LG ARUB115BT2 Installation Manual - Page 73

Night silent operation Function

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ENGLISH Night silent operation Function Test Run In cooling mode, this function makes the ODU fan operate at low RPM to reduce the fan noise of ODU at night which has low cooling load. Max. RPM setting method Dip S/W No.12+14 ON Master ODU SW01B Note 1) Main PCB Power Reset Setting the Fan Max. RPM Master ODU SW01S SW01V SW02V Setting Complete Example of Max. RPM Setting Fan Max. RPM : Step 1 - Night silent operation start © 8 hours after max. ODU temp. sensing, the fan max. RPM is operated setting RPM. - Night silent operation end © 9 hours after Night silent operation is started, the function should be stopped automatically. CAUTION 1. Request installer to set the function during installation. 2. In case the function is not used, set the dip S/W OFF and reset the power. 3. If ODU RPM changes, cooling capacity may go down. [Note] 1. Select appropriate RPM referencing noise table. Setting Step Black button Red button Fan Max RPM Judgment (hr) Operation (hr) 1 1 time 1 time 510 8 9 2 2 times 1 time 510 6.5 10.5 3 3 times 1 time 510 5 12 4 4 times 1 time 450 8 9 5 5 times 1 time 450 6.5 10.5 6 6 times 1 time 450 5 12 7 7 times 1 time 400 8 9 8 8 times 1 time 400 6.5 10.5 9 9 times 1 time 400 5 12 Installation Manual 73

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Installation Manual
73
ENGLISH
Test Run
In cooling mode, this function makes the ODU fan operate at low RPM to reduce the fan noise of ODU at
night which has low cooling load.
[Note]
1. Select appropriate RPM referencing noise table.
CAUTION
1. Request installer to set the function during installation.
2. In case the function is not used, set the dip S/W OFF and reset the power.
3. If ODU RPM changes, cooling capacity may go down.
Fan Max. RPM : Step 1
- Night silent operation start
➞
8 hours after max. ODU temp. sensing, the fan max. RPM is operated setting RPM.
- Night silent operation end
➞
9 hours after Night silent operation is started, the function should be stopped automatically.
Main PCB Power Reset
Setting the Fan Max. RPM
Setting Complete
Dip S/W No.12+14 ON
Master ODU
SW01S
Master ODU
SW01B
SW01V
SW02V
Note 1)
Max. RPM setting method
Example of
Max. RPM Setting
1 time
1 time
1 time
1 time
1 time
1 time
1 time
1 time
Red button
Black button
10.5
9
12
10.5
9
12
10.5
9
Operation
(hr)
6.5
400
8 times
8
1 time
12
5
400
9 times
9
8
400
7 times
7
5
450
6 times
6
6.5
450
5 times
5
8
450
4 times
4
5
510
3 times
3
6.5
510
2 times
2
8
510
1 time
1
Judgment
(hr)
Fan Max
RPM
Setting
Step
Night silent operation Function