Connecting Pipes To The Indoor Unit - LG ATNH24GPLE2 User Manual

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3. Installation of indoor unit
3.1.5 Indoor unit installation
• Installing of the accessories (except for the decoration
panel) before installing the indoor unit is easier.
1) Install the indoor unit temporarily.
• Attach the hanger bracket to the suspension bolt. Be sure
to fix it securely by using a nut and washer from the upper
and lower sides of the hanger bracket.
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
Keep the length of the bolt from the
bracket to 40mm(1-9/16 inch)
Ceiling board
Paper model
for installation
• The following parts are local purchasing.
- Hanging Bolt - W 3/8 or M10
- Nut - W 3/8 or M10
- Spring Washer - M10
- Plate Washer - M10
2) For new ceilings
(1) Refer to the paper pattern for ceiling opening
dimension.
• The center of the ceiling opening is indicated on the
paper pattern for installation.
The center of the unit is indicated on the label attached
to the unit and on the paper pattern for installation.
• First remove paper packaging material from the
4 corners of the paper pattern for installation , fix the
paper pattern to the unit with screws.
• Ceiling height is shown on the side of the paper pattern
for installation. Adjust the height of the unit according to
this indication.
42 _
Heat pump 60Hz/R410A
Flat washer for M10
(accessory)
Flat washer for M10
(accessory)
Nut
(W3/8 or M10)
Ceiling
Air Conditioner body
Ceiling board
Keep the length of 15±3 mm
(19/32±1/8 inch) between the air
conditioner bottom surface and the
ceiling surface
Set screw of
paper model (4 pieces)
Open the ceiling board
along the outer edge of the
paper model
< Ceiling work >
(2) Adjust the unit to the right position for installation.
(3) Assure that the unit is horizontal.
• The indoor unit is equipped with a built-in drain pump
and float switch. At each of the unit's 3 corners, verify
that it is level by using awater-level or a water-filled
vinyl tube. (Otherwise it will result in the malfunctioning
of unit and cause water to drip.)
(4) Remove the washer fixing plate used for
preventing the washer from falling and tighten
the upper nut.
(5) Remove the paper pattern for installation
3) For existing ceilings
(1) Adjust the height and position of the unit.
(2) Perform steps 3 and 4 in "5.1 For new ceilings".

3.1.6 Connecting pipes to the indoor unit

1) Refrigerant piping work
please refer "REFRIGERANT PIPING WORK".
2) Piping insulation
① Perform heat insulation work completely on both gas and
the liquid pipe. Because improper insulation will result
condensate formation over pipe.
② Use the heat insulation material for the refrigerant piping
which has an excellent heat resistance (over
120℃(248℉)).
③ Precautions in high humidity circumstance:
④ Refer to insulation work
CAUTION
• Make sure to insulate any field piping all the way to the
piping connection inside the unit. Any exposed piping
may cause condensation or burns if touched.