LG ARND203DCR4 Installation Manual page 54

Additional housing, refrigerant and condensate pipe insulation has been supplemented to prevent
sweating while operating if DOAS unit installed in abnormal environmental conditions. (Optional -
job condition specific.)
All pipes are independently insulated. All insulation seams and joints are airtight. Insulation is not
compressed.
Double layer insulation is provided at pipe supports and wall penetrations.
Electrical
Power provided is single phase, ±10% of DOAS unit nameplate specifications.
Power wires properly sized and protected per NEC and local codes. DOAS unit is properly
grounded.
Power and communications conductors are separated by the recommended minimum distance.
Terminal block screws are tight. Power wires are not in contact with terminals (A) and / or (B). Line
voltage wires have spade connectors installed.
Power wires are properly secured to the control box case to prevent wire tension at the terminal
block.
Wires are protected from chaffing at control box and conduit pipe penetrations.
(Optional) Smoke detector is properly installed and wired. New batteries are installed (if
applicable).
Low voltage control cables are properly secured to the control panel case. Terminal block screws
are tight and the cable is protected from sharp edges at control box case and conduit openings.
Cables are installed at recommended distances from high voltage and EMF generating equipment.
Outdoor unit / DOAS unit communications cable (terminals [A] and [B]).
Field provided communications cable is 18-4, twisted, stranded and shielded. All terminations are
made at the terminal block. No inline splices or wire caps are present.
Communications cable is plenum rated.
Communications cable shield is tied back and is grounded at only ONE end.
DOAS Unit Control Panel
Ethernet cable is securely plugged into the RJ-45 network port of Carel® Controller socket on the
DOAS unit circuit board.
If an optional sensors were installed, the associated cable is plugged into ports
If a gravity drain primary condensate system is used (condensate pipe ONLY connected to the
lowest nipple) the CN-D / Pump plugged has been removed from the socket on the control board
(High-Static models only).
All plugs are properly seated in the ports on the control board.
Power and communications cables are properly restrained and separated.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Due to our policy of continuous product innovation, some specifications may change without notification.
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