(60Hz) Single-Package Air Conditioners 3-5 Nominal Tons Product Data The is a package air conditioner for manufactured housing, residential, and light commercial applications. The unit design is the result of our firm commitment to the development of the finest air conditioners that modern technology can offer. The unit is built in one basic cabinet size and features rectangular duct configuration on sizes 036-060. Features/Benefits FACTORY-ASSEMBLED PACKAGE is a compact, fully self-contained, electric cooling unit with horizontal supply and return ducts. The units are available in a variety of standard cooling sizes with voltage options to meet residential and light commercial requirements. Unit installs easily on a ground level pad. EASY TO INSTALL units are small, compact, and easy to handle. Every unit has an identical 32 x 51-in. footprint to make planning simple. The concise design uses less sheet metal and makes the units lighter than other units. The unit can be easily positioned on the jobsite with the hand-holds built into the unit basepan. Drop-in cartridge style heaters are utilized to minimize installation time. The unit was designed with potential safety hazards in mind; with no sharp edges or corners which could injure a worker. NEW IMPROVED AERODYNAMIC FAN BLADE DESIGN reduces the overall sound by up to 6dB; now as low as 78dB. TOP COVER SERVICE ACCESS Makes installation and maintenance quicker and easier. The units are designed to be serviced from the top. The split-top design allows easy access for installation and maintenance procedures of the unit. Routine maintenance tasks such as coil cleaning are sped up with through-thetop access. Multiple side panels do not need to be removed as with other units. NO-RUST BASEPAN WITH INTEGRATED DRAIN PAN Is standard on all units. The units feature a toug hightech, composite material basepan with integrated drain pan. The composite material eliminates the potential problems of rust and premature replacement which are common with standard metal basepans. Durable oven backed polyester powder painted galvanized steel) protects against harsh weather. -04 PD 2011
The watertight construction and corrosionresistant finish of the unit will keep it looking like new for years. The paint treatment process ensures quality protection against the elements. INDOOR AIR QUALITY is designed into the units. A sloped drain pan minimizes the amount of standing water inside the unit, which limits mold and mildew growth. The drain pan is made of a rust-proof material and will not deteriorate or release foreign matter into the airstream. LIGHTWEIGHT, COMPACT CONSTRUCTION is ideal for manufactured housing and residential applications. The unit is one of the lightest, most compact packaged units ever designed. It s light weight (250 lbs for the 036 unit) makes the unit easier to handle. The low height keeps ductwork connections to a minimum and makes units less visible. The units utilize a structural beam design to form the four sides of the cabinet. Only 12 different pieces of sheet metal are used in the unit construction to simplify the unit for greater reliability. EFFICIENT, DEPENDABLE PERFORMANCE with durable compressors designed for efficiency. The units offer 9.5 SEER (Seasonal Energy Efficiency Ratio) cooling performance efficiencies. This performance level can reduce cooling expenses by as much as 25% compared to older cooling equipment. A high-eficiency, multi-speed blower motor system ensures quality performance with most duct systems. The computer-designed blower wheel is balanced for quiet operation. DURABLE, DEPENDABLE, COMPRESSORS are designed for high efficiency. Each compressor is hermetically sealed against contamination to help promote longer life and dependable operation. Vibration isolation provides quiet operation. Compressors have internal high-pressure and overcurrent protection. DIRECT-DRIVE MULTISPEED, PSC (PERMANENT SPLIT CAPACITOR) BLOWER MOTOR is standard on all models. Direct-drive, PSC condenser-fan motors are designed to help reduce energy consumption and provide for cooling operation down to 40 F. REFRIGERANT SYSTEM is designed to provide dependability. Liquid refrigerant strainers are used to promote clean, unrestricted operation. Each unit leaves the factory with a full refrigerant charge. Refrigerant service connections make checking operating pressures easier. Controls Contains high- and low-pressure switches to protect the unit from running at unsuitable pressures. Provides additional safety features when needed. Solid-State Time Guard Device Provides a 5-minute delay in compressor operation between cooling cycles.prevents compressor short cycling when rapid compressor cycles may be a problem. FIELD-INSTALLED ACCESSORY DESCRIPTION AND USAGE Electric Heater Heater module slides into keyed mounting slots in the fan inlet. Heater sizes range from 5.0 to 20.0 kw. Design allows for single-point supply for entire unit. Heaters provide heating capability when required. Crankcase Heater Warms crankcase oil to reduce refrigerant migration and ensure proper compressor lubrication. (Field Installed). Outdoor Thermostat Accessory provides control when outdoor-air temperature falls below set point. Helps to bring second stage of 2-stage electric heater on line. AHRI* capacity ratings UNIT Gross SOUND STANDARD COOLING SEER # RATINGS ## CAPACITY** (db) 036 35,500 1200 9.5 78 042 41,700 1400 9.5 78 048 47,700 1600 9.5 78 060 62,120 2000 9.5 80 NOTES: 1. Ratings are gross values, excluding the effects of circulating fan heat. 2. Cooling capacity ratings are based on cooling standard: 80 F db/67 F wb indoor air entering temperature 95 F db air entering outdoor unit LEGEND db Dry Bulb db decibels SEER Seasonal Energy Efficiency Ratio wb Wet Bulb * Air Conditioning, Heating & Refrigeration Institute. ** Rated in accordance with U.S. Government DOE Department of Energy) test procedures and/or AHRI Standard 210/240-89. # All units have factory-installed time-delay relay. ## Rated in accordance with AHRI Standard 270-84. Table of contents Page Features/Benefits........................................................................................................... 1 AHRI Capacity Ratings...................................................................................................... 2 Model Nomenclature........................................................................................................ 3 Physical Data.............................................................................................................. 3 Dimensional Drawings..................................................................................................... 4-7 Performance Data........................................................................................................ 8-10 Typical Wiring Schematics................................................................................................ 11-13 Selection Procedure.........................................................................................................13 Electrical Data............................................................................................................ 14 Operating Sequence........................................................................................................ 15 Typical Installation......................................................................................................... 15 Application Data........................................................................................................... 16 Engineers Specification Guide............................................................................................... 16 2
MODEL NUMBER NOMENCLATURE 036-5 1 1 S Packaged Rooftop - Electric Cooling - Electric Heater Accessory Nominal Cooling Capacity 036 3 Tons 042 3.5 Tons 048 4 Tons 060 5 Tons Electrical Supply 3-208/230-1-60 5-208/230-3-60 High Ambient Standard Series Physical Data UNIT SIZE 036 042 048 060 Operating Weight (lb) 250 297 310 350 Compressor Type Reciprocating Refrigerant R-22 Charge (lb) 4.7 4.4 6.1 7.5 Refrigerant Metering Device Acutrol TM System Condenser Coil Copper Tubes, Aluminum Plate Fins Rows Fins/in. 1 17 1 17 2 17 2 17 Total Face Area (sq ft) 6.2 11.1 8.6 10.7 Condenser Motor Propeller Condenser Cfm 2200 2800 2800 3000 Nominal Rpm 1100 1100 1100 1100 Motor Hp (Rpm) ¼ ¼ ¼ ¼ Diameter (in.) 20 20 20 20 Evaporator Fan Motor Direct Drive Blower Motor Size (in.) 10 8 10 9 10 9 10 10 Nominal Cfm 1200 1400 1600 2000 Rpm Range 800 1000 800 1000 900-1075 950 1100 Number of Speeds 3 3 2 2 Factory Speed Setting Low Med Low Low Motor Hp ½ ½ ¾ 1 Connecting Duct Sizes Square Supply Air (in.) 13.9 10.9 13.9 13.9 Return Air (in.) 13.9 11.5 13.9 27.8 Field- Supplied Return Air Filter* Throwaway 24 24 1 24 24 1 24 30 1 24 30 1 Required filter sizes shown are based on the AHRI (Air conditioning, Heating & Refrigeration Institute) rated airflow at a velocity of 300 ft/minute for throwaway type or 450 ft/minute fir high-capacity type. Recommended filters are 1-in. think. 3
Dimensional drawings 036 D C Corner weights distribution (kg) Corner A Corner B Corner C Corner D weight weight weight weight 25 39 30 20 A B 4
Dimensional drawings 042 D C Corner weights distribution (kg) Corner A Corner B Corner C Corner D weight weight weight weight 30 46 36 23 A B 5
Dimensional drawings 048 D C Corner weights distribution (kg) Corner A Corner B Corner C Corner D weight weight weight weight 31 48 38 24 A B 6
Dimensional drawings 060 D C Corner weights distribution (kg) Corner A Corner B Corner C Corner D weight weight weight weight 35 55 42 27 A B 7
Cooling capacities (Gross) 036 EVAPORATOR CONDENSER AIR TEMPERATURE (F) AIR 85 95 105 115 125 Cfm BF F Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Ewb Total Sensible kw Total Sensible kw Total Sensible kw Total Sensible kw Total Sensible kw 72 39.8 19.9 3.65 37.9 19.2 3.83 35.9 18.6 4.02 33.8 18 4.20 31.90 17.20 4.69 1050 0.08 67 36.7 25.5 3.53 34.7 24.8 3.71 32.7 24 3.88 30.7 23.4 4.05 28.10 21.26 4.41 62 33.3 30.6 3.42 31.5 29.7 3.59 29.6 28.7 3.75 27.8 27.7 3.91 23.70 23.69 4.26 72 40.9 21 3.74 38.8 20.4 3.92 36.8 19.9 4.11 34.3 19 4.27 32.80 18.53 4.73 1200 0.10 67 37.5 27.3 3.61 35.5 26.6 3.79 33.4 25.8 3.96 31.4 25.1 4.14 29.10 23.16 4.46 62 34.3 32.8 3.15 32.4 31.8 3.67 30.6 30.6 3.84 29 29 4.03 25.30 25.35 4.33 72 41.3 21.9 3.80 39.4 21.5 3.99 37.2 20.7 4.17 35 20.1 4.36 33.50 19.70 4.78 1350 0.11 67 38.4 29.2 3.70 36.2 28.3 3.87 34.1 27.5 4.03 32 26.8 4.21 30.10 25.27 4.53 62 35.1 34.8 3.59 33.4 33.4 3.76 31.8 31.8 3.94 30.1 30.1 4.13 27.30 26.17 4.30 042 EVAPORATOR CONDENSER AIR TEMPERATURE (F) AIR 85 95 105 115 125 Cfm BF F Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Ewb Total Sensible kw Total Sensible kw Total Sensible kw Total Sensible kw Total Sensible kw 72 47.5 23.4 4.19 45 22.5 4.39 42.4 21.6 4.60 39.7 20.7 4.81 36.40 20.35 5.20 1225 0.11 67 40.3 26.9 3.89 39.7 27.4 4.17 37.8 27 4.40 35.5 26.4 4.62 31.80 26.31 4.90 62 37.6 33.1 3.81 36 32.8 4.03 34.1 32.1 4.25 31.8 31.1 4.45 29.10 29.10 4.70 72 48.7 24.7 4.28 46 23.8 4.49 43.4 22.9 4.70 40.5 22 4.89 37.60 22.06 5.24 1400 0.12 67 39.8 27.1 3.92 41.7 28.9 4.24 38.6 28.9 4.49 36.3 28.3 4.71 32.80 28.69 4.96 62 38.2 34.6 3.88 36.9 34.9 4.13 34.9 34.3 4.34 33 33 4.56 30.90 30.90 4.82 72 49.6 26 4.37 46.8 25.1 4.58 44 24.1 4.78 41.2 23.2 4.98 38.50 23.65 5.27 1575 0.14 67 39.1 26.9 3.95 40.4 29.9 4.30 39.3 30.6 4.57 37.1 30.2 4.80 33.90 31.04 5.02 62 38 35.1 3.93 37.6 36.6 4.21 35.9 35.8 4.44 34.2 34.2 4.68 32.60 32.60 4.92 LEGEND 3. The sensible heat capacity is based on 80 F edb temperature of air BF Bypass Factor entering indoor coil. Ewb Entering Wet Bulb Below 80 F edb, subtract (corr factor x cfm) from the sensible heat Idb Leaving Dry Bulb capacity. Iwb Leaving Wet Bulb Above 80 F edb, add (corr factor x cfm) to the sensible heat MBtuh 1000 Btuh (gross) capacity. Correction Factor = 1.10 x (1 BF) x (edb 80). NOTES: 1. Direct interpolation is permissible. Do not extrapolate. 2. The following formulas may be used: sensible capacity (MBtuh x 1000) t = t ldb edw 1.10 x cfm t lwb = Wet-bulb temperature corresponding to enthalpy of air leaving indoor coil (h lwb ) h lwb = h ewb Where: total capacity (MBtuh x 1000) 4.5 cfm h ewb = Enthalpy of air entering indoor coil 8
Cooling capacities (cont) 048 EVAPORATOR CONDENSER AIR TEMPERATURE (F) AIR 85 95 105 115 125 Cfm BF F Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Ewb Total Sensible kw Total Sensible kw Total Sensible kw Total Sensible kw Total Sensible kw 72 46.8 22.5 4.42 48.5 24.6 4.88 47.3 24.9 5.23 42.6 44.4 24.1 41.80 23.48 6.01 1400 0.06 67 45.6 31.2 4.41 45.4 32.6 4.77 42.9 31.9 5.03 38.1 39.9 31 36.50 29.77 5.72 62 43.5 39.6 4.34 41.4 39.2 4.60 38.9 38.2 4.85 34.6 36.4 36.4 33.00 33.00 5.49 72 45.4 22 4.42 48.1 24.3 4.89 48 26.1 5.33 42.9 45.1 25.6 43.00 25.13 6.83 1600 0.07 67 44.4 30.6 4.42 47.7 34.3 4.86 43.7 34.2 5.14 38.5 40.7 33.4 37.80 32.42 5.79 62 43.7 41.1 4.42 42.3 41.7 4.72 40.2 40.2 4.98 35.7 37.9 37.9 35.10 35.10 5.60 72 44.1 22.4 4.44 46.2 24 4.90 47.7 26.7 5.38 43.2 45.8 27 44.00 26.74 6.11 1800 0.08 67 43.3 30.2 4.43 45.3 34.7 3.90 44.3 36.3 5.25 38.7 41.3 35.6 38.90 34.83 5.85 62 42.7 40 4.44 43.1 43 4.83 41.5 41.4 5.12 36.7 39.3 39.2 36.90 36.90 5.69 060 EVAPORATOR CONDENSER AIR TEMPERATURE (F) AIR 85 95 105 115 125 Cfm BF F Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Capacity MBtuh Compressor Ewb Total Sensible kw Total Sensible kw Total Sensible kw Total Sensible kw Total Sensible kw 72 68.1 33.4 6.22 67.6 34 6.78 64.3 33 7.22 60.5 31.8 7.60 54.8 30.4748 8.16 1750 0.06 67 64.8 44.3 6.16 61.2 43.1 6.55 57.9 41.6 6.87 54.3 40.4 7.27 47.6 38.51 7.59 62 57.1 50.8 5.80 55 50.4 6.21 52.1 49.5 6.60 48.9 48.2 6.97 42.9 42.9 8.40 72 66.5 33.42 6.23 68.4 35.52 6.90 65.62 35.12 7.38 61.6 33.62 7.75 56.32 32.912 8.16 2000 0.07 67 66.1 47.22 6.30 62.1 46.32 6.72 58.82 44.32 7.01 55.6 43.52 7.43 49.32 41.928 7.70 62 55.9 50.52 5.82 56.1 53.82 6.35 53.52 52.92 6.76 50.8 50.72 7.17 45.72 45.72 7.40 72 64.8 32.8 6.23 67.9 36.1 6.95 66.5 36.8 7.51 62.5 35.4 7.88 57.6 34.92 8.21 2250 0.08 67 67.3 50.1 6.43 63.9 49.3 6.86 59.6 46.8 7.14 56.4 46.5 7.57 50.9 45.224 8.96 62 54.4 49.7 5.84 56.7 55.9 6.47 55 54.9 6.93 52.6 52.6 7.37 48.2 48.2 7.56 LEGEND BF Bypass Factor Ewb Entering Wet Bulb Idb Leaving Dry Bulb Iwb Leaving Wet Bulb MBtuh 1000 Btuh (gross) 3. The sensible heat capacity is based on 80 F edb temperature of air entering indoor coil. Below 80 F edb, subtract (corr factor x cfm) from the sensible heat capacity. Above 80 F edb, add (corr factor x cfm) to the sensible heat capacity. Correction Factor = 1.10 x (1 BF) x (edb 80). NOTES: 1. Direct interpolation is permissible. Do not extrapolate. 2. The following formulas may be used: sensible capacity (MBtuh x 1000) t = t ldb edw 1.10 x cfm t lwb = Wet-bulb temperature corresponding to enthalpy of air leaving indoor coil (h lwb ) total capacity (MBtuh x 1000) h lwb = h ewb 4.5 cfm Where: h ewb = Enthalpy of air entering indoor coil 9
WET COIL PRESSURE DROP UNIT SIZE 036 042 AIRFLOW (cfm) PRESSURE DROP (in. wg) 1000 0.04 1200 0.05 1400 0.07 1600 0.08 1000 0.04 1200 0.05 1400 0.07 1600 0.08 1400 0.07 048 1600 0.08 060 FILTER PRESSURE DROP (in. wg) UNIT SIZE FILTER SIZE (in.) 1800 0.09 1700 0.07 1800 0.08 2100 0.09 2300 0.10 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 036-042 24 X 24 0.08 0.08 0.09 0.09 0.09 0.10 0.11 0.12 0.14 0.15 048,060 24 X 30 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 ACCESSORY ELECTRIC HEAT PRESSURE DROP (in. wg) HEATER kw 600 800 1000 1200 1400 1600 1800 2000 2200 5 20 0.06 0.08 0.10 0.13 0.15 0.18 0.20 0.23 0.25 DRY COIL AIR DELIVERY* HORIZONTAL DISCHARGE (Deduct 10% for 208-Volt Operation) Unit Motor speed Low Air Delivery 230 Volt Horizontal Discharge External Static Pressure (in.wg) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 450 1231 435 1218 420 1204 400 1120 380 1008 335 950 326 863 311 751 036 Med High Low 470 1302 660 1700 478 1303 450 1264 635 1660 458 1270 445 1205 610 1581 440 1224 410 1163 575 1450 411 1179 388 1081 540 1297 378 1126 359 940 505 1190 350 1022 338 873 485 1095 327 911 321 783 460 989 317 816 042 048 060 Med High Low High Low Med High 481 1310 890 1834 1040 2230 1073 2230 468 1280 798 1736 850 1820 1018 2102 1038 2202 450 1241 678 1688 801 1898 870 2000 810 1791 1000 2025 1001 2160 438 1181 647 1618 760 1841 842 1903 790 1762 950 1960 958 2122 404 1110 618 1510 730 1757 818 1799 735 1703 890 1901 896 2052 370 1022 578 1421 688 1682 782 1718 680 1640 835 1855 840 1926 338 943 540 1309 650 1564 696 1625 580 1415 790 1752 800 1791 320 811 500 1187 600 1429 632 1446 480 1159 650 1468 691 1588 460 1060 570 1365 628 1333 422 950 580 1121 575 1202 NOTES: 1. Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator-coil frost- ing may occur at airflows below this point. 2. Dashes indicate portions of the table that are beyond the blower motor capacity or are not recommended. *Air delivery values are based on, dry coil, without filter or electric heater. Deduct wet coil, filter, and electric heater pressure drops to obtain external static pressure available for ducting. 10
Typical wiring schematic 208/230-1-60 11
Typical wiring schematic 208/230-3-60 12
Typical field wiring (cont) C W1 W1 TO UNIT POWER WIRING BRN (COMMON) VIO (STEP 2) WHT ( STEP 1) BLK YEL CONTACTOR 2 BRN YEL YEL FUSE BLOCK F3 YEL L2 L1 F4 F1 YEL BLK F2 BLK CONTACTOR 1 BRN YEL YEL YEL YEL EL 1 EL 2 EL 3 AUTO-LIMIT BLK BLK BLK Typical Electric Heater Diagram Selection Procedure I DETERMINE COOLING AND HEATING REQUIREMENTS AT DESIGN CONDITIONS. Given: Required Net Cooling Capacity (TC)......34,000 Btuh Sensible Net Heat Capacity (SHC).........25,000 Btuh Required Net Heating Capacity............15,000 Btuh Outdoor Entering-Air Temperature...............95 F Indoor Entering-Air Temperature....80 F edb; 67 F ewb Indoor-Air Quantity...................... 1200 cfm External Static Pressure..................0.20 in. wg Electrical Characteristics (V-Ph-Hz)......... 230-1-60 II SELECT UNIT BASED ON REQUIRED COOLING CAPACITY. Enter Cooling Capacities table at condenser entering temperature of 95 F, indoor air entering at 1200 cfm and 67 F ewb. The 036 unit provides a total cooling capacity of 35,500 Btuh and a sensible heat capacity of 26,600Btuh. For indoor-air temperature other than 80 F edb, calculate sensible heat capacity correction, as required, using the formula found in Note 3 following the Cooling Capacities tables. NOTE: Unit ratings are gross capacities. III SELECT ELECTRIC HEAT. The required heating capacity is 15,000 Btuh (given). Determine the electric heat capacity in kw. 15,000 Btuh = 3.8 kw of heat required 3414 Btuh/kW Enter the Accessory Electric Heater table on page 16 208/230, single-phase, 036 unit. The 5-kW heater at 240v most closely satisfies the heating required to calculate kw at 230 V, multiply the heater kw by multiplication factor 0.92 found in the Multiplication Factors table on page 16. 5 kw x 0.92 = 4.6 kw 4.6 kw x 3414 Btuh/kW = 15,704 Btuh IV DETERMINE FAN SPEED AND POWER REQUIREMENTS AT DESIGN CONDITIONS. Before entering the air delivery tables, calculate the total static pressure required. From the given, Filter Pressure Drop table, the Accessory Electric Heat Pressure Drop table, and the Wet Coil Pressure Drop table, find: External static pressure 0.20 in. wg Filter 0.10 in. wg Electric Heat 0.13 in. wg Wet Coil 0.09 in. wg Total static pressure 0.52 in. wg Enter the table for Dry Coil Air Delivery Horizontal Discharge. At 0.5 in. wg external static pressure and high speed, the motor delivers 1297 cfm. Interpolating for 0.52 in. wg delivers 1276 cfm, which satisfies the job requirements. 13
Electrical data Unit 036 042 048 060 Nominal Voltage V-Ph-Hz Voltage Range Compressor OFM IFM ELECTRIC HEATER POWER SUPPLY MIN Max RLA LRA FLA FLA 220-1-60 187 254 13.5 82 1.50 2.80 220-3-60 187 254 9.6 70 1.50 2.80 220-1-60 187 254 17 97 1.50 2.80 220-3-60 187 254 10.4 78 1.50 2.80 220-1-60 187 254 18.7 110 1.50 3.20 220-3-60 187 254 11.4 78 1.50 3.20 220-1-60 187 254 26.5 178 1.42 5.76 220-3-60 187 254 15 114 1.42 5.76 Nominal kw* 3.8/5.0 7.5/10.0 3.8/5.0 7.5/10.0 3.8/5.0 7.5/10.0 3.8/5.0 7.5/10.0 3.8/5.0 7.5/10.0 3.8/5.0 7.5/10.0 3.8/5.0 7.5/10.0 3.8/5.0 7.5/10.0 FLA MCA MOCP 18.1/20.8 36.1/41.7 10.4/12.0 20.8/24.1 18.1/20.8 36.1/41.7 10.4/12.0 20.8/24.1 18.1/20.8 36.1/41.7 10.4/12.0 20.8/24.1 18.1/20.8 36.1/41.7 10.4/12.0 20.8/24.1 21.6/21.6 26.1/29.5 48.6/55.6 16.7/16.7 17.8/19.9 31.9/36.2 25.9/25.9 27.4/29.5 48.6/55.6 17.7/17.7 17.9/18.5 29.6/33.6 28.5/28.5 27.4/29.5 48.6/85.6 19.4/19.4 21.1/21.1 31.3/35.3 41.02/41.02 42.4/42.2 54.25/61.25 26.65/26.65 29.7/29.7 33.8/37.8 35/35 35/35 50/60 25/25 25/25 35/40 40/40 40/40 50/60 25/25 25/25 30/35 45/45 45/45 50/60 30/30 30/30 35/40 60/60 60/60 60/70 40/40 40/40 35/40 LEGEND FLA Full Load Amps LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection RLA Rated Load Amps *Heater capacity (KW) based on heater voltage of 208v, 240v, & 480v. If power distribution voltage to unit varies from rated heater voltage, heater KW will vary accordingly. NOTES: 1. In compliance with NEC (National Electrical Code) requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be Power Supply fuse. The CGA (Canadian Gas Association) units may be fuse or circuit breaker. 2. Minimum wire size is based on 60 C copper wire. If other than 60 C wire is used, or if length exceeds wire length in table, determine size from NEC. 3. 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 percentage of voltage imbalance. % Voltage imbalance max voltage deviation from average voltage = 100 x average voltage EXAMPLE: Supply voltage is 460-3-60. AB = 452 v BC = 464 v AC = 455 v Average Voltage = 452 + 464 + 455 3 = 1371 3 = 457 Determine maximum deviation from average voltage. (AB) 457 452=5v (BC) 464 457=7v (AC) 457 455=2v Maximum deviation is 7 v. Determine percent of voltage imbalance. % Voltage Imbalance = 100 x 7 457 = 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. 14
Operating sequence COOLING NOTE: With the FAN switch in the ON position, 24 v is supplied to the time-delay relay (TDR) through the G terminal on the thermostat. This voltage energizes the coil of the relay, closing the normally-open set of contacts which provide continuous power to the indoor (evaporator) fan motor (IFM). Moving the FAN switch back to the AUTO position (providing there is not a call for cooling) deenergizes the TDR (when applicable) which deenergizes the IFM after a 30-second delay. The FAN switch in AUTO position cycles upon a call for cooling. On a call for cooling, 24 v is supplied to the compressor contactor (C) and TDR simultaneously through the Y and G terminals of the thermostat, respectively. On units with a compressor TDR, there is a built-in, 5-minute (±45 seconds) delay between compressor starts. Energizing the contactor closes the normally-open set of contacts supplying power to both the compressor and outdoor (condenser) fan motor (OFM). Energizing the TDR closes the normally-open set of contacts providing power to the IFM. On the loss of the call for cooling, 24 v is removed from both the Y and G terminals of the thermostat (providing the FAN switch is in the AUTO position), deenergizing both the compressor and TDR and opening both the contacts supplying power to compressor/ofm. IFM has a 30-second delay. HEATING When power is supplied to unit, transformer (TRAN) is energized. On units with crankcase heater (CH), heater is also energized. With thermostat set to call for heating, sequence of operation is as follows: On a call for heat, circuit R-W and R-G are made through firststage thermostat bulb. If accessory electric heaters are used, a relay is energized, bringing on first stage of supplemental electric heat and fan. When thermostat is satisfied, contacts open, deenergizing relay (on all units) and time-delay relay (on units equipped with time-delay relay). Heaters deenergize, and evaporator fan stops after a 30-second time delay (on units equipped with time-delay relay). Typical Installation INDOOR THERMOSTAT RETURN AIR TOP COVER FROM POWER SOURCE Power Wiring Control Wiring Condenser Airflow Evaporator Airflow *Separate disconnect per NEC (National Electrical Code) required for electric heater when singlepoint conection is not used. POWER AND LOW-VOLTAGE ENTRY COMPOSITE RUST-PROOF BASEPAN CONDENSATE DRAIN CONNECTION DISCONNECT PER NEC* (UNIT AND ELECTRIC HEATER) C00008 15
APPLICATION DATA ACCESSORY ELECTRIC HEATERS ODS CATALOG NOMINAL USED WITH SIZES ORDERING NO. CAPACITY (kw) 036 042 048 060 ELECTRIC HEATERS (208/230 SINGLE PHASE 60 Hz) CPHEATER026A00 5.0 X X X X CPHEATER039A00 10.0 X X X X ELECTRIC HEATERS (208/230 3 PHASE 60 Hz) CPHEATER029A00 5.0 X X X X CPHEATER030A00 10.0 X X X X LEGEND ODS Order Distribution System NOTE: Electric heaters are rated at 240 v. Refer to Multiplication Factors table below for voltages in other applications. MULTIPLICATION FACTORS HEATER Kw RATING 240 Example: 10.0 kw (at 240v) heater on 208 v = 10.0 0.75 (mult factor). = 7.5 kw capacity at 208 v VOLTAGE DISTRIBUTION V/3/60 MULTIPLICATION FACTOR 200 0.69 208 0.75 230 0.92 240 1.00 Engineers Specification Guide GENERAL: Furnish and install outdoor package, electrically controlled, air conditioner utilizing a hermetic compressor for cooling duty. Unit shall discharge supply air horizontally. Nominal unit electrical characteristics shall be v, ph, 60 Hz. The unit shall be capable of satisfactory operation within voltage limits of v to v. Unit power wiring shall enter unit cabinet at a single location. Separate power supply shall not be required for electric heat. COOLING CAPACITY: Total cooling capacity of the unit shall be Btuh or greater, and sensible capacity shall be Btuh or greater at conditions of cfm indoor air entering unit at F dry bulb, F wet bulb and outdoor entering air of F dry bulb. Total design conditions shall be a minimum of Btuh/Watt. The unit shall be capable of cooling operation down to 40 F outdoor as shipped from the factory. CABINET: Unit cabinet shall be constructed of phosphated, bonderized, zinc-coated, prepainted steel. Basepan shall be made of a single-piece non-corrosive, composite material. Evaporator-fan compartment interior cabinet surfaces shall be insulated with a minimum 1/2-in. thick, flexible non-fiberglass insulation, coated on the air side with aluminum foil. Cabinet panels shall be easily removable for servicing. COMPRESSOR: Compressor shall be fully hermetic type with internal and external vibration isolation. CONDENSER SECTION: Condenser fan shall be of the direct-driven propeller type with aluminum blades, riveted to corrosion-resistant steel spiders, and shall be dynamically balanced and discharge air horizontally or vertically upwards. Condenser coils shall have aluminum-plate fins mechanically bonded to seamless copper tubes with all joints brazed. Tube sheet openings shall be belled to prevent tube wear. EVAPORATOR SECTION: Fan shall be 2- or 3-speed with direct drive motor as shown on the equipment drawings. Fan wheel shall be made from steel, be double-inlet type with forward-curved blades with a corrosion-resistant finish and dynamically balanced. Evaporator coils shall have aluminum-plate fins mechanically bonded to seamless copper tubes with all joints brazed. Tube sheet openings shall be belled to prevent tube wear. MOTORS: Compressor motors shall be of the refrigerantcooled type with line break thermal and current overload protection. All fan motors shall have permanently lubricated bearings, and inherent automatic reset thermal overload protection. Condenser fan motor shall be open drip-proof. REFRIGERANT SYSTEM: Refrigerant system shall include fixed orifice metering system. CONTROLS: Unit shall be complete with self-contained lowvoltage control circuit. APPROVALS: All wiring shall be in accordance with NEC. Unit shall be rated in accordance with AHRI Standard Cabinet insulation shall conform to ASHRAE No. 62P. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation. Unit shall have a sloped drain pan that conforms to ASHRAE Standard 62-89. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations 2011-04 PD