Airwell DSV036 Engineering Manual

Engineering Manual

VRF Air-Conditioning System

VRF-Outdoor Unit: YAV

Cassette: CKV / KXV

Floor-Ceiling: SXV

Ducted: DLV / DSV

Wall-Mounted: PNV

11,2 to 14 kW

12,5 to 16 kW

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ABBREVIATION EXPLANATION.....................................................................................................................................4

PART I PRODUCT OUTLINE.............................................................................................................................................7

1 VRF SYSTEM OUTLINE ..........................................................................................................................................................8

2 PRODUCT MODEL INTRODUCTION ....................................................................................................................................9

3 VRF SYSTEM PROJECT DESIGN .........................................................................................................................................13

PART II VRF SYSTEM WORKING AND CONTROL ELEMENTS INTRODUCTION..................................34

1 REFRIGERATION SYSTEM OUTLINE ...............................................................................................................................35

2 INDOOR UNIT’S FAN CONTROL........................................................................................................................................40

3 OUTDOOR UNIT’S FAN CONTROL.....................................................................................................................................43

4 COMPRESSOR CONTROL.....................................................................................................................................................46

5 EEV(ELECTRONIC EXPANSION VALVE) CONTROL .......................................................................................................52

6 SYSTEM FAULTS AND PROTECTIONS ..............................................................................................................................55

PART III INDOOR UNIT.....................................................................................................................................................63

1 SLIM CASSETTE SERIES (CKV) ..........................................................................................................................................64

2 CASSETTE SERIES(KXV)......................................................................................................................................................89

3 FLOOR AND CEILING SERIES(SXV).................................................................................................................................114

4 SLIM DUCTED SERIES(DLV) .............................................................................................................................................139

5 DUCTED SERIES(DSV)........................................................................................................................................................162

6 WALL MOUNTED SERIES(PNV) ........................................................................................................................................178

PART IV OUTDOOR UNIT..............................................................................................................................................203

1 OUTDOOR UNIT...................................................................................................................................................................204

2 HMI(HUMAN AND MACHINE INTERFACE) INTRODUCTION.....................................................................................236

PART V CONTROLLER COMPONENTS ...................................................................................................................245

1 VRF CONTROL SYSTEM INTRODUCTION......................................................................................................................246

2 LWC(LOCAL WIRED CONTROLLER) INTRODUCTION ................................................................................................247

3 LWCS(LOCAL WIRED CONTROLLER SIMPLIFIED) ......................................................................................................278

4 IR-RC(INFRA-RED REMOTE CONTROLLER)..................................................................................................................293

PART VI IDU AND ODU TROUBLESHOOTING.....................................................................................................300

1 FAULT AND PROTECTION CODE LIST ............................................................................................................................301

2 INDOOR UNIT TROUBLESHOOTING ...............................................................................................................................303

3 OUTDOOR UNITS TROUBLESHOOTING .........................................................................................................................324

PART VII APPENDIX.........................................................................................................................................................364

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1 R410A SATURATION TABLE(GAUGE PRESSURE) .........................................................................................................365

2 PC MONITOR OPERATION INSTRUCTION......................................................................................................................366

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Abbreviation explanation

Abbreviation Explanation

A/C Air-Conditioner

AC Alternating Current.

ATR/ATP Acceptance Test Results / Procedure

BMS Building Management System

CCR Compressor Current

CDB Compressor Driver Board

CDT Compressor Discharge Temperature

CDT1 Inverter comp. Discharge Temperature

CDT2 Fixed speed comp. Discharge Temperature

COMP Compressor

CRT Calculated Room Temperature

CST Compressor Suction Temperature

CST1 Inverter Comp. Suction Temperature

CST2 Fixed speed Comp. Suction Temperature

CTEST Charge test

CTT Compressor Top Temperature

DB Dry Ball

DCI Direct Current Inverter

DM Display Module

EEV Electronic Expansion Valve

EMC Electronic Magnetism Compatibility

Err Temperature error

ESF Electronic Static Filter

FCS Fixed Comp Current Sensor

FCT Filter Clean Time

FS Fixed Speed

GS Gas Side

GW Gateway

HBS HomeBus

HE Heating Element

HGS Hot Gas Side

HGV Hot Gas Valve

HMI Human Machine Interface

HP Horse Power

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HPS High Pressure Sensor

HPV High Pressure Valve

HRS Heat Recovery System

HRV Heat Recovery Ventilation

HW Hard Ware

IC Integrated Circuit

ICIT Indoor Coil Inlet Temperature

ICMT Indoor Coil Medium Temperature

ICOT Indoor Coil Outlet Temperature

IDU Indoor Unit

IFAN Indoor Fan

I-FEEL I-Feel function

ION Ionizer

IR Infra-Red

IRD Infra Red for Ducted

IT Installation Test

ITEST Installation test for ODU/IDU address setting

LCD Liquid Crystal Display

LHHL Leave Home high limitation

LHLL Leave Home low limitation

LPS Low Pressure Sensor

LPV Low Pressure Valve

LS Liquid Side

LTEST Lab test

LV Liquid Valve

LWC Local Wired Controller

LWCS Local Wired Controller Simplified

MB Main Board

MCU Micro Controller Unit

NA Not Application

NMMT Night mode modify temperature

OAT Outdoor Air Temperature

OCIT Outdoor Coil Inlet Temperature

OCMT Outdoor Coil Medium Temperature

OCOT Outdoor Coil Outlet Temperature

ODB Outdoor Fan Driver Board

ODU Outdoor Unit

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OFAN Outdoor Fan

OPT Optimization function

OS Oil separator

PA Physical Address

PB Power Board

PC Private Computer

PS Power Supply

PTEST Production line test

R/C Remote Controller

RAT Room Air Temperature

RC Reverse Cycle (Heat Pump)

RCT Remote Control Temperature

RPS Rounds per second (mechanical frequency)

RTC Real Time Clock

RV Reverse Valve

S_ Seg Seven Segment Display

SB,STBY Stand By

SH Supplementary Heater

SPI Serial Peripheral Interface

SPL Set Point Limiting function

SPR Set Point Reset function

SPT Set Point Temperature

STEST Self test

SW Soft Ware

TBD To Be Defined

TCC Temperature Compensation Configuration

TEMP Temperature

TMR Timer

UA user address

UART Universal Asynchronous Receiver / Transmitter

VRF Variable Refrigerant Flow

WB Wet Ball

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Part I Product Outline

1 VRF SYSTEM OUTLINE........................................................................................................................................................8

2 PRODUCT MODEL INTRODUCTION.................................................................................................................................9

3 VRF SYSTEM PROJECT DESIGN......................................................................................................................................13

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1 VRF system outline

The VRF conditioner system independently designed by Airwell is multi commercial inverter conditioner system,

which has the characteristics of free combination, intelligent control, good performance and convenient installation.

In modern society, the quality of the houses and office buildings are better and better. The expansibility and

performance for the conditioner system are more important; people also need live and work in a comfortable and health

environment to remove the pressure of modern competitory society.

To satisfy these commands, Airwell design the VRF conditioner system independently. We believe , the conditioner

system will supply a high quality of air environment for the people to enjoy the quiet and comfortable life, and it also

inject the energy to the product of Airwell group which apply itself to the conditioner career for 60 years.

The configuration of the VRF system

Main bus: the communication wire between the Outdoor unit and Indoor unit

Local bus: the communication wire between the Indoor unit and the local wired controller

Tubing

Main bus

Local bus

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2 Product model introduction

2.1 Indoor unit model

Indoor unit Indoor Unit Capacity (KBTU/h)

Type Model Name Model

Dimensions

[W×H×D]

007 009 012 015 018 021 024 030 036 048

578×578×219 ● ● ●

CKV

578×578×270 ● ●

840×840×230 ● ●

Cassette

KXV

840×840×300 ● ●

820×630×190 ● ● ●

Floor /

Ceiling

SXV

1200×630×190 ● ● ● ●

750×200×630 ● ● ● ●

DLV

1050×200×630 ● ● ●

790 ×256 ×749 ● ● ●

Ducted

DSV

854×297× 816 ● ●

810× 285 ×210 ● ● ●

Wall

Mounted

PNV

1060×295×221 ● ● ●

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2.2 Outdoor unit model

Model name YAV112 YAV140

HP 4 5

KBTU/h 38.2 47.8

Dimensions[W×H×D] 950×1277×340

Number of max connectable indoor units 6 8

Max. allowable indoor/outdoor capacity ratio 51-130%

Figuration

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2.3 Controller components

Operation system

Individual control

systems

Centralized control systems Receiver

Needs

Indoor unit remote

controller

Operation with

various function

from center

station

Simple edition

of LWC

For RC use in

ducted unit

External appearance

Model name RC3i-1 RC7i-1 LWC LWCS IRD

Number of indoor units which

can be controlled

No limit No limit

1~16 group, up

to 16 units

1 group, up to

16 units

1 unit

Use limitations

The remote

length limit

to 8 m

The remote

length limit

to 8 m

The wiring length

limit to100 m

The wiring

length limit to

100 m

The wiring

length limit to

100m

Connectable types of indoor

unit

6 6 6 6 2

ON/OFF ● ● ● ● ●

Operation Mode ● ● ● ● ●

Temperature setting ● ● ● ● ─

Fan speed ● ● ● ● ─

Ionizer ● ● ● ─ ─

ESF

1

● ● ● ─ ─

Fresh air ● ● ● ─ ─

Ventilation mode

( HRV

2

unit)

─ ─ ● ─ ─

Vertical Louver ● ● ● ● ─

Horizontal Louver ● ● ● ─ ─

Sleep ● ● ● ─ ─

I-feel ● ● ●(Dip switch) ●(Dip switch) ─

Function

I-feel display ● ● ●TM ●TM ─

1

ESF: Electrostatic Filter

2

HRV: Heat recovery

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2.4 Product naming introduction

Indoor unit

‘

Outdoor unit

YA V 140

Front discharging multi variable air conditioning

Var iabl e

10 times of unit’s capacity(KW)

PN V 012

PN: Wall mounted type; CK: Slim cassette type; KX: Cassette type;

DL: Slim ducted type; DS: Ducted type; SX: Floor and ceiling type

Var iabl e

Unit’s capacity(KBTU/h)

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3 VRF system project design

3.1 System working temperature range

The MINI VRF system can work at very low temperatures in cool and heat modes. The work range is just as the

table below:

Indoor Outdoor

Mode Range

DB [℃] WB [℃] DB [℃] WB [℃]

Upper Limit 32 23 46 -

Cooling

Lower Limit 21 15 -10 -

Upper Limit 27 - 24 18

Heating

Lower Limit 10 - -15 -16

Table 3-1

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3.2 Design flow

Below is the flow of cooperation between the VRF conditioner system design and construction project :

Calculate the cooling and heating capacity

requirement for every room

Installing iron bracket and supply the

power source

Structure project VRF conditioner system design

Confirm the outdoor unit installed

location and indoor unit installed room

Project cooperation meeting

Select the indoor units for every room

According the capacity correction curve, ensure whether the indoor units satisfy the requirement

of the room, if not, refresh select the indoor units, if yes, continue the next step

Define the final system diagram, controller wiring diagram and refrigerant pipe system

Confirm the outdoor unit type

Install indoor units

Install refri

g

erant

p

i

p

e and condensin

g

water

p

i

p

e

Finish the Insulation

p

ro

j

ect and electricit

y

p

ro

j

ect

Vacuum and leak test

Charge the additional refrigerant

Testing operations

Finish all the project design

Install outdoor unit

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3.3 Indoor units cooling capacity correction(based on indoor WB temp. and outdoor

DB temp.)

Chart 3-1

Chart 3-2

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3.4 Indoor units heating capacity correction(based on indoor DB temp and outdoor

WB temp.)

Chart 3-3

Chart 3-4

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3.5 Correction factor for outdoor unit defrosting

Outdoor unit heating capacity correction coefficient during defrosting:

Outdoor intake

air temp. ( ℃

WB RH85%)

-15 -10 -8 -6 -5 -4 -2 -1 0 1 2 3 4 5 6

Correction

coefficient

0.97 0.97 0.96 0.94 0.91 0.89 0.87 0.87 0.87 0.88 0.89 0.91 0.92 0.95 1.0

To calculate the heating capacity with consideration for frosting /defrosting operation, multiply the heating capacity

found from the capacity graph by the correction coefficient form the table above.

Table 3-2

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3.6 Correction factor according to piping equivalent length

Cooling mode:

Heating mode:

Chart 3-5

Chart 3-6

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3.7 Correction factor for indoor units capacity/outdoor capacity ratio

Chart 3-7

Chart 3-8

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3.8 Piping length and elevation limitation

Ranges that apply to refrigerant tubing lengths and differences in installation heights

Items Marks Contents Length(m)

Actual tubing length ≤150

L1 Max. tubing length

Equivalent tubing length ≤175

△L(L2-L3)

Difference between the max. length and the min. length

from the No.1 distribution joint

≤40

l1,l2~ln Max. length of each distribution tube ≤30

Allowable

tubing

length

l1+l2+~ln-1+L1

Total max. tubing length including length of each

distribution tube(only narrow tubing)

≤200

When outdoor unit is installed higher than indoor unit ≤50

H1

when outdoor unit is installed lower than indoor unit ≤40

Allowable

elevation

difference

H2 Max. difference between indoor units ≤15

L2 – Maximum tubing length from the first distribution

L3 – Minimum tubing length from the first distribution

Chart 3-9

Table 3-3

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Airwell DSV036 Engineering Manual

Airwell DSV036 Engineering Manual

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