LG MULTI V S ARUN038GSS4 User Manual

16
MULTI V S System Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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Piping Preparation
GENERAL INSTALLATION GUIDELINES
WARNING
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One of the main causes of refrigerant leaks is defective flared con-
nections. Create flared connections using the procedure below.
1. Cut the pipe to length.
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• Cut the pipes a little longer than measured distance.
2A. Remove the burrs
• Completely remove all burrs from pipe ends.
• When removing burrs, point the end of the copper pipe down to
avoid introducing foreign materials in the pipe.
2B. Remove the flare nuts attached to the indoor and outdoor units.
Slide the flare nut onto the copper tube.
Table 5: Flared Connection Dimensions.
Copper
tube
90°
Slanted Uneven Rough
Pipe
Reamer
Point
down
Flare nut
Copper
tube
Bar
Copper pipe
Clamp handle
Red arrow
Cone
Yoke
Handle
Bar
"A"
Slanted
Inside is shiny with no scratches
Smooth
Even length
Damanged
surface
Cracked Uneven
thickness
Incorrect Flares
1.
2A. 2B.
3.
4.
3. Flaring the pipe end.
• Use the proper size flaring tool to finish flared connections as
shown.
• ALWAYS create a 45° flare when working with R410A.
• Firmly hold copper tube in a bar with a dimension as indicated in
the table below.
4. Carefully inspect the flared pipe end.
• Compare the geometry with the figures and dimensions as detailed.
• If the flare is defective, cut it off and re-do procedure.
• If flare looks good, blow clean the pipe with dry nitrogen.
90°
2
45°
2
A
R=0.4~0.8
Figure 16: Dimensions of the Flare.
Outdoor Unit Pipe Connections
1. Do not use kinked pipe caused by excessive bending in one specific area on its length.
2. Braze the pipes to the service valve pipe stub of the outdoor unit.
3. After brazing, check for refrigerant gas leaks.
4. When selecting flare fittings, always use a 45° fitting rated for use with high pressure refrigerant R410A. Selected fittings must also
comply with local, state, or federal standards.
•
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sion, and physical injury or death.
•
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cal injury or death.
Indoor
Unit
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Pipe “A”
9DSRU
(in.
2'
Liquid
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9DSRULQ /LTXLGLQ
 1/2 1/4 5/8 ~ 11/16 7/16 ~ 1/2
<54,600 5/8 3/8 5/8 ~ 11/16 5/8 ~ 11/16
 3/4 3/8 3/4 ~ 13/16 5/8 ~ 11/16

LG MULTI V S ARUN038GSS4 Specifications

General

Brand	LG
Model	MULTI V S ARUN038GSS4
Category	Air Conditioner
Language	English