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TABLE OF CONTENTS
2
TIPS FOR SAVING ENERGY
2
5
6
6
7
8
9
11
19
25
33
34
INSTALLATION PROCESS
Indicate clearly who is to be responsible for switch settings
Determination of division work
Make relationship between outdoor, indoor, remote controller, and
Preparation of contract drawings
option connections clear. (Prepare control circuit diagram)
Take account of
Sleeve and insert work
gradient
of drain piping
Check model name to
Installation of indoor unit
make sure the fitting
is made correctly
Special attention to dryness,
Refrigerant piping work
cleanness and tightness
Drain pipe work
Adjust to downward gradient
Duct work
Make sure airflow is sufficient
Make sure no gaps are left where
Heat insulation work
the insulating materials are joined
Electrical work
Multiple core cable must not be used.
(connection circuits
(suitable cable should be selected)
and drive circuits)
In the final check for 24hours at 3.8 MPa(38.7 kgf/cm
Airtight test
be no drop in pressure.
The vacuum pump used must have a capacity of reaching at least 5
Vacuum drying
torr, more than 1 hour
Recharge correctly as calculated in this manual. and record the
Additional charge of refrigerant
amount of added refrigerant
Make sure there are no gaps left between the facing materials used
Fit facing panels
on the ceiling
Refer to automatic addressing flowchart
Automatic addressing of indoor unit
Preheat the crank case with the electrical heater for more than 6
hours. (In case of outdoor temperature below 10°C
Run each indoor unit in turn to make sure the pipe work has been
Test run adjustment
fitted correctly
Explain the use of the system as clearly as possible to your customer
Transfer to customer with explanation
and make sure all relevant documentation is in order
CAUTION
!
• The above list indicates the order in which the individual work
operations are normally carried out but this order may be varied
where local conditions warrants such change.
• The thickness of the piping should comply with the relevant
local and national regulations for the designed pressure 3.8MPa.
• Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state.(If the refrigerant
is charged in its gaseous state, its composition changes and the
system will not work properly.)
5
Outdoor unit foundation work
The foundation must be level even
Installation of outdoor unit
Avoid short circuits and ensure
sufficient space is allowed for service
2
) there must
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