Daikin VRV-WIII- Manuals

Daikin VRV-WIII– User Manual in PDF format online.

Manuals:

User Manual

User Manual Daikin VRV-WIII

Summary

Page 2 - Air Conditioners; W a t e r - c o o l e d d e s i g n g u i d e; Technical Data

E E D E N 1 3 - 2 0 1 Air Conditioners W a t e r - c o o l e d d e s i g n g u i d e Technical Data

Page 3 - TABLE OF CONTENTS

• VRV Systems • Water-cooled design guide 1 • Water-cooled design guide 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 Basic configurations of VRV-WIII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4 - OC; Introduction

• Water-cooled design guide • VRV Systems • Water-cooled design guide 2 1 1 OC VR VV R V R V - W I "Please note that this material is for reference only. In practice, construction methods may vary with projects and local legislation. Therefore, please consult your design office for design and co...

Page 5 - Basic configurations of VRV-WIII; - 1 Basic configuration for cooling operation; Expansion Tank

• VRV Systems • Water-cooled design guide 3 • Water-cooled design guide 3 1 2 2 Basic configurations of VRV-WIII 2 - 1 Basic configuration for cooling operation In temperate climatic regions, excess heat within the water circuit can usually be exhausted via a dry cooler or cooling tower. However, al...

Page 6 - - 2 Basic configuration for heating operation

• Water-cooled design guide • VRV Systems • Water-cooled design guide 4 1 2 2 Basic configurations of VRV-WIII 2 - 2 Basic configuration for heating operation Low pressure hot water from a boiler is generally utilized to maintain the required temperature levels within the water circuit - but steam, ...

Page 7 - - 3 Alternative solution; Decoupler

• VRV Systems • Water-cooled design guide 5 • Water-cooled design guide 3 1 2 2 Basic configurations of VRV-WIII 2 - 3 Alternative solution Cooling tower and boiler replaced by heat pump chiller The use of a boiler and cooling tower to maintain condenser circuit temperature can be replaced by a heat...

Page 8 - Water piping elements; - 1 Heat rejection equipment

• Water-cooled design guide • VRV Systems • Water-cooled design guide 6 1 3 3 Water piping elements Water at the pre set temperature is supplied to all VRV-WIII condensing units via a 2-pipe closed circuit.. Water temperatures within the circuit must be maintained at 15 to 45°C and pumps should be o...

Page 9 - Open cooling towers; Induced draught tower

• VRV Systems • Water-cooled design guide 7 • Water-cooled design guide 3 1 3 3 Water piping elements 3 - 1 Heat rejection equipment 3 - 1 - 1 Cooling towers types 3 - 1 - 1 - 1 Open cooling towers Open cooling towers are classified in terms of the airflow configuration. "Forced draught" and...

Page 10 - Forced Draught Tower

• Water-cooled design guide • VRV Systems • Water-cooled design guide 8 1 3 3 Water piping elements 3 - 1 Heat rejection equipment 3 - 1 - 1 Cooling towers types 3 - 1 - 1 - 1 Open cooling towers a Forced Draught Tower Forward curved centrifugal fans on the air inlet will force/push the air in eithe...

Page 11 - Closed cooling towers; Evaporative cooling tower:

• VRV Systems • Water-cooled design guide 9 • Water-cooled design guide 3 1 3 3 Water piping elements 3 - 1 Heat rejection equipment 3 - 1 - 1 Cooling towers types 3 - 1 - 1 - 2 Closed cooling towers The water being cooled is contained within a heat exchanger or coil. Numerous advantages are associa...

Page 12 - Rejected heat Qr

• Water-cooled design guide • VRV Systems • Water-cooled design guide 10 1 3 3 Water piping elements 3 - 1 Heat rejection equipment 3 - 1 - 2 Cooling tower selection Cooling tower selection is based on the amount of heat to be rejected (the actual cooling capacity + compressor power) and the optimum...

Page 13 - - 2 Heat transfer equipment

• VRV Systems • Water-cooled design guide 11 • Water-cooled design guide 3 1 3 3 Water piping elements 3 - 2 Heat transfer equipment An external heat source, usually in the form of a LPHW boiler and associated heat exchanger is necessary in applications in which the operating temperature of the wate...

Page 14 - - 3 - 1 Reverse return method for dimensioning the water pipes:

• Water-cooled design guide • VRV Systems • Water-cooled design guide 12 1 3 3 Water piping elements 3 - 3 Water pipes The 2-pipe layout is commonly used and consists out of one pipe to and one from the terminal (fan coil unit or VRV-WIII). Both chilled or hot water can be supplied to the terminal. ...

Page 15 - rd Floor

• VRV Systems • Water-cooled design guide 13 • Water-cooled design guide 3 1 3 3 Water piping elements 3 - 3 Water pipes 3 - 3 - 4 Example of dimensioning the water pipes: Preliminary information on the VRV-WIII systems, according with capacity tables: • system 3rd floor: 30 HP - 130% connection rat...

Page 16 - Procedure for pipe selection:; Black Steel Pipe; Friction Loss for Water in Commercial Steel Pipe; nominal pipe sizes

• Water-cooled design guide • VRV Systems • Water-cooled design guide 14 1 3 3 Water piping elements 3 - 3 Water pipes 3 - 3 - 4 Example of dimensioning the water pipes: R ECOMMENDATION 1 in VRV-WIII capacity tables 4 water flows are mentioned for each model/connection ratio: 50, 60, 96, 120 l/min 2...

Page 18 - - 6 Temperature and pressure measurement points

• Water-cooled design guide • VRV Systems • Water-cooled design guide 16 1 3 3 Water piping elements 3 - 5 Pumps N OTE 1 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 ...

Page 20 - System safety requirements; IN

• Water-cooled design guide • VRV Systems • Water-cooled design guide 18 1 4 4 System safety requirements 4 - 1 Pump interlock Problems can arise if the VRV-WIII condensing units are allowed to operate without sufficient water within the circuit. When interlocking a water pump with a VRV-WIII system...

Page 21 - - 3 Anti freezing protection; Example; Indoor

• VRV Systems • Water-cooled design guide 19 • Water-cooled design guide 3 1 4 4 System safety requirements 4 - 3 Anti freezing protection Anti freezing protection should be provided for the cooling tower and the external water piping during winter Typical measures: • if the temperature drops, the p...

Page 22 - - 4 Water piping strainer; WATER

• Water-cooled design guide • VRV Systems • Water-cooled design guide 20 1 4 4 System safety requirements 4 - 4 Water piping strainer A strainer kit 50 mesh should be provided for each outdoor unit in order to filter the water and protect the VRV-WIII heat exchanger against dirt. Why the strainer a ...

Page 23 - - 5 Recommendations for multi outdoor unit installations; up

• VRV Systems • Water-cooled design guide 21 • Water-cooled design guide 3 1 4 4 System safety requirements 4 - 5 Recommendations for multi outdoor unit installations Recommendations for multi outdoor unit installations, in order to prevent oil and refrigerant flow back to a stopped outdoor unit: • ...

Page 24 - Liquid Side Piping

• Water-cooled design guide • VRV Systems • Water-cooled design guide 22 1 4 4 System safety requirements 4 - 5 Recommendations for multi outdoor unit installations • A straight refrigerant pipe of 500mm should be positioned in front of the Y branch kit which couples outdoor unit piping. 4 - 6 The t...

Page 25 - System control; - 2 Interlocking VRV-WIII outdoor units; Interlocking

• VRV Systems • Water-cooled design guide 23 • Water-cooled design guide 3 1 5 5 System control 5 - 1 Complete control of a VRV-WIII • The control for the refrigerant side is identical to that of an air cooled VRVIII -- by the use of the DIII communication line Complete control of a VRV-WIII system ...

Page 26 - Refnet pipe systems

• Water-cooled design guide • VRV Systems • Water-cooled design guide 24 1 6 6 Refnet pipe systems DISCHARGE GAS SIDE JUNCTION SUCTION GAS SIDE JUNCTION LIQUID SIDE JUNCTION KHRQ5 8T7 KHRQ 23M7 5T8 K H R Q 23M 64T8 KHR Q 23M 20T8 KHRQ 23M2 9T9 KFRP23M 75T8 KHRP23M64T8 KHRP 23 M33T8 KHRQ22M 75T8 KHRQ...

Page 34 - Typical VRV-WIII installations; - 1 Example Installation

• Water-cooled design guide • VRV Systems • Water-cooled design guide 32 1 7 7 Typical VRV-WIII installations 7 - 1 Example Installation RWEY P T P T R R R RWEY P T P T R R R RWEY P T P T R R R RWEY P T P T R R R RWEY P T P T R R R To BS unit To BS unit RWEY P T P T R R R To BS unit RWEY P T P T R R...

Page 36 - - 2 Example Installation

• Water-cooled design guide • VRV Systems • Water-cooled design guide 34 1 7 7 Typical VRV-WIII installations 7 - 2 Example Installation (Use of open type cooling tower for low ambient climates) RWEY RWEY RWEY RWEY RWEY To BS unit To BS unit RWEY P T P T R R R To BS unit RWEY P T P T R R R RWEY P T ...

Page 38 - - 3 Example Installation

• Water-cooled design guide • VRV Systems • Water-cooled design guide 36 1 7 7 Typical VRV-WIII installations 7 - 3 Example Installation (with part of central heating equipment used for this installation) RWEY P T P T R R R RWEY P T P T R R R RWEY P T P T R R R RWEY P T P T R R R RWEY P T P T R R R ...

Page 40 - - 4 Example Installation

• Water-cooled design guide • VRV Systems • Water-cooled design guide 38 1 7 7 Typical VRV-WIII installations 7 - 4 Example Installation (With heat recovery from multiple systems through water circuit) Temperature indicating controller T2 RWEY P T P T R R R To BS unit RWEY P T P T R R R RWEY P T P T...