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Features All LG product design criteria have been loaded into the program, making LATS simple to use: double click or drag and drop the component choices. Build systems in Tree Mode where the refrigerant system can be viewed. Switch to a Schematic diagram to see the electrical and communications wiring.
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LATS can generate an Excel GERP report that can be imported into the LG SOPS pricing and ordering system.
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TABLE OF CONTENTS LG Air Conditioner Technical Solution (LATS) ................................. 3-4 Table of Symbols ..........................................6 Product Data ..........................................7-29 Unit Nomenclature ..........................................8 Pairing Table ............................................. 9 ......................................10 General Data ..........................................11-12 Electrical Data ..........................................13 Functions, Controls, Options ..................................... 14-15 Accessories ..........................................
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TABLE OF SYMBOLS DANGER Indicates a hazardous situation that, if not avoided, WILL RESULT IN DEATH OR SERIOUS INJURY. Indicates a hazardous situation that, if not avoided, COULD RESULT IN DEATH OR SERIOUS INJURY. CAUTION Indicates a hazardous situation that, if not avoided, COULD RESULT IN MINOR OR MODERATE INJURY. Indicates information considered important, but not hazard-related;...
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PRODUCT DATA Unit Nomenclature on page 8 Pairing Table on Page 9 Mechanical Specifications on page 10 General Data on page 11 Electrical Data on page 13 Functions, Controls, and Options on page 14 Accessories on page 16 Outdoor Unit Dimensions on page 18 Indoor Unit Dimensions on page 20 Air Flow, Temperature Distribution Graphs on page 22 Acoustic Data on page 28...
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UNIT NOMENCLATURE 1. Refrigerant K = R32 2. Component N = Indoor Unit S = System U = Outdoor Unit 3. Product Category S = Single 4. Product Type A = Wall-Mounted 5. Product Grade P = Extended Piping 6. Nominal Capacity (Btu/h) 24 = 24,000 Btu/h 30 = 30,000 Btu/h 36 = 36,000 Btu/h...
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(3) minutes to ensure temperature can be louvered fins on properly maintained. copper tubing, and LG components are manufactured in a facility registered to ISO 9001 are protected with an and ISO 14001, which is a set of standards applying to environmen- integral coil guard.
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GENERAL DATA Table 3: KSSAP241A KSSAP301A KSSAP361A System (Model) (Indoor Unit / Outdoor Unit) (KNSAP241A / KUSAP241A) (KNSAP301A / KUSAP301A) (KNSAP361A / KUSAP361A) Outdoor Unit Data Cooling (°F DB) 14 to 118 Operating Range Heating (°F WB) -4 to +65...
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Nominal Unit Model Range Compressor Compressor Phase Hertz Voltage MCA MOP LRA Tons (Min. to Quantity Motor RLA Max.) Qty. KSSAP241A 19.0 30.0 17.0 14.4 124 x 1 2-1/2 KSSAP301A 208 - 230 187 - 253 23.0 30.0 17.0 15.1...
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Function can not be used. When changing from Wi-Fi mode to dry contact mode, normal operation resumes in approximately 3 minutes. O: Unit Option Not all controllers can support all features. Contact your LG representative for details. X: Not Available...
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ACCESSORIES LG Monitoring View (LGMV) Diagnostic Software and Cable LG Monitoring View (LGMV) is a maintenance and troubleshooting tool for Multi V™ air conditioning systems. LGMV formats are available for computer or mobile phone use. The main screen for LGMV allows the user to view the following real time data: •...
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Figure 4: Example of an LG Smart ThinQ Screen (appearances my LG ThinQ is a built-in Wi-Fi module, along with a free smart phone app that provides monitoring and differ depending on version of remote control capabilities for certain LG single zone systems. The app has the following features and software).
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CORNER WEIGHT Figure 6: Center of Gravity and Corner Weight Dimensions Diagram. Table 7: Center of Gravity and Corner Weight Dimensions. Weight (lb.) Center of Gravity (inch) Leg (inch) Corner Weight (lb.) Model Shipping KUSAP241A 147.7 135.4 23-7/32 12-19/32 5-29/32 24-13/32 14-13/32 18.6 24.2 49.1...
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AIR FLOW Indoor Unit Air Flow / Temperature Distribution Figure 9: KNSAP241A Air Velocity and Temperature Distribution Charts. Cooling Air Velocity [m/s (ft./s)] Temperature [°C (°F)] 2(6.6) 1(3.3) 22(72) 18(64) 26(79) 0.5(1.6) 28(82) 0.3(1) 8 . 2 26.2 19.7 13.1 6 .
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AIR FLOW Indoor Unit Air Flow / Temperature Distribution Figure 10: KNSAP241A Air Velocity and Temperature Distribution Charts, continued. Heating Air Velocity [m/s (ft./s)] Temperature [°C (°F)] 24(75) 30(86) 32(90) 2(6.6) 1(3.3) 26(79) 0.5(1.6) 0.3(1) 22(72) 8 . 2 26.2 19.7 13.1 6 .
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AIR FLOW Indoor Unit Air Flow / Temperature Distribution Figure 11: KNSAP301A Air Velocity and Temperature Distribution Charts. Cooling Air Velocity [m/s (ft./s)] Temperature [°C (°F)] 0.5(1.6) 1(3.3) 26(79) 0.3(1) 28(82) 2(6.6) 18(64) 22(72) 8 . 2 26.2 19.7 13.1 6 .
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AIR FLOW Indoor Unit Air Flow / Temperature Distribution Figure 12: KNSAP301A Air Velocity and Temperature Distribution Charts, continued. Heating Air Velocity [m/s (ft./s)] Temperature [°C (°F)] 30(86) 2(6.6) 28(82) 0.5(1.6) 26(79) 0.3(1) 1(3.3) 24(75) 8 . 2 26.2 19.7 13.1 6 .
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AIR FLOW Indoor Unit Air Flow / Temperature Distribution Figure 13: KNSAP361A Air Velocity and Temperature Distribution Charts. Cooling Air Velocity [m/s (ft./s)] Temperature [°C (°F)] 0.5(1.6) 1(3.3) 0.3(1) 26(79) 2(6.6) 28(82) 22(72) 18(64) 8 . 2 26.2 19.7 13.1 6 .
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AIR FLOW Indoor Unit Air Flow / Temperature Distribution Figure 14: KNSAP361A Air Velocity and Temperature Distribution Charts, continued. Heating Air Velocity [m/s (ft./s)] Temperature [°C (°F)] 30(86) 2(6.6) 28(82) 0.5(1.6) 26(79) 0.3(1) 1(3.3) 24(75) 8 . 2 26.2 19.7 13.1 6 .
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ACOUSTIC DATA Sound Pressure for Outdoor Units Figure 15: Extended Piping Outdoor Unit Sound Pressure Level • Measurements are taken 3.3 feet away from the front of the unit. Measurement Location. • Sound pressure levels are measured in dB(A) with a tolerance of ±1.
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ACOUSTIC DATA Sound Pressure for Indoor Units Figure 17: Extended Piping Indoor Unit Sound Pressure • Measurements are taken 3.3 feet away from the front of the unit. Level Measurement Location. • Sound pressure levels are measured in dB(A) with a tolerance of ±1. •...
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PERFORMANCE DATA Cooling Capacity on page 31 Maximum Cooling Capacity on page 34 Heating Capacity on page 37 Maximum Heating Capacity on page 40 Correction Factors on page 43...
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APPLICATION GUIDELINES Installing Outdoor Units Indoors on page 51...
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Indoor Units Selecting the Best Location for the Indoor Unit Figure 19: Extended Piping Wall-Mounted Indoor Unit Clearance Requirements. Follow recommended best practices when choosing an indoor location for the single zone Unit: Inch (mm) indoor unit. >5 (120) • Follow the diagram at right for minimum clearance of indoor unit from the top of the unit to >4 (100) >4 (100) the ceiling.
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Indoor Units / Outdoor Units Selecting the Best Location for the Indoor Unit, continued. If the environment is prone to humidity levels of 80% or more (near the ocean, lakes, etc.) or where steam could collect. • Install additional insulation to the indoor unit (glass wool insulation >13/32 inches thick). •...
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Outdoor Units Planning for Snow and Ice To ensure the outdoor unit operates properly, certain measures are required in locations where there is a possibility of heavy snowfall or severe windchill or cold: 1. Prepare for severe winter wind chills and heavy snowfall, even in areas of the country where these are unusual phenomena. 2.
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Outdoor Units Oceanside Applications Figure 22: Prevailing Wind Direc- Figure 23: Leeward Side of the tion. Building. Wind Protection If the outdoor unit is placed on a roof, position it with the compressor end (no coil surface) in the direction of the prevailing wind as shown in the figure at right.
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Outdoor Units Proper clearance for the outdoor unit coil is critical for proper unit operation. When installing the outdoor unit, consider service, inlet and outlet and minimum allowable space requirements as illustrated in the diagrams on the page below. • Include enough space for airflow and for service access. If installing multiple outdoor units, avoid placing the units where the discharge of one unit will blow into the inlet side of an adjacent unit.
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INSTALLING OUTDOOR UNITS INDOORS Installing Outdoor Units Indoors Single Zone outdoor units are engineered to be mounted outdoors and include technology designed to minimize the negative effects of winter weather’s freezing rain, sleet, and snow. Some building projects, however, necessitate placing the HVAC outdoor units indoors: •...
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INSTALLING OUTDOOR UNITS INDOORS Provide a means to drain the condensate generated during heating mode and defrost cycle in addition to rainwater that infiltrates the inlet louver enclosed area. • Install a field-provided drain pan under the outdoor units and provide a path to a nearby floor drain. •...
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INSTALLING OUTDOOR UNITS INDOORS Open Rate by Louver Radian Figure 29: Open Rate by Louver Radian Formula. ho = h * COS Total Area (A) = H * W Number of Open Spaces (N) = (Number of Louvers - 1) Effective Area (Af) = ho * W * N Louver Open Rate (n) = Af / A Af = A * n...
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REFRIGERANT PIPING DESIGN Refrigerant Flow Diagrams on page 55 Connection Limitations and System Layout on page 57 Additional Refrigerant Charge on page 58 Refrigerant Piping System Engineering on page 59...
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Evaporator Temperature Thermistor CN-TH3 (Indoor) Outdoor Air Temperature Thermistor CN-TH1 (Outdoor) Condenser Temperature Thermistor Discharge Pipe Temperature Thermistor CH-TH2 (Outdoor) Table 28: KSSAP241A / KNSAP241A - KUSAP241A Refrigerant Piping / Connection Sizes. Model Vapor (in.) Liquid (in.) KSSAP241A Ø5/8 Ø3/8...
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REFRIGERANT FLOW DIAGRAMS KSSAP301A / KNSAP301A - KUSAP301A, KSSAP361A / KNSAP361A - KUSAP361A Figure 32: KSSAP301A / KNSAP301A - KUSAP301A and KSSAP361A / KNSAP361A - KUSAP361A Refrigerant Flow Diagram. Indoor Unit Outdoor Unit Field Pipin g 2-Way Valve (Copper Tubing) Liquid Side Heat Heat...
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/ standards. For residential applications, a refrigerant charge less than 4.1 lbs. complies with ASHRAE 15.2 and does not require additional calculation/consideration of maximum refrigerant charge for release in a space. Table 31: Single-Zone Extended Piping Refrigerant Piping System Limitations. System Model No. KSSAP241A KSSAP301A KSSAP361A Liquid Piping (in.)
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Always follow local codes when selecting and installing copper pipe and piping system components. Approved piping for use with LG Single Zone products will be marked “R32 RATED” along the length of the pipe. Piping wall thickness must meet local code requirements and be approved for a maximum operating pressure of 626 psi. When bending piping, try to keep the number of bends to a minimum, and use the largest radii possible to reduce the equivalent length of installed piping;...
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REFRIGERANT PIPING SYSTEM ENGINEERING Copper Expansion and Contraction Under normal operating conditions, the vapor pipe temperature of 1. From the “Linear Thermal Expansion of Copper Tubing in Inches” a Single Zone System can vary as much as 280°F. With this large Table on the next page, find the row corresponding with the actual variance in pipe temperature, the designer must consider pipe length of the straight pipe segment.
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Failure to do so will cause significant performance degradation. Proper leak checks must be performed. Using isolation valves does not automatically void any LG product warranty, however, a limited warranty will be voided in whole or part if any field supplied accessory fail in any way that causes product failure.
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REFRIGERANT PIPING SYSTEM ENGINEERING Figure 35: Installing Piping Above and Below an Obstacle. Obstacles When an obstacle, such as an I-beam or concrete T, is in the path of the planned refrigerant pipe run, it is best practice to route the MINIMUM pipe over the obstacle.
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Pipe Sleeves at Penetrations LG recommends that all pipe penetrations through walls, floors, and pipes buried underground be properly insulated and routed through an appropriate wall sleeve of sufficient size to prevent compression of refrigerant pipe insulation and free movement of the pipe within the sleeve.
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ELECTRICAL General Guidelines on page 66 Wiring Diagrams on page 67 Controllers on page 71...
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GENERAL GUIDELINES General Electrical Guidelines • Separately wire the high and low voltage lines. There is a risk of electric shock, physical injury, or death. • may cause physical injury or death. • Power wiring and communication cables must be firmly attached to the terminals; connect the wiring so that the wires cannot be eas- ily pulled out.
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WIRING DIAGRAMS KNSAP241A, KNSAP301A, KNSAP361A Indoor Units Figure 41: KNSAP241A, KNSAP301A, and KNSAP361A Indoor Unit Wiring Diagram. 12 / 24 Table 38: KNSAP241A, KNSAP301A, and KNSAP361A Indoor Unit Wiring Diagram Legend. Terminal Purpose Function CN_MOTOR1 Fan motor output Motor Output of BLDC N / A N / A CN-L/R...
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Figure 42: Circuit Breaker. • LG Extended Piping single zone systems operate at 1Ø, 208-230V, Main Power Source 60Hz; confirm power source specifications • Follow manufacturer’s circuit diagrams displayed on the inside of the control box cover. • It is recommended that a circuit breaker is installed, especially if conditions could become wet or moist.
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Unit to Indoor Unit Figure 44: Single Zone Extended Piping Outdoor Unit to Indoor Unit • Communication / connection (power) cable from the single zone Wiring and Communications Cable Diagram. outdoor unit to the indoor unit must use a minimum of 14 AWG, four (4) conductor, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis of the outdoor unit only), and Communication / Connection...
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Handheld Remote Controller. Single Zone Extended Piping Wall Mounted systems include a wireless handheld remote controller (Part No. AKB76044208). Optional LG-suppled wired controllers are available. See “Functions, Controls, Op- tions”, or contact an LG representative for more information. Wireless Handheld Remote Controller features: •...
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CONTROLLERS Wired Controller Placement Figure 50: Proper Location for the Wired Controller. Wired controllers include a sensor to detect room temperature. To maintain comfort levels in the conditioned space, the wired control- ler must be installed in a location away from direct sunlight, high humidity, and where it could be directly exposed to cold air.
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LG Electronics, U.S.A., Inc. EM_SZ_Extended_Piping_R32_07_25 Air Conditioning Technologies Supersedes: EM_SZ_Extended_Piping_R32_05_25 4300 North Point Parkway EM_SZ_Extended_Piping_R32_01_25 Alpharetta, Georgia 30022 EM_SZ_Extended_Piping_R32_12_24 www.lghvac.com...
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