Product Data. Fig. 1 - Unit 50VL -A

Transcription

1 50VL---A Performancet 14 SEER Single---Packaged Air Conditioner tem with PuronR (R---410A) Refrigerant Single and Three Phase 2to5NominalTons(Sizes ) Product Data Fig. 1 - Unit 50VL -A A09033 Single-Packaged Products with Energy -Saving Features and PuronR refrigerant. S SEER / 12.0 EER S Factory -Installed TXV S ECM Motor-Standard S Low Sound Levels FEATURES/BENEFITS One-piece cooling unit with optional electric heater, low sound levels, easy installation, low maintenance, and dependable performance. Puron Environmentally Sound Refrigerant is Carrier s unique refrigerant designed to help protect the environment. Puron is an HFC refrigerant which does not contain chlorine that can harm the ozone layer. The most important advantage of Puron refrigerant is that it has not been banned in future air conditioning systems as the traditional refrigerant R -22 has been. Puron refrigerant is in service in over 100,000 systems proving highly reliable, environmentally sound performance. Easy Installation Factory -assembled package is a compact, fully self -contained, electric cooling unit that is prewired, pre-piped, and pre-charged for minimum installation expense. These units are available in a variety of standard cooling sizes with voltage options to meet residential and light commercial requirements. Units are lightweight and install easily on a rooftop or at ground level. The high tech composite base eliminates rust problems associated with ground level applications. Innovative Unit Base Design On the inside a high -tech composite material will not rust and incorporates a sloped drain pan which improves drainage and helps inhibit mold, algae and bacterial growth. On the outside metal base rails provide added stability as well as easier handling and rigging. Convertible duct configuration Unit is designed for use in either downflow or horizontal applications. Each unit is converted from horizontal to downflow and includes horizontal duct covers. Downflow operation is provided in the field to allow vertical ductwork connections. The basepan seals on the bottom openings to ensure a positive seal in the vertical airflow mode. Efficient operation High -efficiency design offers SEER (Seasonal Energy Efficiency Ratios) of 14.2 to (See page 4.) Durable, dependable components Scroll Compressors are designed for high efficiency. Each compressor is hermetically sealed against contamination to help promote longer life and dependable operation. Each compressor also has vibration isolation to provide quieter operation. All compressors have internal high pressure and overcurrent protection. ECM Motor is standard on all 50VL -A models. Direct -drive PSC (Permanent Split Capacitor) condenser -fan motors are designed to help reduce energy consumption and provide for cooing operation down to 40_F (4.4_C) outdoor temperature. Motormasterr II low ambient kit is available as a field -installed accessory. Thermostatic Expansion Valve - A hard shutoff, balance port TXV maintains a constant superheat at the evaporator exit (cooling cycle) resulting in higher overall system efficiency. Refrigerant system is designed to provide dependability. Liquid filter driers 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. High and Low Pressure Switches provide added reliability for the compressor. Indoor and Outdoor coils are computer-designed for optimum heat transfer and efficiency. The indoor coil is fabricated from copper tube and aluminum fins and is located inside the unit for protection against damage. The outdoor coil is internally mounted on the top tier of the unit. Low sound ratings ensure a quiet indoor and outdoor environment with sound ratings as low as 73dBA. (See Page 4.) Easy to service cabinets provide easy 3 panel accessibility to serviceable components during maintenance and installation. The basepan with integrated drain pan provides easy ground level installation with a mounting pad. A nesting feature ensures a positive basepan to roof curb seal when the unit is roof mounted. A convenient 3/4 -in. (19.05 mm) wide perimeter flange makes frame mounting on a rooftop easy. 1

2 Standard horizontal metal duct covers with insulation come with the unit and cover the horizontal duct openings. These can be left in place if the units are converted to downflow. Cabinets are constructed of heavyduty, phosphated, zinc-coated prepainted steel capable of withstanding 500 hours in salt spray. Interior surfaces of the evaporator/heat exchanger compartment are insulated with cleanable semi -rigid insulation board, which keeps the conditioned air from being affected by the outdoor ambient temperature and provides improved indoor air quality. (Conforms to American Society of Heating, Refrigeration and Air Conditioning Engineers No. 62P.) The sloped drain pan minimizes standing water in the drain. An external drain is provided. TABLE OF CONTENTS FEATURES/BENEFITS MODEL NUMBER NOMENCLATURE... 3 AHRI CAPACITIES... 4 PHYSICAL DATA... 5 OPTIONS AND ACCESSORIES... 6 BASE UNIT DIMENSIONS ROOF CURB ACCESSORY SELECTION PROCEDURE PERFORMANCE DATA TYPICAL PIPING AND WIRING APPLICATION DATA ELECTRICAL DATA TYPICAL WIRING SCHEMATICS CONTROLS GUIDE SPECIFICATIONS

3 MODEL NUMBER NOMENCLATURE 50VL --- A Type of Unit 50VL --- Single Packaged Air Conditioner tem N/A Major Series Options FE --- Economizer (3 Phase Only) TF --- Filter Rack TP --- Base unit with tin plated indoor coil hairpins (Single Phase Only) See Price Page for full list of factory options. Only used if ordering an option Nominal Cooling Tons Tons Tons Tons Tons Tons N/A Minor Series Electrical Supply / / Use of the AHRI Certified TM Mark indicates a manufacturer s participation in the program For verification of certification for individual products, go to 3

4 AHRI* CAPACITIES Cooling Capacities and Efficiencies 50VL-A NOMINAL TONS STANDARD CFM COOLING CAPACITY EER SEER LEGEND db --- Sound Levels (decibels) db Dry Bulb SEER Seasonal Energy Efficiency Ratio wb Wet Bulb COP---Coefficient of Performance * Air Conditioning, Heating & Refrigeration Institute. **At A conditions---80_f (26.7_C) indoor db/67_f (19.4_C) indoor wb & 95_F (35_C) outdoor db. { Rated in accordance with U.S. Government DOE Department of Energy) test procedures and/or AHRI Standards 210/240. Notes: 1. Ratings are net values, reflecting the effects of circulating fan heat. Ratings are based on: Cooling Standard: 80 F (26.7_C) db, 67 F wb (19.4_C) indoor entering ---air temperature and 95 F db(35_c) outdoor entering---air temperature. 2. Before purchasing this appliance, read important energy cost and efficiency information available from your retailer. A -WEIGHTED SOUND POWER LEVEL (dba) MODEL 50VL-A SOUND RATING TYPICAL OCTAVE BAND SPECTRUM (without tone adjustment) NOTE: Tested in accordance with AHRI Standard 270 (not listed in AHRI). 4

5 PHYSICAL DATA Physical Data -Unit 50VL -A UNIT SIZE NOMINAL CAPACITY (ton) / /2 4 5 SHIPPING WEIGHT* lb. SHIPPING WEIGHT* (kg) COMPRESSORS Quantity REFRIGERANT (R---410A) Quantity lb Quantity (kg) REFRIGERANT METERING DEVICE OUTDOOR COIL Rows...Fins/in. Face Area (sq ft) OUTDOOR FAN Nominal Cfm Diameter in. Diameter (mm) Motor Hp (Rpm) INDOOR COIL Rows...Fins/in. Face Area (sq ft) INDOOR BLOWER Nominal Cooling Airflow (Cfm) Size in. Size (mm.) Motor HP (RPM) HIGH---PRESSURE SWITCH (psig) Cut---out Reset (Auto) LOSS --- OF --- CHARGE / LOW --- PRES- SURE SWITCH (Liquid Line) (psig) cut---out Reset (auto) RETURN---AIR FILTERS } Throwaway Size in. Throwaway Size (mm) /10 (810) x10 254x254 1/2 (1050) 20x20x1 508x508x /10 (810) x10 254x254 1/2 (1050) 20x24x1 508x610x /5 (810) x x254 3/4 (1000) Scroll 1 TXV /5 (810) x x254 3/4 (1075) 650 +/ / / / x30x1 610x762x /5 (810) /5 (810) x x254 11x x (1075) 1.0 (1040) 24x36x1 610x914x25 *For 460 volt units add 14 lb (6.35 kg) to the shipping weight. { Required filter sizes shown are based on the larger of the AHRI (Air Conditioning, Heating and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300 ft/minute for throwaway type or 450 ft/minute for high---capacity type. Air filter pressure drop for non---standard filters must not exceed 0.08 in. W.C. } If using accessory filter rack refer to the filter rack installation instructions for correct filter sizes and quantity. Electric Heat Pressure Drop Tables (IN. W.C.) Small Cabinet: STATIC CFM kW kw kw kw Large Cabinet: STATIC CFM kW kw kw kw

6 OPTIONS AND ACCESSORIES ITEM DESCRIPTION FACTORY INSTALLED OPTION Coil Options Base unit with tin plated indoor coil hairpins X Compressor Start Kit Compressor Start Kit assists compressor start--- up by providing additional starting torque on sing phase units only. Corporate Thermostats Thermostats provide control for the system heating and cooling functions. Crankcase Heater Crankcase Heater provides anti--- floodback protection for low--- load cooling applications. Horizontal Economizer with solid state controls and barometric relief dampers includes filter racks and provide outdoor air during cooling and Economizer reduce compressor operation. Vertical Economizer with solid state controls and barometric relief dampers includes filter racks and provide outdoor air during cooling and X reduce compressor operation. FIELD INSTALLED ACCESSORY Electric Heaters Electric Heat Supplement X Filter Rack Filter Rack features easy installation, serviceability, and high---filtering performance for vertical applications. Includes 1--- in. filter. X X Flat Roof Curbs Flat Roof Curbs in both in (279 mm) and in. (356 mm) sizes are available for roof mounted applications. X Low Ambient Kit Low Ambient Kit (Motormaster II Control) allows the use of mechanical cooling down to outdoor temperatures as low as 0 F ( C) when properly installed. X Manual Outside Air Damper Square --- to --- Round Duct Transition Kit Time Guard II Manual Outside Air Damper includes hood and filter rack with adjustable damper blade for up to 25% outdoor air. Square---to---Round Duct Transition Kit enable size units to be fitted to 14 in (356 mm). round ductwork. Automatically prevents the compressor from restarting for at least 4 minutes and 45 seconds after shutdown of the compressor. Not required when a corporate programmable thermostat is applied or with a RTU--- MP control. Allows you to power the electric heater and unit contactor separately by Dual Point Electric Heaters having two individual field power supply circuits connected respectively. *Refer to Price Page for application detail. X X X* X X X X X X Electric Heaters CATALOG NOMINAL FUSE USED WITH SIZES ORDERING NO. CAPACITY (kw) QTY ELECTRIC HEATERS (208/230 SINGLE PHASE 60 Hz) CPHEATER052A X X X X X X CPHEATER064A X X X X X X CPHEATER069A X X X X X X CPHEATER070A X X X X X X CPHEATER065A X X X X CPHEATER050A X X X X X X CPHEATER051A X X X CPHEATER066A X X X X X CPHEATER053A X X X CPHEATER054A X X X ELECTRIC HEATERS (208/230 THREE PHASE 60 Hz) CPHEATER055A X X X X X CPHEATER056A X X X X X CPHEATER068A X X X X X CPHEATER057A X X X X X CPHEATER058A X X X X X CPHEATER059A X X X ELECTRIC HEATERS (460 THREE PHASE 60 Hz) CPHEATER060A X X X X CPHEATER061A X X X X CPHEATER062A X X X X CPHEATER063A X X X NOTE: Electric heaters are rated at 240v. Refer to Multiplication Factors table for other voltages. X = Approved combinations. Minimum Airflow for Safe Electric Heater Operation (CFM) SIZE Cfm

7 ECONOMIZER COIL FILTER ECONOMIZER SIDE VIEW CAULK BOTTOM CORNER OF ECONOMIZER ON EACH SIDE Vertical Economizer FI LTER COIL ECONOMIZER BASE FLANGE ON BASE DETAIL FILTER RACK BEND FLANGE AT 90 -SCREW TO DIVIDER WITH 1-IN. (25 mm) SCREW EV APORATOR COIL TOP FILTER RACK Horizontal Economizer MANUAL OUTSIDE AIR DAMPER REPLACEMENT PANEL MANUAL OUTSIDE AIR HOOD DAMPER BLADE BOTTOM FILTER RACK A

8 UNIT DIMENSIONS - 50VL -A24-36 A

9 UNIT DIMENSIONS - 50VL -A42-60 A

10 ROOF CURB ACCESSORY - 50VL -A24-60 B Dashed lines show cross support location for large basepan units. HVAC unit base rails HVAC unit basepan G C Sealing Gasket Anchor screw Flashing field supplied Roofing material field supplied Cant strip field supplied *Provided with roofcurb Roofcurb Wood nailer* Roofcurb* Insulation (field supplied) A F H D SMALL/COMMON CURB E A09413 A09090 ROOF CURB DETAIL B G C SUPPLY AIR SMALL BASE UNIT F A H E RETURN AIR LARGE BASE UNIT D UNIT PLACEMENT ON COMMON CURB A09094 LARGE CURB A09415 SMALL OR LARGE BASE UNIT A09414 UNIT SIZE Small or Large Large CATALOG NUMBER CPRFCURB010A00 CPRFCURB011A00 CPRFCURB012A00 CPRFCURB013A00 A IN. (mm) 11 (279) 14 (356) 11 (279) 14 (356) B (small/common base) IN. (mm)* 10 (254) 14 (356) B (large base) IN. (mm)* 14 (356) C IN. (mm) 16 (406) D IN. (mm) 47.8 (1214) E IN. (mm) 32.4 (822) 43.9 (1116) F IN. (mm) 2.7 (69) G IN. (mm) 30.6 (778) 42.2 (1072) H IN. (mm) 46.1 (1170) * Part Numbers CPRCURB010A00 and CPRCURB011A00 can be used on both small and large basepan units. The cross supports must be located based on whether the unit is a small basepan or a large basepan. NOTES: 1. Roof curb must be set up for unit being installed. 2. Seal strip must be applied, as required, to unit being installed. 3. Roof curb is made of 16 -gauge steel. 4. Attach ductwork to curb (flanges of duct rest on curb). 5. Insulated panels: 1 -in. (25.4 mm) thick fiberglass 1 lb. density. 10

11 SELECTION PROCEDURE (WITH EXAMPLE) 1. Determine cooling and heating requirements at design conditions: Given: Required Cooling (TC)... 34,000 Btuh Sensible Heat (SHC)... 24,000 Btuh Required Heating... 12,500 Btuh Condenser Entering Air Temperature F(35 C) Indoor-Air Temperature F (26 C) edb 67 F (19 C) ewb Evaporator Air Quantity CFM External Static Pressure IN. W.C. Electrical Characteristics Select unit based on required cooling capacity. Enter Net Cooling Capacities table at condenser entering temperature of 95 F (35 C), indoor air entering at 1200 cfm and 67 F (19 C) ewb (entering wet bulb). The unit will provide a total capacity of 34,200 Btuh and a SHC of 24,500 Btuh. 3. Select electric heat. The required heating capacity is 15,000 Btuh. Determine additional electric heat capacity in kw. 15,000 Btuh = 4.4kW of heat required 3,414 Btuh/kW Enter the electric Heater Packages table for 208/240, single-phase, 50VL -A36 unit. The 5 kw heater at 240v most closely satisfies the heating required. To calculate kw at the 208v, multiply the heater kw by multiplication factor 0.75 found in the Wattage Multiplication Factors table. 5 kw x 0.75 = 3.75 kw 3.75 kw x 3414 = Btuh 4. Determine fan speed and power requirements at design conditions. Before entering the air delivery tables, calculate the total static pressure required. From the given example, the Wet Coil Pressure Drop Table, and the Filter Pressure Drop Table: External Static Pressure IN. W.C. Filter IN. W.C. Wet Coil Pressure Drop IN. W.C. Static Pressure IN. W.C. Enter the table for Wet Coil Air Delivery horizontal discharge, 230. At 0.33 IN. W.C. ESP (external static pressure) and medium speed, the fan will deliver 1293 cfm. Adjusting for 208v, the motor delivers 114 cfm (deduct 10%). 5. Select unit that corresponds to power source available. The Electrical Data Table shows that the unit is designed to operate at

12 PERFORMANCE DATA 50VL -A24 EVAPORATOR AIR CFM/BF 700/ / /0.04 EWB _F (_C) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) CONDENSER ENTERING AIR TEMPERATURES _F (_C) 75 (23.9) 85 (29.4) 95 (35) 105 (40.6) 115 (46.1) 125 (51.7) Sens Sens Sens Sens Sens Sens VL-A24 Outdoor Section With NONE Indoor Section (22.2) See Legend and Notes on Page

13 PERFORMANCE DATA (CONT) 50VL -A30 EVAPORATOR AIR CFM/BF 875/ / /0.05 EWB _F (_C) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) CONDENSER ENTERING AIR TEMPERATURES _F (_C) 75 (23.9) 85 (29.4) 95 (35) 105 (40.6) 115 (46.1) 125 (51.7) Sens Sens Sens Sens Sens Sens VL-A30 Outdoor Section With NONE Indoor Section (22.2) See Legend and Notes on Page

14 PERFORMANCE DATA (CONT) 50VL -A36 EVAPORATOR AIR CFM/BF 1050/ / /0.06 EWB _F (_C) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) CONDENSER ENTERING AIR TEMPERATURES _F (_C) 75 (23.9) 85 (29.4) 95 (35) 105 (40.6) 115 (46.1) 125 (51.7) Sens Sens Sens Sens Sens Sens VL-A36 Outdoor Section With NONE Indoor Section (22.2) See Legend and Notes on Page

15 PERFORMANCE DATA (CONT) 50VL -A42 EVAPORATOR AIR CFM/BF 1225/ / /0.05 EWB _F (_C) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) CONDENSER ENTERING AIR TEMPERATURES _F (_C) 75 (23.9) 85 (29.4) 95 (35) 105 (40.6) 115 (46.1) 125 (51.7) Sens Sens Sens Sens Sens Sens VL-A42 Outdoor Section With NONE Indoor Section (22.2) See Legend and Notes on Page

16 PERFORMANCE DATA (CONT) 50VL -A48 EVAPORATOR AIR CFM/BF 1400/ / /0.06 EWB _F (_C) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) CONDENSER ENTERING AIR TEMPERATURES _F (_C) 75 (23.9) 85 (29.4) 95 (35) 105 (40.6) 115 (46.1) 125 (51.7) Sens Sens Sens Sens Sens Sens VL-A48 Outdoor Section With NONE Indoor Section (22.2) See Legend and Notes on Page

17 PERFORMANCE DATA (CONT) 50VL -A60 EVAPORATOR AIR CFM/BF EWB _F (_C) CONDENSER ENTERING AIR TEMPERATURES _F (_C) 75 (23.9) 85 (29.4) 95 (35) 105 (40.6) 115 (46.1) 125 (51.7) Sens Sens Sens Sens Sens Sens 1750/ / / (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2) 57 (13.8) 62 (16.6) 63* (17.2) 67 (19.4) 72 (22.2)

18 PERFORMANCE DATA (CONT) * At 75 F (24 C) entering dry bulb---tennessee Valley Authority (TVA) rating conditions; all others at 80 F (27 C) dry bulb. LEGEND BF Bypass Factor edb Entering Dry---Bulb Ewb Entering Wet---Bulb kw Unit Power Input SHC Sensible Heat (1000 Btuh) TC (1000 Btuh) (net) rh Relative Humidity COOLING NOTES: 1. Ratings are net; they account for the effects of the evaporator---fan motor power and heat. 2. Direct interpolation is permissible. Do not extrapolate. 3. The following formulas may be used: t ldb = t edb --- Sensible capacity (Btuh) 1.10 x cfm t lwb = Wet---bulb temperature corresponding to enthalpy h lwb = h ewb --- total capacity (Btuh) air leaving evaporator coil ( h lwb) 4.5 x cfm Where: h ewb = Enthalpy of air entering evaporator coil 4. The SHC is based on 805 F (26.6_C) edb temperature of air entering evaporator coil. Below 80_F (26.6_C) edb, subtract (corr factor x cfm) from SHC. Above 80_ F (26.6_C) edb, add (corr factor x cfm) to SHC. Correction Factor = 1.10 x (1 + BF) x (edb ). 5. Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it. 18

19 PERFORMANCE DATA (CONT) Multiplication Factors HEATER kw RATING VOLTAGE DISTRIBUTION V/3/60 MULTIPLICATION FACTOR Dry Coil Air Delivery* - Horizontal Discharge - Unit 50VL -A24-60 UNIT MOTOR SPEED WIRE COLOR 50VL-A24 50VL-A30 50VL-A36 50VL-A42 50VL-A48 50VL-A60 EXTERNAL STATIC PRESSURE (IN. W.C.) Low Blue CFM Med-Low Pink CFM Medium 1 Red CFM Med-High Orange CFM High Black CFM Low Blue CFM Med-Low Pink CFM Medium Red CFM Med-High 1 Orange CFM High Black CFM Low Blue CFM Med-Low Pink CFM Medium 1 Red CFM Med-High Orange CFM High Black CFM Low Blue CFM Med-Low Pink CFM Medium Red CFM Med-High 1 Orange CFM High Black CFM Low Blue CFM Med-Low Pink CFM Medium 1 Red CFM Med-High Orange CFM High Black CFM Med-Low Pink CFM Medium 1 Red CFM Med-High Orange CFM High Black CFM * Air delivery values are without air filter and are for dry coil (See 50VL ---A Wet Coil Pressure Drop table). 1 Factory---shipped cooling speed Note: Deduct field---supplied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting. Shaded areas indicate speed/static combinations that are not permitted for dehumidification speed. Note: Deduct 10% for 208 volt operation. 19

20 Dry Coil Air Delivery - Downflow Discharge UNIT MOTOR SPEED WIRE COLOR Low Blue MedLow Pink 50VLA24 Medium 1 Red MedHigh Orange High Black Low Blue MedLow Pink 50VLA30 Medium Red MedHigh 1 Orange High Black EXTERNAL STATIC PRESSURE (IN. W.C.) CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP BHP BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP

21 Dry Coil Air Delivery - Downflow Discharge UNIT MOTOR SPEED WIRE COLOR Low Blue MedLow Pink 50VLA36 Medium 1 Red MedHigh Orange High Black Low Blue MedLow Pink 50VLA42 Medium Red MedHigh 1 Orange High Black EXTERNAL STATIC PRESSURE (IN. W.C.) CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP

22 Dry Coil Air Delivery - Downflow Discharge UNIT 50VLA48 50VLA60 MOTOR SPEED WIRE COLOR Low Blue MedLow Pink Medium 1 Red MedHigh Orange High Black Low Blue MedLow Pink Medium 1 Red MedHigh Orange High Black *Air delivery values are without air filter and are for dry coil (See 50VL Wet Coil Pressure Drop table). 1 Factory -shipped cooling speed. NOTE: Deduct field -supplied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting. Shaded areas indicate speed/static combinations that are not permitted. EXTERNAL STATIC PRESSURE (IN. W.C.) CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP CFM WATTS BHP

23 PERFORMANCE DATA (CONT) 50VL -A Wet Coil Pressure Drop (IN. W.C.) UNIT STANDARD CFM (SCFM) SIZE Economizer with 1 -in. Filter Pressure Drop (IN. W.C.) FILTER SIZE IN. (MM) CFM 12x20x1+12x20x1 (305x508x25+305x508x25) CFM 16x24x1+14x24x1 (406x610x25+356x610x25) CFM 16x24x1+18x24x1 (406x610x25+457x610x25) COOLING TONS 2.0, 2.5, , 4.0 STANDARD CFM (SCFM) Horizontal and Downflow Filter Pressure Drop Table (IN. W.C.) FILTER SIZE IN. (MM) CFM 12x20x1+12x20x1 (305x508x25+305x508x CFM 16x24x1+14x24x1 (406x610x25+356x610x25) CFM 16x24x1+18x24x1 (406x610x25+457x610x25) COOLING TONS 2.0, 2.5, , 4.0 STANDARD CFM (SCFM)

24 Electric Heat Pressure Drop Tables (IN. W.C.) Small Cabinet: STANDARD CFM (SCFM) STATIC kW kw kw kw Large Cabinet: STANDARD CFM (SCFM) STATIC kW kw kw kw

25 TYPICAL PIPING AND WIRING INDOOR THERMOSTAT RETURN AIR TOP COVER FROM POWER SOURCE DISCONNECT PER NEC* POWER ENTRY CONTROL ENTRY *NEC - NATIONAL ELECTRICAL CODE 25

26 APPLICATION DATA Condensate trap A 2 -in. (50.8 mm) condensate trap must be field supplied. Ductwork Secure downflow discharge ductwork to roof curb. For horizontal discharge applications, attach ductwork to unit with flanges. To convert a unit to downflow discharge Units are equipped with factory -installed inserts in the downflow openings. Removal of the inserts is similar to removing an electrical knock -out. Maximum cooling airflow To minimize the possibility of condensate blow -off from the evaporator, airflow through the units should not exceed 450 cfm per ton. Minimum cooling airflow Minimum cooling airflow is 350 cfm per ton. Minimum ambient cooling operation temperature All standard units have a minimum ambient operating temperature of 40_F (4_C). With accessory low ambient temperature kit, units can operate at temperatures down to 0_F (-17_C). 26

27 ELECTRICAL DATA UNIT NOMINAL VOLTAGE RANGE COMPRESSOR OFM IFM MIN MAX RLA LRA FLA FLA 50VL-A / VL-A / VL-A / VL-A / VL-A / VL-A VL-A / VL-A / VL-A VL-A / VL-A / VL-A VL-A / VL-A / ELECTRIC HEAT POWER SUPPLY NOMINAL kw FLA MCA MOCP -/- -/ /5 18.1/ / /35 5.4/ / / /45 7.5/ / / /60 -/- -/ /5 18.1/ / /35 5.4/ / / /45 7.5/ / / / / / / /90 -/- -/ /5 10.4/ / /25 7.5/ / / / / / / /60 -/- -/ /5 18.1/ / /35 5.4/ / /45 40/45 7.5/ / / / / / / /90 -/- -/ /5 10.4/ / /25 7.5/ / / / / / / /60 -/- -/ / / / / / / /- -/ /5 18.1/ / /40 5.4/ / /45 40/45 7.5/ / / / / / / /90 15/ / / /125 -/- -/ /5 10.4/ / /35 7.5/ / / / / / / /60 15/ / / /70 -/- -/ / / / / / / / / /- -/ /5 18.1/ / /50 5.4/ / /47 50/50 7.5/ / / / / / / /90 15/ / / /125 -/- -/ /5 10.4/ / /35 7.5/ / / / / / / /60 15/ / / /70 -/- -/ / / / / / / / / /- -/ /5 18.1/ / /60 5.4/ / /47 60/60 7.5/ / / / / / / /90 15/ / / /125 -/- -/ /5 10.4/ / /40 7.5/ / / / / / / /60 15/ / / /70 27

28 ELECTRICAL DATA (CONT) UNIT NOMINAL VOLTAGE RANGE COMPRESSOR OFM IFM MIN MAX RLA LRA FLA FLA 50VL-A ELECTRIC HEAT POWER SUPPLY NOMINAL kw FLA MCA MOCP -/- -/ / / / / / / / / LEGEND FLA - Full Load Amps IDM - Inducer Motor IFM - Indoor Fan Motor LRA -Locked Rotor Amps MCA - Minimum Circuit Amps MOCP - Maximum Over Current Protection OFM - Outdoor Fan Motor RLA - Rated Load Amps A

29 CONNECTION WIRING SCHEMATIC 208/ A

30 LADDER WIRING SCHEMATIC 208/ A

31 CONNECTION WIRING SCHEMATIC 208/ A

32 LADDER WIRING SCHEMATIC 208/ A

33 1 1 1 R R Y R Y CONNECTION WIRING SCHEMATIC FIELD SUPPLY POWER L1 UNIT ONLY MAXIMUM WIRE SIZE 2 AWG. L3 YEL GRN CCH RED IF USED C YEL CONNECTION WIRING DIAGRAM DANGER: ELECTRICAL SHOCK HAZARD DISCONNECT POWER BEFORE SERVICING CAP YEL COMPRESSOR PLUG OFM FOR WIRING WITH ELECTRIC HEATERS SEE SCHEMATIC ON HEATER ACCESSORY. SCHEMATIC BLU YEL ECON PLUG L2 EQUIP_GND PNK PNK RED GRY ECON BLU SAT BLU YEL BLU TRAN RED YEL FU1 5 AMP FU2 5 AMP C C 460V 230V AUTOTRANSFORMER RED YEL BLU SEE NOTE 8 YEL GND GRN/YEL T1 T3 T2 GRN-YEL L2 GND L1 COM COMP SEE NOTE 5 & 6 1 IFM YEL BLU PNK RED ORN RED SEE NOTE 4 Y2 TSTAT GRY SEE NOTE 7 SEE NOTE 9 R C Y1 G DH RED YEL GRN BLU 3A 24VAC FUSE COM C COM COM LOW STD DEHUM HIGH IFB WHT VIO PNK ACCESSSORY ELECTRIC HEAT HR1 (5 ) WHT VIO HR1,2,3 & 4 (20 ) PNK HR1 HR4 HR2 W2 WHT GRY GRY HR1 & 2 (10 ) HR3 W3 VIO P1 C Y1/Y G Y2/DH W2 W3 P2 C W2 P4 C W2 W2 W3 W3 HR1,2 & 3 (15 ) HPS LPS BLU BLU C1 C C2 OUTDOOR FAN SECTION COMPRESSOR SECTION LPS UNIT COMPONENT ARRANGEMENT INDOOR FAN SECTION OFM CONTROL BOX AREA SINGLE PT. CONNECTION FOR ELECT.HEAT C COLOR CODE BLACK BLU BLUE BROWN GRY GRAY GRN GREEN ORN ORANGE PNK PINK RED RED VIO VIOLET WHT WHITE YEL YELLOW LEGEND FIELD SPLICE TERMINAL (MARKED) ENERGIZED TERMINAL (UNMARKED) SPLICE (IF USED) SPLICE (MARKED) FACTORY WIRING FIELD CONTROL WIRING FIELD POWER WIRING ACCESSORY OR OPTIONAL WIRING TO INDICATE COMMON POTENTIAL ONLY: NOT TO REPRESENT WIRING C CONTACTOR CAP CAPACITOR CCH CRANK CASE HEATER COMP COMPRESSOR MOTOR DH DEHUMIDIFICATION MODE DEHUM DEHUMIDIFICATION MODE ECON ECONOMIZER GND GROUND HPS HIGH PRESSURE SWITCH HR HEATER RELAY IFB INTERFACE FAN BOARD IFM INDOOR FAN MOTOR LPS LOW PRESSURE SWITCH OFM OUTDOOR FAN MOTOR STD STANDARD MODE TRAN TRANSFORMER HPS COMP C S CCH R CAP HC F IFM SEE HEATER SCHEMATIC FOR WIRING TRAN IFB 24V SPLICE BOX EQUIP. GND DISCONNECT PER NEC 24V POWER ENTRY NOTES: 1. IF ANY OF THE ORIGINAL WIRES FURNISHED ARE REPLACED, IT MUST BE REPLACED WITH TYPE 90 DEGREE C WIRE OR IT'S EQUIVALENT. 2. SEE PRICE PAGES FOR THERMOSTAT AND SUBBASES. 3. USE 75 DEGREE COPPER CONDUCTORS FOR FIELD INSTALLATION. 4. REFER TO INSTALLATION INSTRUCTIONS FOR CORRECT SPEED SELECTION OF IFM. 5. RELOCATION OF SPEED TAPS MAY BE REQUIRED WHEN USING FIELD INSTALLED ELECTRIC HEATERS, CONSULT INSTALLATION INSTRUCTIONS TO DETERMINE CORRECT SPEED TAP SETTING. 6. "DO NOT DISCONNECT PLUG UNDER LOAD." 7. THIS FUSE IS MANUFACTURED BY LITTELFUSE, P/N THESE FUSES ARE MANUFACTURED BY COOPER BUSSMAN, P/N FNQ-R-5 9. DEHUM FEATURE CANNOT BE USED WHEN ECONOMIZER IS INSTALLED. UNIT FACTORY-SHIPPED IN STD MODE. A

34 LADDER WIRING SCHEMATIC LADDER WIRING DIAGRAM DANGER: ELECTRICAL SHOCK HAZARD DISCONNECT POWER BEFORE SERVICING L2 L RED IF USED G/Y CCH OFM C R S GRN YEL 23 C L3 YEL 13 CAP YEL 11 BLU T2 T1 T3 COMP YEL YEL 13 CL G NX IFM G/Y 460V TRAN 460V YEL 13 RED 24V 24V R C Y1 G DH W2 W3 SEE NOTE 7 RED YEL GRN BLU WHT VIO RED FUSE 3A P1-1 P1-2 P1-3 P1-4 P1-5 P1-6 P1-7 24VAC IFB "R" "C" "Y1/Y" "G" "Y2/DH" "W2" "W3" G/Y Y2 VIO P2-1 P2-2 P2-3 P2-4 Y HPS BLU LPS BLU C1 C C2 C,TRAN ACCESSORY ELECTRIC HEAT YEL P4-1 P4-2 P4-3 P4-4 P4-5 LOW STD DEHUM HIGH WHT VIO PNK GRY SEE NOTE 4 WHT VIO SEE NOTE 9 PNK GRY BLU PNK RED ORN HR1 HR4 HR2 HR IFM C ECON HARNESS PNK PNK COM C BLU BLU SAT C G/Y RED 50VL D 34

35 CONTROLS Operating sequence Cooling When the system thermostat calls for cooling, 24 V is supplied to the Y and G terminals of the thermostat. This completes the circuit to the contactor coil (C) and indoor (evaporator) fan relay (IFR). The normally open contacts of energized C close and complete the circuit through compressor motor (COMP) to outdoor (condenser) fan motor (OFM). Both motors start instantly. The set of normally open contacts of energized IFR close and complete the circuit through IFM. The IFM starts instantly. On the loss of the thermostat call for cooling, 24 V is removed from both the Y and G terminals (provided the fan switch is in the AUTO position) de-energizing the compressor contactor and opening the contacts supplying power to compressor/ofm. After a 90 -second delay, the IFM shuts off. If the thermostat fan selector switch is in the ON position, the IFM will run continuously. For the 460 V units there is a step down autotransformer supplying 230 V to the Indoor Fan Motor. NOTE: On units with a Time Guard II device: Once the compressor has started and then stopped, it cannot be restarted again until 5 minutes have elapsed. Heating If accessory electric heaters are installed, on a call for heat, circuit R -W is made through the thermostat contacts. Circuit R -G is made which energizes the IFR. If the heaters are staged, then the thermostat closes a second set of contacts (W2) when second stage is required. When thermostat is satisfied, contacts open, deenergizing the heater relay and the IFR. 35