Panasonic WU-216MF2U9 - Technical Data Manual - Page 17

DESIGN OF 3WAY VRF SYSTEM, Air Purging with a Vacuum Pump for Test Run Preparation

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CCoonntteennttss Design of 3WAYY VVRRFF SSYYSSTTEEMM 2. DESIGN OF 3WAY VRF SYSTEM 1. Model Selection and Capacity Calculator 2-3 1-1. Operating Range ...2-3 1-2. Procedure for Selecting Models and Calculating Capacity 2-4 1-3. Tubing Length...2-5 1-4. Tubing Size ...2-8 1-5. Straight Equivalent Length of Joints 2-9 1-6. Additional Refrigerant Charge 2-9 1-7. System Limitations...2-10 1-8. Installation Standards 2-11 1-9. Check of Limit Density 2-11 1 1-10. Calculation of Actual Capacity of Indoor Unit 2-12 2. System Design ...2-17 2-1. System Example...2-17 2-2. Example of Tubing Size Selection and Refrigerant Charge Amount 2-18 2-3. Installing Distribution Joint 2-20 2 3. ELECTRICAL WIRING...2-21 3-1. General Precautions on Wiring 2-21 3-2. Recommended Wire Length and Wire Diameter for Power Supply System 2-21 3-3. Wiring System Diagram 2-22 3-4. Connecting Multiple Indoor Units to a Single Solenoid Valve Kit 2-24 3 4. SELECTING THE INSTALLATION SITE 2-29 4-1. Outdoor Unit ...2-29 4-2. Installation Standards for Outdoor Unit 2-30 4-3. Shield for Horizontal Exhaust Discharge 2-39 4-4. Installing the Outdoor Unit in Heavy Snow Areas 2-39 4-5. Precautions When Installing in Heavy Snow Areas 2-39 4 4-6. Dimensions of Wind Ducting 2-40 4-7. Dimensions of Snow Ducting 2-42 5. HOW TO INSTALL THE OUTDOOR UNIT 2-44 5-1. Transporting...2-44 5-2. Installing the Outdoor Unit 2-44 5 5-3. Routing the Tubing ...2-45 5-4. Prepare the Tubing ...2-46 5-5. Connect the Tubing ...2-46 Indoor Unit * Refer to the 3WAY VRF SYSTEM TECHNICAL DATA (TD831158) 6 6. HOW TO PROCESS TUBING 2-49 6-1. Connecting the Refrigerant Tubing 2-49 6-2. Connecting Tubing Between Indoor and Outdoor Units 2-50 6-3. Insulating the Refrigerant Tubing 2-51 6-4. Taping the Tubes ...2-51 7 6-5. Finishing the Installation 2-51 7. AIR PURGING ...2-52 Air Purging with a Vacuum Pump (for Test Run) Preparation 2-52 8 2 - 1 9

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Design of 3WAY VRF SYSTEM
2
- 1
2
Contents
2. DESIGN OF 3WAY VRF SYSTEM
1. Model Selection and Capacity Calculator
..........................................................................
2-3
2-3
1-1. Operating Range
...........................................................................................................
2-4
1-2. Procedure for Selecting Models and Calculating Capacity
............................................
2-5
1-3. Tubing Length
................................................................................................................
2-8
1-4. Tubing Size
....................................................................................................................
2-9
1-5. Straight Equivalent Length of Joints
...............................................................................
2-9
1-6. Additional Refrigerant Charge
........................................................................................
2-10
1-7. System Limitations
........................................................................................................
2-11
.
8
-
1
Installation Standards
...................................................................................................
2-49
6. HOW TO PROCESS TUBING
.............................................................................................
2-50
6-2. Connecting Tubing Between Indoor and Outdoor Units
..............................................
2-49
6-1. Connecting the Refrigerant Tubing
..............................................................................
2-51
6-3. Insulating the Refrigerant Tubing
.................................................................................
2-51
6-5. Finishing the Installation
................................................................................................
2-52
7.
AIR PURGING
....................................................................................................................
2-52
Air Purging with a Vacuum Pump (for Test Run) Preparation
..................................
...................................................................................................................
2. System Design
2-17
2-1. System Example
..........................................................................................................
2-20
............................................................................................
2-3. Installing Distribution Joint
2-18
2-2. Example of Tubing Size Selection and Refrigerant Charge Amount
............................
2-21
2-17
3. ELECTRICAL WIRING
.........................................................................................................
2-21
3-2.
Recommended Wire Length and Wire Diameter for Power Supply System
..................
2-21
3-1. General Precautions on Wiring
....................................................................................
2-44
5. HOW TO INSTALL THE OUTDOOR UNIT
..........................................................................
2-44
5-1. Transporting
..................................................................................................................
2-24
3-4. Connecting Multiple Indoor Units to a Single Solenoid Valve Kit
..................................
2-22
3-3. Wiring System Diagram
................................................................................................
2-29
4. SELECTING THE INSTALLATION SITE
.............................................................................
4-7. Dimensions of Snow Ducting
........................................................................................
2-39
4-3. Shield for Horizontal Exhaust Discharge
......................................................................
2-39
........................................................
4-4. Installing the Outdoor Unit in Heavy Snow Areas
2-30
4-2. Installation Standards for Outdoor Unit
.........................................................................
2-39
4-5. Precautions When Installing in Heavy Snow Areas
.....................................................
4-6. Dimensions of Wind Ducting
.........................................................................................
2-40
2-42
2-44
5-2. Installing the Outdoor Unit
...........................................................................................
2-45
5-3. Routing the Tubing
.......................................................................................................
2-46
5-4. Prepare the Tubing
........................................................................................................
2-46
5-5. Connect the Tubing
......................................................................................................
*
Refer to the 3WAY VRF SYSTEM TECHNICAL DATA (TD831158)
2-29
4-1. Outdoor Unit
...............................................................................................................
Indoor Unit
2-51
6-4. Taping the Tubes
.........................................................................................................
2-12
1-10. Calculation of Actual Capacity of Indoor Unit
..............................................................
2-11
.
9
-
1
Check of Limit Density
..................................................................................................