Pipe Installation-2; Installing Insulation; Filling With Putty; How To Operate Display Unit - Fujitsu AOYG45LETL Installation Manual

(3) Secure the cables using the cable clips under the terminal blocks, and then secure
the cables using the cable clips attached to the base of the valves.
(4) Be sure to install the terminal cover after the wiring is complete.

7. PIPE INSTALLATION-2

Install the insulated pipes so that they do not touch the compressor.

7.1. Installing insulation

• Use an insulation on the refrigerant pipes to prevent condensation and dripping.
(Fig. A)
• Determine the thickness of the insulation material by referring to Table A.
Table A, Selection of insulation
(for using an insulation material with equal heat transmission rate or below
0.040 W/(m·k))
Relative humidity
[mm (in.)]
6.35 (1/4)
9.52 (3/8)
Pipe diameter 12.70 (1/2)
15.88 (5/8)
19.05 (3/4)
• If the ambient temperature and relative humidity exceed 32 °C, increase the level of
heat insulation for the refrigerant pipes.

7.2. 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.
Fig. A
Putty
Cable
Binder
(Accessory)
Cable clip
WARNING
Insulation material
Minimum thickness [mm]
70% 75% 80%
or more or more or more
8 10 13
9 11 14
10 12 15
10 12 16
10 13 16
WARNING
Insulation

8. HOW TO OPERATE DISPLAY UNIT

8.1. Display unit position

Never touch electrical components such as the terminal blocks except the button on
the display board. It may cause a serious accident such as electric shock.
Once refrigerant charging is completed, be sure to open the valve prior to performing
the local settings. Otherwise, the compressor may fail.
Discharge any static electricity from your body before touching the push buttons.
Never touch any terminal or pattern of any parts on the control board.
• The positions of the buttons on the outdoor unit control board are shown in the figure
below.
• Various settings can be adjusted by changing Push buttons on the board of the outdoor
unit.
85%
or more
17
18
19
20
21
• The printed characters for the LED display are shown below.
LED display part
Button part
WARNING
CAUTION
LED display
Push buttons
En-10