Important Notices; Accessory Parts - Toshiba Carrier MMD-AP0074BH2UL-1 Manuel D'installation

• For the refrigerant recovery work (collection of refrigerant from the pipe to the compressor), stop the
compressor before disconnecting the refrigerant pipe.
If the refrigerant pipe is disconnected while the compressor is working with the valve open, the compressor sucks air
and the refrigeration cycle is overpressurized, which may cause a burst or injury.
• Before carrying out the installation, maintenance, repair or removal work, set the circuit breaker to the OFF
position.
Otherwise, electric shocks may result.
• Do not touch the aluminium fin of the unit. You may injure yourself if you do so. If the fin must be touched
for some reason, first put on protective gloves and safety work clothing, and then proceed.
• Suction duct length must be longer than 33.5" (850 mm).
• Install the air conditioner securely in a location where the base can sustain the weight adequately. If the
strength is not enough, the unit may fall down resulting in injury.
• The unit can be accessed from the service panel.
• Install a circuit breaker that meets the specifications in the installation manual and the stipulations in the
local regulations and laws.
• Install the circuit breaker where it can be easily accessed by the agent.
• Under no circumstances the power wire must not be extended. Connection trouble in the places where the
wire is extended may give rise to smoking and/or a fire.
• Upon completion of the installation work, tell the user where the circuit breaker is located. If the user does
not know where the circuit breaker is, he or she will not be able to turn it off in the event that trouble has
occurred in the air conditioner.
CAUTION
• This air conditioner adopts the new HFC refrigerant (R410A) which does not destroy ozone layer.
• The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is
approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also
been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does
not enter the refrigerating cycle.
• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of
the main unit and installation tools are changed from those for the conventional refrigerant.
• Accordingly the exclusive tools are required for the new refrigerant (R410A).
• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not
enter.
• Tighten the flare nut with a torque wrench in the specified manner.
Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result in
refrigerant leakage.
• Wear heavy gloves during the installation work to avoid injury.
3-EN
 Important notices
The indoor unit of this air-conditioner uses a DC motor. Current limiting is provided to allow the motor current to
be regulated due to the characteristics of a DC motor. Additionally, a thermistor protects the unit against an
overload condition. Be sure to stop the fan when replacing the air filter or opening the service panel; otherwise,
a protection circuit is tripped, causing both the indoor and outdoor units to stop. At this time, the check code "P12"
appears, but this is not a malfunction. When maintenance work is completed, reset the power supply and push
the ON/OFF button on the remote control to return the air conditioner to normal operation.
 Maximum capacity of the indoor units
Keep the sum of the capacities of indoor units below 135% of the total capacity of the outdoor unit.
NOTE
If this code comes up after backup setting for outdoor unit failure is performed, perform "no overloading detected"
setting.
<"No overloading detected" setting method>
Turn on dip switch 2 of SW 09 interface P.C. board of outdoor header unit. More than 48 indoor units are connected.
2

Accessory parts

Part name Q'ty
Installation Manual 1
Heat insulating pipe 2
Washer 8
Drain socket 1
Banding band 2
Screw 8
– 2 –
sandium.com
Shape Usage
This manual This manual for installer.
For heat insulation of pipe connecting section
For hanging-up unit (0.4" × Ø1.3" (M10 × Ø34))
For connect drain pipe
For fixing of pipe connecting heat insulator
For attaching a fan guard (sold separately) for air intake from
underneath
EN
4-EN