Toshiba MMU-AP0072WH1, Installation Manual, Page: 2 / 39

1 SMMS 2-way Air Discharge Cassette Type Installation Manual
EN-1 EN-2
Contents
1 PRECAUTIONS FOR SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 ACCESSORY PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 SELECTION OF INSTALLATION PLACE . . . . . . . . . . . . . . . . . . . . . . . . 9
4 INSTALLATION OF INDOOR UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 DRAIN PIPING WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 REFRIGERANT PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7 ELECTRICAL WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8 APPLICABLE CONTROLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9 TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
11 TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
12 SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Please read this Installation Manual carefully before installing the Air Conditioner.
• This Manual describes the installation method of the indoor unit.
• For installation of the outdoor unit, follow the Installation Manual attached to the outdoor unit.
ADOPTION OF NEW REFRIGERANT
This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.
Thank you for purchasing this Toshiba air conditioner.
This Installation Manual describes the methods used to carry out the installation for the indoor unit.
For the installation of the outdoor unit, carry out the work by following the instructions in the Installation Manual
provided with the outdoor unit.
This Installation Manual contains important information that complies with the “Machinery Directive” (Directive 2006/
42/EC) so read through it carefully to ensure that you understand its contents.
After completing the installation work, hand over this Installation Manual as well as the Owner’s Manual provided with
the outdoor unit to the user, and ask the user to keep them in a safe place for future reference.
Provide a dedicated power outlet, which is separate from the one used for the outdoor unit, for supplying the power to
the indoor unit.
Also, the Y-shape branching joint or branch header sold separately is required for the piping connections between the
indoor unit and outdoor unit.
Select these joints or headers according to the piping system capacity.
Generic Denomination: Air Conditioner
Definition of Qualified Installer or Qualified Service Person
The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service
person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the
table below.
Agent Qualifications and knowledge which the agent must have
Qualified
installer
• The qualified installer is a person who installs, maintains, relocates and removes the air
conditioners made by Toshiba Carrier Corporation. He or she has been trained to install,
maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such operations by an individual or individuals
who have been trained and is thus thoroughly acquainted with the knowledge related to these
operations.
• The qualified installer who is allowed to do the electrical work involved in installation,
relocation and removal has the qualifications pertaining to this electrical work as stipulated by
the local laws and regulations, and he or she is a person who has been trained in matters
relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to do the refrigerant handling and piping work involved
in installation, relocation and removal has the qualifications pertaining to this refrigerant
handling and piping work as stipulated by the local laws and regulations, and he or she is a
person who has been trained in matters relating to refrigerant handling and piping work on the
air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to work at heights has been trained in matters relating to
working at heights with the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.
Original instruction