LGRED Installation Manual

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.
MULTI
F
MAX
MULTI
F
WITH
INSTALLATION CHECKLIST
PAGE 2
Condensate Pump / Drain Installation
Description Check
Condensate piping is installed correctly on indoor units. Material used is acceptable under local code. Insulated as necessary to
prevent condensation.
All condensate vertical risers are equal to or less than 27-1/2 inches from the bottom of the indoor unit.
Indoor units with condensate pumps are level. Units with gravity drains are level or slightly canted toward the drain connection
and are supported properly.
Pumped condensate drain lines are properly connected (
do not have traps, and connect to the top surface of the main drain
line).
Multi F / Multi F MAX with LGRED gravity condensate drain line is connected and routed where it properly drains away or, if
installed in a mechanical room, was connected and properly routed to a drain connection.
All condensate lines are properly insulated to prevent condensation.
Power Wire and Communications Cables
Description Check
Ground wire is installed and properly terminated at the unit.
Power wiring is connected to a single phase 208-230V source.
The power supplied is clean with voltage fluctuations within specifications (±10% of nameplate).
Power wiring to the Multi F / Multi F MAX with LGRED outdoor unit is field supplied, solid or stranded, and installed per all local,
state, and NEC requirements.
For Multi F with LGRED Systems
• Communication / connection (power) wiring from the outdoor unit to the indoor unit is minimum 14 gauge, four-conductor, stranded,
shielded or unshielded. If shielded, must be grounded to chassis at the outdoor unit only.
• Use of 14 AWG, four (4) conductor, stranded, shielded or unshielded wire is allowed for lengths up to the published maximum
pipe length, plus recommended slack at both ends.
For Multi F MAX with LGRED Systems
All power wiring / communication cable to be minimum 14 AWG from the Multi F MAX with LGRED outdoor unit to the BD unit
stranded, shielded or unshielded (if shielded, it must be grounded to the chassis of the outdoor unit only), and must comply with
applicable local and national codes.
• Communication / connection (power) wiring from the BD unit to the indoor unit is minimum 14 gauge, four-conductor, stranded,
shielded or unshielded. If shielded, must be grounded to chassis at the BD unit only.
• Use of 14 AWG, four (4) conductor, stranded, shielded or unshielded wire is allowed for lengths up to the published maximum
pipe length, plus recommended slack at both ends.
Power wiring to the outdoor unit and communication / connection (power) cable from the outdoor unit to the indoor units or branch
distribution units (Multi F MAX with LGRED only) are separated per manufacturer’s guidelines. These cannot be run in the same
conduit.
Communications / connection (power) cable were not ran in the same conduit (outdoor unit to indoor unit or branch distribution
unit (Multi F MAX with LGRED only) as provided in the product installation manual.
Proper communications cable was used between each indoor unit and its zone controller where applicable. Cables are continuous
with no splices between terminals.
Communication type RS-485–BUS type.
Used appropriate crimping tool to attach ring or fork terminals at all power wiring and control cable terminations.
Only LG-supplied Y-cables are used between grouped indoor units, if applicable.