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SERVICE AND MAINTENANCE

WIRING DIAGRAM

L

1

L

2

L

3

N

N

1

1

2

2

3

3

4

N

1

2

3

L

N

1

2

3

4

N

N

1

1

2

2

3

3

4

N

1

2

3

N

1

2

3

4

L

1

L

2

L

3

N

N

1

1

2

2

3

3

4

N

1

2

3

L

N

1

2

3

4

N

N

1

1

2

2

3

3

4

N

1

2

3

N

L

1

L

2

L

3

L

1

L

2

L

3

1

2

3

4

1

2

Table 3 - Wiring sizes

25

35

45

55

65

3x4

5x2.5

5x4

3x2.5

4x2.5

20

10

16

m

Cooling mm

m

2

A

Unit size

Power supply

Interconnection

2

(Indoor/Outdoor) Heating mm

2

Fuse (slow-blow)

For details of indoor unit and outdoor unit wiring, see the diagram supplied inside the units. Start the unit
and check operation both in cooling and heating mode.

The units are designed to operate for long periods of time with a minimum of maintenance. However, the
following operations must be performed regularly.

Air filter

Unit casing

Drain pan and
evacuation piping

Indoor / Outdoor coils

Compressor

RECOMMENDED

FREQUENCY

Every month or more
often if necessary.

Every month or more
often if necessary.

Each season before start up.

Each season before start up.

MAINTENANCE OPERA

COMPONENT

TIONS

1 - Clean with a vacuum cleaner or tap gently then

wash in warm water (40

º

C) with a mild detergent.

2 - Rinse and dry before replacing on unit.
3 - Never use petrol, alcohol or any other chemical

product.

1 - Remove dust from the front panel with a soft

duster or wipe a dump cloth with a mild soap
solution.

2 - Never use petrol, alcohol or any other chemical

product.

1 - Clean and check for obstructions.

1 - Check condition and remove dust from between

coil fins.

1 - No maintenance required.

MBC 25E/MOC 25 Cooling Only

MBC 35-65E/MOC 35-65 Cooling Only

Power supply
380-415V/3Ph/50Hz/
460V/3Ph/60Hz

Outdoor
unit

Indoor
unit

Outdoor
unit

Indoor
unit

Indoor
unit

Indoor
unit

UNIT CONTROL

UNIT CONTROL

HEATER CONTROL

HEATER CONTROL

Power supply
220-240V/1Ph/50Hz/
208-230V/1Ph/60Hz/

MBH 25E/MOH 25 Heat Pump

MBH 35-66E/MOH 35-65 Heat Pump

Power supply
220-240V/1Ph/50Hz/
208-230V/1Ph/60Hz/

Power supply
380-415V/3Ph/50Hz/
460V/3Ph/60Hz

Outdoor
unit

Indoor
unit

Outdoor
unit

Indoor
unit

Indoor
unit

Indoor
unit

UNIT CONTROL

UNIT CONTROL

HEATER CONTROL

HEATER CONTROL

Summary of Contents for MBC-MBH 50

Page 1: ...onditioning system should only be carried out by trained and qualified personnel Regular maintenance operations such as cleaning the coils and air filters must be performed to keep the units in proper operating condition SAFETY TE CHNICAL GUIDE CAUTION Before undertaking any work on the unit make sure that the power supply has been disconnected INDOOR UNITS Each unit is shipped with the following ...

Page 2: ... Outdoor Unit it Power Supply Indoor Unit Fan Air flow Running Current Input Power Electric Heater MBC MBH MOC MOH 220 240 1 50 or 380 415 3 50 Models Power Supply High Static Duct Type MBC MBH P with Heater 50 Hz R 22 Indoor Unit Outdoor Unit kW V Ph Hz Ph kW A gr V Ph Hz Ph m3 h W A Height mm Width mm Depth mm kg Height mm Width mm Depth mm V Ph Hz Ph Qty Compressor Type Height mm Width mm Depth...

Page 3: ...80 924 Model MBC MBH25 H mm 300 W mm 710 D mm 300 1404 MBC MBH35 MBC MBH45 MBC MBH50 55 MBC MBH65 400 400 400 400 A mm 400 220 220 220 220 220 CONTROL BOX MBC MBH 35 65 LH VIEW REAR VIEW RH VIEW FRONT VIEW FRONT VIEW RH VIEW REAR VIEW LH VIEW LIQUID LINE SUCTION LINE CONTROL BOX LIQUID LINE SUCTION LINE A1 A2 B C D E F G H I J K L M N MBC MBH 25 234 5 234 5 239 73 512 123 400 710 264 98 30 556 75 ...

Page 4: ...er 250 Plenum Electric Heater CLEARANCE REQUIRED FOR OUTDOOR UNITS Unit A B C D E 25 400 200 100 300 600 35 400 200 100 300 800 45 400 200 100 300 800 55 400 200 100 300 800 65 400 200 100 300 800 MOC MOH Table 1 MOC MOH 25 35 C B D A E MOC MOH 45 65 A D C E B OUTDOOR UNIT INSTALLATION OK Picture 1 PLENUM AND ELECTRIC HEATER INSTALLATION 1 The electric heater is installed by factory Picture 1 2 Fi...

Page 5: ...thout any upward slopes An elbow trap at least 50 mm in height must also be provided If possible install a U bend fitted with an inspection cap REFRIGERANT PIPING CONNECTIONS Where the condensate lines from several units are joined together each individual outlet must be fitted with an elbow trap After routing and connecting condensate lines pour water into the collecting pan and check that it dra...

Page 6: ...MH Airflow 1800 2000 3200 2200 2400 2600 2800 3000 Available Ext Static Pa HI ME LO Fan Performance MBC MBH 35 250 200 150 100 50 0 1400 1600 1800 415 470 525 580 635 690 745 800 L S CMH 2000 2200 Airflow 2400 2600 2800 3000 Available Ext Static Pa HI ME LO Fan Performance MBC MBH 50 300 250 200 150 100 50 0 1500 Airflow 1900 470 580 690 800 910 1020 2300 3900 3500 3100 2700 A vailable Ext Static ...

Page 7: ...essor start up will be delayed until 3 minutes has passed SYSTEM OPERATION MODE SELECTION There are five different operating modes Cool Only and Heat Pump Units Cooling mode Electric Heating Units Only Dry mode Automatic mode Fan mode Heating mode only on Cooling units The required mode can be selected by pressing the SYSTEM button until the corresponding mode symbol appears on the display In auto...

Page 8: ...he control is equipped with a diagnostic information system to report operation of the unit as well as operational failures If your remote control does not operate properly first check the polarity of the batteries and that they are in good working condition Also make sure that the control is pointed directly at the air conditioning unit when you are using it that the distance is a maximum of 10 m...

Page 9: ...efore start up Each season before start up MAINTENANCE OPERA COMPONENT TIONS 1 Clean with a vacuum cleaner or tap gently then wash in warm water 40ºC with a mild detergent 2 Rinse and dry before replacing on unit 3 Never use petrol alcohol or any other chemical product 1 Remove dust from the front panel with a soft duster or wipe a dump cloth with a mild soap solution 2 Never use petrol alcohol or...

Page 10: ...thing and safety precautions Read the Manual Risk of electric shock Unit is remotely controlled and may start without warning 1 Isolate all sources of electrical supply to the unit including any control system supplies switched by the unit Ensure that all points of electrical and gas isolation are secured in the OFF position The supply cables and gas pipework may then be disconnected and removed F...

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