LG ARUM072BTE5 Installation Manual page 131

Smart Load Control (SLC) Function
(Fn14)
Smart Load Control Function may assist in reducing energy by low-
ering compressor lift during off-peak hours and shoulder seasons.
The function adjusts compressor lift by reading outdoor ambient
temperature, humidity (if FN16 is set to on), and current heating or
cooling demand in real time.
Smart Load Control Options:
• Smooth Mode (oP1): Maximize energy savings; rate of temperature
change less important.
• Normal Mode (oP2): Balance the rate of temperature change with
energy consumed.
• Peak Mode (oP3): Quickly cool / heat the building; energy con-
sumption less important.
All three (3) options only run for twenty (20) minutes of operation fol-
lowing a compressor start. Following the twenty (20) minute morning
warm-up (or cool-down period), Smart Load Control will then use
the same algorithm irrelevant of which Smart Load Control option
selected.
Smart Load can be used in almost every application except those
where the outdoor unit is serving a Dedicated Outdoor Air System
(contact an LG representative for information).
Use on both heat pump and heat recovery systems.
Humidity Reference (Fn16)
When humidity reference is selected (on), the master outdoor unit mi-
croprocessor considers the outdoor ambient humidity condition when
making adjustments to the control values of the refrigeration cycle.
The Humidity Reference function is used by Smart Load Control
(FN14), Comfort Cooling (ID10 [see Multi V 5 Service Manual]), and
core logic Intelligent Defrost – Smart Heating algorithms to prepare
the system for changes in the building load.
For use on both heat pump and heat recovery systems.
Table 55: Setting the Humidity Reference.
Settings
oFF (Default)
on
• When using the Smart Load Control in cooling mode, the Humid-
ity Reference function may assist in improving energy savings
because the evaporation temperature decreases.
• If high humidity conditions exist when the system is operating in
heating mode, defrost mode will be delayed because target high /
low pressure will be changed (Intelligent Defrost - Smart Heating).
• If Comfort Cooling is selected for one (1) or more indoor units, then
the superheat reset will be delayed or will not reset at all under
humid outdoor conditions. See the Multi V 5 Service Manual.
Function
Mode Not Set; Disabled
Humidity Reference On
Due to our policy of continuous product innovation, some specifications may change without notification.
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Setting the Optional Modes
Setting the Smart Load Control Functional.
Turn No. 5 on the master outdoor unit PCB
DIP switch bank SW01 to ON.
Select the "Func" mode by using the SW03C forward ►button and the
SW02C backward ◄ button, and then press the SW01C confirm
Select the "Fn14" function by using the SW03C forward ►button and
the SW02C backward ◄ button, and then press the SW01C
confirm ● button.
Select from "oFF," "op1" through "op3" options (see table) by using the
SW03C forward ►button and the SW02C backward ◄ button,
and then press the SW01C confirm ● button.
Press the SW01D Reset Button one (1) time to reset PCB.
The Smart Load Control function is set.
Table 54: Setting the Smart Load Control Function.
Settings Mode
oFF (Default) Not Selected
oP1 Smooth
oP2 Normal
oP3 Peak
Setting the Humidity Reference Function.
Turn No. 5 on the master outdoor unit PCB
DIP switch bank SW01 to ON.
Select the "Func" mode by using the SW03C forward ►button and the
SW02C backward ◄ button, and then press the SW01C confirm
Select the "Fn16" function by using the SW03C forward ►button and
the SW02C backward ◄ button, and then press the SW01C
confirm ● button.
Select from "oFF" or "on" options (see table) by using the SW03C
forward ►button and the SW02C backward ◄ button, and then
press the SW01C confirm ● button.
Humidity Reference is set.
Press the SW01D Reset Button one (1) time to reset PCB.
● button.
Details (First Twenty [20] Minutes)
-
Maximize Energy Savings
Balance the Temperature Rate of
Change with Energy Consumed
Quickly Change the Temperature.
● button.
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