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)
Warnings
If installing inside a small room, measures should be taken to
prevent refrigerant levels from building up to critical
concentrations in the event of a refrigerant leak occurring.
Please discuss with the place of purchase for advice on what
measures may be necessary to prevent critical concentrations
being exceeded. If the refrigerant leaks and reaches critical
concentration levels, there is the danger that death from
suffocation may result.
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.
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.)
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.
10.4.1. 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.
10.4.2. 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 backflow 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.)
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