MD Multi-duct cassettes MD Multi-duct cassettes PRESENTATION These units are optimised for operating with chlorine-free R-407C refrigerant having no harmful effects on the ozone layer and they meet the requirements of both current legislation and of care for the environment. The «Multi-Duct Cassettes»...
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MD Multi-duct cassettes MD Multi-duct cassettes 2. OUTDOORS UNIT Of compact design, taking up very little floor area, this unit houses the «Scroll» compressor, the fan-condenser assembly and the electrical box. Two installation possibilities: • Direct floor installation. • Wall hanging with accessory (not supplied). 3.
MD Multi-duct cassettes MD Multi-duct cassettes OPERATING LIMITS The MD indoors units and the GC outdoors units operate within the following limits: COOLING mode Low limits DBT °C Indoor temperature WBT °C Outdoor temperature DBT °C High limits DBT °C Indoor temperature WBT °C Outdoor temperature...
MD Multi-duct cassettes MD Multi-duct cassettes COOLING MODE POWER UNIT Model MD 35 single phase Indoor temperature 30° C Dry Bulb - 50% humidity 27° C Dry Bulb - 50% humidity 23° C Dry Bulb - 50% humidity Outdoor temperature (°C Dry bulb) Model MD 35 three phase Indoor temperature...
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MD Multi-duct cassettes MD Multi-duct cassettes COOLING MODE POWER UNIT Model MD 38 single phase Indoor temperature 30° C Dry Bulb - 50% humidity 27° C Dry Bulb - 50% humidity 23° C Dry Bulb - 50% humidity Outdoor temperature (°C Dry bulb) Model MD 38 three phase Indoor temperature...
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MD Multi-duct cassettes MD Multi-duct cassettes COOLING MODE POWER UNIT Model MD 50 three phase Indoor temperature 30° C Dry Bulb - 50% humidity 27° C Dry Bulb - 50% humidity 23° C Dry Bulb - 50% humidity Outdoor temperature (°C Dry bulb)
MD Multi-duct cassettes MD Multi-duct cassettes INDOOR UNIT Dimensions in mm INSTALLATION The unit slots into a suspended ceiling: There are 2 types of installation: 1°) With recycled air intake grille front view side view Suspended ceiling Filter Opening access panel in the suspended ceiling INTAKE...
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MD Multi-duct cassettes MD Multi-duct cassettes INDOOR UNIT Dimensions in mm INSTALLATION Attachments There are 2 options : 1°) With a mounting plate installation installation of the mounting plate of suspensions rails in the suspended ceiling attachment of the MD indoor unit to the mounting plate preparation for connecting with use of the mounting plate...
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MD Multi-duct cassettes MD Multi-duct cassettes INDOOR UNIT INSTALLATION Attachments 2°) With threaded rods There are positioning possibilities for the attachment brackets, either on the lower part or the upper part of the cassette (see detail B). detail Attachment bracket Washer Threaded rod: Ø...
MD Multi-duct cassettes MD Multi-duct cassettes AIR DISTRIBUTION Air distribution is by way of a duct network providing airflows in two opposite directions The MD indoors unit has 4 air blowing openings on either side of the unit (see detail A): •...
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MD Multi-duct cassettes MD Multi-duct cassettes AIR DISTRIBUTION Intoduce the adaptator Press on the lower section Adaptator Adaptator Flexible conduit Airflow gate Tightening screw Option: Manual treated airflow gate...
MD Multi-duct cassettes MD Multi-duct cassettes NEW AIR INTAKE (option) Connect the fresh air conduit (Ø 4’’). Drill an opening in the air intake plastic Fresh air opening...
MD Multi-duct cassettes MD Multi-duct cassettes CONDENSATES DRAINAGE The MD indoors unit is equipped with a factory-fitted condensates lift pump with a drainage lift height of 600 mm. To ensure effective condensates drainage the downward slope should be 2 cm per metre without any restrictions or rising pipe sections (See Fig.
MD Multi-duct cassettes MD Multi-duct cassettes REFRIGERATION CONNECTIONS The MD Multi-Duct Cassettes are designed for refrigeration connection to the outdoors units by means of pipes with Flare connectors (completely insulated refrigeration quality copper pipes with ends equipped with Flare nuts). Various lengths of pipes equipped with Flare connectors are available from the factory: •...
MD Multi-duct cassettes MD Multi-duct cassettes REFRIGERANT CHARGE The R-407C charge is only contained in the outdoors unit. The indoors unit contains a small quantity of neutral GAS. For this reason, after having installed the pipe connections, it is imperative to proceed with vacuum draining the con- nections and the indoors unit.
MD Multi-duct cassettes MD Multi-duct cassettes ELECTRICAL SPECIFICATIONS Proceed with the following operations to gain access to the electrical box: A) Remove the screws located on the base of the casing. B) Slide the electrical box downwards. C) Remove the box from the rail.
MD Multi-duct cassettes MD Multi-duct cassettes ELECTRICAL CONNECTIONS Three phase units MD indoor unit outdoor unit 10 A safety switch (not supplied) Electric heating (option) 2 x 1.5 mm² cable 6 x 1.5 mm² cable 2 x 0.5 mm² cable SENSOR SENSOR Circuit breaker...
MD Multi-duct cassettes MD Multi-duct cassettes INFRARED RECEIVER COOL* ... COOLING mode light HEAT* ..... HEATING mode light TIMER ..... Timed programming activated light STBY ....Standby light It lights up when the unit is connected and when it is ready to receive instructions from the remote control.
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MD Multi-duct cassettes MD Multi-duct cassettes INFRARED RECEIVER Connections between Electrical the control panel and the infrared receiver An extended cable length can be supplied on request Press gently on the clips to raise the cover. • The equipment is supplied with a 7m long shielded cable, fitted with connectors at both ends for connecting the electrical box to the infra red receiver.
MD Multi-duct cassettes MD Multi-duct cassettes INFRARED REMOTE CONTROL RESET FUNCTION 1. Remove the battery. 2. Simultaneously press these 4 keys until the symbols disappear. 3. Replace the battery. The 4 keys concerned are: Note START / STOP key Flip open the cover/flap to gain access to the controls. Operating mode selection key: COOLING, HEATING, AUTOMATIC COOLING/HEATING REGULATION, VENTILATION, DEHUMIDIFICATION I FEEL key: local temperature sensing...
MD Multi-duct cassettes MD Multi-duct cassettes RCW-2 WALL MOUNTED INFRARED REMOTE CONTROL A wall mounted hardwired remote control is available as an accessory. It groups together all the air conditioning management functions of your air conditioner. Possibility to pilot until 10 indoors units. Display screen Keys for raising and lowering the set temperature.
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1 bis,Avenue du 8 Mai 1945 Saint-Quentin-en-Yvelines 78284 GUYANCOURT Cedex Tél. 33 1 39 44 78 00 Fax 33 1 39 44 11 55 www.airwell.com A A A A A CE Klimatechnik GmbH CE Klimatechnik GmbH CE Klimatechnik GmbH CE Klimatechnik GmbH...
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