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Design of 3WAY VRF SYSTEM

2 - 1

Contents

2. DESIGN OF 3WAY VRF SYSTEM

1. Model Selecting and Capacity Calculator ........................................................................2-2

2-21-1. Operating Range .............................................................................................................

2-31-2. Procedure for Selecting Models and Calculating Capacity ...........................................

2-41-3. Tubing Length .................................................................................................................

2-61-4. Tubing Size......................................................................................................................

2-81-5. Installation Standards......................................................................................................

2-91-6. Straight Equivalent Length of Joints ...............................................................................

2-101-7. Check of limit density ....................................................................................................

2-11................................................................8-1 Calculation of Actual Capacity of Indoor Unit

2-517-2.

Solenoid Valve Kit for 3WAY VRF System ......................................................................

2-405. HOW TO PROCESS TUBING ..........................................................................................

2-477. Optional Parts ..................................................................................................................

2-415-2. Connecting Tubing Between Indoor and Outdoor Units .............................................

2-405-1. Connecting the Refrigerant Tubing ..............................................................................

2-425-3. Insulating the Refrigerant Tubing .................................................................................

2-435-5. Finishing the Installation................................................................................................

2-477-1.

Distribution Joint Kits

.....................................................................................................

2-446. AIR PURGING .................................................................................................................

2-44Air Purging with a Vacuum Pump (for Test Run) Preparation ..................................

................................................................................................................. 2-182. System Design

2-182-1. System Example............................................................................................................

2-23............................................................................................2-3. Installing Distribution Joint

2-20.......2-2. Example of Tubing Size Selection for Extension and Additional Charge Amount

2-243. Electrical Wiring ..............................................................................................................

2-243-2.

Recommended Wire Length and Wire Diameter for Power Supply System ..................

2-243-1. General Precautions on Wiring .....................................................................................

2-253-3. Wiring System Diagrams...............................................................................................

2-283-4. Important Note When Wiring for Common Type ..........................................................

2-313-5. Important Note When Wiring for Y1 Type ....................................................................

2-324. Installation Instructions ..................................................................................................

4-6. Dimensions of Wind Ducting

2-35Reference diagram for snow-proof ducting (field supply)............................................

2-324-1. Selecting the Installation Site for Outdoor Unit ............................................................

2-33.....................................................................2-4 Removing Fin Guard for Heat Exchanger

2-33.......................................................................3-4 Shield for Horizontal Exhaust Discharge

2-33.........................................................4-4 Installing the Outdoor Unit in Heavy Snow Areas

4-5. 2-33Precautions When Installing in Heavy Snow Areas ......................................................

2-34Reference diagram for air-discharge chamber (field supply).......................................

2-364-8. Transporting the Outdoor Unit .....................................................................................

2-364-9. Installing the Outdoor Unit ............................................................................................

2-374-10. Remove the Brackets Used for Transport ..................................................................

2-384-13. Connect the Tubing.....................................................................................................

2-374-11. Routing the Tubing ......................................................................................................

Refer to the 2WAY VRF SYSTEM TECHNICAL DATA (TD831157)

2-32Outdoor Unit ..................................................................................................................

Indoor Unit

2-435-4. Taping the Tubes ..........................................................................................................

2-161-10. ...Capacity Correction Graph According to Tubing Length and Elevation Difference

2-15................................9-1 Capacity Correction Graph According to Temperature Condition

4-7. Dimensions of Snow Ducting

2-384-12. Prepare the Tubing......................................................................................................

TD831158-00_3WAY_VRF_SYS.indb 1TD831158-00_3WAY_VRF_SYS.indb 1 2012/01/23 17:30:102012/01/23 17:30:10

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Panasonic U-72MF1U9E Guía de usuario Pagina 15

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