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43
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'11 • KX-T-166
(3) Confirmation before check operation
・
Confirm the installation has been completed properly by hearing, actual inspection or other method.
・
This preliminary confirmation is indispensable to prevent troubles during or after check operation.
・
Check operation can be performed only when the following conditions (1) – (8) are established.
・
Check the following contents listed in the table with 7-segment display and MentePC.
Item
Content
Check method
Check result
(1)
Preparation
Supply power to outdoor and
indoor units.
No outdoor unit in other
refrigerant systems is operating.
All indoor units are stopped.
It has elapsed more than 5
minutes after the stopping.
(2)
Connecting capacity of
indoor units
Connecting capacity of indoor
units is 80% or more of outdoor
unit capacity.
Check capacities of outdoor and indoor units.
(3)
Address setting
Addresses of outdoor unit
(in combination use, both of master
and slave outdoor units) and
indoor units have been set.
Check the number of connected units.
(4)
Temperature range
Outdoor air temperature is 0 –
43
℃
. Indoor air temperature is
10 – 32
℃
.
Check outdoor air temperature with 7-segment
display and indoor air temperature with
MentePC.
(5)
Others
System communicating method
is of new SL.
Check the model name of outdoor unit, indoor
units, central control device, etc.
System is not in error stop
condition.
Check to see if any error code (E??) is
displayed on indoor or outdoor unit.
(6)
Outdoor unit operation
valve
Outdoor unit operation valve is
opened. *1
Check visually.
(7)
Refrigerant amount
Proper amount of refrigerant is
charged.
Check the additional charged amount of
refrigerant is written in the plate for specifying
refrigerant charging amount on the back of
outdoor service panel.
(8)
Number of connected
indoor units
It is same as the number of
connected indoor units installed.
Check with 7-segement display or MentePC.
*1
・
Be sure to open the operation valves in both liquid and gas lines of outdoor unit before starting check operation. In combination use,
open the operation valves not only in liquid and gas lines but also in oil equalizing line of both master and slave outdoor units.
・
Operating with operation valves closed causes vacuum operation that results in a compressor fault.
・
If the operation valves are “closed” before test run, be sure to verify whether the evacuation, air tightness test and additional refrigerant
charge have been completed by hearing to installation contractor, before opening the operation valves.
Otherwise, it may cause such trouble as mixing air (non-condensation gas and water) in, forgetting to charge additional refrigerant
at the site, or others.
