Selecting A Location For Installation - Toshiba MMU-AP0091H Installation Manual

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 charged 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. Moreover, do not use the existing piping because there are problems with pressure-
resistance force and impurity in it.

1. SELECTING A LOCATION FOR INSTALLATION

Install the air conditioner certainly at a location to sufficiently withstand the weight.
If the strength is insufficient, the unit may fall down resulting in human injury.
Perform a specified installation work to guard against a great wind such as typhoon or an
earth quake.
An incomplete installation can cause accidents by the units failing and dropping.
The following models must be installed at height 2.5m or more from the floor.
(Concealed type duct type and cassette type air conditioners)
If you insert your hands or others directly into the unit while the air conditioner operates, it is dangerous
because you may contact with revolving fan or active electricity.
Installation Location Selection for Outdoor unit
Obtain permission from the customer to install the unit in a location that satisfies the
following requirements :
• A location that permits level installation of the unit.
• A location that provides enough space to service the unit safety
• A location where water draining from the unit will not pose a problem
Avoid installing in the following places.
• Place exposed to air with high salt content (seaside area), or place exposed to large quantities of sulfide
gas (hot spring). (Should the unit be used in these places, special protective measures are needed.)
• Place exposed to oil, vapor, oil smoke or corrosive gas.
• Place where organic solvent is used nearby.
• Place close to a machine generating high frequency.
• Place where the discharged air blows directly into the window of the neighboring house. (For outdoor unit)
• Place where noise of the outdoor unit is easily transmitted.
(When installing the air conditioner on the boundary with the neighbor, pay due attention to the level of noise.)
• Place with poor ventilation.
(Especially in Concealed duct type indoor unit, before air ducting work, check whether value of air volume,
static pressure and duct resistance are correct.)
New Refrigerant Air Conditioner Installation
WARNING
4