Panasonic CS-A281KR User manual

Order No: MAC011105AC3
Room AirConditioner
CS-A281KR.CU-A281KR
2001 Matsushita Air-Conditioning Corp. Sdn. Bhd. (183914D)All
rights reserved. Unauthorized copying and distribution isa
violation of law.
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1. Features
-High Efficiency
-High EfficiencyAirflow Circuit
-Compact Design
-Soft Starter Current
-Auto Restart after Power Failure
-Long Piping up to 30m
-CatechinDeodorizing AirFilter
-Deodorizing Control during operation
-Colddraught Control
2. Functions
3. Product Specifications
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Unit CS-A281KR CU-
A281KR
Cooling Capacity kW
Btu/h 8.00 - 7.92 27,300 - 27,000
Heating Capacity kW
Btu/h 8.40 - 8.35 28,700 - 28,500
Moisture Removal l/h
Pint/h 3.7 7.8
PowerSource Phase
V
Cycle
Single
240 - 230
50
AirflowMethod OUTLET
INTAKE
SIDE VIEW TOP
VIEW
AirVolume IndoorAir(Lo) m3/min
(cfm) Cooling; 14.2 (501) —
Heating; 15.6 (551)
IndoorAir(Me) m3/min
(cfm) Cooling; 15.0 (530) —
Heating; 16.4 (579)
IndoorAir(Hi) m3/min
(cfm) Cooling; 16.3 (575) —
Heating; 17.7 (625)
OutdoorAir m3/min
(cfm) —Cooling; 59.0 (
2,083)
Heating; 59.2 (
2,090)
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Noise Level dB (A) Cooling; 48/46/44 Cooling; 63
/
Heating; 48/44 Heating; 63
/
Electrical DataInput kW Cooling; 2.65 -2.62
Heating; 2.90 - 2.88
Running Current A Cooling; 12.0 - 12.2
Heating; 13.2 - 13.2
COP W/W Cooling; 3.02 - 3.02
Heating; 2.90 - 2.90
Starting Current A 43
Piping Connection Port
(Flare piping) inch inch G ; Half Union 5/8” L; Half Union 1/4” G ; 3-way
valve
L; 3-way
valve
Pipe Size
(Flare piping) inch inch G (gas side); 5/8” L(liquidside); 1/4” G (gas side);
5
L(liquidside)
;
Drain
Hose Innerdiameter mm 14 — Length m 0.73 —
PowerCordLength
Numberof core-wire m2.1 3 (2.5 mm2)— —
Dimensions Height inch(mm) 14 - 9/16 (370) 26 - 31/32 (
685)
Width inch(mm) 48 - 1/32 (1,220) 34 - 21/32 (
880)
Depth inch(mm) 8 - 21/32 (220) 13 - 19/32 (
345)
Net Weight lb(kg) 40 (18) 154 (70)
Compressor Type — Scroll
type
Motor Type — Induction (2-
poles)
Rated Output kW — —
AirCirculation Type Cross-flowFan Propeller
Fan
Material AS + Glass Fiber30% AS + Glass
Fiber
Motor Type Induction (4-poles) Induction (4-
poles)
Input W — —
Rated Output W 40 100
Fan
Speed Low rpm Cooling; 1,262 Heating; 1,250 920 - 880
Medium rpm Cooling; 1,322 Heating; 1,328 —
High rpm Cooling; 1,418 Heating; 1,420 1,200 -
1,170
Heat
Exchanger Description Evaporator
Condenser
Tube material Copper Copper
Finmaterial Aluminium
Aluminium
FinType Louver Louver
Row/ Stage (Plate finconfiguration, forceddraft)
2 × 10 2 × 26
FPI 18 18
Size (W × H × L) mm 966.5 × 254 × 44 826 × 663.9
×
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Refrigerant Control Device — Capillary
Tube
Refrigeration Oil (cm3)— SONTEX
200 LT (
1,242)
Refrigerant (R-22) g(oz) — 1,800 (
63.5)
Thermostat Electronic Control Electronic
Control
Protection Device InnerProtector Inner
Protector
CapillaryTube Length mm — Cooling; 850,
Heating
FlowRate l/min — Cooling; 21.8,
Heating
2 ATM)
InnerDiameter mm — Cooling; 2.0,
Heating
AirFilter Material
Style A.B.S Honeycomb —
CompressorCapacitor F, VAC —50 F,
370VAC
FanMotorCapacitor F, VAC 2.0 F, 450VAC 3.0 F,
450VAC
-Specifications are subject to change without notice for further
improvement.
4. Dimensions
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5. Refrigeration Cycle Diagram
6. Block Diagram
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7. Wiring Diagram
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8. Operation Details
8.1. Cooling Mode Operation
Cooling inoperation according toRemote Control setting.
Time DelaySafetyControl (3 minutes)
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-When the compressor isstopped byPower Switch, Remote
Control or there isapower failure, itrestarts after 3minutes when
the Power Switch, Remote Control isturned ONor the power
supplyisresumed.
-When the setting temperature isreached during cooling operation,
the compressor stops and itwill not start for 3minutes.
7 minutes Time SavedControl
-The compressor will start automaticallyifithas stopped for 7
minutes even ifthe room temperature isbelow the compressor ON
temperature.
Anti-Freezing Control
-Ifthe temperature of the indoor heat exchanger fallscontinuously
below 2°Cfor 4minutes, the compressor turns off to protect the
indoor heat exchanger from freezing. The fan speed setting
remains the same. /
-Compressor recommences when the indoor heat exchanger
temperature rises to 10°C(Recovery).
3minutes waiting of Time DelaySafetyControl is valid
for Cooling Operation.
Automatic FanSpeedMode
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WhenAutomatic FanSpeedis selectedat Remote Control during cooling operation.
-Fan speed rotates inthe range of Hi to Me.
-Deodorizing Control.
Cooling Operation Time Diagram
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8.2. Soft DryMode Operation
-The unitstarts cooling operation until the room temperature
reaches the setting temperature set on the Remote Control, and
then Soft Dryoperation will start.
-During Soft Dryoperation, the Indoor Fan operates with Lo speed.
-Once room temperature reaches below Soft DryOFF temperature,
Indoor Fan, Compressor and Outdoor Fan Stop for 6minutes.
Time DelaySafetyControl
-Once the compressor stops, itwill not start for 3minutes during
Cooling operation.
Anti-Freezing Control
-Same as Anti-Freezing Control for Cooling Mode operation. (For
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Soft Dryregion, 6minutes waiting isvalidduring compressor
stops.)
Automatic FanSpeedMode
When AutomaticFan Speed isselected at Remote Control during
Soft Dryoperation.
-Fan speed rotates at Lo speed.
-Deodorizing Control.
Soft DryOperation Time Diagram
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8.3. Heating Mode Operation
-Heating inoperation according to Remote Control setting.
Time DelaySafetyControl
-When the compressor isstopped byPower Switch, Remote
Control or there isapower failure, itrestarts after 3minutes when
the Power Switch, Remote Control isturned ONor the power
supplyisresumed.
-When the setting temperature isreached during heating operation,
the compressor stops and itwill not start for 4minutes.
30 minutes Time SavedControl
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-The compressor will start automaticallyifithas stopped for 30
minutes even ifthe room temperature isbelow the compressor
OFF temperature.
OverloadProtection Control
-Ifthe temperature of the Outdoor Heat Exchanger less than -3°C,
Outdoor Fan isON. The Outdoor Fan stop, when Outdoor Heat
Exchanger temperature isTbor more according to Outdoor Air
Temperature region as tablebelow:
During starting of Heating mode and after deice, Outdoor Fan ON
for 90 sec. (Hi).
-Ifthe Indoor heat exchanger becomes 68°Cor more, the
compressor will stop and restart automatically.
(Time DelaySafetyControl -4minutes waiting)
4-wayValve Control
-4-wayvalve ONduring Heating operation, except deicing operation.
-When the unitisswitched to “OFF” during Heating operation, 4-
wayvalve stayat Heating position for 5minutes.
Hot Start Control
When Heating operation starts, Indoor Fan will not start until the
indoor heat exchanger reaches 30°Cas diagram shown.
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Hot Start is completedwhenindoorheat exchangerreaches 42°C.
MaximumHot start duration = 4 minutes. After4 minutes, Hot start operation will be shiftedto
normal Heating operation.
Automatic FanSpeedMode
When AutomaticFan Speed isselected at Remote Control during
heating operation.
-Fan speed rotates inthe range of Hi SLo according to the heat
exchanger temperature.
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Heating Operating Time Diagram
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Deicing Control
Deice starts to prevent frosting at outdoor heat exchanger.
-Normal Deicing
Deice operations detection commences inHeating operation
starts or 60 minutes after previous deice operation. Ifthe outdoor
piping temperature drops to -4°Cfor 50 sec. continuouslyduring
compressor isinoperation, deice will start.
(There isno detection during Outdoor Fan stops.)
-Overload Deicing
During heating operation, ifthe outdoor Fan OFF duration (due to
overload control)isaccumulated up to 60 minutes and after
compressor starts for 1minute, deicing starts.
-Deicing ends when
(a) 12 minutes after deicing operation starts;
(b) The outdoor piping temperature rises to about 12°C.
-After deicing operation, compressor stops for 30 seconds and 4-
wayvalve staysat cooling position for 10 seconds.
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a) Normal Deicing Time Diagram
b) OverloadDeicing Time Diagram
8.4. AutomaticMode Operation
1. When the AutomaticMode Operation isselected, the indoor fan
operates at SLo fan speed for 20 seconds to sense intake air
temperature and determine the 1st operation mode.
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StandardforDetermining Operation Mode 1st Judgement
2. Operation mode will be determine againafter 1hour of operation,
ifthe room temperature reaches to set temperature and
compressor off time isover 7minutes 30 seconds continuously.
Indoor intake airisless than 16°C, Heating mode will
immediate operate. (onlyinthe first time judgement)
The present operation mode will be continued, ifthe room
temperature does not reach to set temperature (Compressor
keeps running) eventhough after 1hour from automaticoperation
mode started.
For 2nd judgement onwards, indoor fan will operate for 20
seconds to sense the intake airtemperature for determining
operation mode.
StandardforDetermining Operation Mode 2nd Judgement
onwards
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