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Figure 24: High-Static Ducted (B8) Indoor Unit
Piping Connection
Dimensions.
Condensate
Pump
(Primary)
Vapor Line
Gravity Condensate
Table 18: Ducted Indoor Unit Pipe Connections (in.).
Size /
Liquid Line
Chassis
Dia.
Conn.
L14
1
High-Static Ducted Indoor Units
7-18 M1 1/4
45° Flare 10-13/32 7-7/32
24 M2
1/4
45° Flare 10-13/32 7-7/32
7-18 M2 1/4
45° Flare 10-13/32 7-7/32
24-42 M2 3/8
45° Flare 10-13/32 7-7/32
28-54 M3 3/8
45° Flare 7-15/16 7-3/8
36-76 B8 3/8
Brazed
2-1/2
96 B8
3/8
Brazed
2-1/2
Low-Static Convertible Ducted Indoor Units
Liquid Line
Frame
Dia.
Conn.
L6
1
L1
1/4
45° Flare
3-7/8
L2
1/4
45° Flare
3-7/8
L3
3/8
45° Flare
3-7/8
Inches I.D.
1
Refrigerant Safety
Verify the maximum refrigerant concentration in the space where the indoor unit will be mounted meets the concentration limit
allowed by ASHRAE Standards 15-2010 and 34-2010. There is danger of asphyxiation from oxygen displacement.
ASHRAE Standards 15-2010 and 34-2010 offer guidelines that address refrigerant safety and the maximum allowable concentration of
refrigerant in an occupied space. Refrigerant will dissipate into the atmosphere, but a certain volume of air is required for this to occur safely.
For R410A refrigerant, the maximum allowable concentration of refrigerant is twenty-six (26) lbs. per 1,000 cubic feet of an occupied space.
Buildings with twenty-four (24) hour occupancy allow half of that concentration.
ASHRAE Standards 15 and 34 assume that if a system develops a leak, its entire refrigerant charge will dump into the area where the leak
occurs. To meet ASHRAE Standards 15 and 34, calculate the refrigerant concentration that may occur in the smallest room volume on the
system, and compare the results to the maximum allowable concentration number.
refrigerant safety.
Information about ASHRAE Standard 15-2010 / 34-2010 and addenda current as of the date of this publication.
1
Figure 25: Low-Static Convertible Ducted
(L1/L2/L3) Indoor Unit Piping Connection
L11
L13
L14
L10
L21
L9
L18
L11
L17
L16
L15
L6
Liquid Line
L20
L7
L5
L12
Vapor Line
Vapor Line
L17
Dia.
Conn.
1
1/2
45° Flare 8-21/32 5-15/32 1.0
5/8
45° Flare 8-21/32 5-15/32 1.0
1/2
45° Flare 8-21/32 5-15/32 1.0
5/8
45° Flare 8-21/32 5-15/32 1.0
5/8
45° Flare 5-5/32
5-1/2
3/4
Brazed
5-1/4
5-1/2
7/8
Brazed
5-1/4
Vapor Line
L9
Dia.
Conn.
1
7-1/4
1/2
45° Flare
7-1/4
5/8
45° Flare
7-1/4
5/8
45° Flare
Plastic Resin
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.
Dimensions.
Condensate
Liquid Line
Auxiliary Drain
Vapor Line
Condensate Pump Drain
L13
L16
Dia.
Conn.
1
2
Plain
Plain
Plain
Plain
5-1/2
1.0
Plain
4-3/4
1.0
Plain
4-3/4
1.0
Plain
Condensate Pump (Primary)
L7
L10
Dia.
Conn.
1
2
3-1/2
4-1/2 1.0
Plain
3-1/2
4-1/2 1.0
Plain
3-1/2
4-1/2 1.0
Plain
14 Threads Per Inch, Straight Thread
3
1
Also consult state and local codes in regards to
1
INSTALLATION
Piping Connections
Figure 26: High-Static Ducted (M1/M2/M3) Indoor
Unit Piping Connection Dimensions.
L12
L17
L18
L13
L15
L16
L14
L11
Gravity Drain (Plugged)
L11
L18
Dia.
Conn.
3
14-9/32 6-19/32 1.0"-14 MPT
14-9/32 6-19/32 1.0"-14 MPT
14-9/32 6-19/32 1.0"-14 MPT
14-9/32 6-19/32 1.0"-14 MPT
12-23/32 6-27/32 1.0"-14 MPT
7-5/8
6-7/8
1.0"-14 MPT
7-5/8
6-7/8
1.0"-14 MPT
Auxiliary Drain Connection
L5
L11
Dia.
Conn.
1
2
11-1/2 1.0
Plain
2
11-1/2 1.0
Plain
2
11-1/2 1.0
Plain
Condensate
Liquid Line
Vapor Line
Auxiliary Drain
L12
L15
2
9-1/4
7/8
9-1/4
7/8
9-1/4
7/8
9-1/4
7/8
6-3/4
1-3/32
7-5/8
1-1/4
7-5/8
1-1/4
L20
L21
2
6-3/8
9-3/4
6-3/8
9-3/4
6-3/8
9-3/4
39
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