MAXA BDS28A User manual

TECHNICAL MANUAL 2013

SPLIT MONO DC INVERTER

MODELS

BDS28A

BDS35A

This manual has been created for informative purpose. The company declines every responsibility for the results of projecting or installation based on the explanations and the technical specifications given

in this manual. Is besides forbidden the reproduction under any form of the texts and of the figures contained in this manual.

Serie / Series / Serie / Serie

TECHNICAL MANUAL

MONO DC INVERTER

Emissione / Issue

Ausgabe / Emission

04 - 2013

Catalogo / Catalogue / Katalog / Catalogue

MTE01028D2505-00

Sostituise / Supersade

Ersetzt / Remplace

Index

1. SPECIFICATIONS ......................................................................................................................................4

2. CHARACTERISTICS DATA........................................................................................................................6

2.1 Operation characteristic curve ..................................................................................................................6

2.2 Capacity variation ratio according to temperature ....................................................................................6

2.3 Noise criteria curve ...................................................................................................................................6

2.4 Operation data ..........................................................................................................................................6

3. DIMENSIONS ...........................................................................................................................................7

3.1 Indoor units ...............................................................................................................................................7

3.2 Outdoor units ............................................................................................................................................7

4. REFRIGERANT DIAGRAM ......................................................................................................................8

5. ELECTRICAL CIRCUIT DIAGRAM ...........................................................................................................9

5.1 Indoor units ...............................................................................................................................................9

5.2 Outdoor units ............................................................................................................................................9

6. PRINTED CIRCUIT BOARD.....................................................................................................................10

6.1 Indoor units .............................................................................................................................................10

6.2 Outdoor units ..........................................................................................................................................10

7. CONTROL FUNCTIONS .........................................................................................................................11

7.1. Temperature parameters .......................................................................................................................11

7.2. Basic functions.......................................................................................................................................11

8. TROUBLESHOOTING ............................................................................................................................15

8.1 Malfunction diagnosis should be performed as below procedure...........................................................15

8.2 Confirmation ...........................................................................................................................................15

8.3 Flashing LED of Indoor/Outdoor unit and primary judgement ................................................................16

8.4. How to check simply the main parts ......................................................................................................21

Appendix 1: form for indoor/outdoor unit’s ambient sensor numerical value of resistance .........................32

Appendix 2: form for indoor/outdoor unit’s tube temperature sensor numerical value of resistance ..........33

Appendix 3: form for indoor/outdoor unit’s air exhaust temperature sensor numerical value of resistance..34

1. SPECIFICATIONS

Models of indoor units BDS28A BDS35A

Rated voltage 220-240V ~50Hz

kW 2,5(0,7 ~ 4,4) 3,5(0,7 ~ 4,5)

Total capacity Btu/h 8,53(2,3 ~ 15,00) 11,9(2,3 ~ 15,3)

Power input W 520 900

Rated current A 2,3 4,0

Cooling

S.E.E.R. W/W 7,5-A++ 7-A++

kW 2,7(0,7 ~ 4,8) 3,5(0,7 ~ 5,5)

Total capacity Btu/h 9,3(2,4 ~ 16,3) 12,4(2,4 ~ 18,7)

Power input W 565 895

Rated current A 2,37 7,5

Heating

S.C.O.P. W/W 4,6 – A++ 4,6 – A++

Air flow volume (SH/H/MH/M/ML/L/SL) m³/h 730/670/610/530/460/410/380 770/670/610/530/460/410/380

Dehumidifying volume l/h 0,8 1,4

Fan motor cooling speed (Max - Min) r/min 1300/1050/1000/900/800/700/500 1350/1070/1000/900/800/700/500

Fan motor heating speed (Max - Min) r/min 1300/1150/1080/1030/980/900/850 1350/1150/1080/1030/980/900/850

Output of fan motor W 15 15

Fan motor capacitor μF / /

Fan motor RLA A 0,07 0,07

Fan type - piece Cross flow - 1 Cross flow - 1

Diameter x length mm Φ98 x 662 Φ98 x 662

Evaporator type Aluminium Fin-copper Tube

Pipe diameter mm Φ7 Φ7

Row-fin gap mm 2-1.5 2-1,5

Evaporator

Coil length x height x width (l x H x L) mm 662 x 25,4 x 305 662 x 25,4 x 305

Swing motor model MP24HA/MP24HB/MP24HC MP24HA/MP24HB/MP24HC

Output of swing motor W 2,4 2,4

Fuse A 3,15 3,15

Sound pressure level dBA 36/32/21 36/32/21

Sound power level dBA 46/42/31 46/42/31

Dimension (W/H/D) mm 866 x 292 x 209 866 x 292 x 209

Dimension of package (W/H/D) mm 945 x 377 x 297 945 x 377 x 297

Indoor unit

Net weight/gross weight kg 11/14 11/14

Models of outdoor units BDS28A BDS35A

Compressor manufacturer/trademark SANYO

Compressor model C-6RZ110H1A C-6RZ110H1A

Compressor oil FV50S FVC 68D / RB 68EP

Compressor type ROTARY ROTARY

L.R.A. A 33,00 33,00

Compressor RLA A 4,59 4,59

Compressor power input W 800 800

Overload protector 1NT11L-3979 1NT11L-3979

Throttling method Electronic expansion valve

Starting method 16°C ~ 30°C

Working temperature range (°C) -20°C ~ 48°C

Condensor type Aluminium Fin-copper Tube

Pipe diameter mm Φ7,94 Φ7,94

Rows-fin gap mm 2,5-1,5 2,5-1,5

Condenser

Coil length (l) x height (H) x width (L) mm 763 x 57 x 550 730 x 38.1 x 508

Fan motor speed rpm 850/750/600 850/750/600

Output fan motor W 40 40

Outdoor unit

Fan motor RLA A 0,23 0,23

Fan motor capacitor μF / /

Air flow volume of outdoor unit m³/h 2000 2000

Fan type-piece Axial-flow

Fan diameter mm Φ445 Φ445

Defrosting method Automatic Defrosting

Climate type T1 T1

Isolation I I

Moisture protection IP24 IP24

Permissible excessive operating pressure

for the dischar

e side Mpa 3,8 3,8

Permissible excessive operating pressure

for the suction side Mpa 1,2 1,5

Sound pressure level dB(A) 49/-/- 50/-/-

Sound power level dB(A) 59/-/- 60/-/-

Dimensions (WXHXD) mm 906 x 596 x 378 906 x 596 x 378

Dimension of package (L/W/H) mm 948 x 420 x 645 348 x 420 x 645

Net weight/gross weight kg 43/47 43/47

Refrigerant charge (R410A) kg 1,3 1,3

Length m 5 5

Gas additional charge g/m 20 20

Liquid pipe mm Φ6 Φ6

Outer diameter Gas pipe mm Φ9,52 Φ9,52

Height m 10 10

Connecting pipe

Max distance Length m 15 20

The above data of specifications are subject to change without prior notice. Please refer to the actual data specified on the nameplate of

the unit.

Note: Test conditions:

Indoor side state Outdoor side state

Standard condition Dry bulb temp. °C Wet bulb temp. °C Dry bulb temp. °C Wet bulb temp. °C

Rated cooling 27 19 35 24

Rated heating 20 15 7 6

3) Microphone at a distance of 1m from the unit.

Approximate calculation from Sound Pressure Level to Sound Power Level:

- Average Sound Pressure Level p

L=10*lg

[

]

21 *1.0*1.0 1010(*2/1 PP LL +.

L: Sound pressure level of front test point.

L: Sound pressure level of side test point for indoor unit 1P

L,2P

- Approximate Sound Power Lever W

L=p

L+10.

2. CHARACTERISTICS DATA

2.1 Operation characteristic curve

Cooling

505151 0 20 30 40 60 70 80 90020304060708090

Compressor speed (rps)

Current (A)

BDS35A

BDS28A

Heating

Compressor speed (rps)

Current (A)

Condition

Indoor:DB27 WB19

Outdoor:DB35 WB24

Indoor air flow: Super High

Pipe length: 5m

Condition

Indoor:DB20

Outdoor:DB7

Indoor air flow:Super High

Pipe length: 5m

2.2 Capacity variation ratio according to temperature

BDS35A BDS35A

BDS28A

33 35 37 39 41 43 45 -18 -14 -10 -6 -2 2 6 1

100

120

140

160

180

200

Outdoor temp.( )

Capacity ratio(%)

Condition

Indoor:DB27 WB19

Indoor air flow: Super High

Pipe length: 5m

100

120

140

160

180

200

Outdoor temp.( )

Capacity ratio(%)

gnitaeHgnilooC

Condition

Indoor:DB20

Indoor air flow:Super High

Pipe length: 5m

2.3 Noise criteria curve

BDS35A

BDS28A

Super High

Indoor fan motor rotating speed (rps)

tinUroodtuOtinUroodnI

Noise/dB(A)

Compressor speed (rps)

Noise/dB(A)

High Middle Low Quiet

0 8 20 30 40 50 60 70 80 90

2.4 Operation data

Cooling:

Temperature

conditions (°C)

Standard

pressure

Heat exchanger pipe

temp.

Indoor Outdoor

Model

name P(MPa) T1 (°C) T2 (°C)

Indoor fan speed Outdoor fan

speed

Compressor

revolution (rps)

BDS28A 34

27/19 35/24

BDS35A

0,9~1,2 In: 12~14

Out: 10~12

In: 41~43

Out: 43~45 Super high Super High

Heating:

Temperature

conditions (°C)

Standard

pressure

Heat exchanger pipe

temp.

Indoor Outdoor

Model

name P(MPa) T1 (°C) T2 (°C)

Indoor fan speed Outdoor fan

speed

Compressor

revolution (rps)

BDS28A 41

20/15 7/6

BDS35A

2,0~2,6 In: 33~35

Out: 42~44

In: 3~5

Out: 3~5 Super high Super high

Notes:

(1) Connecting piping condition: 5m.

(2) T1: Outlet and inlet pipe temperature of evaporator.

T2: Outlet and inlet pipe temperature of condenser.

P: Pressure of air pipe used for connecting outdoor and indoor units.

Notes:

(1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent.

(Thermistor thermometer)

(2) Connecting piping condition: 5m.

3. DIMENSIONS

3.1 Indoor units

866

541162 163

209

3.2 Outdoor units

4. REFRIGERANT DIAGRAM

TINUROODTUOTINUROODNI

HEAT

EXCHANGE

(EVAPORATOR)

HE AT

EXCHANGE

(CONDENSER)

COMPRESSOR

GAS SIDE

3-WAY VALVE

LIQUID SIDE

2-WAY VALVE

COOLING

HEATING

Accumlator

Discharge

Suction

4-Way valve

Electron expansion valve reniartSreniartS

5. ELECTRICAL CIRCUIT DIAGRAM

5.1 Indoor units: BDS28A, BDS35A

RT2RT1

L-OUT

AC-L YEGN

GENERATOR

COOLPLASMA

CONN WIRE

YEGN

M2 M4

RECEIVERAND

EVAPORATOR

FAN

BOARD

TERMINAL

RD BU

HEALTH-L HEALTH-N

RING

MAGNETIC

MOTOR(U.D2)

MOTOR(U.D1)MOTOR(L.R)

PRINTED CIRCUITBOARD

SWING

SWING-LR

SWING

SWING-UD2

DISPLAYBOARD

AP1

DISP2DISP1

POWER

BN(BK)

YEGN(GN)

BU(WH)

YEGN

COM-OUT 3

OUTDOOR UNIT

N(1)

XT1

DC-MOTOR

ROOM TUBE

SWING-UD1

AP2

SWING

MOTOR TEMP.SENSOR

TUBE

ROOM

TEMP.SENSOR

CAP

JUMP

5.2 Outdoor units: BDS28A, BDS35A

4YV

COMP

XT2

RT3

RT2

RT1

N(1)

OFAN1

SPE

COMP-U

AP1

W1BN

W4BK

W2BU

W3YEGNW10RD

W8YEGN

YEGN

W5BU W6YE W7RD

AC-L1

4V AC-L2

N2 N3

COMU

W9BU

EKV

CN1

EH1

RD RD

HEATER

(COMP)

HEAT-N1

(CHASSIS)

HEATER

EH2

HEAT-N2 HEAT-L

TEM.SENSOR

OUTROOM EXHAUST

TEM.SENSOR

TUBE

COMP

FAN

L2 L2 L2

OVC-COMP CN2

W13WH

HPP

COMP-V COMP-W

LX-2

WHOG

W12

W11

LX-1

SAT

INDOOR UNIT

6. PRINTED CIRCUIT BOARD

6.1 Indoor unit: BDS28A, BDS35A

No Part name

1 DC fan

2 Microswitch

3 Electrostatic precipitation

4 Small up & down swing interface

5 Left and right

6 Big up & down swing interface

7 Display interface

8 Ambient temperature sensor

9 Tube temperature sensor

10 Outdoor unit live wire

11 Input interface of live wire for

indoor unit

12 Health

13 Fuse

14 Interface of neutral wire for

indoor and outdoor units

12345

8911 1012

15 Communication interface of

indoor and outdoor units

6.2 Outdoor units: BDS28A, BDS35A

No Part name

1 Input of neutral wire of power

2 Input of live wire of power

3 Communication interface

4 Interface 1 of electric reactor

5 Interface 2 of electric reactor

6 Interface of fan

7 Neutral wire of electric heater of

chassis

8 Neutral electric wire of

compressor

9 Neutral wire of 4-way valve

10 Live wire of 4-way valve

11 Live wire of electric heater

12 Input of overload

13 Temperature sensor

14 U, V, W three phases of

compressor

15 Input of ground wire of power

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