Product Data. 50LJS/TJS Single- Package. Features / Benefits. Rooftop Units - 50 Hz 6 to 12 Nominal Tons

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1 Single- Package Rooftop Units - 50 Hz 6 to 12 Nominal Tons Product Data Single package rooftop cooling units with electric heat option. Compact, horizontal discharge units (vertical discharge option), combining installation flexibility with efficient performance. Features / Benefits Higher Cooling Capacity. Standard cooling operation at outdoor ambient temperature as high as 50 C (122 F). Galvanized steel cabinet with powder paint coat. 2-inch (51 mm) return-air filters. Commercial strength base rails (full perimeter). Corrosion-resistant sloped condensate pan. Single power entry to the unit. Commercial duty motors with permanently lubricated bearings. All units feature sloped condensate drain pans in accordance with ASHRAE Standard 62. Also, the new sloped condensate pan permits either an external drain (outside the roof curb) or an internal bottom drain (inside the roof curb). Both options require an external, field supplied disconnect, if desired. Field installed electrical heaters are available in a wide range of capacities. Singe point wiring kit makes installation simple. Simple electrical connections: Terminal boards, located in the base unit control box, facilitate connections to room thermostat, outdoor thermostat (s), economizer, and electrical heat permitting easy servicing. Thru-the-curb service connections accessory allow power and control wiring to be routed through the curb, minimizing roof penetrations. Both power and control connections are made on the same side of the unit to simplify installation. Quite and efficient operation is provided by belt-driven evaporator fans. The belt-driven evaporator fan with variable pitch pulleys allows adjustment to available static pressure to meet the job requirements of even the most demanding applications. -04 PD 50Hz 2011

2 Model Number Nomenclature 50 TJ S SR 50 Cooling Only/Cooling with Optional Electric Heat (Field Installed) LJ Size 007 & 008. TJ Size NE Standard Unit, 50LJS Series. SR Standard Unit, Series. Packaging 1 Standard. 3 Export. S -High Ambient Design Series 3 With Fixed Orifice Expantion. Nominal Capacity in Tons (kw) 50LJS007-6 Tons (21 kw) 50LJS Tons (23 kw) Voltage Tons (24.6 kw) 9 400/ Tons (31.7 kw) Tons (35 kw) Coil Fin Option Tons (44 kw) AL Evaporator, AL Condenser. P Pre-Coated Condenser Coil ( Aluminum Fins ). LEGEND AL Aluminum

3 AHRI Capacity Rating* UNIT NOMINAL TONS STANDARD CFM GROSS COOLING CAPACITY (Btuh) Bels - Sound Levels (1 bel = 10 decibels) EER - Energy Efficiency Ratio *AHRI - Air Conditioning, Heating and Refrigeration Institute. NET COOLING CAPACITY (Btuh) TOTAL kw EER SOUND RATING (Bels) 50LJS ,600 65, LJS ,600 76, ,300 82, , , , , , , Rated in accordance with ARI Standards 210/ or and Net values reflecting the effects of circulating fan heat. 3. Ratings are based on: Cooling Standard: 80 F db, 67 wb indoor entering-air temperature and 95 F db air entering outdoor unit, Horizontal Discharge, 0.4 iwg External Static.

4 Physical data (50 Hz) English UNIT MODEL LJS007 LJ008 TJS008 TJS009 TJS012 TJS014 Electrical Configuration V-PH-Hz (+/- 10%) Nominal Cooling Capacity OPERATING WEIGHT TR Kbtu/hr Unit lbs Economizer lbs Roof Curb lbs COMPRESSOR type Scroll Hermetic, Reciprocating Scroll Quantity no. 1 2 Oil (per compressor) oz REFRIGERANT type R -22 Operating Charge Circuit 1 lbs-oz Circuit 2 lbs-oz CONDENSER FAN type Propellar Quantity. Diameter no.in Nominal CFM CFM Motor* hp rpm hp rpm 1/ / CONDENSER COIL type Enhanced Copper Tubes, Aluminum Double-Wavy Fins Rows Fins/inch no.per in Total Face Area sq. ft EVAPORATOR FAN type Centrifugal Type Quantity. Size no.in x x15 Drive Type type Belt Driven Nominal CFM CFM Input Nominal CFM Watts Motor** hp, rpm hp, rpm 1.5, , , 1425 Max. Continuous Bhp hp Motor Pulley Pitch Dia. in Fan Pulley Pitch Dia. in EVAPORATOR COIL type Enhanced Copper Tubes, Aluminum Double-Wavy Fins Rows Fins / inch no per in Total Face Area sq. ft HIGH PRESSURE SWITCH Psig Standard Compressor IPRV setting Cutout / Reset (Auto) LOW PRESSURE SWITCH Psig Cutout / Reset (Manual) 27 / 44 FREEZE-PROTECTION SWITCH Opens / Closes * Condenser Motor Efficiency: 80%. **Evaporator Motor Efficiency: LJS007,008 = 81%. TJS = 85%. 0 F OUTDOOR AIR INLET SCREENS type Cleanable (With Optional Economizer) Quantity. Size no.in. 1.20x24x1 1 20x25x x25x1 RETURN AIR FILTERS type Throw away Quantity. Size no.in. 2.16x25x x20x2 4 20x20x ± 5 / 45 ± 5

5 Electrical Data 50LJS007,008, ( 50 Hz ) UNIT MODEL 50LJS LJS NOMINAL V-Ph-Hz IFM TYPE VOLTAGE RANGE COMPRESSOR (ea) OFM (ea) IFM ELECTRIC HEAT* POWER SUPPLY DISCONNECT SIZE MIN MAX RLA LRA Qty Hp FLA FLA NOMINAL KW** FLA MCA MOCP FLA LRA STD / STD / STD / STD / STD / STD / LEGEND AND NOTES FOR ELECTRICAL DATA TABLES LEGEND FLA Full Load Amps HACR Heating, Air Conditioning and Refrigeration IFM Indoor (Evaporator) Fan Motor LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection NEC National Electrical Code OFM Outdoor (Condenser) Fan Motor RLA Rated Load Amps *Heater capacity (kw) is based on heater voltage of 208 v, 240 v, 480 v, and 600 v. Heaters are rated at 240 v, 480 v, or 600 v. If power distribution voltage to unit varies from rated heater voltage, heater kw will vary accordingly. To determine heater capacity at actual unit voltage, multiply 240 v, 480 v, or 600 v capacity by multipliers found in table on page 51. Used to determine minimum disconnect size per NEC. **Heaters are field installed only. Fuse or HACR circuit breaker. Fusing in single point box provides the required branch circuit protection. NOTES: 1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. The Canadian units may be fuse or circuit breaker. 2. Unbalanced 3-Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent of voltage imbalance. % Voltage Imbalance max voltage deviation from average voltage = 100 x average voltage Example: Supply voltage is AB = 452 v BC = 464 v AC = 455 v Average Voltage = = 3 = 457 Determine maximum deviation from average voltage. (AB) = 5 v (BC) = 7 v (AC) = 2 v Maximum deviation is 7 v. Determine percent of voltage imbalance. 7 % Voltage Imbalance = 100 x 457 = 1.53% This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%. IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

6 Base unit dimensions 50LJS007,008

7 Base unit dimensions