LG LMN078HVT Installation & Maintenance page 52

INSTALLATION CHECKLIST
System ID No.: _________________________________________________ Indoor Unit ID.: ____________________________________
Checked by: __________________________________ Date:__________________ Signature: ___________________________________
Refrigerant Piping – continued
A torque wrench and backup wrench were used to tighten all flare connections.
The back side of all flares were lubricated with a small drop of PVE refrigeration oil before tightening flare fittings.
Ensure all field made flares are 45°. Use LG-supplied flare nuts only.
Pipe segments were properly supported and all wall penetrations were sleeved.
Pipe insulation was not compressed at any point.
Y-branches were properly supported per details provided in the installation manual.
Ensure Y-branches are installed in the correct direction. Flow is always from the single end to the double end.
No oil traps, solenoid valves, sight glasses, filter driers, or any other unauthorized refrigerant specialties were present.
(Optional) High quality R410A rated full port ball valves with a Schrader port were used at all indoor units and at will in the
refrigerant piping network. (Recommended for serviceability.)
Best practice of installing a minimum of 20" of straight pipe between each elbow was followed.
Condensate Pump / Drain Installation
Description
Indoor unit condensate drain pipes were installed correctly.
All condensate vertical risers are equal to or less than 27-1/2" from the bottom of the indoor unit.
Indoor units with condensate pumps were level. Units with gravity drains were level or slightly canted toward the drain connection
and are supported properly.
Pumped condensate drain lines were properly connected (no traps, and connect to the top surface of the main drain line).
Power Wire and Communications Cables
Description
Power wiring was connected to a single phase 208-230V source.
Ground wire was installed and properly terminated at the unit.
The power supplied was clean with voltage fluctuations within specifications. (±10% of nameplate).
Power wiring to the Multi F/Multi F MAX outdoor unit was installed per all local electrical code requirements.
Power wiring to the indoor unit and branch distribution unit (if used) was installed per all local electrical code requirements.
Power and communications cable between the Multi F/Multi F MAX outdoor unit and each indoor unit/branch distrubution unit
(Multi F MAX only) was connected . No "star" or multiple parallel circuits. No cable splices or wire caps were used to connect
communications cables.
LG-supplied cable was used between the indoor unit and its zone controller. No cables spliced and no wire caps used.
Communication type RS-485–BUS type.
IDU communications/power wiring was a minimum of 18-AWG, four (4) conductor, stranded, shielded or unshielded, with insula-
tion material per local code. If shielded, must be grounded to outdoor unit only. Cable segment shields were tied together.
Used appropriate crimping tool to attach ring or spade terminals at all power wiring and control cable terminations.
Verify all ring and spade terminals are copper bearing in all communications daisy chains. Galvanized or nickel plated steel con-
nectors were not used.
ODU to IDU power and control wires (only) were run in the same conduit as provided in the product installation manual. 208-230V
ODU input power was not run in same conduit as power and control wires to IDU, and was separated per manufacturer's guidelines.
All power and control wires were properly separated using the recommended distance provided in the product installation manual.
52
PAGE 2 of 2
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.
F
MULTI
F
MULTI MAX
Check
Check