SINGLE-ZONE FOUR-WAY CEILING-CASSETTE SYSTEM ENGINEERING MANUAL Single-Zone Four-Way Ceiling-Cassette Heat Pump Systems 1.
PROPRIETARY DATA NOTICE This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc., and are disclosed by LG Electronics U.S.A., Inc. only in confidence. This document is for design purposes only. A summary list of safety precautions is on page 3. For more technical materials such as submittals, catalogs, installation, best practices, building ventilation, owner’s, and service manuals, visit www.lghvac.com.
TABLE OF CONTENTS Unit Nomenclature..........................................................................................................................................................................................................4 LG Air Conditioner Technical Solution (LATS) .........................................................................................................................................................5-6 LGRED° Four-Way Ceiling-Cassette Product Data ........................
Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual UNIT NOMENCLATURE Single-Zone Indoor Units and Outdoor Units L N C 188 H H L = LG Frame Type: A: Art Cool™ S: Standard C: Four-Way Ceiling-Cassette D: Ceiling-Concealed Duct (Low Static) H: Ceiling-Concealed Duct (High Static) V: Vertical-Horizontal Air Handling N: Indoor Unit U: Outdoor Unit No N or U: System Nominal Capacity (Nominal cooling capacity in Btu/h): 18 / 188 / 189 = 18,000 36 / 368 / 369 = 36,000 24 / 248 / 249 =
LG AIR CONDITIONER TECHNICAL SOLUTION (LATS) LG Air Conditioner Technical Solution (LATS) Software A properly designed and installed refrigerant piping system is critical to the optimal performance of LG air-conditioning systems. To assist engineers, LG offers, free of charge, LG Air Conditioner Technical Solution (LATS) software—a total design solution for LG air conditioning systems. Contact your LG Rep for the best software program for your application.
Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual LG AIR CONDITIONER TECHNICAL SOLUTION (LATS) LATS Generates a Complete Project Report LATS software also generates a report containing project design parameters, cooling and heating design data, system component performance, and capacity data.
PRODUCT DATA Mechanical Specifications on page 8 General Data on page 10 Electrical Data on page 13 Functions, Controls, and Options on page 14 Outdoor Unit Dimensions on page 15 Outdoor Unit Center of Gravity / Corner Weights on page 17 Indoor Unit Dimensions on page 18 Acoustic Data on page 21 Refrigerant Flow Diagrams on page 25 Wiring Diagrams on page 30 Electrical Connections on page 35 Air Velocity and Temperature Distribution on page 38 Accessories on page 40
MECHANICAL SPECIFICATIONS General Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual System LG single zone four-way ceiling cassette system comprises of a single frame outdoor unit connected to a single indoor unit with a single refrigerant circuit. An LG single zone four-way ceiling cassette is a system that can operate in either cooling or heating mode.
MECHANICAL SPECIFICATIONS Frequency ranges for the 18,000 ~ 48,000 Btu/h outdoor units are: Air Filter - Indoor Unit Coil Return air is filtered with a factory-supplied, removable, washable filter accessible from the bottom of the unit. For 2’ x 2’ cassettes the removable washable filter size is 14” x 14” x 1.” For 3’ x 3’ cassettes the removable washable filter size is 20.5” x 20.5” x 1.
GENERAL DATA Pairing Table Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual The following table shows the available outdoor and indoor unit, along with the factory provided controller. Table 1: Four-Way Ceiling Cassette System Pairing Table 10 Outdoor Unit Model LUU180HHV Indoor Unit Model LCN188HV4 Controller PQWRHQ0FDB LUU240HHV LCN249HV AKB75735404 LUU360HHV, LUU420HHV, LUU480HHV LCN369HV LCN429HV LCN489HV AKB75735404 | PRODUCT DATA 'XH WR RXU SROLF\ RI FRQWLQXRXV SUR
GENERAL DATA EEV: Electronic Expansion Valve, IDU: Indoor Unit, ODU: Outdoor Unit. Unit comes with a dry helium charge. This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft level difference between outdoor and indoor units. Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet bulb (WB); and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual GENERAL DATA Table 3: Single-Zone LGRED Four-Way 3 x 3 Ceiling Cassette System General Data.
ELECTRICAL DATA Table 4: Electrical Data. Nominal Tons Compressor Locked Voltage Unit Model Hertz Voltage Compressor Motor RLA Range MCA MOP Rotor No. Quantity (Min. to Max.) Cooling Heating Amps Outdoor Unit Fan Motor W FLA Indoor Unit Fan Motor W. FLA 2 x 2 Four-Way Ceiling Cassettes 1-1/2 LC188HHV4 60 208 - 230 187 - 253 22 30 22 30 32 40 1 14.5 14.5 23 460 x 1 1.6 x 1 170 0.6 14.5 14.5 23 460 x 1 1.6 x 1 170 230 0.6 1.0 22 22 33 280 x 2 1.6 x 2 260 1.
Table 5: Functions, Controls and Options.
OUTDOOR UNIT DIMENSIONS LUU180HHV, LUU240HHV Figure 5: LUU180HHV, LUU240HHV Outdoor Unit Dimensions. Product Data 'XH WR RXU SROLF\ RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL¿FDWLRQV PD\ FKDQJH ZLWKRXW QRWL¿FDWLRQ © /* (OHFWURQLFV 8 6 $ ,QF (QJOHZRRG &OLIIV 1- $OO ULJKWV UHVHUYHG ³/*´ LV D UHJLVWHUHG WUDGHPDUN RI /* &RUS PRODUCT DATA | 15
OUTDOOR UNIT DIMENSIONS LUU360HHV, LUU420HHV, LUU480HHV Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Figure 6: LUU360HHV, LUU420HHV, LUU480HHV Outdoor Unit Dimensions. 16 | PRODUCT DATA 'XH WR RXU SROLF\ RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL¿FDWLRQV PD\ FKDQJH ZLWKRXW QRWL¿FDWLRQ © /* (OHFWURQLFV 8 6 $ ,QF (QJOHZRRG &OLIIV 1- $OO ULJKWV UHVHUYHG ³/*´ LV D UHJLVWHUHG WUDGHPDUN RI /* &RUS
OUTDOOR UNIT CENTER OF GRAVITY / CORNER WEIGHTS Figure 7: LUU180HHV and LUU240HHV Center of Gravity and Corner Weight Diagram. Table 6: LUU180HHV and LUU240HHV Center of Gravity and Corner Weights. Model No. 144.4 144.4 133.4 133.4 Center of Gravity (in.) a b c 23-7/32 23-7/32 12-19/32 12-19/32 5-29/32 5-29/32 Leg (in.) d e A 24-13/32 24-13/32 14-3/16 14-3/16 18.8 18.8 Corner Weight (lb.) B C 26.4 26.4 51.4 51.4 D 36.7 36.7 Product Data LUU180HHV LUU240HHV Weight (lb.
INDOOR UNIT DIMENSIONS LCN188HV4 Figure 9: LCN188HV4 Indoor Unit Dimensions. Unit: Inch (mm) Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual 11 (279) 7-61/64 (202) 6-3/16 2-51/64 (157) (71) 7-61/64 (202) 5-29/32 (150) 7/64 (3) 2-3/4 (70) 7-9/16 (192) Max.
INDOOR UNIT DIMENSIONS LCN249HV Figure 10: LCN249HV Indoor Unit Dimensions. Note: Product Data 'XH WR RXU SROLF\ RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL¿FDWLRQV PD\ FKDQJH ZLWKRXW QRWL¿FDWLRQ © /* (OHFWURQLFV 8 6 $ ,QF (QJOHZRRG &OLIIV 1- $OO ULJKWV UHVHUYHG ³/*´ LV D UHJLVWHUHG WUDGHPDUN RI /* &RUS PRODUCT DATA | 19
INDOOR UNIT DIMENSIONS LCN369HV, LCN429HV, LCN489HV Figure 11: LCN369HV, LCN429HV, LCN489HV Indoor Unit Dimensions. Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Note: 20 | PRODUCT DATA 'XH WR RXU SROLF\ RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL¿FDWLRQV PD\ FKDQJH ZLWKRXW QRWL¿FDWLRQ © /* (OHFWURQLFV 8 6 $ ,QF (QJOHZRRG &OLIIV 1- $OO ULJKWV UHVHUYHG ³/*´ LV D UHJLVWHUHG WUDGHPDUN RI /* &RUS
ACOUSTIC DATA Indoor Units Figure 12: Indoor Unit Sound Pressure Level Measurement Location. • Measurements taken with no attenuation and units operating at full load normal operating condition. • Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. • Sound pressure levels are measured in dB(A)±1. • Tested in anechoic chamber per ISO Standard 3745.
ACOUSTIC DATA • Data is valid under diffuse field conditions. • Data is valid under nominal operating conditions. • Sound power level is measured using rated conditions, and tested in a reverberation room per ISO 3741 standards. • Sound power level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed • 5HIHUHQFH DFRXVWLF LQWHQVLW\ G% ( ȝ: P2 Table 9: Four-Way Ceiling Cassette Indoor Unit Sound Power Le
ACOUSTIC DATA Outdoor Units • Measurements taken with no attenuation and units operating at full load normal operating condition. • Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. • Sound pressure levels are measured in dB(A)±1. • Tested in anechoic chamber per ISO Standard 3745. Figure 15: Four-Way Ceiling Cassette Outdoor Unit Sound Pressure Level Measurement Location.
ACOUSTIC DATA • Data is valid under diffuse field conditions. • Data is valid under nominal operating conditions. • Sound power level is measured using rated conditions, and tested in a reverberation room per ISO 3741 standards. • Sound power level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed • 5HIHUHQFH DFRXVWLF LQWHQVLW\ G% ( ȝ: P2 Table 11: Four-Way Ceiling Cassette Outdoor Unit Sound Power
REFRIGERANT FLOW DIAGRAMS LCN188HV4 Indoor Units Figure 18: LCN188HV4 Refrigerant Flow Diagram. Gas pipe connection port (flare connection) Heat exchanger Heating Cooling Turbo fan Evaporator Outlet Temperature Thermistor Indoor Air Temperature Thermistor M Evaporator Inlet Temperature Thermistor Table 12: LCN188HV4 Four-Way Ceiling Cassette Indoor Unit Thermistor Details.
REFRIGERANT FLOW DIAGRAMS LCN249HV, LCN369HV Indoor Units Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Figure 20: LCN249HV, LCN369HV Refrigerant Flow Diagram.
REFRIGERANT FLOW DIAGRAMS LCN429HV, LCN489HV Indoor Units Figure 21: LCN429HV, LCN489HV Refrigerant Flow Diagram. : Cooling : Heating Th3 Th2 M (3D Turbo Fan) Product Data Th1 H1 Table 19: LCN429HV, LCN489HV Four-Way Ceiling Cassette Indoor Unit Thermistor Details.
REFRIGERANT FLOW DIAGRAMS LUU180HHV, LUU240HV, LUU360HV Outdoor Units Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Figure 22: LUU180HHV, LUU240HHV, LUU360HHV Refrigerant Flow Diagram. Condenser Outlet Pipe Temperature Thermistor Condenser Middle Pipe Temperature Thermistor Ø3/8 Inch Liquid Side Piping Vapor Side Piping 36,000 Btu/h Outdoor Units have two (2) fans.
REFRIGERANT FLOW DIAGRAMS LUU420HHV, LUU480HHV Outdoor Units Figure 23: LUU420HHV, LUU480HHV Refrigerant Flow Diagram. M S Product Data Table 23: LUU420HHV, LUU480HHV Four-Way Ceiling Cassette Outdoor Unit Thermistor Details.
WIRING DIAGRAMS LCN188HV4 Indoor Units Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Figure 24: LCN188HV4 Four-Way Ceiling Cassette Indoor Unit Wiring Diagram. 30 | PRODUCT DATA 'XH WR RXU SROLF\ RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL¿FDWLRQV PD\ FKDQJH ZLWKRXW QRWL¿FDWLRQ © /* (OHFWURQLFV 8 6 $ ,QF (QJOHZRRG &OLIIV 1- $OO ULJKWV UHVHUYHG ³/*´ LV D UHJLVWHUHG WUDGHPDUN RI /* &RUS
WIRING DIAGRAMS LCN249HV, LCN369HV Indoor Units 07/20 Figure 25: LCN249HV, LCN369HV Four-Way Ceiling Cassette Indoor Unit Wiring Diagram. Product Data 'XH WR RXU SROLF\ RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL¿FDWLRQV PD\ FKDQJH ZLWKRXW QRWL¿FDWLRQ © /* (OHFWURQLFV 8 6 $ ,QF (QJOHZRRG &OLIIV 1- $OO ULJKWV UHVHUYHG ³/*´ LV D UHJLVWHUHG WUDGHPDUN RI /* &RUS PRODUCT DATA | 31
WIRING DIAGRAMS LCN429HV, LCN489HV Indoor Units 07/20 Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Figure 26: LCN429HV, LCN489HV 3x3 Four-Way Ceiling Cassette Indoor Unit Wiring Diagram. 32 | PRODUCT DATA 'XH WR RXU SROLF\ RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL¿FDWLRQV PD\ FKDQJH ZLWKRXW QRWL¿FDWLRQ © /* (OHFWURQLFV 8 6 $ ,QF (QJOHZRRG &OLIIV 1- $OO ULJKWV UHVHUYHG ³/*´ LV D UHJLVWHUHG WUDGHPDUN RI /* &RUS
WIRING DIAGRAMS LUU180HHV, LUU240HHV Outdoor Units Figure 27: LUU180HHV, LUU240HHV Outdoor Unit Wiring Diagram. Product Data 07/20 'XH WR RXU SROLF\ RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL¿FDWLRQV PD\ FKDQJH ZLWKRXW QRWL¿FDWLRQ © /* (OHFWURQLFV 8 6 $ ,QF (QJOHZRRG &OLIIV 1- $OO ULJKWV UHVHUYHG ³/*´ LV D UHJLVWHUHG WUDGHPDUN RI /* &RUS PRODUCT DATA | 33
WIRING DIAGRAMS LUU360HHV, LUU420HHV, LUU480HHV Outdoor Units Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Figure 28: LUU360HHV, LUU420HHV, LUU480HHV Outdoor Unit Wiring Diagram. 07/20 34 | PRODUCT DATA 'XH WR RXU SROLF\ RI FRQWLQXRXV SURGXFW LQQRYDWLRQ VRPH VSHFL¿FDWLRQV PD\ FKDQJH ZLWKRXW QRWL¿FDWLRQ © /* (OHFWURQLFV 8 6 $ ,QF (QJOHZRRG &OLIIV 1- $OO ULJKWV UHVHUYHG ³/*´ LV D UHJLVWHUHG WUDGHPDUN RI /* &RUS
ELECTRICAL CONNECTIONS General Power Wiring / Communications Cable Guidelines • • • • • • Follow manufacturer’s circuit diagrams displayed on the inside of the control box cover. Confirm power source specifications. Properly ground the outdoor unit and the indoor unit per National Electrical Code (NEC) and local codes. Connect the wiring firmly so that the wires cannot be easily pulled out. Confirm that the electrical capacity is sufficient.
ELECTRICAL CONNECTIONS Figure 29: General Four-Way Ceiling Cassette System Power / Communications System Schematic (Appearances May Vary).
ELECTRICAL CONNECTIONS :KHQ XVLQJ ¿HOG VXSSOLHG FRQWUROOHU FDEOH PDNH VXUH WR FRQQHFW WKH \HOORZ WR \HOORZ FRPPXQLFDWLRQV ZLUH UHG WR UHG 9 SRZHU ZLUH DQG EODFN to black (ground wire) terminals from the remote controller to the indoor unit terminal blocks. Figure 32: PZCWRC1 LG Wired Remote Extension Cable. Verify the connectors are properly inserted.
AIR VELOCITY AND TEMPERATURE DISTRIBUTION Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Figure 34: LCN188HV4 Air Velocity and Temperature Distribution Charts. Figure 35: LCN249HV Air Velocity and Temperature Distribution Charts. Heating Cooling Discharge angle: Outer - 30°, Inner - 67° Discharge angle: Outer - 36°, Inner - 70° Air velocity [ft/s] Air velocity [ft/s] 8.9 ft 8.9 ft 6.6 0.8 6.6 0.8 4.9 6.6 ft 6.6 ft 4.9 3.3 4.9 3.3 1.6 3.3 ft 4.9 3.3 0.8 0.8 0.
AIR VELOCITY AND TEMPERATURE DISTRIBUTION Figure 36: LCN369HV Air Velocity and Temperature Distribution Charts. Cooling Heating Discharge angle: Outer - 30°, Inner - 67° Discharge angle: Outer - 36°, Inner - 70° Air velocity [ft/s] Air velocity [ft/s] 10.5 ft 9.8 ft 10.5 ft 9.8 ft 6.6 ft 6.6 ft 8.2 6.6 8.2 0.8 6.6 0.8 4.9 3.3 4.9 1.6 1.6 6.6 3.3 ft 6.6 ft 3.3ft 0 ft 3.3 ft 0.8 Temperature [°F] 3.3 ft 4.9 3.3 0 ft 9.8 ft 13.1 ft 16.4 ft 6.6 ft 6.6 4.9 3.3 16.4 ft 13.1 ft 9.
ACCESSORIES Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual LG Monitoring View (LGMV) Diagnostic Software and Cable LGMV software allows the service technician or commissioning agent to connect a computer USB port to the outdoor unit main printed circuit board (PCB) using an accessory cable without the need for a separate interface device.
ACCESSORIES LG Smart Inverter Monitoring System (SIMS) SIMS can be used to display and graph operational data for single zone systems and respective components (indoor unit and outdoor unit). SIMS also displays error codes and a troubleshooting guide. SIMs consists of a hardware Wireless Local Area Network (WLAN) module, an interface cable, and a free downloadable application (app) for iOS® or Android™.
PERFORMANCE DATA Cooling Capacity Data on page 43 Maximum Cooling Capacity Data on page 48 Heating Capacity Data on page 53 Maximum Heating Capacity Data on page 56 Equipment Selection Procedure on page 59
PERFORMANCE DATA Cooling Capacity LC188HHV4 Cooling Capacity Table for LC188HHV4 (LCN188HV4 + LUU180HHV) Table 25: LCN188HV4 / LUU180HHV Cooling Capacities. Outdoor Air Temp. (°F DB) -4 TC 68 / 57 SHC PI 17.70 12.52 0.83 TC 73 / 61 SHC PI TC 18.80 13.22 0.86 19.89 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC 12.80 0.90 20.69 13.07 PI TC 86 / 72 SHC PI TC 90 / 75 SHC PI 0.91 22.09 13.18 0.92 23.19 13.43 0.94 -0.4 17.69 12.59 0.84 18.79 13.30 0.87 19.
PERFORMANCE DATA Cooling Capacity LC249HHV Cooling Capacity Table for LC249HHV (LCN249HV + LUU240HHV) Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Table 26: LCN249HV / LUU240HHV Cooling Capacities. Outdoor Air Temp. (°F DB) -4 TC 68 / 57 SHC PI 23.60 18.25 1.13 TC 73 / 61 SHC PI TC 25.06 19.28 1.17 26.53 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC 18.66 | 27.58 19.06 TC 86 / 72 SHC PI TC 90 / 75 SHC PI 1.22 29.46 19.22 1.25 30.92 19.
PERFORMANCE DATA Cooling Capacity LC369HHV Cooling Capacity Table for LC369HHV (LCN369HV + LUU360HHV) Table 27: LCN369HV / LUU360HHV Cooling Capacities. Outdoor Air Temp. (°F DB) -4 TC 68 / 57 SHC PI 35.39 26.04 1.69 TC 73 / 61 SHC PI TC 37.59 27.50 1.75 39.79 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC 26.63 1.82 41.38 27.19 PI TC 86 / 72 SHC PI TC 90 / 75 SHC PI 1.84 44.19 27.42 1.87 46.38 27.94 1.91 -0.4 35.37 26.19 1.71 37.57 27.66 1.77 39.77 26.
PERFORMANCE DATA Cooling Capacity LC429HHV Cooling Capacity Table for LC429HHV (LCN429HV + LUU420HHV) Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Table 28: LCN429HV / LUU420HHV Cooling Capacities. Outdoor Air Temp. (°F DB) -4 TC 68 / 57 SHC PI 41.29 31.54 1.94 TC 73 / 61 SHC PI TC 43.86 33.32 2.01 46.42 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC 32.26 | 48.27 32.94 TC 86 / 72 SHC PI TC 90 / 75 SHC PI 2.11 51.55 33.22 2.15 54.11 33.
PERFORMANCE DATA Cooling Capacity LC489HHV Cooling Capacity Table for LC489HHV (LCN489HV + LUU480HHV) Table 29: LCN489HV / LUU480HHV Cooling Capacities. Outdoor Air Temp. (°F DB) -4 TC 68 / 57 SHC PI 47.19 34.27 2.27 TC 73 / 61 SHC PI TC 50.12 36.20 2.35 53.05 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC 35.05 2.44 55.17 35.79 PI TC 86 / 72 SHC PI TC 90 / 75 SHC PI 2.47 58.91 36.09 2.52 61.84 36.78 2.57 -0.4 47.16 34.47 2.30 50.09 36.41 2.38 53.02 35.
PERFORMANCE DATA Maximum Cooling Capacity LC188HHV4 Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Maximum Cooling Capacity Table for LC188HHV4 (LCN188HV4 + LUU180HHV) Table 30: LCN188HV4 / LUU180HHV Maximum Cooling Capacities. Outdoor Air Temp. (°F DB) -4 TC 68 / 57 SHC PI 24.38 16.10 1.69 TC 73 / 61 SHC PI TC 25.90 17.00 1.75 27.41 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC 16.46 | 28.50 16.81 TC 86 / 72 SHC PI TC 90 / 75 SHC PI 1.
PERFORMANCE DATA Maximum Cooling Capacity LC249HHV Maximum Cooling Capacity Table for LC249HHV (LCN249HV + LUU240HHV) Table 31: LCN249HV / LUU240HHV Maximum Cooling Capacities. Outdoor Air Temp. (°F DB) -4 TC 68 / 57 SHC PI 29.49 19.47 1.77 TC 73 / 61 SHC PI TC 31.33 20.57 1.84 33.16 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC 19.92 1.91 34.48 20.34 PI TC 86 / 72 SHC PI TC 90 / 75 SHC PI 1.93 36.82 20.51 1.96 38.65 20.90 2.00 -0.4 29.48 19.59 1.79 31.
PERFORMANCE DATA Maximum Cooling Capacity LC369HHV Maximum Cooling Capacity Table for LC369HHV (LCN369HV + LUU360HHV) Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Table 32: LCN369HV / LUU360HHV Maximum Cooling Capacities. Outdoor Air Temp. (°F DB) -4 TC 68 / 57 SHC PI 45.22 31.14 3.20 TC 73 / 61 SHC PI TC 48.03 32.89 3.32 50.84 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC 31.85 | 52.87 32.52 TC 86 / 72 SHC PI TC 90 / 75 SHC PI 3.48 56.
PERFORMANCE DATA Maximum Cooling Capacity LC429HHV Maximum Cooling Capacity Table for LC429HHV (LCN429HV + LUU420HHV) Table 33: LCN429HV / LUU420HHV Maximum Cooling Capacities. Outdoor Air Temp. (°F DB) TC 73 / 61 SHC PI TC 51.17 36.00 3.37 54.16 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC TC 68 / 57 SHC PI -4 48.17 34.08 3.25 -0.4 48.15 34.27 3.29 51.14 36.21 3.41 54.13 35.06 5 48.11 34.57 3.34 51.10 36.52 3.47 54.08 35.36 34.85 3.
PERFORMANCE DATA Maximum Cooling Capacity LC489HHV Maximum Cooling Capacity Table for LC489HHV (LCN489HV + LUU480HHV) Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Table 34: LCN489HV / LUU480HHV Maximum Cooling Capacities. Outdoor Air Temp. (°F DB) -4 TC 68 / 57 SHC PI 52.11 37.84 3.44 TC 73 / 61 SHC PI TC 55.34 39.97 3.57 58.58 Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 SHC PI TC SHC 38.70 | 60.92 39.52 TC 86 / 72 SHC PI TC 90 / 75 SHC PI 3.74 65.
PERFORMANCE DATA Heating Capacity LC188HHV4, LC249HHV Heating Capacity Table for LC188HHV4 (LCN188HV4 + LUU180HHV) Table 36: LCN188HV4 / LUU180HHV Heating Capacities. Outdoor Air Temp. °F WB -13 -4 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -13.4 -4.4 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 64 TC PI TC PI 7.63 10.24 11.45 12.88 13.84 14.89 15.53 16.61 17.69 18.78 19.73 20.93 21.41 21.47 21.58 21.68 21.74 21.81 1.15 1.23 1.27 1.31 1.35 1.41 1.44 1.48 1.52 1.56 1.60 1.64 1.66 1.65 1.
PERFORMANCE DATA Heating Capacity LC369HHV, LC429HHV Heating Capacity Table for LC369HHV (LCN369HV + LUU360HHV) Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Table 37: LCN369HV / LUU360HHV Heating Capacities. Outdoor Air Temp. °F DB °F WB -13 -4 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -13.4 -4.4 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 61 64 TC PI TC PI 9.45 16.04 19.08 22.70 25.12 27.78 29.40 32.10 34.83 37.55 39.47 41.86 42.82 42.94 43.15 43.36 43.49 43.
PERFORMANCE DATA Heating Capacity LC489HHV Heating Capacity Table for LC489HHV (LCN489HV + LUU480HHV) Table 39: LCN489HV / LUU480HHV Heating Capacities. Outdoor Air Temp. °F WB -13 -4 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -13.4 -4.4 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 64 TC PI TC PI 11.12 19.96 24.04 28.89 32.14 35.71 37.88 41.50 45.16 48.82 51.31 54.42 55.66 55.83 56.10 56.37 56.53 56.70 2.36 2.55 2.63 2.74 2.83 2.96 3.04 3.13 3.23 3.32 3.40 3.51 3.55 3.53 3.49 3.45 3.43 3.
PERFORMANCE DATA Maximum Heating Capacity LC188HHV4, LC249HHV Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Maximum Heating Capacity Table for LC188HHV4 (LCN188HV4 + LUU180HHV) Table 40: LCN188HV4 / LUU180HHV Maximum Heating Capacities. Outdoor Air Temp. °F DB °F WB -13 -4 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -13.4 -4.4 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 61 64 TC PI TC PI 17.12 19.19 20.17 21.41 22.56 24.08 24.27 24.45 24.68 24.86 25.05 25.28 25.
PERFORMANCE DATA Maximum Heating Capacity LC369HHV, LC429HHV Maximum Heating Capacity Table for LC369HHV (LCN369HV + LUU360HHV) Table 42: LCN369HV / LUU360HHV Maximum Heating Capacities. Outdoor Air Temp. °F WB -13 -4 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -13.4 -4.4 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 64 TC PI TC PI 32.11 38.50 40.42 42.82 43.60 44.64 45.29 45.95 46.77 47.43 48.09 48.91 49.24 49.38 49.63 49.87 50.01 50.16 5.22 5.83 5.97 6.14 5.84 5.62 5.44 5.26 5.03 4.84 4.
PERFORMANCE DATA Maximum Heating Capacity LC489HHV Maximum Heating Capacity Table for LC489HHV (LCN489HV + LUU480HHV) Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Table 44: LCN489HV / LUU480HHV Maximum Heating Capacities. Outdoor Air Temp. °F DB °F WB -13 -4 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -13.4 -4.4 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 61 64 TC PI TC PI 38.51 46.82 50.75 55.66 56.81 58.34 59.33 60.33 61.57 62.56 63.56 64.80 65.30 65.49 65.
EQUIPMENT SELECTION PROCEDURE Cooling / Heating Correction Factors For Four-Way Ceiling Cassette systems, calculate the equivalent length of the liquid line from the outdoor unit to the indoor unit. Also, determine the elevation difference of the indoor unit above or below the outdoor unit. Find corresponding cooling or heating capacity correction factors as shown below. Multiply the correction factors by the cooling or heating capacity obtained from the capacity table using design conditions.
EQUIPMENT SELECTION PROCEDURE Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Defrost Correction Factor for Heating Operation The outdoor unit heating capacity will need to be adjusted for frost accumulation on air-cooled systems. If design day conditions are below the dewpoint of the surrounding air, frost will not be a problem and no correction factor is needed.
APPLICATION GUIDELINES Placement Considerations on page 62 Installing Outdoor Units Indoors on page 70 Refrigerant Piping Design on page 73
PLACEMENT CONSIDERATIONS Indoor Unit WARNING 7KH XQLW VKRXOG QRW EH LQVWDOOHG ZKHUH VXOIXULF DFLG DQG ÀDPPDEOH RU FRUURVLYH JDVHV DUH JHQHUDWHG YHQWHG LQWR RU VWRUHG 7KHUH LV ULVN RI ¿UH explosion, and physical injury or death. Figure 40: Indoor Unit Clearance Requirements.
PLACEMENT CONSIDERATIONS Indoor Unit • Indoor units (IDUs) should not be placed in an environment where the IDUs will be exposed to harmful volatile organic compounds (VOCs) or in environments where there is improper air make up or supply or inadequate ventilation. If there are concerns about VOCs in the environment where the IDUs are installed, proper air make up or supply and / or adequate ventilation should be provided.
PLACEMENT CONSIDERATIONS Outdoor Unit Selecting the Best Location for the Outdoor Unit Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual DANGER • Do not install the unit in an area where combustible gas will generate, flow, stagnate, or leak. These conditions can cause a fire, resulting in bodily injury or death. • Do not install the unit in a location where acidic solution and spray (sulfur) are often used as it can cause bodily injury or death.
PLACEMENT CONSIDERATIONS Outdoor Unit Planning for Snow and Ice, continued. When deciding on a location to place the outdoor unit, be sure to choose an area where run-off from defrost will not accumulate and freeze on sidewalks or driveways, which will create unsafe conditions. Properly install and insulate any drain hoses to prevent the hose from freezing, cracking, leaking, and causing unsafe conditions from frozen condensate.
PLACEMENT CONSIDERATIONS Outdoor Unit Oceanside Applications Figure 45: Oceanside Placement Using Windbreak. Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Use of a Windbreak to Shield from Sea Wind Windbreak Ocean winds will cause corrosion, particularly on the condenser and HYDSRUDWRU ¿QV ZKLFK LQ WXUQ FRXOG FDXVH SURGXFW PDOIXQFWLRQ RU LQHI¿FLHQW SHUIRUPDQFH • • • • • • Avoid installing the outdoor unit where it would be directly exposed to ocean winds.
PLACEMENT CONSIDERATIONS Outdoor Unit Minimum Allowable Clearance and Service Access Requirements 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 below and on the following pages. avoid placing the units where the discharge • Include enough space for airflow and for service access.
PLACEMENT CONSIDERATIONS Outdoor Unit When installing the outdoor unit, consider service, inlet, and outlet, and minimum allowable space requirements as illustrated in the following diagrams.
PLACEMENT CONSIDERATIONS Outdoor Unit Obstacles above and on the air discharge side. " Obstacle just on the air discharge side. m imu 6 11/1 19- Where there are obstacles on both suction and discharge sides (discharge side obstacle is higher than the outdoor unit). Minimum 39-3/8" Min um im Min 3/16 1-1 m1 6" 11/1 u inim 19- " M um im Min 11 19- " M Where there are obstacles above, and on both suction and discharge sides (discharge side obstacle is higher than the outdoor unit).
PLACEMENT CONSIDERATIONS Installing Outdoor Units Indoors Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual Installing Outdoor Units Indoors Single Zone Cassette 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: • Lack of ground space.
PLACEMENT CONSIDERATIONS 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.
PLACEMENT CONSIDERATIONS Installing Outdoor Units Indoors Open Rate by Louver Radian W h ho H 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 Side View Effective Cross Section Area Front View Confirming Air Flow Rate / Total Opening Rate Figure 51: Example of Installing Outdoor Unit Indoors. • Example: LSU180HSV5. Louver Dimensions • Discharge Airflow Rate: 2,119 ft.3/min.
REFRIGERANT PIPING DESIGN Device Connection Limitations A single-zone system consists of one outdoor unit and one indoor unit. One of the most critical elements of a single-zone system is the refrigerant piping. If the connection piping is not within allowable limits, there will be reliability, performance, noise, and vibration issues. The table below lists pipe length limits that must be followed in the design of a Single Zone LGRED Four-Way Ceiling-Cassette refrigerant pipe system.
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