Checklists - LG ARUM072BTE5 Installation Manual

Job Name / Location ________________________________________________________________________ Tag # _________________
Date: ____________________________________________________________________________________
Address: _________________________________________________________________________________
_________________________________________________________________________________
Refrigerant Circuit Preparation
Description
Using a copy of the LATS Multi V pipe design diagram, verify the sum of the indoor unit nominal capacity connected to the piping
system is between 50% and 130% of the outdoor unit's(s') nominal capacity. If this rule is violated, the system will not start.
Check all indoor units for power at the unit disconnect and power is present at the indoor unit PCB board. (LED is lit.) DO NOT
TURN ON THE UNIT using the ON/OFF button.
Successful auto address routine is complete. All device addresses have been recorded on the Indoor Unit Device Configuration
Worksheet.
Ensure all field-installed full-port ball valves are open.
The piping system must hold a constant 550 psig pressure for a minimum of 24 hours with all isolation valves open.
Correction Formula: (°F Temp. when pressure was applied - °F Temp. when pressure drop was checked) x 0.79 = psig.
______________ °F - ______________ °F = ______________ psig.
Pressure Measurement Data
Initial Pressure ________________________________
Start Date ____________________________________
Start Time ____________________________________
Initial Ambient Temperature ______________________
A triple system evacuation has been performed. Micron gauge reading held at a maximum of 500 for 1 hour with all isolation
valves open and without the vacuum pump connected.
Evacuation
Initial Micron Level _____________________________
Start Date ____________________________________
Start Time ____________________________________
Power was energized to the outdoor unit(s) at ______________(time) on __________day to power the compressor crankcase
heater(s). (Must be at least 6 hours before commissioning.)
The communications cable to the indoor units has been disconnected from the IDU (B) and IDU (A) terminals at the outdoor
unit(s).
None of the outdoor unit(s) service valves have been opened during the installation and preparation of the system for
commissioning. (If the valves were opened, the factory refrigerant charge has been released.)
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.
PRE-COMMISSIONING
CHECKLIST
Page 1
End Pressure _________________________________
End Date ____________________________________
End Time ____________________________________
End Ambient Temperature _______________________
End Micron Level ______________________________
End Date ____________________________________
End Time ____________________________________
Rise ________________________________________
Check