Airwell VAR 9 User manual

VAR Series
REFRIGERANT
R410A
COOLING ONLY
Heating (by an heating element)
AUGUST – 2008
Unit Description
Consol VAR 9 R410A
SM VAR 1-A.1 GB
CONTENT

A
LIST OF EFFECTIVE PAGES
SM VAR 1-A.1 GB
LIST OF EFFECTIVE PAGES
Note: Changes in the pages are indicated by a “Revision#” in the footer of each effected page
(when none indicates no changes in the relevant page). All pages in the following list represent
effected/ non effected pages divided by chapters.
Dates of issue for original and changed pages are:
Original ....... 0 ........ May 2006
Total number of pages in this publication is 54 consisting of the following:
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Title ....................... 1
A ........................... 1
i............................. 1
1-1 ........................ 1
2-1 ........................ 1
3-1 ........................ 1
4-1 ........................ 1
5-1 - 5-2 ................ 1
6-1 ........................ 1
7-1 ........................ 1
8-1 ........................ 1
9-1 ........................ 1
10-1-10-2 .............. 1
11-1-11-36............. 1
12-1-12-3 .............. 1
Appendix -A ...........1
• Zero in this column indicates an original page.
*Due to constant improvements please note that the data on this service manual can be modified with out notice.
**Photos are not contractual
CONTENT

i
TABLE OF CONTENTS
SM VAR 1-A.1 GB
Table of Contents
1. INTRODUCTION ...................................................................................................1-1
2. PRODUCT DATA SHEET......................................................................................2-1
3. RATING CONDITIONS..........................................................................................3-1
4. OUTLINE DIMENSIONS .......................................................................................4-1
5. PERFORMANCE DATA & PRESSURE CURVES ................................................5-1
6. SOUND LEVEL CHARACTERISTICS ..................................................................6-1
7. ELECTRICAL DATA..............................................................................................7-1
8. WIRING DIAGRAMS .............................................................................................8-1
9. REFRIGERATION DIAGRAMS.............................................................................9-1
10. TROUBLESHOOTING ..........................................................................................10-1
11. CONTROL SYSTEM .............................................................................................11-1
12. EXPLODED VIEWS AND SPARE PARTS LISTS.................................................12-1
13. APPENDIX A .........................................................................................................13-1
CONTENT

1-1
INTRODUCTION
SM VAR 1-A.1 GB
1. INTRODUCTION
1.1 General
The new VAR consule unit is an ST (cooling only) and RH (Heating by electrical
element) model.
The new VAR consule is available as LED display types, featuring esthetic design,
compact dimensions, and low noise operation.
1.2 Main Features
The VAR series benefits from the most advanced technological innovations, namely:
•R410A models
• Microprocessor control.
• Back curve centrifugal fan , allowing low noise level operation.
• Easy installation and service.
• Compact dimensions.
1.3 Filtration
The console VAR series presents several types of air filters:
• Easily accessible, and re-usable pre-filters (mesh)
• Carbon and electrostatic filter (optional)
1.4 Control
The microprocessor indoor controller, supplied as standard, provide complete operating
function and programming. For further details please refer to the Operation Manual,
Appendix A.
1.5 Inbox Documentation
Each unit is supplied with its own installation and operation manuals.
CONTENT

2-1
PRODUCT DATA SHEET
SM VAR 1-A.1 GB
Model (Indoor & Outdoor) Unit VAR 9 ST/RH
Characteristics Units Cooling Heating
(by heater)
Capacity (1) Btu/hr 8530 -
kW 2.5 -
Power input (1) kW 0.92 2x0.75
COP (1) W/W 2.61 -
Energy efficiency class A -
Power supply V/ Ph /Hz 230 / 50 / 1
Rated current A 4.2 6.7
Starting current A 18.7
Circuit breaker rating A 10
INDOOR
Fan type & quantity Centrifugal x 1
Fan speeds H/ M/ L RPM 940 / 845 / 760
Air flow H/ M/ L m³/hr 400 / 360 / 315
Sound pressure level (2) H/ M/ L dB(A) 47 / 44 / 42
Sound power level H/ M/ L dB(A) 56 / 53 / 51
Moisture removal L/hr 1
Condensate drain tube I.D mm 9
Dimensions W/ H / D mm 1110 382 240
Weight kg 42
Package dimensions W/ H / D mm 1160 460 335
Packaged weight kg 45
Units per pallet Units 12
Stacking height Units 2
OUTDOOR
Refrigerant control Capillary
Compressor type, model Rotary
Fan type & quantity Centrifugal x 1
Fan speeds H RPM 1300
Air flow H m³/hr 358
Refrigerant type R410A
Refrigerant charge kg 0.66
Operation control type Touch panel
Heating elements kW 2x0.75
Others
(1) Rating conditions in accordance to ISO 5151 and ISO 13253 (for ducted units).
(2) Sound pressure level measured at 1-meter distance from unit.
2. PRODUCT DATA SHEET
2.1 Model: VAR 9 ST/RH
CONTENT

3-1
RATING CONDITIONS
SM VAR 1-A.1 GB
3. RATING CONDITIONS
Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units).
Cooling:
Indoor: 27oC DB 19oC WB
Outdoor: 35 oC DB
3.1 Operating Limits
Indoor Outdoor
Cooling Upper limit 32oC DB 23oC WB 43oC DB
Lower limit 21oC DB 15oC WB 21oC DB
Voltage 1PH 208 – 243 V
CONTENT

4-1
OUTLINE DIMENSIONS
SM VAR 1-A.1 GB
4. OUTLINE DIMENSIONS
4.1 Model: VAR 9 ST/RH
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CONTENT

5-1
PERFORMANCE DATA & PRESSURE CURVES
SM VAR 1-A.1 GB
5. PERFORMANCE DATA & PRESSURE CURVES
5.1 Model: VAR 9 ST/RH
5.1.1 Cooling Capacity (kW) Cooling Mode
230V : Indoor Fan at High Speed.
Entering Air DB
OD Coil(oC) Data Entering Air WB/DB ID Coil(oC)
15/21 17/24 19/27 21/29 23/32
15
TC 2.66 2.75 2.82 2.88 2.93
SC 1.72 1.80 1.87 1.91 1.95
PI 0.69 0.69 0.69 0.69 0.70
20
TC 2.57 2.71 2.79 2.86 2.92
SC 1.69 1.78 1.86 1.91 1.94
PI 0.75 0.75 0.75 0.76 0.76
25
TC 2.43 2.63 2.76 2.84 2.91
SC 1.65 1.75 1.84 1.89 1.93
PI 0.81 0.81 0.82 0.82 0.83
30
TC 2.27 2.48 2.67 2.77 2.85
SC 1.59 1.69 1.80 1.85 1.89
PI 0.87 0.88 0.89 0.90 0.91
35
TC 2.11 2.28 2.52 2.65 2.77
SC 1.52 1.63 1.76 1.81 1.85
PI 0.94 0.95 0.97 0.98 0.98
40
TC 1.91 2.08 2.27 2.49 2.61
SC 1.43 1.54 1.67 1.72 1.75
PI 1.01 1.03 1.05 1.06 1.07
LEGEND
TC – Total Cooling Capacity, (kW)
SC – Sensible Capacity, (kW)
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OD – Outd
OU – Outdoor
(1) Marked area is below standard operating limits.
CONTENT

5-2
PERFORMANCE DATA & PRESSURE CURVES
SM VAR 1-A.1 GB
5.2 Pressure Curves
5.2.1 Cooling
Suction Pressure VS.Outdoor Temp
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
15 20 25 30 35 40
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
15 20 25 30 35 40
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
CONTENT

6-1
SOUND LEVEL CHARACTERISTICS
SM VAR 1-A.1 GB
6. SOUND LEVEL CHARACTERISTICS
6.1 Sound Pressure Level
6.2 Sound Pressure Level Spectrum
Room 2
Room 1
0.9M
1.12M
Microphone
A/C JKF 9
Middle of Filter
1.0M
FAN SPEED LINE
HI
ME
LO
CONTENT

7-1
ELECTRICAL DATA
SM VAR 1-A.1 GB
7. ELECTRICAL DATA
7.1 Single Phase Units
MODEL Console 9
Power Supply 1PH-230V-50Hz
Max Current, A 6
Circuit Breaker,A 10
Power Supply Wiring
(No. X Cross Section, mm2 )3x1.5
*Interconnecting Cable RC
Model (No. X Cross Section, mm2)N/A
*Interconnecting Cable ST
Model (No. X Cross Section, mm2)N/A
*Already connected on factory as standard
NOTE
Power wiring cord should comply with local lows and electrical
regulations requirements.
CONTENT

8-1
WIRING DIAGRAMS
SM VAR 1-A.1 GB
8. WIRING DIAGRAMS
8.1 Model: VAR 9 ST/RH
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CONTENT

9-1
REFRIGERATION DIAGRAMS
SM VAR 1-A.1 GB
9. REFRIGERATION DIAGRAMS
9.1 VAR 9 ST/RH Cooling Only
Capillary
tube
Condenser
Filter
Evaporator
rosserpmoC
port
Service
Sensor
CONTENT

10-1
TROUBLESHOOTING
SM VAR 1-A.1 GB
10. TROUBLESHOOTING
No. SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
1
Power supply indicator
(Red LED) does not light
up.
No power supply.
Check power supply. If power
supply is OK, check display
and display wiring, if OK,
replace PCB.
2Indoor fan does not start
(Green LED lights up).
1. PCB problem
2. Capacitor
3. Fan motor
1. Switch to HIGH speed and
check indoor FAN motor
voltage to be higher then
198VAC, please also make
sure ther is no obstical
jamming the fan in this case
remove it.
In case that the voltage
is it’s significanly lower
replace PCB.
2. In case the fan is not
blocked and the voltage is
ok Replace the indoor fan
capacitor
3. If it still want run replace
the indoor fan motor
3Indoor fan works when unit
is OFF. PCB problem. Replace controller.
4Compressor does not
start.
Electronics control
problem or protection.
Perform diagnostics, and
follow the actions described
below.
5
Compressor stops during
operation and Green LED
remains on.
1.OK temperature is in
set point
2.Electronic control or
power supply problem.
1.OK
2. Perform diagnostics, and
follow the actions described
below.
6Compressor is ON but
outdoor fan does not work.
1. OK, unit is in High
pressure protection
2. PCB Problem or
outdoor fan capacitor/
motor.
1. OK
2. Switch unit to COOL mode,
HIGH speed with 16°C set
point (cooling) . Check outdoor
motor power supply voltage to
be higher than 198 VAC. If OK
replace capacitor, if it still wont
run replace motor.
In case the voltage is lower
then 198 VAC replace and the
main poer supply is higher
replace PCB.
CONTENT

10-2
TROUBLESHOOTING
SM VAR 1-A.1 GB
7
All components are
operating properly but no
cooling.
Refrigerant leak. Check refrigeration system.
8
All components are
operating properly but no
heating.
Control problem or
Heater problem.
Check heaters power supply
if higher than 198 VAC. If OK
replace heaters, if heaters
power supply if lower than 198
VAC replace PCB.
9
One of the protections is
activated and compressor
is stopped with no
apparent reason.
Control problem or
refrigeration system
problem.
Perform diagnostics to detect
active protection, and take
action accordingly.
10 Water leakage from indoor
unit.
Indoor unit drainage tube
is blocked.
Check and open drainage
tube.
11 Filter LED comes ON after
512 hours of operation
Indication time to clean
the air filter
clean air-filter. Press the
RESET button.
CONTENT

CONTROL SYSTEM
11-1SM VAR 1-A.1 GB
11. CONTROL SYSTEM
11.1 Electronic Control
11.1.1 Introduction
The electronic control information is designed for service applications, and is common
to the following groups of air-conditioners:
xST/RC group -Cooling only / cooling and heating by heat pump.
xSH group -Cooling and heating by heat pump and supplementary
heater.
xRH group -Cooling, heating by heaters only.
11.1.2 Model Plug Settings
Before installation, make sure to set the model plug conforming to the suitable group.
GROUP J6 Setting J2 Setting
ST / RC Open Open
SH Closed Open
RH Closed Closed
Model Plug
Group location of the jumpers
VAR RH
J2J6J8J3J4J5J7J1
CONTENT

CONTROL SYSTEM
11-2 SM VAR 1-A.1 GB
11.1.4 Main PCB Controller
CONTENT

CONTROL SYSTEM
11-3SM VAR 1-A.1 GB
11.1.5 Display Board :LEXAN
11.1.6 Display Board : Assembly
11.1.7 Legend :
DIJKPQ
HO
N
M
L
G
F
EC
B
A
heat cool
mode reset
18 20 22 24 26 28 30 H MLA
A) HEATING
Lights on during operation. Heating and filtration of the
air in the room. Sustainment of required ambient
temperature.
B) COOLING
Lights on during operation. Cooling, dehumidification
and filtration of the air in the room. Sustainment of
required ambient temperature.
C) VENTILATION
Lights on during operation. The unit is running in
ventilation mode only.
D) MODE Button
Pressing the button changes unit function between
COOL – HEAT – FAN.
E) POWER
Lights on as soon as the unit is energized.
F) PROGRAMMING
Comes on during operation. Flashes to indicate that the
remote control signal has been received and stored in
the memory (applicable with remote control only).
G) FILTER
Comes on when the air filter needs to be cleaned. After
cleaning and re-installation of the filter, the system must
be reset (RESET button).
H) TEMPERATURE
Set temperature display
18 lights - 18ºC
18 & 20 lights - 19ºC
20 lights - 20ºC
I) TEMPERATURE SET DECREASE
Each pressing decreases set temperature by º1C.
J) TEMPERATURE SET INCREASE
Each pressing increases set temperature by º1C.
K) FAN
Each pressing changes fan speed MEDIUM – LOW –
AUTO.
L) FAN
H – High speed
M) FAN
M – Medium speed
N) FAN
L – Low speed
O) FAN
A – Automatic
P) RESET
Press to switch off the indicator light and activate the
filter function, after cleaning and re-installing the filter.
Press to cancel the audible warning.
Q) ON/OFF
Unit On/Off button.
CONTENT

CONTROL SYSTEM
11-4 SM VAR 1-A.1 GB
11.2 Control Function
11.2.1 Abbreviations
AC - Alternate Current
A/C - Air-Conditioner
ANY - ON or OFF status
CLOCK - ON/OFF Operation Input, (dry contact)
COMP - Compressor
CPU - Central Processing Unit
CTV - Compensation Temperature Value
HE - Heating Element
HPC - High Pressure Control
H/W - Hardware
ICP - Indoor Condensation Pump
ICT - Indoor Coil Temperature (RT2) sensor
IF, IFAN - Indoor Fan
IR - Infrared
LEVEL1 - Normal Water Level
LEVEL2/3 - Medium/High Waterlevel
LEVEL4 - Overflow Level
Max - Maximum
Min - Minimum
min - Minute (time)
NA - Not Applicable
OCP - Outdoor Condensation Pump
OCT - Outdoor Coil Temperature (RT3) sensor
OF, OFAN - Outdoor Fan
OPER - Operate
Para. - Paragraph
RAT - Return Air Temperature (RT1) sensor
RC - Reverse Cycle (Heat Pump)
R/C - Remote Control
RCT - Remote Control Temperature
RH - Resistance Heater
RT - Room Temperature (i.e. RCT in IFEEL mode, RAT otherwise)
RV - Reversing Valve
SB, STBY - Stand-By
sec - Second (time)
Sect - Section
SH - Supplementary Heater
SPT - Set Point Temperature
ST - Standard (Model with Cooling Only)
S/W - Software
TEMP - Temperature
W/O - Without
'T - The difference between SPT and RT.
in Heat Mode: 'T = SPT - RT
in Cool/Dry/Fan Mode: 'T = RT – SPT
CONTENT

CONTROL SYSTEM
11-5SM VAR 1-A.1 GB
11.3 General Functions
11.3.1 COMP Operation
a. For each Mode including POWER OFF & SB, a Min time delay of 3 min before
COMP restarting, excluding DEICING Mode (see para. 14.12.2).
b. The Min operation time of COMP under different operating conditions is:
Operation Mode Min Operation Time of COMP
Heat, Cool, HP protection or Auto Modes 3 min.
Fan, Dry, Overflow, Protection Modes, or Mode Change Ignored
11.3.2 IFAN operation
a. Min time interval between IFAN speed change in AUTOFAN Mode is 30 sec.
b. Min time interval between IFAN speed change in H/M/L Mode is 1 sec.
c. IFAN speed in Heat/Cool AUTOFAN Mode is determined according to the
following chart:
T [oc]
L
M
H
IFAN speed
3142
Where in Heat Mode: 'T = SPT - RT
in Cool Mode: 'T = RT- SPT
11.3.3 OFAN Operation
Min time interval between OFAN ON/OFF state changes is 30 sec.
11.3.4 HE Operation
a. Min Heaters ON or OFF time is 30 sec.
b. Heaters can never be in operation while IFAN is OFF.
c. In RH group, HE-1 and HE-2 will be activated only when COMP is not operating,
except in Dry Mode.
CONTENT