Product Data 40QA Cooling Only and Heat Pump Ceiling Suspended Fan Coil 1 1 / 2 to 5 Nominal Tons The 40QA Energy-Efficient Ceiling Suspended fan coil incorporates innovative technology to provide reliable cooling and heating performance. Built into these units are features most desired by the industry, including: SEER (Seasonal Energy Efficiency Ratio) ratings of up to 12.0 when matchedwithductfreesystem Fan Coils. All models are UL (Underwriters Laboratories); UL, Canada; ARI and CEC (California Energy Commission) listed. A wide range of accessories is available to meet a variety of installation requirements. The 40QA series is ideal for applications where there is no available space above the ceiling or the ceiling height is restricted. Features/Benefits Technology and components A high-efficiency, four-row heat exchanger has mechanically expanded copper tubes with continuous aluminum fins. The coil connections are made of brass. Fan motor The direct-drive fan has a three-speed permanent split capacitor motor with built-in thermal protection, regulated by an electronic thermostat. The motor is installed on anti-vibration mounts. The fan blade design ensures uniform airflow through the heat exchanger. Air distribution Air distribution provides individual comfort with the features of horizontal air sweep and vertical deflectors. The special design of air distribution ensures rapid blending of the supply and room air. Conditioned air can be Copyright 2004 Carrier Corporation Form 40QA-1PD
directed in numerous positions, then evenly distributed throughout the room. Return air enters the unit through the bottom back of the unit. It is then cleaned by an easily removable, washable filter. Controls A choice of three different thermostats are available, suitable for installation on a wall. The solid-state electronic thermostat is available in Slim Line, Flat Stat, and a 5-1-1 programmable NP-thermostat. Thermostat features include: Three-speed manual setting Automatic changeover Secure operation If security is an issue, outdoor and indoor units are connected only by refrigerant piping and wiring to prevent intruders from crawling through ductwork. Fast installation Carrier s compact systems take only a few hours to install only wire and piping need to be run. The fast and easy installation ensures minimal disruption to customers in the home or workplace. This Carrier advantage is especially beneficial in retrofit situations. Built-in reliability Carrier split system units are designed to provide years of trouble-free operation with features such as freeze protection and 24-volt controls. Flexibility A variety of accessories help meet system requirements and weather considerations. Available accessories include: Slim Line thermostat, Flat Stat thermostat, NP - thermostat, condensate pump, fresh air intake kit, power vent fan for fresh air intake, and remote room sensor. Order and install these accessories separately. Table of contents Features/Benefits...........................................1,2 Model Number Nomenclature................................... 2 ARI Capacity Ratings........................................3,4 Physical Data............................................... 5 Field-Installed Accessories...................................... 6 Dimensions................................................ 7 Performance Data........................................... 8 Electrical Data.............................................. 8 Typical Wiring Schematics...................................9-11 Typical Piping and Wiring.................................... 12 Controls................................................. 13 Guide Specifications.......................................14,15 Model number nomenclature 40 QAB 024 311 Indoor Fan Coil Unit Type QAB = Under Ceiling Cool Only QAE = Under Ceiling Heat Pump Voltage 311 = 208/230-1-60 321 = 208/230-1-60 331 = 208/230-1-60 Nominal Capacity 024 = 1 1/2, 2 Tons 036 = 3 Tons 048 = 4 Tons 060 = 5 Tons *The 40QAB/AQE024 unit can be reconfigured to a 40QAB/QAE018 1 1 / 2 ton unit by using a different motor speed fan tap. 2
ARI* capacity ratings COMBINATIONS PISTON SIZE CHARGE COOLING ONLY UNDER CEILING INDOOR 40QAB024-331 40QAB024-331 40QAB036-321 40QAB036-321 40QAB048-321 40QAB060-311 OUTDOOR ARI CAPACITY (Btuh) ACCURATER PISTON NO. CHARGE (lb) (Note 1) 38HDC018-3 18,000 53 3.7 38HDL018-3 18,000 53 4.3 38HDC024-3 22,800 57 6.3 38HDL024-3 23,000 57 4.9 38HDC030-3 30,000 65 7.1 38HDL030-3 29,000 65 5.2 38HDC036-3, 5, 6 34,000 70 5.4 38HDL036-3 34,000 70 5.0 38HDC048-3, 5, 6 47,000 84 7.4 38HDL048-3 45,500 84 7.1 38HDC060-3, 5, 6 58,000 93 13.6 38HDL060-3 58,500 93 13.6 INDOOR OUTDOOR ARI CAPACITY COOLING (Btuh) HEAT PUMP UNDER CEILING ARI CAPACITY HEATING (Btuh) ACCURATER PISTON INDOOR ACCURATER PISTON OUTDOOR CHARGE (lb) (Note 1) 40QAE024-331 38QR-018C-3 19,000 17,000 55 49 4.3 38QR-024C-3 24,000 22,600 55 49 6.3 40QAE036-321 38QR-030C-3 30,000 28,000 63 55 6.4 38QR-036C-3, 5, 6 33,400 33,400 63 61 7.5 40QAE048-321 38QR-048C-3, 5, 6 48,000 45,500 84 78 10.0 40QAE060-321 38QR-060C-3, 5, 6 58,000 57,500 96 82 11.9 HEAT/COOL UNDER CEILING (Cooling With Electric Heat) INDOOR 40QAE024-331 40QAE036-321 40QAE048-321 40QAE060-311 OUTDOOR ARI CAPACITY (Btuh) ACCURATER PISTON NO. CHARGE (lb) (Note 1) 38HDC018-3 17,800 52 3.6 38HDL018-3 18,000 52 4.3 38HDC024-3 22,600 53 6.2 38HDL024-3 23,000 53 4.9 38HDC030-3 29,200 63 5.6 38HDL030-3 29,000 63 5.2 38HDC036-3, 5, 6 33,800 65 5.6 38HDL036-3 33,400 65 5.0 38HDC048-3, 5, 6 46,500 84 7.4 38HDL048-3 45,500 84 7.1 38HDC060-3, 5, 6 57,500 93 13.6 38HDL060-3 58,500 93 8.7 *ARI Air Conditioning and Refrigeration Institute. The 024 size unit shown is configured as an 018 size unit by changing the motor speed fan tap plug. NOTES: 1. Charge is based on 25 ft of interconnecting tubing. Charge may need to be added for longer runs. 2. Cooling units shipped with a full charge. Heat pumps are shipped with a holding charge. 3. For expanded ratings see matching condenser product data catalog. 4. Air entering evaporator 80 F dry bulb. Air entering evaporator 72 F wet bulb. 5. Rated and certified in accordance with ARI Standards 210/240 and 270. 3
ARI* capacity ratings (cont) 40QAB018* 40QAB024 40QAB024 40QAB036 40QAB048 40QAB060 40QAE018* 40QAE024 40QAE036 40QAE048 40QAE060 LEGEND ARI Air Conditioning and Refrigeration Institute dba Decibels on the A scale SOUND DATA UNDER CEILING FAN COILS (A Weighted) SOUND SOUND FAN SOUND POWER DATA OCTAVE BAND (dba) PRESSURE (dba) POWER (dba) SPEED 125 250 500 1000 2000 4000 8000 48.9 57.2 High 38.1 50.0 52.6 54.7 49.0 41.5 31.8 46.4 54.7 Medium 36.4 47.7 50.7 52.3 46.3 37.4 29.5 44.5 52.8 Low 35.1 46.2 49.3 50.5 43.5 34.3 29.0 50.1 58.4 High 39.2 50.9 53.4 56.0 50.4 43.1 32.8 48.9 57.2 Medium 38.1 50.0 52.6 54.7 49.0 41.5 31.8 46.4 54.7 Low 36.4 47.7 50.7 52.3 46.3 37.4 29.5 48.9 57.2 High 38.1 50.0 52.6 54.7 49.0 41.5 31.8 46.4 54.7 Medium 36.4 47.7 50.7 52.3 46.3 37.4 29.5 44.5 52.8 Low 35.1 46.2 49.3 50.5 43.5 34.3 29.0 60.1 68.4 High 50.2 61.0 60.5 65.0 61.7 58.9 51.5 57.7 66.0 Medium 47.9 58.6 58.3 62.8 59.1 56.6 48.1 54.6 62.9 Low 46.2 55.6 5.2 59.9 56.3 53.6 43.0 59.0 67.3 High 48.7 60.8 60.4 64.0 60.3 57.3 47.7 58.0 66.3 Medium 47.8 59.2 59.4 63.1 59.2 56.2 46.6 Low 61.8 70.1 High 52.5 63.6 63.7 67.0 63.3 59.0 50.0 60.5 68.8 Medium 51.2 61.5 61.9 66.4 60.8 56.6 47.0 57.5 65.8 Low 49.5 59.1 60.0 63.1 58.3 53.6 43.8 48.9 57.2 High 38.1 50.0 52.6 54.7 49.0 41.5 31.8 46.4 54.7 Medium 36.4 47.7 50.7 52.3 46.3 37.4 29.5 44.5 52.8 Low 35.1 46.2 49.3 50.5 43.5 34.3 29.0 51.1 59.4 High 42.8 51.8 54.0 56.7 52.2 45.9 36.6 50.2 58.5 Medium 41.3 50.8 53.3 55.6 51.3 45.3 35.2 49.5 57.8 Low 40.9 50.3 52.6 54.7 50.7 45.1 35.8 60.1 68.4 High 50.2 61.0 60.5 65.0 61.7 58.9 51.5 57.8 66.1 Medium 47.9 58.6 58.3 62.8 59.1 56.6 48.1 54.9 63.2 Low 46.2 55.6 56.2 59.9 56.3 53.6 43.0 59.0 67.3 High 48.7 60.8 60.4 64.0 60.3 57.3 47.7 58.0 66.3 Medium 47.8 59.2 59.4 63.1 59.2 56.2 46.6 Low 61.8 70.1 High 52.5 63.6 63.7 67.0 63.3 59.0 50.0 60.5 68.8 Medium 51.2 61.5 61.9 66.4 60.8 56.6 47.0 57.5 65.8 Low 49.5 59.1 60.0 63.1 58.3 53.6 43.8 *The 40QAB/QAE018 unit is a 40QAB/QAE024 unit using a different motor speed fan tap plug. Field reconfigured for 18,000 Btuh. NOTES: 1. Sound levels are taken in accordance with ARI Sound Standard 350. 2. Sound Pressure data is measured at 1 m from the unit. 4
Physical data 40QAB018* 40QAB024 40QAB036 40QAB048 40QAB060 40QAE018* 40QAE024 40QAE036 40QAE048 40QAE060 NOMINAL CAPACITY (Tons) 1.5 2.0 3.0 4.0 5.0 1.5 2.0 3.0 4.0 5.0 OPERATING WEIGHT (lb) 108 108 117 149 179 110 110 119 151 181 MOISTURE REMOVAL (pts/hr) 5.8 7.1 9.5 13.4 15.1 5.8 7.1 9.5 13.4 15.1 REFRIGERANT TYPE R-22 R-22 R-22 R-22 R-22 R-22 R-22 R-22 R-22 R-22 METERING DEVICE (Note 1) AccuRater AccuRater AccuRater AccuRater AccuRater AccuRater AccuRater AccuRater AccuRater AccuRater CHARGE (lb) (Note 2) 3.7 5.5 5.4 7.4 13.6 4.3 6.3 Note 3 10.0 11.9 INDOOR FAN (Direct Drive) High Rpm/Cfm 862/500 1050/600 1275/840 1435/1200 1275/1600 900/480 1050/550 1275/870 1435/1130 1275/1600 Med Rpm/Cfm 690/400 690/400 972/740 1388/1160 972/1220 862/400 900/480 972/750 1388/ 975 972/1220 Low Rpm/Cfm 552/320 552/320 830/640 1315/1100 830/1040 770/320 862/400 830/630 1315/ 820 830/1040 Air Throw ft (high fan) 25 30 40 45 45 25 27 38 40 40 Watts 92 92 282 425 564 92 92 282 425 564 Quantity 1 1 1 2 2 1 1 1 2 2 Hp 1/ 16 1/ 16 1/ 16 1/ 6 & 1 / 16 1/ 6 1/ 16 1/ 16 1/ 6 1/ 6 & 1 / 16 1/ 6 BLOWER WHEEL Quantity 2 2 2 3 4 2 2 2 3 4 Size (in.) 6x8 6x8 6x8 6x8 6x8 6x8 6x8 6x8 6x8 6x8 INDOOR COIL DATA Face Area (sq ft) 2.2 2.2 2.6 3.0 4.0 2.2 2.2 2.6 3.0 4.0 No. of Rows 4 4 4 4 4 4 4 4 4 4 FPI 15 15 15 15 15 15 15 15 15 15 Circuits 4 4 4 8 8 4 4 4 8 8 Filters (Cleanable) Quantity 4 4 5 Note 4 6 4 4 5 Note 4 6 Size (in.) 12 x 8.75 12 x 8.75 10.6 x 8.7 Note 4 12 x 8.75 12 x 8.75 12 x 8.75 10.6 x 8.7 Note 4 12 x 8.75 Refrigerant Lines Connection Type Flare Flare Flare Flare Flare Flare Flare Flare Flare Flare Liquid Line (in.) 3 / 8 OD 3 / 8 OD 3 / 8 OD 3 / 8 OD 3 / 8 OD 3 / 8 OD 3 / 8 OD 3 / 8 OD 3 / 8 OD 3 / 8 OD Vapor Line (in.) 5 / 8 OD 5 / 8 OD 3 / 4 OD 3 / 4 OD 3 / 4 OD 5 / 8 OD 5 / 8 OD 3 / 4 OD 7 / 8 OD 7 / 8 OD Max Length, Lift & Drop Note 5 Note 5 Note 5 Note 5 Note 5 Note 5 Note 5 Note 5 Note 5 Note 5 CONDENSATE DRAIN Outside Dia (in.) (Malepipethd)(Note6) 3 / 4 3 / 4 3 / 4 3 / 4 3 / 4 3 / 4 3 / 4 3 / 4 3 / 4 3 / 4 CONTROLS (Solid State) Wall Thermostat (Required) Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Freeze Protection Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Defrost Method N/A N/A N/A N/A N/A Time/Temp Time/Temp Time/Temp Time/Temp Time/Temp Fan Speeds H/M/L/Auto H/M/L/Auto H/M/L/Auto H/M/L/Auto H/M/L/Auto H/M/L/Auto H/M/L/Auto H/M/L/Auto H/M/L/Auto H/M/L/Auto Control Voltage 24-v 24-v 24-v 24-v 24-v 24-v 24-v 24-v 24-v 24-v System Voltage 208/230 v 208/230 v 208/230 v 208/230 v 208/230 v 208/230 v 208/230 v 208/230 v 208/230 v 208/230 v AIR SWEEP Horizontal Automatic Automatic Automatic Automatic Automatic Automatic Automatic Automatic Automatic Automatic Vertical Manual Manual Manual Manual Manual Manual Manual Manual Manual Manual Finish Note 7 Note 7 Note 7 Note 7 Note 7 Note 7 Note 7 Note 7 Note 7 Note 7 *The 40QAB/QAE018 fan coil is a 40QAB/QAE024 unit using a different motor speed fan tap. Refer to installation instructions for details. Valve connection size is 3 / 4 -in. Recommended line size is 7 / 8 -in. With recommended thermostat. NOTES: 1. Metering device located in the indoor unit. 2. 25 ft of refrigerant lines. Heat pump units are shipped with a holding charge. 3. Single-phase unit 7.5 lb, 3-phase unit 8.7 lb. 4. 4pieces10ft-6in.x8ft-7in.and2pieces12ftx8ft-7in. 5. See matching condenser for line lengths. 6. Flexible tubing ( 5 / 8 in.) required when optional condensate pump is used. 7. GM Motorhome White with black trim. 5
Field-installed accessories Slim Line thermostat is a specially designed thermostat for Duct-Free Systems that incorporate 3-speed control, programmability, autochangeover, backlight, locking keypad and a large LCD display. (Slim Line thermostats can only be used on cooling only, heat pumps and heat/cool systems.) Flat Stat thermostat is a specially designed thermostat for Duct-Free Systems that incorporates 3-speed control, programmability, autochangeover, backlight, locking keypad and a large LCD display that is mounted flush to the wall. (Flat Stat thermostats can only be used on cooling only and heat/cool systems.) NP - thermostat is a specially designed thermostat for Duct-Free Systems that incorporates 3-speed control, 5-1-1 (Monday through Friday - Saturday - Sunday) programmability, autochangeover, backlight, locking keypad and a large LCD display. (NP - thermostats can only be used on cooling only and heat/cool systems.) Fresh air intake kit provides for a variable amount of outdoor air to be mixed with the conditioned air. Power vent fan for fresh air intake provides up to 30% of outdoor air to be supplied to the conditioned space (requires intake kit). Remote room sensor kit is designed to sense the air temperature at a remote location and send this information by digital communication to the thermostat (used on Slim Line and Flat Stat thermostats only). NP THERMOSTAT SLIM LINE THERMOSTAT FLAT STAT THERMOSTAT 6
Dimensions 40QA BASE DIMENSIONS NOTES: 1. Dimensions in [ ] are in millimeters. 2. Direction of airflow. 3. Standard unit clearances are as follows: 0 in. on top and rear 3in.onleftside 12 in. on right side 36 in.on bottom (When facing unit discharge.) WEIGHT (lb) A B E F G 40QA_ Cooling Only Heat Pump ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm 024 108 110 4-2 15 / 16 1294 3-10 1169 4-1 5 / 8 1260 1-9 5 / 8 549 036 117 119 4-10 13 / 16 1493 4-5 7 / 8 1368 4-9 1 / 2 1459 2-1 1 / 2 648 048 149 151 5-11 9 / 16 1817 5-6 5 / 8 1692 5-10 1 / 4 1783 1-9 7 / 8 555 3-3 1 / 16 992 060 179 181 7-8 2336 7-3 2211 7-6 5 / 8 2302 1-11 5 / 8 601 4-11 9 / 16 1512 7
Performance data Fresh air and ducting The ceiling-suspended fan coil units may bring in up to 30% fresh air. The percentage of air allowable is calculated based on the unit high speed cfm. Air quantities above this level may exceed compressor maximum saturated suction temperatures. A power ventilation kit is available to overcome ventilation duct static. See Power Ventilation Kit Available Static Pressure table below. POWER VENTILATION KIT AVAILABLE STATIC PRESSURE FAN CFM AT STATIC PRESSURE (in. wg) DUCT WATTS RPM VOLTAGE HP 0 1/ 8 1/ 4 3/ 8 1/ 2 3/ 4 1 1 1 / 2 DIA. (in.) 1 / 15 150 2700 208/230 370 335 318 298 256 219 189 112 6 SYSTEM OPERATING CONDITIONS OPERATING LIMITS FAN COIL S TEMP CONDITION Maximum Room Temperature (F) 84 Minimum Room Temperature (F) 64 Maximum Return Air (F) Dry-Bulb 85 Wet-Bulb 72 Minimum Return Air (F) (Heat Pump) 28 Electrical data VOLTAGE VOLTAGE FAN HEATER POWER MINIMUM V-Ph-60 Hz Min Max FLA kw FLA MCA MOCP FLA WIRE SIZE (AWG) 40QAB018-3 208/230-1 187 253 0.50 0.63 15.0 0.50 14 40QAB024-3 208/230-1 187 253 0.50 0.63 15.0 0.50 14 40QAB036-3 208/230-1 187 253 1.30 1.60 15.0 1.30 14 40QAB048-3 208/230-1 187 253 1.60 2.00 15.0 1.60 14 40QAB060-3 208/230-1 187 253 2.60** 3.30 15.0 2.60 14 40QAE018-3 208/230-1 187 253 0.50 2.00 8.66 9.29 15.0 11.29 14 40QAE024-3 208/230-1 187 253 0.50 2.00 8.66 9.29 15.0 11.29 14 40QAE036-3 208/230-1 187 253 1.30 3.00 13.00 17.70 20.0 14.30 14 40QAE048-3 208/230-1 187 253 1.60* 4.00 17.40 23.80 25.0 19.00 12 40QAE060-3 208/230-1 187 253 2.60** 5.00 21.70 28.70 30.0 24.30 10 LEGEND AWG American Wire Gage FLA Full Load Amps HACR Heating, Air Conditioning, and Refrigeration LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection Amps (Fuse or HACR) *The 40QAB/QAE018 is a 40QAB/QAE024 unit using a different motor speed fan tap plug. One fan is 1.1 amps, the second fan is 0.5 amps. **Two fans each operating at 1.3 amps. 8
Typical wiring schematics 53QAB-330 COOLING SYSTEM WIRING DIAGRAM LEGEND ASM Air Sweep Motor ASR Air Sweep Relay ASW Air Sweep Switch C Contactor CAP Capacitor CLO Compressor Lockout COMP Compressor CR Control Relay CT Current Transformer DR Delay Relay EQUIP GND Equipment Ground FL Fuse Link FPT Freeze Protection Thermostat FR Fan Relay FU Fuse HP Heat Pump HPS High-Pressure Switch HR Heater Relay HTR Heater HTT Heater Temp Thermostat IFM Indoor Fan Motor LPS Low-Pressure Switch OFM Outdoor-Fan Motor OL Overload PDR Pump Delay Relay PL Plug PM Pump Motor PSS Pump Shut-off Switch ST Start Thermistor TB Terminal Block TDR Time Delay Relay TRAN Transformer Terminal (Marked) Terminal (unmarked) Splice Terminal Block Factory Wiring Field Control Wiring Field Power Wiring Printed Circuit Board Accessory or Optional Wiring NOTES: 1. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent. 2. Wire in accordance with National Electrical Code, NEC) and all local codes. 3. Transformer is thermally protected and will reset automatically. 4. IFMs, OFM and COMP have internal thermal protection. 5. The CLO locks out the compressor to prevent short cycling on compressor overloads and safety devices. Before replacing CLO check these devices. Minimum of one amp turn required to hold contacts closed. 6. H1 terminal and H1 to H2 jumper used only when indoor unit is a heat pump model. 7. When using thermostat with air sweep function: YellowwirefromG3tobeconnectedtoASR1. BlackwiretobedisconnectedfromASR1. Leave black wire tie-wrapped to yellow wire. 9
Typical wiring schematics (cont) 38HDL AND 40QAB, 40QAE SYSTEM WIRING DIAGRAM 10
LEGEND ASM Air Sweep Motor ASR Air Sweep Relay C Contactor CAP Capacitor CH Crankcase Heater (060 Only) CLO Compressor Lockout COMP Compressor CR Control Relay CT Current Transformer DFB Defrost Board (Outdoor Unit) DFT Defrost Thermostat DR Delay Relay DTS Discharge Temp. Sensor EQUIP. GND Equipment Ground FL Fuse Link FPT Freeze Protection Thermostat FR Fan Relay FU Fuse HP Heat Pump HPS High-Pressure Switch HR Heater Relay HTR Heater HTT Heater Temp Thermostat IFM Indoor Fan Motor LPS Low-Pressure Switch OFM Outdoor-Fan Motor OL Overload PDR Pump Delay Relay PL Plug PM Pump Motor PSS Pump Shut-off Switch RVS Reversing Valve Solenoid SC Start Capacitor SR Start Relay SSDR Safety Switch Delay Relay TB Terminal Block TDR Time Delay Relay TRAN Transformer Terminal (Marked) Terminal (unmarked) Splice Terminal Block Factory Wiring Field Control Wiring Field Power Wiring Printed Circuit Board Accessory or Optional Wiring NOTES: 1. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent. 2. Wire in accordance with National Electrical Code, NEC) and all local codes. 3. Transformer is thermally protected and will reset automatically. 4. IFMs, OFM and COMP have internal thermal protection. 5. The CLO locks out the compressor to prevent short cycling on compressor overloads and safety devices. Before replacing CLO check these devices. Minimum of one amp turn required to hold contacts closed. 6. H1 terminal and H1 to H2 jumper used only when indoor unit is a heat pump model. 7. When using thermostat with air sweep function: Yellow wire from G3 to be connected to ASR1. Black wire to be disconnected from ASR1. Leave black wire tie-wrapped to yellow wire. 53QAE-330 HEAT PUMP SYSTEM WIRIING DIAGRAM 11
Typical piping and wiring TYPICAL INSTALLATION CEILING-SUSPENDED SYSTEMS LEGEND φ Phase NEC National Electrical Code Piping Line Voltage 24 V Thermistor *Standard. Accessory item. **Field supplied. Insulate for heat pump application. NOTES: 1. All piping must follow standard refrigerant piping techniques. 2. All wiring must comply with the applicable local and national codes. 3. Liquid line need not be insulated on cooling unit. 4. Wiring and piping shown are general points-of-connection guides only and are not intended for a specific installation. 5. Insulate condensate drain if run above a conditioned space. 6. AccuRater device is provided. 7. Check piston/charge chart for proper piston size depending on condenser match. 12
Controls Sequence of operation Automatic air sweep All under-ceiling units are equipped with an automatic air sweep feature, which automatically directs the airflow louvers up and down to provide optimum room air circulation. If the automatic sweep feature is not desired, temporarily start the automatic sweep using the toggle switch on the unit. When the louvers are in the desired position, turn the automatic sweep off to hold them in that position. Operating sequence Ceiling-suspended fan coil units have a relay board which controls system operation in response to the room thermostat. The user may manually select any one of 3 fan speeds for unit operation. Ceilingsuspended systems may be equipped with an accessory power ventilation kit and/or condensate pump. Duct-free splits thermostat operation Operating mode memory After the system is turned off or after a power failure the system remains in the last operating mode selected. When the system is turned back on, or when power is automatically restored, operation continues in the same operating mode as when the system shut down. Automatic operation (auto) mode If Auto. mode is selected, the system automatically switches over the operating mode from heating to cooling, or from cooling to heating depending on the selected temperature. Auto. mode also controls fan speed if not manually overridden. Fan operation Fan speed can be selected by pressing the fan button (either high, medium, or low speed). The fan is capable of operation when unit mode is set on cooling, heating, or auto. mode. When the fan is operating in medium or high speed and the unit is equipped with the power ventilation kit, the ventilation fan will operate to provide fresh air. Increased demand for cooling (heat pump systems) 1. When the room thermostat senses a demand for cooling, the fan coil relay board is energized and the indoor fan will start in the selected speed (if it is not already operating). 2. The reversing valve is energized at all times when in cooling mode. 3. The internal condensate pump (if so equipped) runs whenever the reversing valve is energized. The internal condensate pump (if so equipped) runs whenever there is a demand for cooling. 4. As long as the condensate float switch and freeze protection thermostat are closed, the cooling relays in the fan coil unit will close. This energizes the compressor and outdoor fan in the outdoor unit. The compressor will continue to operate until the room thermostat is satisfied. 5. When the cooling demand is satisfied, the compressor and outdoor fan will stop. If the system is in Auto. mode, the indoor fan will stop with the compressor. If the unit has the accessory ventilation kit, the ventilation fan will operate whenever the indoor fan is set for medium or high speed. Increased demand for heating (heat pump systems) 1. When the room thermostat senses a demand for heating, the fan coil relay board is energized 2. The indoor fan will start in the selected speed (if it is not already operating). The reversing valve will not be energized.the internal condensate pump (if supplied) and freeze protection thermostat are not operated during heating operation. 3. The control relay closes, and the compressor and outdoor fan are energized through the defrost and the defrost timer runs. 4. Once every 90 minutes (the factory default setting) of the compressor run time, the DFB (defrost board) logic checks the defrost thermostat (DFT). If the DFT is open, the unit continues in heating operation. If the DFT is closed, the DFB switches the unit to defrost mode. The timing on the DFB may be set at either 30, 50 or 90 minutes. Defrost The DFB energizes the RVS (reversing valve solenoid), and the reversing valve switches to the cooling position. The relay on the DFB opens and the outdoor fan stops. The contact on the DFB is also energized, which in turn energizes the defrost relay on the fan coil relay board, turns off the electric heater and stops the indoor fan. The DFB logic checks the 10-minute defrost timer and the DFT. If the DFT opens in less than 10 minutes, the defrost board switches the unit back to normal heating operation. If the DFT remains closed the DFB switches the unit back to heating operation after 10 minutes. When the DFB changes back to heating mode, the RVR (reversing valve relay) is deenergized and the reversing valve switches back to heating operation. Both the outdoor and indoor fans come back on, and if necessary, the electric heater also turns on. System safeties The system is equipped with the following safety devices to protect system components: Indoor coil freeze protection thermostat (cooling cycle only). If a coil temperature of 28 F or lower is sensed, the compressor and outdoor fan will be shut down until the coil temperature exceeds 28 F. The indoor fan will continue to run. Condensate float switch (units equipped with accessory condensate pump, cooling cycle only) If the level of condensate in the drain pan rises too high the condensate float switch will turn off the compressor and outdoor fan until the condensate level returns to normal. The indoor fan will continue to run. Special operation heat mode Outdoor cooling units can be matched with heat pump ceiling-suspended fan coil units to provide supplemental electric heat. All other operation is the same as a cooling only system, except these units have the following heating capability: When the room thermostat initiates a call for heating, the electric heater is turned on. The indoor unit fan will start at the same time if it was not already operating. When the heating requirement is satisfied, the room thermostat will open and the heater will turn off. 13
Guide specifications 40QA ceiling-suspended cooling only units Commercial Air-Cooled Condensing Units HVAC Guide Specifications Size Range: 1 1 / 2 to 5 Tons, Cooling Capacity Carrier Model Numbers: 40QAB and 40QAE Part 1 General 1.01 SYSTEM DESCRIPTION Indoor, direct expansion, ceiling-suspended fan coil. 1.02 QUALITY ASSURANCE A. Systems shall be rated and certified in accordance with ARI Standards 210/240. Units shall be listed in the ARI directory as a matched set. B. Systems shall be listed with UL (Underwriters Laboratories) and UL, Canada. 1.03 DELIVERY, STORAGE, and HANDLING Units shall be shipped in one piece and shall be stored and handled per unit manufacturer s recommendations. 1.04 WARRANTY The 40QA unit is covered by a 1-year parts warranty. Part 2 Products 2.01 EQUIPMENT A. General: Indoor, direct-expansion, ceiling-suspended fan coil. Fan coil shall be shipped complete with cooling coil, fan, fan motor, piping connectors, and ceiling mounting brackets. B. Unit Cabinet: 1. Unit cabinet shall be zinc-coated bonderized steel finished with a baked enamel paint. 2. Inlet grilles shall be attractively styled, highimpact polystyrene. 3. Matching mounting brackets shall be provided. C. Fans: 1. Indoor fans shall be 3-speed centrifugal blower type with air intake in the bottom rear of the unit and discharge in the front. 2. Automatic, motor-driven horizontal air sweep shall be provided standard. D. Coils: 1. Indoor coils shall be copper tube with aluminum fins and galvanized steel tube sheets. 2. Fins shall be bonded to the tubes by mechanical expansion. 3. A drip pan under the coil shall have a drain connection for the hose attachment to remove condensate. NOTE: Units use the AccuRater piston refrigerant metering device in the indoor unit for cooling and the AccuRater liquid line service valve for heating. E. Motors: Motors shall be a permanently lubricated ball bearing with inherent overload protection. F. Refrigeration Components (Condenser): Refrigerant circuit components shall include brass external vapor supply line service valve(s), vapor return line service valve(s) with service gage connection port, service gage port connections on compressor suction and discharge lines with Schradertype fittings (located at outdoor unit). G. Filters: Unit shall have filter track with field-supplied cleanable filters. H. Thermostat Controls: 1. Automatic restart after power failure at the same operating conditions as at failure. 2. Thermostat control to enter set points and operating conditions. 3. Cooling mode to provide modulating fan speed based on the difference between temperature setpoint and space temperature. 4. Fan-only operation to provide room air circulation when no cooling is required. 5. Fan speed control shall be user-selectable: high, medium, low, or automatic operation during all operating modes. 6. A time delay shall prevent compressor restart in less than 2 to 4 minutes. 7. Automatic heating-to-cooling changeover to provide automatic heating and cooling operation. Control shall include deadband to prevent rapid mode cycling. NOTE: See selected thermostat instructions for further information. I. Electrical Requirements: 1. Unit shall operate on single-phase, 60 cycle power at 208/230 v as specified on the equipment schedule. 2. Unit electrical power shall be a single point connection. 3. Unit control voltage shall be 24-v. All power and control wiring shall be installed per NEC and all local building codes. 4. Unit shall have low-voltage terminal block connections. 14
J. Special Features (Field Installed): 1. Internal Condensate Pump: The condensate pump shall remove condensate from the drain pan when gravity drainage cannot be used. The lift capability of the condensate pump shall be direct vertical 20 inches. Float control shall be in the condensate sump to shut the unit down in case of a pump malfunction. 2. Fresh Air Intake kit: The fresh air intake kit shall include the filter and duct connections to provide for outdoor ventilation air. 3. Power Ventilation Kit: The power ventilation kit shall be used with the accessory fresh air kit when fresh air must be ducted in. The kit will overcome duct static to provide a constant supply of ventilation air. The kit consists of booster fan and adjustable speed control to properly balance the fan to achieve the required airflow rate. 4. Slim Line Thermostat: The Slim Line thermostat shall incorporate 3-speed control, programmability, autochangeover, backlight, locking keypad and a large LCD display. 5. Flat Stat Thermostat: The Flat Stat thermostat shall incorporate 3-speed control, programmability, autochangeover, backlight, locking keypad and a large LCD display that is mounted flush to the wall. (Cooling only and heat/cool systems only.) 6. NP-Thermostat: The NP-thermostat shall include 3-speed control, 5-1-1 (Monday through Friday - Saturday - Sunday) programmability, autochangeover, backlight, locking keypad and a large LCD display. (Cooling only and heat/cool systems only.) 15
Carrier Corporation Syracuse, New York 13221 9-04 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 New Book 2 Pg 16 Catalog No. 524-083 Printed in U.S.A. PC 111 Form 40QA-1PD Tab 3e 2f Tab 2DF Replaces: New