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40RU
Packaged Air-Handling Units
60 Hz
®
with Puron (R-410A) Refrigerant
Sizes 25, 28, 30
Installation, Start-Up and
Service Instructions
TABLE OF CONTENTS SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1
maintenance, or use can cause explosion, fire, electrical shock
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
or other conditions which may cause personal injury o
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4. This installation must conform with local building codes and with the NEC (National Electrical Code) or ANSI (American National Standards Institute)/NFPA (National Fire Protection Association) latest revision. Refer to ELECTRICAL SHOCK HAZARD provincial and local plumbing or wastewater codes and Failure to follow this warning could cause personal injury other applicable local codes. or death. Moving and Storage — To transfer unit from truck to Before performing service or maintenance operati
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LEGEND TXV — Thermostatic Expansion Valve NOTES: 1. Dimensions in [ ] are in millimeters. 2. Direction of airflow. 3. Recommended clearance: • Rear: 3 in. (76 mm) • Front: 2 ft, 6 in. (762 mm) • Right Side: 2 ft, 6 in. (762 mm) • Left Side: 2 ft, 6 in. (762 mm) • Local codes or jurisdiction may prevail. 4. Liquid piping not supplied by Carrier. 5. Duct flange is factory-supplied and field- installed. UNIT WEIGHT UNIT lb (kg) 40RUA*25 730 (331) 40RUS*25 683 (310) Fig.
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LEGEND TXV — Thermostatic Expansion Valve NOTES: 1. Dimensions in [ ] are in millimeters. 2. Direction of airflow. 3. Recommended clearance: • Rear: 3 in. (76 mm) • Front: 2 ft, 6 in. (762 mm) • Right Side: 2 ft, 6 in. (762 mm) • Left Side: 2 ft, 6 in. (762 mm) • Local codes or jurisdiction may prevail. 4. Liquid piping not supplied by Carrier. 5. Duct flange is factory-supplied and field- installed. 6. 40RUS may require alternate or additional field favricated popi
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Table 1A — 40RUA Physical Data, English — Cooling Units UNIT 40RUA* 25 28 30 NOMINAL CAPACITY (Tons) 20 25 30 OPERATING WEIGHT (lb) Base Unit with TXV 730 1050 1062 Plenum 225 325 325 FANS Qty...Diam. (in.) 2...15 2...18 2...18 Nominal Airflow (cfm) 8,000 10,000 12,000 Airflow Range (cfm) 6,000 – 10,000 7,500 – 12,500 9,000 – 15,000 Nominal Motor Hp (Standard Motor) 208/230-3-60 and 460-3-60 5.0 7.5 10.0 575-3-60 5.0 7.5 10.0 Motor Speed (rpm) 208/230-3-60 and 460-3-60 1745 1745 1745 575-3-60 17
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Table 1B — 40RUA Physical Data, SI — Cooling Units UNIT 40RUA* 252830 NOMINAL CAPACITY (kW) 70 87 105 OPERATING WEIGHT (kg) Base Unit with TXV 331 477 482 Plenum 102 148 148 FANS Qty...Diam. (mm) 2...381 2...457 2...457 Nominal Airflow (L/s) 3775 4119 5663 Airflow Range (L/s) 2831 – 4719 3539 – 5899 4247 – 7079 Nominal Motor kW (Standard Motor) 208/230-3-60 and 460-3-60 3.73 5.60 7.46 575-3-60 3.73 5.60 7.46 Motor Speed (r/s) 208/230-3-60 and 460-3-60 29.1 29.1 29.1 575-3-60 29.1 29.3 29.3 REFRI
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Table 1C — 40RUS Physical Data, English — Chilled Water Units UNIT 40RUS* 252830 NOMINAL CAPACITY (Tons) 20 25 30 OPERATING WEIGHT (lb) Base Unit 683 1035 1042 Plenum 225 325 325 FANS Qty...Diam. (in.) 2...15 2...18 2...18 Nominal Airflow (cfm) 8,000 10,000 12,000 Airflow Range (cfm) 6,000 – 10,000 7,500 – 12,500 9,000 – 15,000 Nominal Motor Hp (Standard Motor) 208/230-3-60 and 460-3-60 5.0 7.5 10.0 575-3-60 5.0 7.5 10.0 Motor Speed (rpm) 208/230-3-60 and 460-3-60 1745 1745 1745 575-3-60 1745 17
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Table 1D — 40RUS Physical Data, SI — Chilled Water Units UNIT 40RUS* 252830 NOMINAL CAPACITY (kW) 70 87 105 OPERATING WEIGHT (kg) Base Unit 310 469 473 Plenum 102 148 148 FANS Qty...Diam. (mm) 2...381 2...457 2...457 Nominal Airflow (L/s) 3775 4719 5663 Airflow Range (L/s) 2831 – 4719 3539 – 5899 4247 – 7079 Nominal Motor kW (Standard Motor) 208/230-3-60 and 460-3-60 3.73 5.60 7.46 575-3-60 3.73 5.60 7.46 Motor Speed (r/s) 208/230-3-60 and 460-3-60 29.1 29.1 29.1 575-3-60 29.1 29.3 29.3 CHILLED
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 4 0 R U A A 2 5 A 1 A 6 – 0 A 0 A 0 _____________ ____ ModelType Brand/Packaging 40RU = Carrier Fan Coil 0=Standard Puronr R---410A Refrigerant NotUsed Type of Coil A=PlaceHolder A=Standard DX Coil S = Chilled Water Coil ServiceOptions RefrigerantOptions 0 = Non-Painted Cabinet A=None 1=Painted Cabinet B = Steam Coil C = Hot Water Coil NotUsed A=PlaceHolder NominalTonnage 25 = 20 Tons NotUsed 28 = 25 Tons 0=PlaceHolder 30 = 30 Tons DesignRev NotUsed -
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OVERHEAD SUSPENSION ACCESSORY UNIT SIZE 25 UNIT SIZES 28, 30 NOTE: Dimensions in [ ] are millimeters Fig. 6 — Preferred Suspension Technique 10
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Unit Isolation — Where extremely quiet operation is The 40RU direct-expansion units have internal essential, install isolators between floor and base of unit, or factory-installed thermostatic expansion valves (TXVs), between ceiling and top section of unit. distributors, and nozzles for use with R-410A. See Table 2 for part numbers. Knockouts are provided in the unit corner Be sure that unit is level and adequately supported. Use posts for 40RU refrigerant piping. See Fig. 7, which also channel
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EQUALIZER LINE TXV UPPER SENSING SPLIT BULB SOLENOID* VALVE SIGHT TXV AIRFLOW GLASS 15 DIAMS 10 MIN DIAMS 8 DIAMS MIN EQUALIZER FILTER LINE TXV DRIER SENSING LOWER BULB SPLIT TXV AIRFLOW 15 DIAMS 10 MIN DIAMS 8 DIAMS MIN INDOOR COIL LEGEND: – Not required when mated to units 38AP_025 - 060 * TXV – Thermostatic Expansion Valve NOTE: Component location arrangemet shown for field installation of sight glasses, solenoid valves, filter driers, and TXV sensing bulbs. The TXVs and equilize
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Table 2 — Factory-Installed Nozzle and Distributor Data FEEDER TUBES COIL TYPE TXV DISTRIBUTOR NOZZLE † UNIT PER DISTRIBUTOR STD Qty...Part No. Qty...Part No. Qty...Part No. Qty...Size (in.) 3 2...1135 40RU*25 4 Row 2...BBIZE-8-GA 18... / 2...G6 16 3 2...1126 40RU*28 4 Row 2...BBIZE-15-GA 20... / 2...C15 16 3 2...1126 40RU*30 4 Row 2...BBIZE-15-GA 24... / 2...C17 16 † 1 Feeder tube size is / in. (6.35 mm). 4 NOTE: Hot gas bypass applications require field-supplied auxiliary side connector. Table
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Table 3 — Fitting Requirement (cont) † ACCESS CONNECTION FITTINGS REQUIRED UNIT CIRCUIT ‡ HOLE NO. TYPE (in.) 3 1 / Street Elbow 8 3 1 Suction Lower 1 / Nipple, 11 L 8 3 1 / Long Radius Elbow 8 5 / Street Elbow 8 5 1 2 Liquid Lower / Nipple, 1 / L 8 2 5 / Long Radius Elbow 8 5 40RUA28 / Street Elbow 8 5 1 3 Liquid Upper / Nipple, 19 / L 8 2 5 / Long Radius Elbow 8 3 3 1 / Nipple, 4 / L 8 16 3 1 / Long Radius Elbow 8 4 Suction Upper 3 1 1 / Nipple, 23 / L 8 4 3 1 / Long Radius Elbow 8 1 2 / Lon
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To size, design, and install chilled water piping, consult the Chillled Water Piping — See Tables 1C and 1D for Carrier System Design manual. See Fig. 11 for an example of a chilled water connecton sizes. For ease in bazing, it it recom- typical installation. Recommended fittings are listed in Table 3. mended that all internal solder joints be made before unit is placed in final position. To access 40RUS coil vents and drains, remove the unit side panel over the coil header. Vent and drain plugs
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Condensate Drain — Install a trapped condensate drain line to unit connection as shown in Fig. 12. The unit drain con- nection is a PVC stub. See Fig. 13. Some areas may require an adapter to connect to either galvanized steel or copper pipe. For these applications, install a field-supplied threaded PVC adapter. 3” MIN. [76] Fig. 13 — Drain Pan Slope Adjustment As shipped, the unit’s condensate drain pan is NOT sloped to- wards the drain connection. The pan slope must be changed to pitch towards
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21 22 23 Power Supply and Wiring — Check the unit data plate to ensure that available power supply matches electrical FAN SCROLL characteristics of the unit. Provide a disconnect switch with an FAN CONTACTOR integrated lock-out feature of size required to provide adequate BOX fan motor starting current. See Tables 4-6 for unit electrical MOTOR WIRE AND DRIVE data. ACCESS FAN DRIVE CONDENSATE PULLEY DRAIN ELECTRICAL SHOCK HAZARD CONNECTION (HORIZONTAL) Failure to follow this warning could result
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Table 4 — Electrical Data, Standard Motors FAN MOTOR POWER SUPPLY VOLTAGE † UNIT V-PH-Hz Minimum LIMITS Hp (kW) FLA MOCP Circuit Amps 208/230-3-60 187-253 5.0 (3.73) 14.6/12.8 18.3/16.0 30/25 40RUA*25 460-3-60 414-506 5.0 (3.73) 6.4 8.0 15 40RUS*25 575-3-60 518-632 5.0 (3.73) 5.1 6.4 15 208/230-3-60 187-253 7.5 (5.59) 21.4/19.4 26.9/24.3 45/40 40RUA*28 460-3-60 414-506 7.5 (5.59) 9.7 12.1 20 40RUS*28 575-3-60 518-632 7.5 (5.59) 7.8 9.8 15 208/230-3-60 187-253 10.0 (7.46) 28.2/26.8 35.3/33.5 60/6
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LEGEND EQUIP — Equipment GND — Ground HC — Heating Contactor HTR — Electric Heater IFC — Indoor-Fan Contactor IFM — Indoor-Fan Motor TB — Terminal Block T’STAT — Thermostat Factory Wiring Field Control Wiring NOTE: Use copper conductors only. Fig. 17 — Unit Wiring 19
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Table 6 — Fan Contactor Coil Data DISCHARGE CONNECTIONS — Duct flanges are factory-supplied; they are shipped inside the unit attached to MAXIMUM the hairpin end of the coil tube sheet for field installation. UNIT VOLTAGE HOLDING 40RU** (vac) Using the existing screws, install the duct flanges on the unit’s VA fan deck. Each fan discharge requires 2 flanges; each flange 25, 28, 30 24 10 must be bent in the middle to conform to the discharge opening. See Fig. 19. After flanges are installed, con
