Service manual

ManualsBrandsYMGI ManualsAir ConditionerWMMS-24EW-V2B(59)2

IMPORTANT NOTES FOR UNIT OPERATION ABMIENT & SIZING

P15 OF 34

CONNECTION TUBE

ALLOWED MAXIMUM

REF. TUBE

WEIGHT

DIMENSION W H D

LOADING CAPACITY

DRAIN

REFRIGERANT

LIFT

DROP

TOTAL LENGTH

INDOOR-NET

INDOOR-GROSS

OUTDOOR-NET

OUTDOOR-GROSS

INDOOR-NET

INDOOR-BOX

OUTDOOR-NET

OUTDOOR-BOX

20'/40'/40'HQ

DRAIN PIPE

DISCHARGE

SUCTION

LBs

INCH

SETS

OPTIONS AT MANUFACTURE OR AFTER SALES:

* Rust-free Cabinet

* Plug & Connect Valves

* Low Ambient Control

* Wall Mount Line Control

* Cabled Defrost Control

COMPRESSOR

ELECTRIC HEATER (SUP.)

DEHUMIDIFICATION

SEER

HSPF

SOUND LEVEL (Actual)

REFRIGERANT

TOTAL CURRENT

MCA

HVAC CIRCUIT

BREAKER SIZE

INDOOR FAN MOTOR

OUTDOOR FAN MOTOR

INDOOR / OUTDOOR

W/O HEATER (31,32 Models)

WITH HEATER (34 Models)

W/O HEATER (31,32 Models)

WITH HEATER (34 Models)

W/O HEATER (31,32 Models)

WITH HEATER (34 Models)

FAN

MOTOR (PSC)

FAN

MOTOR (PSC)

HERMETIC

AMP

TYPE

CFM H/M/L

RATED AMP

SPEED

TYPE

CFM

RATED AMP

SPEED

TYPE

BRAND

W(MAX)

PTS./H

BTU/H.W

dB(a)

HEATING BOOSTER(-34B MODELS ONLY)

RATED

PRE-CHARGED FOR 25' TUBING

FROM CIRCUIT BREAKER TO OUTDOOR TO INDOOR UNIT

POWER SOURCE

COOLING ONLY

HEAT PUMP

MODELS

HEAT PUMP+ELE. HEATER

System Model

REF. TUBE/WIRE INS. KIT

COOLING CAPACITY

HEATING CAPACITY

BTU/H 1), 2)

Indoor Unit

Outdoor Unit

Indoor Unit

Outdoor Unit

Indoor Unit

Outdoor Unit

Copper Sets, Wiring, Putty, Wall Sleeve, Wrap, Drain Hose

Rated ID 80/67F OD 95F

Rated ID 70/60F OD 47F (17F)

RECOMMENDED WORKING TEMPERATURE RANGES

COOLING ID/OD (F) 3)

HEATING ID/OD (F) 3)

* Advanced Health Kits (HEPA/Enzyme/

Cold Catalyst Filter, Light Wave, Or,

Anion Generator)

* Treated Coil

* Plug & Connect Copper Line Set

3/8"

5/8"

150

172

49.5x12.8x9.1

52.0x16.3x12.8

34.6x31.1x14.2

40.6x35.5x18.9

48/98/116

1200

7.6

38-45 / 48-54

700/615/560

0.56

8.6

13.8

10.9

16.8

25.0

30.0

2350

0.90

WMMS-24K-31B

WMMS-24E-31B

WMMS-24C-31B

WMMS-24K-32B

WMMS-24E-32B

WMMS-24C-32B

WMMS-24K-34B

WMMS-24E-34B

WMMS-24C-32B

INST-3858-xx

24000

25000 (15360)

Flexible

1/4"

3/8"

31.5x11.5x7.8

34.3x14.4x11.0

27.6x21.3x10.0

31.5x24.4x14.8

108/228/258

1/4"

1/2"

33.9x11.5x8.0

36.6x14.4x11.0

31.1x21.3x9.7

35.2x24.4x14.0

102/220/242

3/8"

5/8"

110

121

42.5x13.0x8.7

46.5x16.7x11.9

33.3x26.8x12.2

39.8x30.1x16.9

66/138/148

800

3.4

1000

4.6

1200

6.9

9.2

26-34 / 42-51 28-38 / 43-51 32-41 / 46-53

R410A

A: 115/1/60 B: 208-230/1/60

CROSS FLOW

235/200/185

0.20

330/310/235

0.40

645/575/515

0.39

PROPELLER

ROTARY

6.9

10.4

8.9

13.0

15.0

20.0

8.1

12.4

9.5

15.0

20.0

25.0

6.4

11.6

8.8

14.5

20.0

25.0

1175

0.20

1175

0.50

1765

0.60

WMMS-09K-31A

WMMS-09E-31A

WMMS-09C-31A

WMMS-09K-32A

WMMS-09E-32A

WMMS-09C-32A

WMMS-09K-34B

WMMS-09E-34B

WMMS-09C-32B

INST-1438-xx

WMMS-12K-31A

WMMS-12E-31A

WMMS-12C-31A

WMMS-12K-32A

WMMS-12E-32A

WMMS-12C-32A

WMMS-12K-34B

WMMS-12E-34B

WMMS-12C-32B

INST-1412-xx

WMMS-18K-31B

WMMS-18E-31B

WMMS-18C-31B

WMMS-18K-32B

WMMS-18E-32B

WMMS-18C-32B

WMMS-18K-34B

WMMS-18E-34B

WMMS-18C-32B

INST-3858-xx

9000 12000 18000

9500 (6120) 12800 (7780) 19000 (11350)

Indoor Side 61 to 105 / Outdoor Side 45 to 115 4)

Indoor Side 17 to 86 / Outdoor Side 17 to 75 5)

Hitachi, Sanyo, Panasonic

1) Performance rated for matched system at standard conditions-cooling ID 80/67F, OD 95F, heating ID 70/60F, OD 47/43F. Unit performance

varies when weather changes from the standard one.

2) Select equipment capacity/sizes per space load calculation schedule at local design temperatures and cooling & heating hours. Not to

over size or under size equipment.

3) Watch unit operation during extreme weather conditions in summer and winter. After the unit is used for quite a while in these weather, unit

may step into protection mode and stay idle.

4) May work in lower temp if installed with optional low ambient controller. Ref. ICM 326HN.

5) Capacities and efficiency decrease, as outdoor temperature drops.

P16 OF 34

A) The indoor fan runs at low speed.

B) After one hour of operation the set temperature will decrease by 36 C . One hour later, the set temperature will

decrease by 2 C once more. The unit will then continue operating at 39 C below the set temperature.

A) The indoor fan runs at low speed.

B) After one hour of operation the set temperature will increase by 34 . One hour later, the set temperature will

increase by 1 once more. The unit will then continue operating at 36 above the set temperature.

Sleep mode in heating running

Sleep mode in cooling and drying running

SLEEP MODE

FAN MODE

* Indoor fan runs at the set speed while compressor and outdoor fan are turned off.

* Indoor fan speed can be adjusted for low, medium and high.

* Auto mode entering

a) Once some operation mode is determined, it can not be changed even if the RT has altered.

b) You can change the operation mode by remote controller.

* If restart within 2 hours, the unit will resume the same operation mode as before.

If restart after 2 hours, the unit will select the operation mode according to the initial room temperature.

* At auto mode the ST can only be set + or - 2 of the RT.

* In this mode, the air conditioner can automatically adjust the room temperature to decide the most suitable

temperature. At the start of operation, the unit will automatically select the operation mode according to the

room temperature. The following table shows the conditions which are set at start up.

AUTO MODE

d) In this mode, the indoor fan keeps running at low speed with the same pace as the compressor, and this

speed can not be controlled by remote controller.

* In this mode, the air conditioner automatically sets the room temperature and this temperature is incontrollable

by remote controller. The initial ST=RT-2 .

* Control during dry mode:

DRY MODE

a) When RT<15 , dry mode is not available; when RT 15 , the compressor intermittently runs under the

influence of TS and RT.

b) When RT 23 , if RT ST, the compressor runs intermittently as this: Run for 8 minutes Stop for 3 minutes

If RT<ST, the compressor runs intermittently as this: Stop for 4 minutes Run for 1 minute

c) When RT<23 , if RT ST, the compressor runs intermittently as this: Run for 2 minutes Stop for 3 minutes

If RT<ST, the compressor runs intermittently as this: Stop for 4 minutes Run for 1 minute

CONTROL SPECIFICATION

Room

Temperature (RT)

Cool only type

Mode Mode

Cool Cool

Dry Dry

Initial Setting Temperature

RT 79 F

79 F>

RT 77 F

77 F>

RT 73 F

RT<73 F

75 F

70 F

79 F

RT-2 RT-2

Heat pump type

Initial Setting Temperature

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