Mundoclima MUCS-W7 Manual de usuario

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Cassette 4 Ways Compact FCU DC

Service manual

English

CL04415 to CL04416

MUCS-W7

Compact Four-way Cassette Type DC FCU

Compact 4-way cassette FCU

1. External Appearance.......................................................................................................... 2

2. Features .............................................................................................................................. 2

3. Product lineup .................................................................................................................... 3

4. Accessories ........................................................................................................................ 3

5. Specifications..................................................................................................................... 5

6. Dimension........................................................................................................................... 6

7. Wiring Diagrams................................................................................................................. 7

8. Troubleshooting ................................................................................................................. 8

9. Installation .......................................................................................................................... 9

Compact Four-way Cassette Type DC FCU

1. External Appearance

2. Features

Capacity range: 300CFM to 500CFM

Compact design, simple installation and easy maintenance

Round blow air supply enables uniform air flow distribution

Comfortable horizontal air discharge reduces draughts and ceiling soiling

Unique design of the centrifugal fan ensures extra-quiet operation and high efficiency

Wireless remote control with LED display, wired control is optional

Built-in drain water pump with 500mm pumping head

Optional extended drainage pan for protecting your ceiling better

Four speed motor with one reserved for more choice

Fresh air provision makes life healthier and more comfortable

Excellent efficiency

Mundoclima DC FCU adopt the brushless DC motor, the DC motor efficiency is up to 90%. In contrast

with the original FCU.DC FCU power consumption can be reduced by more than 30%.

DC and AC motors power contrast

Power Inpu t：W

Air Flow：CFM

200

100

150

200

300 400 500 600 800 1000 1200

DC moto r

AC moto r

Compact Four-way Cassette Type DC FCU

DC brushless motor

The motor adopts fully enclosed structure design, it is energy-saving , of high operating efficiency and

durable motor. The motor bearing can operate 80,000 hours continuously, and easy for maintenance.

Low noise

Advanced 3-D spiral fan design reduces air resistance and operating sound. The motor bearing

with unique design makes less operation vibration.

3. Product lineup

Type

Compact 4-way cassette (MUCS-W7)

●

4. Accessories

Standard accessories

Accessory name

Qty.

Shape

Usage

Owner’s & installation manual

Installation guide

Installation paper board

Tubing& Fittings

Soundproof/ insulation sheath

Drainpipe Fittings

Out-let pipe

Out-let pipe clasp

Tightening band

Remote controller& Its Frame

Remote controller

R05/BGE-20

Frame

Mounting screw(ST2.9x10-C-H)

Alkaline dry batteries

Remote controller manual

Compact Four-way Cassette Type DC FCU

Optional accessories

Accessory name

Qty.

Shape

Usage

Wired controller

KJR-29B

Wired control

Wired controller

KJR-12B/D

Wired control

Central controller

CCM03

Central control

3-way valve

(CL92869)

(CL92871)

(CL92905)

Central control

Central controller

CCM30

(CL92911)

(CO05506 + CO05509)

3-way valve

Compact Four-way Cassette Type DC FCU

5. Specifications

Model

Air flow

H/M/L

m3/h

717/502/359

785/550/393

H/M/L

CFM

422/296/211

462/324/231

Cooling

Capacity

H/M/L

3.93/3.07/2.48

4.24/3.31/2.67

Water flow rate

l/h

676

729

Water pressure drop

H/M/L

kPa

12.0

9.4

Heating 50℃

Capacity

H/M/L

5.34/4/3.15

5.77/4.33/3.4

Water pressure drop

kPa

10.6

9.4

Heating 70℃

Capacity

H/M/L

8.34/6.26/5.16

9/6.76/5.56

Water pressure drop

kPa

11.9

10.5

Power supply

V/Ph/Hz

220-240/1/50

Power input

Sound pressure level

H/M/L dB(A)

44.8/36.2/28.8

46.6/37.9/30.3

Fan motor

Type

DC motor

Quantity

Brand

Panasonic

Model

WZDK37-38G

Fan

Type

Centrifugal, forward-curved Blades

Quantity

Coil

Row

Max. Working pressure

MPa 1.6

Coil length x height

1315 x210

Fin spacing

1.3

Fin type

Hydrophilic aluminium

Number of circuits

Diameter

Φ7

Panel

Dimensions

W×H×D

647×50×647

Packing

W×H×D

715×123×715

Net weight

2.5

Gross weight

4.5

Body

Dimensions

W×H×D

575×261×575

Packing

W×H×D

655×290×655

Net weight

16.5

Gross weight

21.5

Pipe connection

Water inlet/outlet pipe

Inch

G3/4

Drain pipe

ODΦ25

Note:

1. The data is the performance in high speed with relevant static pressure.

2. Cooling Conditions: Entering Water 7°C, Temperature Rise 5°C, Entering Air Temperature 27°C DB,19°CWB.

Heating Conditions: Entering Water 50°C, enter air temperature 20°C, the same water flow as the cooling conditions.

Entering water 70°C, enter air temperature 20°C,△T water 10°C .

3. Noise is tested in full-anechoic test room.

MUCS-14-W7 MUCS-16-W7

Compact Four-way Cassette Type DC FCU

6. Dimension

H(mm)

Compact Four-way Cassette Type DC FCU

7. Wiring Diagrams

MUCS-14-W7

MUCS-16-W7

(Reserved)

Compact Four-way Cassette Type DC FCU

8. Troubleshooting

Troubles and causes of air conditioner

If one of the following malfunctions occur, stop operation, shut off the power, and contact with your dealer.

The operation lamp is flashing rapidly (five times per second),

you disconnect the unit with the power and then connect the unit with the power again after two or three

minutes but the lamps still flash.

Switch operations are erratic.

The fuse is blown frequently or the circuit breaker is tripped frequently.

Foreign matter or water has fallen inside the air conditioner.

Water leaks from the indoor unit.

Other malfunctions.

If the system does not properly operate except the above mentioned cases or the above mentioned

malfunctions is evident, investigate the system according to the following procedures.

Solution

Clean the heat exchanger.

Clean the air filter.

Eliminate all dirties and make air

smooth.

Close doors and windows.

Make curtains in order to shelter from

sunshine.

Reduce heat source.

AC cooling capacity reduces (normal).

Check leakage .

Symptoms Causes

Unit does not start

Airflowingnormallybut

completely can't cooling

Units start or stop frequently

Low cooling effect

Low heating effect

Power failure.

Power switch is off.

Fuse of power switch may have burned.

Batteries of remote controller exhausted

or other problem of controller.

Temperature is not setted correctly.



Air or no concreting gas in the watering

circuit.

three-way valve is malfunction.

Voltage is too high or too low.

System circuit is blocked.

Temperature is not setted correctly.

Indoor unit heat exchanger is dirty.

The air filter is dirty.

Inlet/outlet of indoor units is blocked.

Doors and windows are open

Sunlight directly shine.

Too much heat resource.

Leakage of water .

Wait for the comeback of power.

Switch on the power.

Replace the fuse.

Replace the batteries or check the

controller.

Set the temperature properly.

Vacuum .

Maintenance or change three-way

valve.

Install manostat.

Find reasons and solution.

Use heating device.

Close doors and windows.

Check leakage.

Doors and windows not completely

closed.

Leakage of water.

NO. Malfunction Operation Timer Defrost Alarm

Room temperature sensor

checking channel is abnormal

Evaporator sensor checking

channel is abnormal

EEPROM malfunction

Water-level switch

malfunction

× ×

×☆

☆

× ×× ☆

☆

(× Extinguish,☆ Flash at 5Hz）

☆☆

ON/OFF switch

Fan failure ☆☆ ××

Compact Four-way Cassette Type DC FCU

9. Installation

9.1 Installation space

The indoor unit should be installed in a location that meets the following requirements:

There is enough room for installation and maintenance.

The ceiling is horizontal, and its structure can endure the weight of the indoor unit.

The outlet and the inlet are not impeded, and the influence of external air is the least.

The air flow can reach throughout the room.

The connecting water pipe and drainpipe could be extracted out easily.

There is no direct radiation from heaters.

Caution:

Keep indoor unit, outdoor unit, power supply wiring and transmission wiring at least 1 meter away from

televisions and radios. This is to prevent image interference and noise in those electrical appliances. (Noise

may be generated depending on the conditions under which the electric wave is generated, even if 1 meter

is kept.)

9.2 Install the main body

A. The existing ceiling (to be horizontal)

a. Cut a quadrangular hole of 880×880mm in the ceiling according to the shape of the installation paper

board.

The center of the hole should be at the same position of that of the air conditioner body.

Determine the lengths and outlets of the connecting pipe, drain pipe and cables.

To balance the ceiling and to avoid vibration, please enforce the ceiling when necessary.

b. Select the position of installation hooks according to the hook holes on the installation board.

Drill four holes of Ø12mm, 50~55mm deep at the selected positions on the ceiling. Then embed the

expansible hooks (fittings).

Face the concave side of the installation hooks toward the expansible hooks. Determine the length of

the installation hooks from the height of ceiling, and then cut off the unnecessary part.

If the ceiling is extremely high, please determine the length of the installation hook according to facts.

c. Adjust the hexangular nuts on the four installation hooks evenly, to ensure the balance of the body.

If the drainpipe is awry, leakage will be caused by the malfunction of the water-level switch.

Adjust the position to ensure the gaps between the body and the four sides of ceiling are even. The

body's lower part should sink into the ceiling for 10~12 mm.

In general, L is half of the screw length of the installation hook.

Locate the air conditioner firmly by wrenching the nuts after having adjusted the body's position well.

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