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8. 4.
Installing insulation
•
Install insulation material after conducting the "8.1 Sealing Test".
•
To prevent condensation and water droplets, install insulation material on the refriger-
ant pipe.
•
Refer to the table to determine the thickness of the insulation material.
•
If the outdoor unit is installed at a level that is higher than the indoor unit, the water that
has condensed in the 3-way valve of the outdoor unit could travel to the indoor unit.
Therefore, use putty in the space between the pipe and the insulation to prevent the
entry of water.
Table.
Selection of insulation
(for using an insulation material with equal heat transmission rate or below 0.040W/(m·k))
Relative humidity
Pipe diameter
6.35
(mm)
9.52
12.70
15.88
19.05
*
When an ambient temperature and relative humidity exceed 32 °C, please strengthen
heat insulation of refrigerant pipe.
8. 5.
Filling with putty
Fill the piping holes and wiring holes with putty (supplied locally) to avoid any gap
(Fig A). If small animals such as insects enter the external unit, a short circuit may be
caused near electrical components in the service panel.
•
If the outdoor unit is installed at a
level that is higher than the indoor
unit, the water that has condensed
in the 3-way valve of the outdoor
unit could travel to the indoor unit.
Therefore, use putty in the space
between the pipe and the insulation
to prevent the entry of water to the
indoor units.
En-19
Insulation material
Minimum thickness (mm)
<
<
<
= 70%
= 75%
= 80%
8
10
13
9
11
14
10
12
15
10
12
16
10
13
16
WARNING
Fig. A
Putty
9.
TEST OPERATION
9. 1.
Indoor unit connection check
Normal operation will not be possible without performing the Indoor unit connection
check.
9. 1. 1.
Things to confi rm before starting the Indoor unit
connection check
To ensure safety, check that the following work, inspections and operations have been
completed.
1 Check that all work on the wiring connecting the outdoor
unit and indoor units has been completed.
2 Is a breaker installed at the power supply cable of out-
door unit and every indoor units?
<
= 85%
3 Are the cables connected to the terminals without loose-
ness, and in accordance with the specifi cations?
17
4 Are all the indoor units stopped? Indoor unit connection
18
check can not be performed if any unit is operating.
19
5 Is the connection to Service tool (UTY-ASGX) and Web
20
monitoring tool (UTY-AMGX) stopped?
21
9. 1. 2.
Restrictions applicable when performing the Indoor
unit connection check
The Indoor unit connection check can be completed within several minutes.
9. 1. 3. Operating procedure for Indoor unit connection check
Please perform the indoor unit connection check according to following procedures.
•
Turn on the power
of indoor unit and
outdoor unit.
LED105
LED104
Insulation
Check Item
MODE/EXIT
: Press the "MODE/EXIT" button.
SELECT
: Press the "SELECT" button.
ENTER
: Press the "ENTER" button.
: Press the "ENTER" button for
ENTER
more than 3 seconds.
MODE/EXIT
Set to Function mode [F3].
SELECT
(When [F4] to [F9] are displayed,
SELECT
continue to press the "SELECT"
button until [F3] is displayed.)
ENTER
Press the "SELECT" button until
SELECT
"12" is displayed.
ENTER
•
Press the
"ENTER"
button for
more than 3 seconds.
When indoor unit connection check
can not be performed
•
This will be displayed when the
Indoor unit connection check
starts.
Check Column
- Quick Links:
- Test Run
- Error Display Mode
Hide quick links:
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