5, 6M RXM4, 5, 6M RXM8,10M RXY5MA~48MA RX5MA~48MA VRV II Heat Pump, Cooling Only New line up of 60Hz Heat Pump outdoor units to ED39-428A VRV III-S Heat Pump For Australia New line up of VRV III-S System Minor change of Indoor Units from M to MA Model change of Remote Controller as follows BRC1A61, 62 BRC1C62 BRC8A61 VRV III Heat Pump, Cooling Only For Australia New line up of FXZQ-M, FXDYQ- M indoor units Published in Oct. 05 May. 07 May. 07 VRV III Heat Recovery For Australia Correction of printing errors Dec. 07 VRV III Heat Recovery For Australia New line up of FXSYQ-M indoor units Mar. 10 FXDYQ80~145M FXDYQ80~ 145MA (Model change) VRV-W II Heat Pump, Heat Recovery Following change has been newly added to ED-442A Minor change of Indoor Units from M to MA. May. 06 Model change of Remote Controller as follows BRC1A61 62 BRC1C62 BRC8A61 VRV-W II Heat Pump, Heat Recovery New line up of FXDYQ Indoor Units Jan. 08 VRV-W III Heat Pump, Heat Recovery New line up of FXZQ-M indoor units Deletion of FXSQ-M indoor units New line up of centralized BS units Dec. 09 Addition of Wired remote controller BRC1E61 The layout has been totally changed. VRV-W III Heat Pump, Heat Recovery New line up of FXSYQ-M indoor units Deletion of FXSQ-M indoor units Jul. 10 New line up of centralized BS units VRV II Heat Pump, Cooling Only Following change has been newly added to ED38-2B FXD~32P (Additional) Model change of Remote Controller as follows Jun. 06 BRC1A61, 62 BRC1C62 BRC8A61 VAM150~00FA VAM150~00GJ (Model change) VRV II-S Heat Pump, Cooling Only Following change has been newly added to ED FXD~32P (Additional) Model change of Remote Controller as follows Nov. 06 BRC1A61, 62 BRC1C62 BRC8A61 RXM8, 10M (VRV II type; Additional) VRV II Heat Pump, Cooling Only Minor change of outdoor units from M to MA. Oct. 08 Addition of DCS3A61 For all types OH08-1 For indoor and outdoor units Option handbook Apr. 08 HRV(VAM) GJ ED /60Hz VAM150~00GJ HRV(VKM) GA(M) ED71-440A 50Hz This time we publish as shown by. H/P : Heat pump H/R : Heat recovery C/O : Cooling only VKM50~100GA(M) (R-410A) HRV New line-up from FA to GJ Series HRV With DX Coil (VKM-GA) With DX Coil and Humidities (VKM-GAM) Feb. 06 Feb. 07 Introduction iii

6 Step by step VRV system selection process (Reference) 3. Step by step VRV system selection process (Reference) (1) Obtain the maximum heat load for the area(s) to be conditioned. (2) Indoor unit specifications Outside unit specifications Capacity correction factor Air velocity and erature distributions P.12~ P.59~ (3) Selection of refrigerant pipes joints & headers P.66 (4) Selection of the control system (5) Electrical wiring Electric characteristics Field wiring P.19~ iv Introduction

7 Part 1 General information 1 1. Model Names of Indoor/Outdoor Units Indoor Units Outside Units Air Treatment Equipment External Appearance Indoor Units Outside Units Air Treatment Equipment Combination of Outside Units Nomenclature Capacity Range...9 General information 1

8 Model Names of Indoor/Outdoor Units 1. Model Names of Indoor/Outdoor Units 1.1 Indoor Units Indoor units Capacity range 2.2kW 2.8kW 3.6kW 4.5kW 5.6kW 7.1kW 9.0kW 11.2kW 14.0kW 16.0kW 16.2kW.0kW 22.4kW 28.0kW Power Capacity index supply Ceiling mounted cassette (Round flow) type FXFQ P 32P 40P 50P 63P 80P 100P 1P Ceiling mounted cassette (Compact multi flow) type FXZQ M M 32M 40M 50M Ceiling mounted cassette (Double flow) type FXCQ M M 32M 40M 50M 63M 80M 1M Ceiling mounted cassette corner type FXKQ MA 32MA 40MA 63MA VE Slim ceiling mounted duct type FXDQ-PBVE PB PB 32PB FXDQ-NBVE 40NB 50NB 63NB Ceiling mounted built-in type (Aus. exclusive FXSYQ M M 32M 40M 50M 63M 80M 100M 1M use) Ceiling concealed (Duct) type (Aus. exclusive FXDYQ 80MA 100MA 1MA 145MA 180M 0M 0M V1 use) Ceiling mounted duct type (Middle and high static pressure) FXMQ P P 32P 40P 50P 63P 80P 100P 1P 140P Ceiling mounted duct type FXMQ 0MA 0MA Ceiling suspended type FXHQ 32MA 63MA 100MA VE Wall mounted type FXAQ MA MA 32MA 40MA 50MA 63MA Floor standing type FXLQ MA MA 32MA 40MA 50MA 63MA Concealed floor standing type FXNQ MA MA 32MA 40MA 50MA 63MA Note: MA: RoHS Directive models; Specifications, dimensions and other functions are not changed compared with M type. Connection unit series indoor units Capacity range 2.2kW 2.8kW 3.6kW 4.5kW 5.6kW 8.0kW 11.2kW 14.0kW Power Capacity index supply Ceiling suspended cassette type FXUQ 71MA 100MA 1MA V1 Connection unit for FXUQ BEVQ 71MA 100MA 1MA VE Note: BEV unit is required for FXUQ only. MA: RoHS Directive models; Specifications, dimensions and other functions are not changed compared with M type. BS units Series Model name Power supply Heat recovery BSVQ 100P 160P 0P V1 Note: No compatibility between BSVQ-M. Centralized BS units Series Model name Power supply Heat recovery BSV 4Q100P 6Q100P V1 VE: 1 phase, 2-240/2V, 50/60Hz V1: 1 phase, 2-240V, 50Hz 2 General information

9 1.2 Outside Units Model Names of Indoor/Outdoor Units 1 Outside units Series Model name Power supply Heat pump 8P 10P 16P 18P P Heat recovery RWEYQ Y1 24P 26P 28P P Combination of outside units (Heat pump/heat recovery) Class 8 class (50Hz) 10 class (50Hz) 16 class (50Hz) 18 class (50Hz) Model name RWEYQ8P RWEYQ10P RWEYQ16P RWEYQ18P Outside unit 1 RWEYQ8P RWEYQ8P Outside unit 2 RWEYQ8P RWEYQ10P Class class (50Hz) 24 class (50Hz) 26 class (50Hz) 28 class (50Hz) class (50Hz) Model name RWEYQP RWEYQ24P RWEYQ26P RWEYQ28P RWEYQP Outside unit 1 RWEYQ10P RWEYQ8P RWEYQ8P RWEYQ8P RWEYQ10P Outside unit 2 RWEYQ10P RWEYQ8P RWEYQ8P RWEYQ10P RWEYQ10P Outside unit 3 RWEYQ8P RWEYQ10P RWEYQ10P RWEYQ10P VE : V1 : Y1 : 1 phase, 2-240/2V, 50/60Hz 1 phase, 2-240V, 50Hz 3 phase, V, 50Hz 1.3 Air Treatment Equipment HRV units (VKM series) Series Model name Power supply HRV units with DX coil 50GA 80GA 100GA VKM V1 HRV units with DX coil and humidifier 50GAM 80GAM 100GAM Note: For details, refer to Engineering Data ED71-440A. HRV units (VAM series) Series Model name Power supply HRV units VAM 150GJ 0GJ 0GJ 500GJ 650GJ 800GJ 1000GJ 1500GJ 00GJ VE Note: For details, refer to Engineering Data ED VE: 1 phase, 2-240/2V, 50/60Hz V1: 1 phase, 2-240V, 50Hz General information 3

10 External Appearance 2. External Appearance 2.1 Indoor Units Ceiling mounted cassette (Round flow) type FXFQPVE FXFQ32PVE FXFQ40PVE FXFQ50PVE FXFQ63PVE FXFQ80PVE FXFQ100PVE FXFQ1PVE Ceiling mounted cassette (Compact multi flow) type FXZQMVE FXZQMVE FXZQ32MVE FXZQ40MVE FXZQ50MVE Ceiling mounted duct type FXMQ0MAVE FXMQ0MAVE Ceiling suspended type FXHQ32MAVE FXHQ63MAVE FXHQ100MAVE Ceiling mounted cassette (Double flow) type FXCQMVE FXCQMVE FXCQ32MVE FXCQ40MVE FXCQ50MVE FXCQ63MVE FXCQ80MVE FXCQ1MVE Ceiling mounted cassette corner type FXKQMAVE FXKQ32MAVE FXKQ40MAVE FXKQ63MAVE Wall mounted type FXAQMAVE FXAQMAVE FXAQ32MAVE FXAQ40MAVE FXAQ50MAVE FXAQ63MAVE Floor standing type FXLQMAVE FXLQMAVE FXLQ32MAVE FXLQ40MAVE FXLQ50MAVE FXLQ63MAVE Slim ceiling mounted duct type FXDQPBVE FXDQPBVE FXDQ32PBVE FXDQ40NBVE FXDQ50NBVE FXDQ63NBVE Ceiling Mounted Built-In Type (Aus. exclusive use) FXSYQMVE FXSYQMVE FXSYQ32MVE FXSYQ40MVE FXSYQ50MVE FXSYQ63MVE FXSYQ80MVE FXSYQ100MVE FXSYQ1MVE Ceiling Concealed (Duct) Type (Aus. exclusive use) FXDYQ80MAV1 FXDYQ100MAV1 FXDYQ1MAV1 FXDYQ145MAV1 FXDYQ180MV1 FXDYQ0MV1 FXDYQ0MV1 Ceiling mounted duct type (Middle and high static pressure) FXMQPVE FXMQPVE FXMQ32PVE FXMQ40PVE FXMQ50PVE FXMQ63PVE FXMQ80PVE FXMQ100PVE FXMQ1PVE FXMQ140PVE Concealed floor standing type FXNQMAVE FXNQMAVE FXNQ32MAVE FXNQ40MAVE FXNQ50MAVE FXNQ63MAVE Ceiling suspended cassette type 50Hz FXUQ71MAVE + BEVQ71MAV1 FXUQ100MAVE + BEVQ100MAV1 FXUQ1MAVE + BEVQ1MAV1 BS units BSVQ100PV1 BSVQ160PV1 BSVQ0PV1 Connection unit Centralized BS units BSV4Q100PV1 BSV6Q100PV1 4 General information

11 2.2 Outside Units External Appearance 1 RWEYQ8, 10P 8, 10 class RWEYQ16, 18, P 16, 18, class RWEYQ24, 26, 28, P 24, 26, 28, class 2.3 Air Treatment Equipment HRV units (VKM series) VKM50GAV1 / VKM50GAMV1 VKM80GAV1 / VKM80GAMV1 VKM100GAV1 / VKM100GAMV1 with DX coil (GA) with DX coil and humidifier (GAM) HRV units (VAM series) VAM150GJVE VAM0GJVE VAM0GJVE VAM500GJVE VAM650GJVE VAM800GJVE VAM1000GJVE VAM1500GJVE VAM00GJVE General information 5

12 Combination of Outside Units 3. Combination of Outside Units 50Hz System Number of Module capacity units class 1 10 class 1 16 class 2 18 class 2 class 2 24 class 3 26 class 3 28 class 3 class 3 Outside unit multi connection piping kit (Option) Note : For multiple connection of 16~ class system, an optional Daikin outside unit multi connection piping kit is required. Heat pump: BHFP22MA56 Heat recovery: BHFP26MA56 Heat pump: BHFP22MA84 Heat recovery: BHFP26MA84 6 General information

13 4. Nomenclature Nomenclature 1 Indoor Unit FX F Q 40 P VE Power supply symbol VE : 1 phase, 2-240/2V, 50/60Hz V1 : 1 phase, 2-240V, 50Hz Indicates major design category M, P, NB, PB : Standard MA: Standard (RoHS applied models) Capacity indication Conversion to kw: : 2.2kW 40 : 4.5kW 71 : 8.0kW 1 : 14.0kW 180 :.0kW : 2.8kW 50 : 5.6kW 80 : 9.0kW 140 : 16.0kW 0 : 22.4kW 32 : 3.6kW 63 : 7.1kW 100 : 11.2kW 145 : 16.2kW 0 : 28.0kW Refrigerant : R-410A Type of unit F : Ceiling mounted cassette (Round flow) type Z : Ceiling mounted cassette (Compact multi flow) type C : Ceiling mounted cassette (Double flow) type K : Ceiling mounted cassette corner type D : Slim ceiling mounted duct type SY : Ceiling mounted built-in type (Australia exclusive use) DY: Ceiling concealed (Duct) type (Australia exclusive use) M : Ceiling mounted duct type H : Ceiling suspended type A : Wall mounted type L : Floor standing type N : Concealed floor standing type U : Ceiling suspended cassette type Indicates that this is VRV system indoor unit. BS unit (Only necessary for heat recovery system) BSV Q 100 P V1 Power supply symbol V1 : 1 phase, 2-240V, 50Hz Indicates major design category Capacity indication (Connectable total indoor unit capacity) (50Hz series) 100 : Total indoor unit capacity index or more but less than : Total indoor unit capacity index 100 or more but less than : Total indoor unit capacity index 160 or more but less than 0 Refrigerant : R-410A Indicates that this is a BS unit. Centralized BS units (Only necessary for heat recovery system) BSV 4 Q 100 P V1 Power supply symbol V1 : 1 phase, 2-240V, 50Hz Indicates major design category Capacity index of connectable indoor units per branch Refrigerant : R-410A Number of branches 4 : 4 branches 6 : 6 branches Indicates that this is a BS unit. General information 7

14 Nomenclature Outside unit RWEY Q P Y1 Power supply symbol Y1 : 3 phase, V, 50Hz Indicates major design category 8 : 8 class 10 : 10 class 16 : 16 class 18 : 18 class : class 24 : 24 class 26 : 26 class 28 : 28 class : class Refrigerant: R-410A Indicates that this is a function of air conditioner RWEY : Water cooled type Air Treatment Equipment HRV units (VKM series) V K M 50 GA M V1 Power supply symbol V1 : 1 phase, 2-240V, 50Hz Moisture M : With humidifier elements Nothing : Without humidifier elements Indicates major design category Air flow rate (H) 50 : 500m 3 /h, 80 : 750m 3 /h, 100 : 950m 3 /h Mounted type Outdoor air treatment type Ventilation HRV units (VAM series) V A M 500 GJ VE Power supply symbol VE: 1 phase, 2-240/2V, 50/60Hz Indicates major design category Air flow rate (H) (m 3 /h) Mounted type Air Ventilation 8 General information

15 5. Capacity Range Capacity Range 1 Outside units 50Hz Combination Single outside unit Double outside units Triple outside units Capacity range 8 class 10 class 16 class 18 class class 24 class 26 class 28 class class RWEYQ 8P 10P 16P 18P P 24P 26P 28P P Capacity index Total capacity index of indoor units to be connected Connectable capacity 100 ~ ~ 3 0 ~ 5 2 ~ ~ ~ ~ % of the rated capacity of the outside unit Max. number of connectable indoor units Max. number of connectable BS units ~ ~ 975 General information 9

16 Capacity Range 10 General information

17 Part 2 Outside unit RWEYQ-P 2 1. Specifications Hz Dimensions Service Space Piping Diagrams Wiring Diagrams Field Wiring Heat Pump / Y1 Model Heat Recovery / Y1 Model Electric Characteristics Safety Devices Setting Capacity Tables Cooling Capacity Heating Capacity Capacity Correction Factor Operation Limit Heat Pump Operation Heat Recovery Operation Sound Levels Centre of Gravity Example of Connection / Pipe Size Selection / Additional Refrigerant Charge Hz RWEYQ-PY1 Series Accessories Optional Accessories...68 Outside unit RWEYQ-P 11

18 Specifications 1. Specifications Hz Model name (Combination unit) RWEYQ8PY1 RWEYQ10PY1 RWEYQ16PY1 Y1 Model name (Independent unit) RWEYQ8PY1+RWEYQ8PY1 Power supply 3 phase, V, 50Hz 3 phase, V, 50Hz 3 phase, V, 50Hz kcal / h 19,500 23,0 39,000 1 Cooling capacity (19.5 CWB) Btu / h 77,500 92, ,000 kw Cooling capacity (19.0 CWB) kw kcal / h 21,500 27,100 43,000 3 Heating capacity Btu / h 85,0 107, ,000 kw Casing colour Ivory white (5Y7.5/1) Ivory white (5Y7.5/1) Ivory white (5Y7.5/1) Dimensions: (H W D) mm 1, , (1, ) 2 Heat exchanger Type Stainless steel plate type Stainless steel plate type Stainless steel plate type Comp. Refrigerant connecting pipes Type Hermetically sealed scroll type Hermetically sealed scroll type Hermetically sealed scroll type Piston displacement m³/h (14.61) 2 Number of revolutions r.p.m 6,900 6,900 (6,900) 2 Motor output Number of units kw (4.0) 2 Starting method Soft start Soft start Soft start Liquid pipe mm φ9.5 (Flare) φ9.5 (Flare) φ12.7 (Flare) 4 Suction gas pipe mm φ19.1 (Brazing) φ22.2 (Brazing) φ28.6 (Brazing) HP/LP gas pipe mm 5 φ15.9, 6 φ19.1 (Brazing) 5 φ19.1, 6 φ22.2 (Brazing) 5 φ22.2, 6 φ28.6 (Brazing) Water Water inlet PT1 1/4B internal thread PT1 1/4B internal thread PT1 1/4B internal thread connecting Water outlet PT1 1/4B internal thread PT1 1/4B internal thread PT1 1/4B internal thread pipes Drain outlet PS 1/2B internal thread PS 1/2B internal thread PS 1/2B internal thread Mass (Weight) kg Sound level db(a) Safety devices High pressure switch. Inverter overload protector. Fusible plugs. High pressure switch. Inverter overload protector. Fusible plugs. High pressure switch. Inverter overload protector. Fusible plugs. Capacity control % Refrigerant name R-410A R-410A R-410A Refrigerant Charge kg Control Electronic expansion valve Electronic expansion valve Electronic expansion valve Refrigerator oil Refer to the nameplate of compressor. Refer to the nameplate of compressor. Refer to the nameplate of compressor. Standard accessories Connection pipes. Clamps. Installation manual. Operation manual. Connection pipes. Clamps. Installation manual. Operation manual. Connection pipes. Clamps. Installation manual. Operation manual. Drawing No. C : 4D C : 4D C : 4D Notes: 1. 1 Indoor. : 27 CDB, 19.5 CWB / inlet water.: C / Equivalent piping length: 7.5m, level difference: 0m. 2 Indoor. : 27 CDB, 19.0 CWB / inlet water.: C / Equivalent piping length: 7.5m, level difference: 0m. 3 Indoor. : CDB / inlet water.: C / Equivalent piping length: 7.5m, level difference: 0m. 4 In the case of heat pump system, suction gas pipe is not used. 5 In the case of heat recovery system. 6 In the case of heat pump system. 7 Anechoic chamber conversion value, measured at a point 1 m in front of the unit at a height of 1.5m. During actual operation, these values are normally somewhat higher as a result of ambient conditions. 2. This unit cannot be installed in the outdoors. Install indoors (Machine room, etc.). 3. Hold ambient erature at 0~40 C and humidity at 80%RH or less Heat rejection from the casing : RWEYQ8PY1 / 0.64kW : RWEYQ10PY1 / 0.71kW Conversion formulae kcal/h=kw 860 Btu/h=kW 3412 cfm=m³/min.3 12 Outside unit RWEYQ-P

19 Specifications Model name (Combination unit) RWEYQ18PY1 RWEYQPY1 RWEYQ24PY1 Y1 Model name (Independent unit) RWEYQ10PY1+RWEYQ8PY1 RWEYQ10PY1+RWEYQ10PY1 RWEYQ8PY1+RWEYQ8PY1+RWEYQ8PY1 Power supply 3 phase, V, 50Hz 3 phase, V, 50Hz 3 phase, V, 50Hz kcal / h 42,700 46,400 58,600 1 Cooling capacity (19.5 CWB) Btu / h 170, , ,000 kw Cooling capacity (19.0 CWB) kw kcal / h 48,600 54,0 64,500 3 Heating capacity Btu / h 193, ,000 6,000 kw Casing colour Ivory white (5Y7.5/1) Ivory white (5Y7.5/1) Ivory white (5Y7.5/1) Dimensions: (H W D) mm (1, ) 2 (1, ) 2 (1, ) 3 Heat exchanger Type Stainless steel plate type Stainless steel plate type Stainless steel plate type Comp. Refrigerant connecting pipes Type Hermetically sealed scroll type Hermetically sealed scroll type Hermetically sealed scroll type Piston displacement m³/h (14.61) 2 (14.61) 2 (14.61) 3 Number of revolutions r.p.m (6,900) 2 (6,900) 2 (6,900) 3 Motor output Number of units kw (4.2) 2 (4.0) 3 Starting method Soft start Soft start Soft start Liquid pipe mm φ15.9 (Flare) φ15.9 (Flare) φ15.9 (Flare) 4 Suction gas pipe mm φ28.6 (Brazing) φ28.6 (Brazing) φ34.9 (Brazing) HP/LP gas pipe mm 5 φ22.2, 6 φ28.6 (Brazing) 5 φ22.2, 6 φ28.6 (Brazing) 5 φ28.6, 6 φ34.9 (Brazing) Water Water inlet PT1 1/4B internal thread PT1 1/4B internal thread PT1 1/4B internal thread connecting Water outlet PT1 1/4B internal thread PT1 1/4B internal thread PT1 1/4B internal thread pipes Drain outlet PS 1/2B internal thread PS 1/2B internal thread PS 1/2B internal thread Mass (Weight) kg Sound level db(a) Safety devices High pressure switch. Inverter overload protector. Fusible plugs. High pressure switch. Inverter overload protector. Fusible plugs. High pressure switch. Inverter overload protector. Fusible plugs. Capacity control % Refrigerant name R-410A R-410A R-410A Refrigerant Charge kg Control Electronic expansion valve Electronic expansion valve Electronic expansion valve Refrigerator oil Refer to the nameplate of compressor. Refer to the nameplate of compressor. Refer to the nameplate of compressor. Standard accessories Connection pipes. Clamps. Installation manual. Operation manual. Connection pipes. Clamps. Installation manual. Operation manual. Connection pipes. Clamps. Installation manual. Operation manual. Drawing No. C : 4D C : 4D C : 4D Notes: 1. 1 Indoor. : 27 CDB, 19.5 CWB / inlet water.: C / Equivalent piping length: 7.5m, level difference: 0m. 2 Indoor. : 27 CDB, 19.0 CWB / inlet water.: C / Equivalent piping length: 7.5m, level difference: 0m. 3 Indoor. : CDB / inlet water.: C / Equivalent piping length: 7.5m, level difference: 0m. 4 In the case of heat pump system, suction gas pipe is not used. 5 In the case of heat recovery system. 6 In the case of heat pump system. 7 Anechoic chamber conversion value, measured at a point 1 m in front of the unit at a height of 1.5m. During actual operation, these values are normally somewhat higher as a result of ambient conditions. 2. This unit cannot be installed in the outdoors. Install indoors (Machine room, etc.). 3. Hold ambient erature at 0~40 C and humidity at 80%RH or less Heat rejection from the casing : RWEYQ8PY1 / 0.64kW : RWEYQ10PY1 / 0.71kW Conversion formulae kcal/h=kw 860 Btu/h=kW 3412 cfm=m³/min.3 Outside unit RWEYQ-P 13

20 Specifications Model name (Combination unit) RWEYQ26PY1 RWEYQ28PY1 RWEYQPY1 Y1 Model name (Independent unit) RWEYQ10PY1+RWEYQ8PY1+RWEYQ8PY1 RWEYQ10PY1+RWEYQ10PY1+RWEYQ8PY1 RWEYQ10PY1+RWEYQ10PY1+RWEYQ10PY1 Power supply 3 phase, V, 50Hz 3 phase, V, 50Hz 3 phase, V, 50Hz kcal / h 62,0 66,000 69,700 1 Cooling capacity (19.5 CWB) Btu / h 247, , ,000 kw Cooling capacity (19.0 CWB) kw kcal / h 70,100 75,700 81,0 3 Heating capacity Btu / h 278,000 0, ,000 kw Casing colour Ivory white (5Y7.5/1) Ivory white (5Y7.5/1) Ivory white (5Y7.5/1) Dimensions: (H W D) mm (1, ) 3 (1, ) 3 (1, ) 3 Heat exchanger Type Stainless steel plate type Stainless steel plate type Stainless steel plate type Comp. Refrigerant connecting pipes Type Hermetically sealed scroll type Hermetically sealed scroll type Hermetically sealed scroll type Piston displacement m³/h (14.61) 3 (14.61) 3 (14.61) 3 Number of revolutions r.p.m (6,900) 3 (6,900) 3 (6,900) 3 Motor output Number of units kw (4.2) 3 Starting method Soft start Soft start Soft start Liquid pipe mm φ19.1 (Flare) φ19.1 (Flare) φ19.1 (Flare) 4 Suction gas pipe mm φ34.9 (Brazing) φ34.9 (Brazing) φ34.9 (Brazing) HP/LP gas pipe mm 5 φ28.6, 6 φ34.9 (Brazing) 5 φ28.6, 6 φ34.9 (Brazing) 5 φ28.6, 6 φ34.9 (Brazing) Water Water inlet PT1 1/4B internal thread PT1 1/4B internal thread PT1 1/4B internal thread connecting Water outlet PT1 1/4B internal thread PT1 1/4B internal thread PT1 1/4B internal thread pipes Drain outlet PS 1/2B internal thread PS 1/2B internal thread PS 1/2B internal thread Mass (weight) kg Sound level db(a) Safety devices High pressure switch. Inverter overload protector. Fusible plugs. High pressure switch. Inverter overload protector. Fusible plugs. High pressure switch. Inverter overload protector. Fusible plugs. Capacity control % Refrigerant name R-410A R-410A R-410A Refrigerant Charge kg Control Electronic expansion valve Electronic expansion valve Electronic expansion valve Refrigerator oil Refer to the nameplate of compressor. Refer to the nameplate of compressor. Refer to the nameplate of compressor. Standard accessories Connection pipes. Clamps. Installation manual. Operation manual. Connection pipes. Clamps. Installation manual. Operation manual. Connection pipes. Clamps. Installation manual. Operation manual. Drawing No. C : 4D C : 4D C : 4D Notes: 1. 1 Indoor. : 27 CDB, 19.5 CWB / inlet water.: C / Equivalent piping length: 7.5m, level difference: 0m. 2 Indoor. : 27 CDB, 19.0 CWB / inlet water.: C / Equivalent piping length: 7.5m, level difference: 0m. 3 Indoor. : CDB / inlet water.: C / Equivalent piping length: 7.5m, level difference: 0m. 4 In the case of heat pump system, suction gas pipe is not used. 5 In the case of heat recovery system. 6 In the case of heat pump system. 7 Anechoic chamber conversion value, measured at a point 1 m in front of the unit at a height of 1.5m. During actual operation, these values are normally somewhat higher as a result of ambient conditions. 2. This unit cannot be installed in the outdoors. Install indoors (Machine room, etc.). 3. Hold ambient erature at 0~40 C and humidity at 80%RH or less Heat rejection from the casing : RWEYQ8PY1 / 0.64kW : RWEYQ10PY1 / 0.71kW Conversion formulae kcal/h=kw 860 Btu/h=kW 3412 cfm=m³/min.3 14 Outside unit RWEYQ-P

21 Dimensions 2. Dimensions RWEYQ8PY1 / RWEYQ10PY1 2 Unit (mm) C: 3D Outside unit RWEYQ-P 15

22 Service Space 3. Service Space RWEYQ8PY1 / RWEYQ10PY1 / RWEYQ16PY1 / RWEYQ18PY1 / RWEYQPY1 / RWEYQ24PY1 / RWEYQ26PY1 / RWEYQ28PY1 / RWEYQPY1 Unit (mm) 3D048341D 16 Outside unit RWEYQ-P

23 Piping Diagrams 4. Piping Diagrams RWEYQ8PY1 / RWEYQ10PY1 2 4D048290C Outside unit RWEYQ-P 17

24 Wiring Diagrams 5. Wiring Diagrams RWEYQ8PY1 / RWEYQ10PY1 NOTES) 1. THIS WIRING DIAGRAM IS APPLIED ONLY TO THE OUTDOOR UNIT. 2. :FIELD WIRING. 3. :TERMINAL STRIP :CONNECTOR :TERMINAL :PROTECTIVE EARTH (SCREW) 4. WHEN USING THE OPTION ADAPTOR, REFER TO THE INSTALLATION MANUAL. 5. REFER TO THE INSTALLATION MANUAL, FOR CONNECTION WIRING TO INDOOR-OUTDOOR TRANSMISSION F1 F2, OUTDOOR-OUTDOOR TRANSMISSION F1 F2, OUTDOOR-MULTI TRANSMISSION Q1 Q2. 6. REFER TO SERVICE PRECAUTION LABEL (ON EL. COMPO. BOX COVER), HOW TO USE BS1~BS5 AND DS1 SWITCH. 7. WHEN OPERATING, DON T SHORT CIRCUIT FOR PROTECTION DEVICE. (S1PH) 8. BE SURE TO CONNECT THE INTERLOCK CIRCUIT (AN AUXILIARY NORMALLY OPEN CONTACT OF THE ELECTROMAGNETIC SWITCH FOR THE HEAT SOURCE WATER PUMP) TO TERMINALS (3) AND (4) OF THE TERMINAL BLOCK (X3M). (MAKE SURE THAT THE AUXILIARY NORMALLY OPEN CONTACT CAN SWITCH A MINIMUM LOAD OF 1 MA AT 15 VDC.) 9. INSTALL A HEAT SOURCE WATER PUMP OPERATION CIRCUIT BETWEEN THE TERMINAL (1)-(2) OF TERMINAL STRIP (X2M), WHEN INTERLOCKING A HEAT SOURCE WATER PUMP AND SYSTEM OPERATION. (OPERATION POWER WILL OUTPUT FROM THE HEAT SOURCE WATER PUMP WHEN THE OPERATION DISPLAY APPEARS ON THE INDOOR REMOTE CONTROLLER.) 10. COOL/HEAT SELECTOR CANNOT BE CONNECTED WHEN OPERATING HEAT RECOVERY SYSTEM. 11. COLORS BLK:BLACK RED:RED BLU:BLUE WHT:WHITE PNK:PINK GRY:GRAY ORG:ORANGE. C : 3D061377B 18 Outside unit RWEYQ-P

25 Field Wiring 6. Field Wiring 6.1 Heat Pump / Y1 Model RWEYQ8PY1 / RWEYQ10PY1 / RWEYQ16PY1 / RWEYQ18PY1 / RWEYQPY1 / RWEYQ24PY1 / RWEYQ26PY1 / RWEYQ28PY1 / RWEYQPY1 2 3D048824D Outside unit RWEYQ-P 19

26 Field Wiring 6.2 Heat Recovery / Y1 Model RWEYQ8PY1 / RWEYQ10PY1 / RWEYQ16PY1 / RWEYQ18PY1 / RWEYQPY1 / RWEYQ24PY1 / RWEYQ26PY1 / RWEYQ28PY1 / RWEYQPY1 3D048823D Outside unit RWEYQ-P

27 Electric Characteristics 7. Electric Characteristics RWEYQ8PY1 / RWEYQ10PY1 / RWEYQ16PY1 / RWEYQ18PY1 / RWEYQPY1 / RWEYQ24PY1 / RWEYQ26PY1 / RWEYQ28PY1 / RWEYQPY1 2 3D048287B Outside unit RWEYQ-P 21

28 Safety Devices Setting 8. Safety Devices Setting Item Name Symbol Model RWEYQ8PY1 / RWEYQ10PY1 Type JT1G-VDKYR@T Compressor Inverter OC protection M1C device 13.5A Electronic expansion valve (Main) Y1E Fully closed: 0pls Fully open: 00pls Electronic expansion valve (Subcool) Y3E Fully closed: 0pls Fully open: 00pls Pressure protection Others High pressure +0 For M1C HPS OFF: 4.0 MPa switch 0.12 ON: 3.0±0.15MPa Fusible plug Open: 70~75 C For main PC F1U 0V AC 10A Class B Fuse board F2U 0V AC 10A Class B For noise filter PC board F1U 0V AC 5A Class B 22 Outside unit RWEYQ-P

29 Capacity Tables 9. Capacity Tables 9.1 Cooling Capacity 2 RWEYQ8PY1 Combination Inlet water Water volume TC Cooling capacity Indoor air. CWB PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C TC : Total capacity ; kw Water flow head loss Water volume L/min Head loss kpa mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 23

30 Capacity Tables Cooling capacity Indoor air. CWB Combination Inlet water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C TC : Total capacity ; kw 24 Outside unit RWEYQ-P

31 Capacity Tables RWEYQ10PY1 Combination 1 Inlet water Water volume TC Cooling capacity Indoor air. CWB PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C TC : Total capacity ; kw Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P

32 Capacity Tables Cooling capacity Indoor air. CWB Combination Inlet water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C TC : Total capacity ; kw 26 Outside unit RWEYQ-P

33 Capacity Tables RWEYQ16PY1 Combination 1 Inlet water Water volume TC Cooling capacity Indoor air. CWB PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 27

34 Capacity Tables Cooling capacity Indoor air. CWB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 28 Outside unit RWEYQ-P

35 Capacity Tables RWEYQ18PY1 Combination 1 Inlet water Water volume TC Cooling capacity Indoor air. CWB PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 29

36 Capacity Tables Cooling capacity Indoor air. CWB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw Outside unit RWEYQ-P

37 Capacity Tables RWEYQPY1 Combination 1 Inlet water Water volume TC Cooling capacity Indoor air. CWB PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 31

38 Capacity Tables Cooling capacity Indoor air. CWB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 32 Outside unit RWEYQ-P

39 Capacity Tables RWEYQ24PY1 Combination Inlet water Water volume TC Cooling capacity Indoor air. CWB PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C TC : Total capacity ; kw Water volume: per one unit 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 33

40 Capacity Tables Cooling capacity Indoor air. CWB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 34 Outside unit RWEYQ-P

41 Capacity Tables RWEYQ26PY1 Combination 1 Inlet water Water volume TC Cooling capacity Indoor air. CWB PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P

42 Capacity Tables Cooling capacity Indoor air. CWB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 36 Outside unit RWEYQ-P

43 Capacity Tables RWEYQ28PY1 Combination Inlet water Water volume TC Cooling capacity Indoor air. CWB PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C TC : Total capacity ; kw Water volume: per one unit 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 37

44 Capacity Tables Cooling capacity Indoor air. CWB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 38 Outside unit RWEYQ-P

45 Capacity Tables RWEYQPY1 Combination 1 Inlet water Water volume TC Cooling capacity Indoor air. CWB PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 39

46 Capacity Tables Cooling capacity Indoor air. CWB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 40 Outside unit RWEYQ-P

47 Capacity Tables 9.2 Heating Capacity RWEYQ8PY1 Combination 1 Inlet water Water volume TC Heating capacity Indoor air. CDB PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water flow head loss Water volume L/min Head loss kpa mh 2 O *This value shows the amount of head loss per one unit. TC : Total capacity ; kw 2 Outside unit RWEYQ-P 41

48 Capacity Tables Heating capacity Indoor air. CDB Combination Inlet water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C TC : Total capacity ; kw 42 Outside unit RWEYQ-P

49 Capacity Tables RWEYQ10PY1 Combination 1 Inlet water Water volume TC Heating capacity Indoor air. CDB PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 43

50 Capacity Tables Heating capacity Indoor air. CDB Combination Inlet water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C TC : Total capacity ; kw 44 Outside unit RWEYQ-P

51 Capacity Tables RWEYQ16PY1 Combination 1 Inlet water Water volume TC Heating capacity Indoor air. CDB PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 45

52 Capacity Tables Heating capacity Indoor air. CDB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 46 Outside unit RWEYQ-P

53 Capacity Tables RWEYQ18PY1 Combination 1 Inlet water Water volume TC Heating capacity Indoor air. CDB PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 47

54 Capacity Tables Heating capacity Indoor air. CDB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 48 Outside unit RWEYQ-P

55 Capacity Tables RWEYQPY1 Combination 1 Inlet water Water volume TC Heating capacity Indoor air. CDB PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 49

56 Capacity Tables Heating capacity Indoor air. CDB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 50 Outside unit RWEYQ-P

57 Capacity Tables RWEYQ24PY1 Combination 1 Inlet water Water volume TC Heating capacity Indoor air. CDB PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 51

58 Capacity Tables Heating capacity Indoor air. CDB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 52 Outside unit RWEYQ-P

59 Capacity Tables RWEYQ26PY1 Combination 1 Inlet water Water volume TC Heating capacity Indoor air. CDB PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 53

60 Capacity Tables Heating capacity Indoor air. CDB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 54 Outside unit RWEYQ-P

61 Capacity Tables RWEYQ28PY1 Combination 1 Inlet water Water volume TC Heating capacity Indoor air. CDB PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 55

62 Capacity Tables Heating capacity Indoor air. CDB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 56 Outside unit RWEYQ-P

63 Capacity Tables RWEYQPY1 Combination 1 Inlet water Water volume TC Heating capacity Indoor air. CDB PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 2 Water flow head loss Water volume L/min kpa Head loss mh 2 O *This value shows the amount of head loss per one unit. Outside unit RWEYQ-P 57

64 Capacity Tables Heating capacity Indoor air. CDB Inlet Combination water Water volume TC PI water TC PI water TC PI water TC PI water TC PI water TC PI water % C L/min kw kw C kw kw C kw kw C kw kw C kw kw C kw kw C Water volume: per one unit TC : Total capacity ; kw 58 Outside unit RWEYQ-P

65 Capacity Tables 9.3 Capacity Correction Factor RWEYQ8PY1 2 3D Outside unit RWEYQ-P 59

66 Capacity Tables RWEYQ10PY1 / RWEYQPY1 C: 3D048283C 60 Outside unit RWEYQ-P

67 Capacity Tables RWEYQ16PY1 / RWEYQ18PY1 / RWEYQ24PY1 / RWEYQ26PY1 / RWEYQ28PY1 / RWEYQPY1 2 C: 3D048284C Outside unit RWEYQ-P 61

68 Operation Limit 10. Operation Limit 10.1 Heat Pump Operation RWEYQ8PY1 / RWEYQ10PY1 / RWEYQ16PY1 / RWEYQ18PY1 / RWEYQPY1 / RWEYQ24PY1 / RWEYQ26PY1 / RWEYQ28PY1 / RWEYQPY1 3D046586F 62 Outside unit RWEYQ-P

69 Operation Limit 10.2 Heat Recovery Operation RWEYQ8PY1 / RWEYQ10PY1 / RWEYQ16PY1 / RWEYQ18PY1 / RWEYQPY1 / RWEYQ24PY1 / RWEYQ26PY1 / RWEYQ28PY1 / RWEYQPY1 2 3D049377B Outside unit RWEYQ-P 63

70 Sound Levels 11.Sound Levels Overall Location of microphone Front Note: 1. The operating sound is measured in anechoic chamber. If it is measured under the actual installation conditions, it is normally over the set value due to environmental noise and sound reflection. db(a) Model Y1 : V, 50Hz RWEYQ8PY1 50 RWEYQ10PY1 51 RWEYQ16PY1 53 RWEYQ18PY1 54 RWEYQPY1 54 RWEYQ24PY1 55 RWEYQ26PY1 55 RWEYQ28PY1 55 RWEYQPY1 56 Octave band level RWEYQ8PY1 RWEYQ10PY1 4D D048340C 64 Outside unit RWEYQ-P

71 Centre of Gravity 12. Centre of Gravity RWEYQ8PY1 / RWEYQ10PY1 2 Unit (mm) 4D048289D Outside unit RWEYQ-P 65

72 Example of Connection / Pipe Size Selection / Additional Refrigerant Charge 13.Example of Connection / Pipe Size Selection / Additional Refrigerant Charge Hz RWEYQ-PY1 Series 9-5 Example of connection Below table is mentioned about the case of heat recovery system (3-piping: suction gas, HP/LP gas and liquid pipes). In case of heat pump system (2-piping: gas and liquid pipes), select the pipe size from suction gas pipe for gas pipes and from liquid gas pipe for liquid pipes. And BS unit is not required. Example of connection (Connection of 8 indoor units Heat pump system) Outside unit side (3-piping) (2-piping) HP/LP gas piping BS Gas piping Suction gas piping Liquid piping unit Liquid piping Indoor unit side Single outside unit system Piping between outside unit and BS unit HP/LP gas piping (Thick line): 3-piping Suction gas piping Liquid piping Piping between BS unit and indoor unit, Gas piping (Thin line): 2-piping Liquid piping [ ] In case of multi outside unit system, re-read the [outside unit] as [the first outside branch seen from the indoor unit side]. Multi outside unit system Maximum allowable length Allowable height length Between outside ( ) and indoor units Between outside branch and outside unit (In case of multi system) Between outside and indoor units Between indoor and indoor units Between outside and outside units Actual pipe length Equivalent length Total extension length Actual pipe length Difference in height Difference in height Difference in height Allowable length after the branch Actual pipe length Refrigerant branch kit selection Refrigerant branch kits can only be used with R410A. Example of downstream indoor units Pipe size selection Caution The thickness of the pipes in the table shows the requirements of Japanese High Pressure Gas Control low. (As of Jan. 03) The thickness and material shall be selected in accordance with local code. For a multi outside unit system, make the settings in accordance with the following figure. Piping between outside unit ( ) and refrigerant branch kit (part A) Piping between outside branches (part B) Piping between outside branch and outside unit (part C) How to calculate the additional refrigerant to be charged Additional refrigerant to be charged R (kg) (R should be rounded off in units of 0.1kg.) Example 1 Branch with REFNET joint Branch with REFNET joint and REFNET header Branch with REFNET header Example 2 Example 3 REFNET joint (A-G) A B C D E d e a b c n p B1 B2 B3 B4 m H2 Outside unit H1 BS units Indoor units Heat recovery system Cooling only ( B1 - B4 ) ( 1-8 ) ( 1-6 ) ( 7 8 ) REFNET header Outside unit H1 BS units ( B1 - B5 ) REFNET joint (A B) m B1 B2 B3 B4 k l Indoor units Heat recovery system ( 1-8 ) ( 1-4, 7 8 ) B5 n p H2 Cooling only ( 5 6 ) BS units ( B1 - B6 ) REFNET header f h j B1 B2 B3 B4 B5 B6 n o m c e g i k H Outside unit H1 Indoor units Heat recovery system Cooling only ( 1-8 ) ( 1-6 ) ( 7 8 ) Example 4 A B C D E F G Example 5 Example 6 REFNET joint (A-G) a m REFNET header a b c d e REFNET header BS units B5 n p i k l ( B1 - B5 ) B1 B2 B3 B4 m Indoor units b d f B1 B2 B3 B4 k l B1 B2 B3 B4 B5 B6 First outside H2 ( 1-8 ) c e g m n H2 branch H2 Heat recovery system REFNET joint (A B) Outside unit ( 1-4, 7 8 ) H1 H1 Outside Outside unit H3 Cooling only unit H1 BS units Indoor units Heat recovery Cooling only H3 ( 5 6 ) H3 ( B1 - B4 ) ( 1-8 ) system ( 1-6 ) ( 7 8 ) Pipe length between outside ( ) and indoor units 1m (Example 1,4) unit 8 : a + b + c + d + e + s 1m (Example 2,5) unit 6 : a + b + l 1m, 8 : a + m + n + p 1m (Example 3,6) unit 8 : a + o 1m Equivalent pipe length between outside ( ) and indoor units 140m (Note 1) (assume equivalent pipe length of REFNET joint to be 0.5m, that of REFNET header to be 1m, BSVP100,160 is 4 m and BSVP0 is 6m.) Total piping length from outside unit ( ) to all indoor units 0m Piping length from outside branch to outside unit 10m Equivalent length: max 13m r s Difference in height between outside and indoor units (H1) 50m (Max 40m if the outside unit is below) Difference in height between indoor units (H2) 15m Difference in height between outside unit (main) and outside unit (sub) (H3) 2m Pipe length from first refrigerant branch kit (either REFNET joint or REFNET header ) to indoor unit 40m (Note 2) r 10m (Equivalent length 13m) u+s 10m (Equivalent length 13m) u+t 10m (Equivalent length 13m) (Example 1,4) unit 8 : b + c + d + e + s 40m (Example 2,5) unit 6 : b + l 40m, 8 :m + n + p 40m (Example 3,6) unit 8 : o 40m How to select REFNET joint: How to select REFNET header When using REFNET joints at the first branch counted from the outside unit side. Select suitable one from the table below according to the total capacity of indoor units to be connected to the downstream of REFNET header. Choose from the following table in accordance with the capacity of the outside unit. Be careful that 0 type cannot be connected to the downstream of REFNET header. (Example 1,2,4,5 : REFNET joint A ) Refrigerant branch kit name Refrigerant branch kit name Indoor capacity index Outside unit capacity type In case of 3-tube piping In case of 2-tube piping Heat recovery system Heat pump system RWEYQ8, 10 type KHRPA33T KHRP26A33T < 0 KHRPM33H KHRP26M22H, KHRP26M33H RWEYQ16- type KHRPA72T + KHRPM72TP KHRP26A72T 0 x< 290 KHRP26M33H RWEYQ24- type KHRPA73T + KHRPM73TP KHRP26A73T + KHRP26M73TP 290 x< 640 KHRPM72H+KHRPM72HP KHRP26M72H For REFNET joints other than the first branch, select the proper branch kit model based on the total capacity index. 640 KHRPM73H+KHRPM73HP KHRP26M73H+KHRP26M73HP Indoor capacity index Refrigerant branch kit name How to select an outside branch kit (Needed when the outside unit type is RWEYQ or more.) In case of 3-tube piping In case of 2-tube piping Select from the table below according to the number of outside units. < 0 0 x< x< KHRPA22T KHRPA33T KHRPA72T+KHRPM72TP KHRPA73T+KHRPM73TP KHRP26A22T KHRP26A33T KHRP26A72T KHRP26A73T+KHRP26M73TP Number of units of outside unit Heat recovery system 2 unit 3 unit BHFP26MA56 BHFP26MA84 Outside unit Heat pump system BHFP22MA56 BHFP22MA84 BS units ( B1 - B6 ) Indoor units ( 1-8 ) Heat recovery system ( 1-6 ) Cooling only ( 7 8 ) (Example 1,4) In case of REFNET Joint C, indoor units of Piping between outside unit ( ) and refrigerant branch kit (part A) Piping between outside branch and outside unit (part C) Match to the size of connection piping of outside unit Capacity type of outside unit RWEYQ8 RWEYQ10 RWEYQ16 RWEYQ18, RWEYQ24 RWEYQ26- (Unit: mm) Piping size (outer diameter Min. thickness) Suction gas pipe φ φ φ φ HP/LP gas pipe Liquid pipe φ φ φ φ φ φ φ φ Piping between outside branches (part B) Select the size from the following table based on the total capacity of the outside unit to be connected to upstream Total capacity of outside unit (Unit: mm) Piping size (outer diameter Min. thickness) Suction gas pipe HP/LP gas pipe Liquid pipe (Example 2,5) In case of REFNET Joint B, indoor units of (Example 2,5) In case of REFNET Header, indoor units of Piping between refrigerant branch kit and refrigerant branch kit/bs unit Piping between BS unit and refrigerant branching kit Select one from the table below according to the total capacity of indoor units to be connected to downstream. For the gas piping size in case of 2-tube piping between refrigerant branching kit/bs unit and refrigerant branching kit, select the size of suction gas piping. The size of connection piping should not exceed the refrigerant piping size selected under the generic term of the system. Indoor capacity index < x< 0 0 x< x< 4 4 x< x< 9 9 (Unit: mm) Piping size (outer diameter minimum wall thickness) Suction gas pipe HP/LP gas pipe Liquid pipe φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ (Example 3,6) In case of REFNET Header, indoor units of Piping between BS unit (refrigerant branch kit) and indoor unit Match to the size of the connection piping on the indoor unit. Indoor unit connection piping size Indoor capacity type,, 32, 40, 50 type 63, 80, 100, 1 type 0 type 0 type (Unit:mm) Piping size (outer diameter minimum wall thickness) Gas pipe φ φ φ φ Liquid pipe φ φ φ class 18,class φ φ φ φ Total length (m) of liquid piping size at φ (kg/m) R= + Total length (m) of liquid piping size at φ (kg/m) Total length (m) of liquid 0.26 piping size at φ (kg/m) piping size at φ (kg/m) + Total length (m) of liquid piping size at φ12.7 Total length (m) of liquid piping size at φ (kg/m) Corrected volume by outside unit System name RWEYQ8, 10 RWEYQ16, 18, RWEYQ24, 26, 28, Heat pump system 3 kg 4.5 kg 6 kg 0.12 (kg/m) Heat recovery system 4 kg 6.5 kg 9 kg Example for refrigerant branch using REFNET joint and REFNET header for RWEYQ (Heat recovery system) If the outside unit is RWEYQ and the piping lengths are as at right a:φ19.1 m b:φ m c:φ m d:φ m e:φ m f:φ m g:φ m h:φ 6.4 m R= =.071 a b+u i c+d+e+f+r+s+t g+h+j+k+l+m+n+o+p.1 (kg) i:φ m j:φ m k:φ m l:φ m m: φ m n:φ m o:φ m p:φ m r:φ 9.5 3m s:φ09.5 3m t:φ09.5 3m u:φ15.9 1m f g f g F h 1 h i G j j k l n o o p q q r r 8 s 8 s u r c d a e f s c d g h t 1 A e f b i j g h A b i j B o 8 B o 8 a u b 1 d a h i t j k l l 8 o 8 11 English C: 3P N 66 Outside unit RWEYQ-P

73 Example of Connection / Pipe Size Selection / Additional Refrigerant Charge 2 Note 1. When the equivalent pipe length between outside and indoor units is 80m or more, the size of main pipes on the liquid side (refer to figure 21) must be increased according to the right table. (Never increase suction gas pipe and HP/LP gas pipe.) (Refer to figure 21) 1.Outside unit 2.Main pipes 3.Increase only liquid pipe size 4.First refrigerant branch kit 5.Indoor unit System RWEYQ8, 10PY1 RWEYQ16PY1 RWEYQ18 ~ 24PY1 RWEYQ26 ~ PY1 Liquid pipe φ9.5 φ12.7 φ12.7 φ15.9 φ15.9 φ19.1 φ19.1 φ22.2 Note 2. Allowable length after the first refrigerant branch kit to indoor units is 40m or less, however it can be extended up to 90m if all the following conditions are satisfied. (In case of Branch with REFNET joint ) Required Conditions Example Drawings 1. It is necessary to increase the pipe size (*1) between the first branch kit and the final branch kit. (Reducers must be procured on site) However, the pipes that are same pipe size with main pipe must not be increased. 8 b+c+d+e+f+g+p 90 m increase the gas pipe size (*1) of b, c, d, e, f, g Increase the pipe size (*1) as follows φ 9.5 φ12.7 φ12.7 φ15.9 φ15.9 φ19.1 φ19.1 φ22.2 φ22.2 φ.4*2 φ28.6 φ31.8*2 φ34.9 φ38.1*2 2. For calculation of Total extension length, the actual length of above pipes must be doubled. (except main pipe and the pipes that are not increased) 3. Indoor unit to the nearest branch kit 40 m 4. The difference between [Outside unit to the farthest indoor unit] and [Outside unit to the nearest indoor unit] 40 m *1 In case of heat pump system, the liquid pipe and gas pipe. In case of heat recovery system, the liquid pipe and suction gas pipe. *2 If available on the site, use this size. Otherwise it can not be increased. a+b 2+c 2+d 2+e 2+f 2+g 2 +h+i+j+k+l+m+n+p 0 m h, i, j... p 40 m The farthest indoor unit 8 The nearest indoor unit 1 (a+b+c+d+e+f+g+p)-(a+h) 40 m a Outside unit b c d e f g A B C D E F G REFNET joint (A-G) h i j k l m n Indoor units ( 1-8 ) 8 p English 12 C : 3P N Outside unit RWEYQ-P 67

74 Accessories 14. Accessories 14.1 Optional Accessories Notes: 1. Refer to the latest drawing. 2. In the case of heat recovery system, COOL/HEAT Selector cannot be connected. C: 3D Outside unit RWEYQ-P

75 Part 3 Interlock operation 3 1. Centralized Interlock Function of Water Cooled VRV-WIII With Centralized Interlocking With Connections on Each Outside Unit Basis Wiring for the Operation of Heat Source Water Pump Interlocked with Water Cooled VRV Wiring Procedure and Precautions...72 Interlock operation 69

76 Centralized Interlock Function of Water Cooled VRV-WIII 1. Centralized Interlock Function of Water Cooled VRV-WIII An interlock circuit (an auxiliary normally open contact of the electromagnetic switch for the heat source water pump) must be connected to the water cooled VRV. If a single heat source water pump is used for a number of outside units, however, centralized interlocking will be possible with an interlock circuit connected to the terminal (X3M) on every outside unit basis or the external control adaptor (DTA104A62) (optional accessory) for outside units used over out-out communication. The following figure shows an interlock wiring example of a single heat source water pump covering 3 outside units. System diagram Interlock circuit of heat source water pump Cooling water piping 1.1 With Centralized Interlocking Outside unit A Outside unit B Outside unit C Wiring procedure Connect the interlock of the heat source water pump to the external control adaptor (DTA104A62) (optional accessory) and perform out-out connection wiring. Outside unit A Outside unit B Outside unit C Adaptor for *Possible up to 10 units external control L.N.O F1 F2 OUT-OUT OUT-OUT OUT-OUT F1 F2 F1 F2 F1 F2 Interlock circuit of heat source water pump Out-out connection wiring Use the conductor of sheathed wire (2 wire) (no polarity) Field work Field settings Set the centralized interlock and external demand setting switch pins (DS1-3) on the PCB (A2P) of outside unit A to ON. The pins are factory set to OFF before shipping. Notes : The external control adaptor (DTA104A62) for outside units has a display for low noise. However, the water cooled VRV is used as a circuit to interlock the heat source water pump. Therefore, no low-noise control function is available. No wiring to the interlock input terminal pins (X3M) is required at the time of centralizing interlock wiring. 70 Interlock operation

77 Centralized Interlock Function of Water Cooled VRV-WIII 1.2 With Connections on Each Outside Unit Basis Wiring procedure Connect the interlock signal of the heat source water pump to the relay (X), and connect the normally open contact of the relay to each outside unit. Outside unit A Outside unit B Outside unit C 3 X3M 3 4 X3M 3 4 X3M 3 4 Field work X X X X Interlock circuit for heat source water pump Field settings Keep the centralized interlock and external demand setting switch pins (DS1-3) on the PCB (A2P) of outside unit A set to OFF (i.e., maintain the factory settings). Never perform the following wiring. A single interlock of the heat source water pump connects to a number of outside units by crossover wiring. Outside unit A Outside unit B Outside unit C X3M 3 4 X3M 3 4 X3M 3 4 Field work Interlock circuit for heat source water pump Interlock operation 71

78 Wiring for the Operation of Heat Source Water Pump Interlocked with Water Cooled VRV 2. Wiring for the Operation of Heat Source Water Pump Interlocked with Water Cooled VRV The water source VRV outputs operation signals for the outside unit for the interlocked operation of the heat source water pump. A wiring method for the above is introduced below. The following figure explains a wiring example of a multi-line system. Expansion tank Closed-type cooling tower Boiler Interlock signal Interlock circuit of heat source water pump Centralized interlocking wiring Sub unit Master unit Operation output Sub unit Master unit Operation output Sub unit Sub unit Master unit Operation output 2.1 Wiring Procedure and Precautions Wire the field power control board through terminals (1) and (2) of the terminal block (X2M) of the outside unit and install an operation circuit for the heat source water pump. In the case of multiple installation of outside units as shown above, not only the terminal block (X2M) of the master unit but also that of each sub unit will output operating power, thus making it possible to use any terminal block (X2M) for the interlock circuit for the heat source water pump. Unlike the centralized interlock wiring of heat source water pump, output signals can be obtained on a line basis only. Operation output from the terminal block (X2M) is output when the operation reference of the indoor unit is output. (When the operation reference of the remote controller is output, signals will be always output regardless of the modes of operation, such as cooling, heating, or fan modes.) Outside unit X2M X2M X2M (1) (2) (1) (2) (1) (2) Field power control panel X3 X2 X1 X3 X2 X1 Starting heat source water pump Field work 72 Interlock operation

79 Part 4 Appendix 1. Basic Configurations of VRV-WIII Basic Configuration for Cooling Operation Basic Configuration for Heating Operation Other Equipment Cooling Towers Pumps Expansion Tank Selection of Cooling Tower and Boiler Water Pipes Reverse Return Method for Dimensioning the Water Pipes Water Piping Design Design and Installation Cautions when Designing Piping System safety requirements Pump Interlock Flow switch Anti freezing protection Water piping examples Appendix 73

80 Basic Configurations of VRV-WIII 1. Basic Configurations of VRV-WIII 1.1 Basic Configuration for Cooling Operation In erate climatic regions, excess heat within the water circuit can usually be exhausted via a dry cooler or cooling tower. However, alternative heat sinks can also be used, including natural water sources such as rivers, lakes and bore holes - existing process or chilled water circuits can also be utilized if fitted with heat transfer facilities. Expansion tank Cooling tower (Closed type) V1 Control panel Pumping operation signal VRV-WIII T1 Interlock operation <With pump> Heat exchanger (Plate type) Pump <Heat source water> T2 Boiler V2 The diagram shows that during summer operating cycles, a drop in cooling water erature below pre set erature level T1 causes 3-way valve bypass V1 to open. This bypass closes once more when T1 is exceeded, reducing the erature by allowing an increased flow of water to the cooling tower. On/off control of pump and fan in closed cooling tower circuits is also provided by 3-way valve, V1. 74 Appendix

81 Basic Configurations of VRV-WIII 1.2 Basic Configuration for Heating Operation Low pressure hot water from a boiler is generally utilized to maintain the required erature levels within the water circuit - but steam, district/process/industrial heating systems or even solar energy can also act as the heat source. Expansion tank Cooling tower (Closed type) 4 V1 Control panel Pumping operation signal VRV-WIII T1 Interlock operation <With pump> Heat exchanger (Plate type) Pump <Heat source water> T2 Boiler V2 During winter operation, water circuit erature T2 is maintained by circulating water through the boiler (or similar) via valve V2, which shuts off immediately the pre set erature is achieved. Appendix 75

82 Other Equipment 2. Other Equipment 2.1 Cooling Towers The cooling tower relies on the process of evaporation, enabling the condenser water circuit to be cooled to a erature below the ambient wet bulb. Cooling tower performance is dependent on the ambient wet bulb, while dry bulb erature has little effect on performance. Cooling towers are either of the "open" or "closed" type. In an open tower, the condenser water / fluid circuit comes into direct contact with the outside air. In a closed tower, the condenser water is circulated in the heat exchanger tubes, while an evaporating water film falls on the fins of the tube exchanger Open Cooling Towers Open cooling towers are classified in terms of the airflow configuration. "Forced draught" and "induced draught" towers are the most common types found in the HVAC industry. The forced draught tower is driven by a fan, which blows air through the tower. Induced draught towers pull the air through the tower. Depending on whether the air is drawn against the flow of the water or across the flow of water in the tower, the systems can be further classified as "counter flow" or "cross flow" configurations. 1. Induced draught tower This type of unit utilizes axial flow fans and is generally thought to be the most efficient and therefore the most popular, in use today. Water in Air out Water in Air in Water out Air in Induced draught towers Large propeller fans on the air discharge or the top of the tower draw air counter flow or cross flow to the condenser water. Due to the higher discharge velocities they are less susceptible to short air circuits or recirculation. Noise levels are higher due to the low frequency noise associated with propeller and axial fans. 76 Appendix

83 Other Equipment 2. Forced draught tower Water sprays Air out Air in 4 Forced draught towers Water out Forward curved centrifugal fans on the air inlet will force/push the air in either a counter flow or cross flow pattern. Centrifugal fans use more power but generate enough static pressure to overcome any problems associated with internally located cooling towers or those fitted with sound dampers. These towers are quieter than others and are particularly useful for low noise applications. The cross flow tower offers the benefit of a lower profile unit where aesthetics or plant room height may be restricted. On the other hand, the power input is approximately double that of an induced draught tower. Typical air/water eratures for an open cooling tower operating in a erate climatic region: Air CWB 37 C Cooling tower 32 C Cooled water 27 CWB Appendix 77

84 Other Equipment Closed Cooling Towers Air outlet Eliminator Water spray device Cooling coil Cooling water inlet Cooling water outlet Air inlet Supplemental water Blower Water spray pump Water tank Closed type cooling tower The closed type of cooling tower is also used in condition of such as severe air pollution. As shown in figure above, this type of cooling tower is designed to distribute cooling water in different piping so that the cooling water, flowing in the piping, will not directly contact with air. Cooling is performed through the evaporation of water distributed and the airflow. The closed type of cooling tower in winter can also be used without distributing water or by adopting antifreeze fluid in the cooling water. 78 Appendix

85 Other Equipment 2.2 Pumps Pump performance can be given in terms of discharge capacity, head, shaft, power and efficiency The discharge capacity is the required water flow rate (m³/min or l/min). The pump is selected based on the suction opening diameter. The correlation between the suction size and the water flow is listed in table. Correlation between pump suction size and water flow rate Suction size (mm) Discharge capacity (m³/min) ~ ~ ~ ~ ~ ~ ~ ~ The head is the pressure produced by the pump in metres of water column. The higher the discharge capacity of the pump, the lower the head. The required pump power is roughly proportional to the delivered capacity. The pump efficiency (%) is defined as the ratio between the delivered work and the shaft power: efficiency % = (power output / power input) x 100% Pump efficiency increases with increasing flow, until the optimum operating efficiency point (BEP) is reached and then decreases as flow increases further. The pump performance chart is the summary of the head, efficiency and discharge capacity. Pump selection starts with the collection of information concerning: The location of the operating point The system's resistance curve The design flow rate The pressure drop The pump is operated at the intersection between the head and the system resistance curve. This intersection is called the pump operating point. Total Head Total head System resistance curve Operating point Capacity Appendix 79

86 Other Equipment When the gate valve is throttled, the resistance increases and the water flow rate decreases. In doing this, the operating point can be changed. The same phenomena, a decrease in water flow rate and an increase in the head loss, can be caused when rust and / or scale is deposited on the internal surface of the water piping system. Total Head Total head System resistance curve Operating point Capacity The pump selection can be carried out through calculation or by use of the pump selection chart. In both cases, once the decision regarding the pipe size has been taken, the maximum friction loss (usually the longest pipe branch in the piping system) should be calculated: H = Ha + Hf + Ht + Hk Where: H = total friction loss Ha =actual head (mh2o) = difference between the discharge and suction level Hf = linear friction loss in straight pipes (mh2o) = from friction loss diagram Ht = local friction loss (mh2o) caused by fittings = equivalent piping length * basic friction loss Hk =internal friction loss (mh2o) of evaporator/condenser (of the cooling tower and VRV-WIII) may be obtained from the manufacturer's data. 80 Appendix

87 Other Equipment 2.3 Expansion Tank The purpose of the expansion tank is to maintain system pressure by allowing the water to expand when the water erature increases in order to prevent pipes from bursting. It also provides the means for adding water to the system. An expansion tank is required in a closed system. In an open system, the reservoir acts as the expansion tank. The expansion tank can be of the open or closed type. The open expansion tank is located at the suction side of the pump, above the highest point in the system. At this location, the tank provides atmospheric pressure equal to or higher than the pump suction, preventing air from leaking into the system. 4 The closed expansion tank work at atmospheric pressure. The tank is located at the suction side of the pump. The capacity of a closed expansion tank is greater than that of an open expansion tank operating under the same conditions. When sizing the expansion tank, the engineering supplied by the tank manufacturer should be consulted. 2.4 Selection of Cooling Tower and Boiler Cooling Tower We recommend to use closed type to avoid trouble caused by corrosion Selection of Cooling Tower Capacity Items for the selection of cooling tower capacity (CT:kW) A : Building maximum cooling load (Qa:kW) B : Total air conditioner cooling capacity (Qc:kW) C : Total air conditioner power consumption (Qm:kW) CT = (Qa+Qm Qa/Qc) 1.1~ Selection of Boiler Capacity Items for the selection of boiler capacity (Bo:kW) A : Building maximum heating load (Qb:kW) B : Total air conditioner heating capacity (Qh:kW) C : Total air conditioner power consumption (Qm:kW) Bo = (Qb-Qm Qb/Qh) 1.2~ Temperature of Heat Source Water Classified by Operation Mode 1. Temperature of heat source water while in cooling operation Resign the erature of heat source water while in cooling operation to the situation and keep the erature as low as possible. The lower the erature of heat source water is, the higher the operation efficiency of the air conditioner will be. The operating lower limit erature of heat source water of the water cooled VRV is 15 C. 2. Temperature of heat source water while in heating operation Keep the erature of heat source water while in heating operation as high as possible. The higher the erature of heat source water is, the higher the operation efficiency of the air conditioner will be. Make a decision after considering the energy cost of the heating source. The operating upper limit erature of heat source water of the water cooled VRV is 45 C. 3. Temperature of heat source water between heating and cooling seasons (cooling and heating simultaneous operation) The air conditioner will be operated highly efficiently if the erature of heat source water is changed according to the ratio of cooling to heating on site. Make a decision after considering the energy cost of the heating source. Appendix 81

88 Water Pipes 3. Water Pipes Water at the pre set erature is supplied to all VRV-WIII condensing units via a 2-pipe closed circuit. Water eratures within the circuit must be maintained at 15 to 45 C and pumps should be of sufficient duty to match the requirements of all VRV-WIII condensing units. Air purging should be carried out in closed circuit systems and a strainer installed to prevent impurities from entering the water flow. Expansion tanks are also important since they allow for erature changes within the circuit. System start up should be provided by a controller, which also regulates circuit water erature and protects the system. Steel, stainless steel, copper, and vinyl pipes are available for use as piping materials. When designing a water piping system, the following should be considered: Water must be supplied to the required locations according to the needs of each VRV-WIII. Head and friction losses should be kept at a minimum. Water velocity should be properly controlled to avoid water streaming noise, pipe vibration or pipe expansion/ contraction due to erature. Differences Attention should be paid to water management: impact of the water quality, corrosion prevention Enough arrangements should be provided for easy service and maintenance. 3.1 Reverse Return Method for Dimensioning the Water Pipes According to this method, the length of the water piping return and supply is almost equal for all VRV-WIII condensing units in the system. The friction loss is almost the same, resulting in a balanced water flow to each condensing unit. Adversely, the piping length is longer. Since the water circuits are equal for each unit, the major advantage of the reverse return method is that it seldom requires balancing. Due to the more balanced flow, the test run and maintenance work becomes easier. It is often the most economical design for new build projects. RWEYQ RWEYQ RWEYQ RWEYQ 3.2 Water Piping Design Friction Losses In order to force a fluid through a pipe, pressure is required to overcome the viscous friction forces. Friction loss occurs when water flow through a pipe. The Darcy equation is the basis of all fluid flow equations and relates the pipe pressure drop required to overcome the fluid viscous friction forces: αp = ( ρ* f * l * v² ) / ( 2 * d ) Where: αp = friction losses (Pa) ρ = fluid density (kg/m³) f = friction factor, depending on the roughness of the internal surface of the pipe (dimensionless) l = pipe length (m) v = fluid velocity (m/s) d = internal pipe diameter (m) 82 Appendix

89 Water Pipes Water Velocity The recommended water velocity through the piping is depending on 2 conditions: Pipe diameter Effect of erosion. The table below lists the recommended velocity ranges for the different piping diameters. The higher the water velocity, the higher the noise level of the moving water and the entrained air and the erosion will be. Recommended water velocity Diameter (mm) Velocity range (m/s) >1 2.1~2.7 50~ ~2.1 about 0.6~1.2 Since erosion is a function of time, water velocity and quality of water, the design water velocity is subject to the judgment of the design engineer In VRV-WIII capacity tables 4 water flows are mentioned for each model/connection ratio: 50, 60, 96, 1 l/min 2. Water flows of either 60 or 96 l/min are advisable in order to maintain a balance between pipe diameter and pressure losses. As water flow increases, pipe diameter reduces whereas pressure losses increase with increased water flow. Procedure for Pipe Selection Friction loss for water in commercial steel pipe (Schedule 40) Reverse return piping was chosen. The water flow should be determined for each section of the water circuit. By means of the using the friction loss diagram, the diameter should be determined based on following input: - water flow - recommended domain of water velocities - recommended domain of linear pressure losses ( Pa/m). The total linear friction losses should be determined by multiplying the pressure drop (Pa/m) obtained from the diagram, with the pipe length. Local pressure losses should be calculated for special fittings like elbows, T-connections, reducers, etc. The values can be obtained from pipe manufacturers' catalogues. The following table can be also used: the equivalent length should be multiplied with the pressure drop (Pa/m) determined before. Nominal pipe size mm in 1/2 3/ /4 1 1/ /2 3 Elbow T-connection straight through T-connection through branch Gate valve Reducer (3/4) Globe valve Appendix 83