LG KCHH Series Installation Manual page 130

TEST RUN
ADDITIONAL FUNCTION
DIP switch setting
The DIP switch setting of the control box for additional function is as shown below.
Change the DIP switch setting of individual cycle control box PCB to select the functions in the
following table.
Night low noise function
This function judges the hottest day time during the cooling operation to reduce the fan noise of
the outdoor unit at night time with low cooling load by running the outdoor unit fan at low RPM.
* How to set maximum RPM
Cycle Main PCB DIP S/W No. 5 ON
Continue to press the SW03C button until
the Fn3 is displayed + press SW01C button
1 time to set the step.
When Fn3 is on, press the SW03C or SW02C
button until the applicable step is displayed.
oP1 Maximum RPM = 820
oP2 Maximum RPM = 750
oP3 Maximum RPM = 720
Refer to right table for standby time/operating
time by step
Start night low noise function
(When setting oP1)
After maximum chiller temperature is
detected, it operates at 820 (Set) RPM
after 8 hours (Standby time)
Stop night low noise function
(When setting oP1)
After running night low noise function, it is
automatically canceled after 9 hours
(Operation time)
CAUTION
!
• Reset the main board of the cycle control box before running this function.
• Request the function setting to the installation expert after installing the chiller.
• If the function is not used, turn the DIP switch OFF and reset the power.
• If chiller RPM is changed, the cooling capacity may be reduced.
130
DIP-SW01
SW01C(
SW01D(reset)
* RPM/Time setting
Step
oP1
oP2
oP3
Due to our policy of continuous product innovation, some specifications may change without notification.
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7-Segment
SW04C(X : cancel)
SW03C(► : forward)
SW02C(◄ : backward)
●
: confirm)
Maximum Stanby
fan RPM time (Hr)
820 8
750
6.5
720 5
Operation
time (Hr)
9
10.5
12