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10.5.1. Accessories supplied with outdoor unit
• The following parts are supplied as accessories with each outdoor unit.
Check that all accessory parts are present before installing the outdoor unit.
10.5.2. Before installation work
• This product is using new refrigeration (R410A). The basic way of installation work is the same as usual, but water and impurities
should be controlled more strictly than before due to characteristic of refrigerating machine oil. Therefore, selection of materials
to use and processing, storing and brazing need appropriate construction and control.
1. Tools and materials
There are tools and materials for both new refrigeration and usual refrigeration you can use together and for either two of
them you can use. Use the below for new refrigeration.
• Vacuum pump (with back flow preventor system)
• Gas leakage detection warning device
• Gauge manifold
• Charge hose
2. Installation work
a. Brazing work
Brazing work needs replacing air inside pipe with nitrogen gas in order to prevent oxidation scale from occurring. This
is called nitrogen replacement, and one of very important work in brazing refrigerant piping. (Oxidation preventive is
not possible to use)
The unit must be installed in accordance with applicable national
and local regulations.
Any electrical work should only be carried out by qualified
technician and use exclusive circuits without fail.
Presence of insufficient capacity in power circuit or imperfection in
execution leads to electric shock, fire, etc.
Once installation work is completed, check that there are no
refrigerant gas in the room that can come into contact with sparks
or flames from a fan heater, stove or kitchen range, which will
cause toxic gases to be generated.
When performing piping work do not mix air except for specified
refrigerant (R410A) in refrigeration cycle. It causes capacity down,
and risk of explosion and injury due to high tension inside the
refrigerant cycle.
Earth
This equipment must be properly earthed.
Earth line must not be connected to earth of gas
pipe, water pipe, lightning rod and telephone.
Otherwise, it may cause electrical shock in case
the equipment breakdown or has leakage current.
Installation of Earth Leakage Current Breaker.
This equipment must be installed with earth leakage current breaker.
Otherwise, it may cause electrical shock and fire in case the equipment breakdown or has leakage current.
Warnings
Cautions
Do not install the unit at the place where the possibility of
inflammable gas leakage exists. If such gas leakages should arise
and the gas builds up around the unit, such situation may lead to
ignition.
Drain piping should be made to ensure secure drainage according
to the manual for installation work and carry out the thermal
insulation to prevent the occurrence of condensation.
Imperfection in piping work leads to water leakage and may cause
the house and property, etc. to become wet
Position the indoor unit and outdoor unit, power cords and indoor/outdoor unit connection cables in a way so that they are at least 1 meter away
from televisions and radios.
This is to avoid problem such as interference with picture and/or sound. (However, note that depending on the electromagnetic wave
conditions, interference may still occur even if the separation distance is more than 1 meter.)
Part name Q’ty Diagram Application
Protective
bushing
2 For protecting electrical
wires
Banding
strap
3 For tying electrical wires
together
Heat pump-types only
Part name Q’ty Diagram Application
Drain elbow AS 1 For connecting the drain
pipe (with ring seat)
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