Humidity Reference (Fn16); Power Consumption Display (Fn21) - LG Multi V5 Service Manual

Humidity Reference (Fn16)

When humidity reference is selected (on), the master outdoor unit
microprocessor considers the outdoor ambient humidity condition
when making adjustments to the control values of the refrigeration
cycle. Records humidity every minute, and uses the last twenty (20)
minutes of data to calculate current humidity and dewpoint.
The Humidity Reference function is used by Smart Load Control
(FN14), Comfort Cooling (ID10), 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 34: Setting the Humidity Reference.
Settings
oFF (Default)
on
• When using the Smart Load Control in cooling mode, the Humidity
Reference function could 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.

Power Consumption Display (Fn21)

The function tells the outdoor unit (master outdoor unit if a multi-
frame system) that power consumption must be monitored. The
function also communicates to the outdoor unit if it will be respon-
sible for reporting the data to the central control device(s), or if an
(optional) LG Power Distribution Integrator (PDI) will be responsible
for reporting.
When the optional PDI is installed, the PDI will monitor outdoor unit
power consumption. PDI allocates outdoor unit power consumed to
indoor units based on the volume of refrigerant flow through each
indoor unit during the billing period.
Power consumption data can then be viewed using an LG ACP or
AC Smart central controller, LG MultiSite Communications Manager,
and LG zone controllers. For installations where a third-party BMS
system is present, consumption data is also made available for
through LG's BACnet Gateway.
For use on both heat pump and heat recovery systems.
Table 35: Setting the Power Consumption Function.
Settings
oFF (Default)
Pd10 Outdoor Unit Assigned Reporting Duty
Pd11 PDI Installed and Assigned Reporting Duty
Function
Mode Not Set; Disabled
Humidity Reference On
Power Monitoring
No Power Monitoring
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
OTHER CONTROLS
Figure 23: Setting the Humidity Reference Function.
Turn No. 5 on the master outdoor unit PCB
DIP switch bank SW01 to ON.
Select from "oFF" or "on" options (see table) by using the SW03C
Press the SW01D Reset Button one (1) time to reset PCB.
Humidity Reference is set.
Figure 24: Setting the Power Consumption Display Function.
Turn No. 5 on the master outdoor unit PCB
DIP switch bank SW01 to ON.
Select from oFF, "Pd10," or "Pd11" options (see table) by using the
The Power Consumption Display function is set.
PCB does not need reset.
Setting Optional Modes
73