Carrier REFRIGERANT R-410A User Manual

Installation, Start-Up andService InstructionsTABLE OF CONTENTSSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1PRE-INSTALLATION

10Fig. 6 — Preferred Suspension TechniqueOVERHEAD SUSPENSION ACCESSORYUNIT SIZE 25UNIT SIZES 28, 30NOTE: Dimensions in [ ] are millimeters

11Unit Isolation — Where extremely quiet operation isessential, install isolators between floor and base of unit, orbetween ceiling and top section of

12Fig. 8 — Face-Split Coil Suction and Liquid Line Piping (Typical)Fig. 9 — Typical Evaporator Coil Connections (40RU)Fig. 10 — TXV Sensing Bulb Locat

13Table 2 — Factory-Installed Nozzle and Distributor DataTable 3 — Fitting RequirementsUNITCOIL TYPESTDTXVQty...Part No.DISTRIBUTORQty...Part No.FEEDE

14Table 3 — Fitting Requirement (cont)‡ See Fig. 7 for access hole location by number.† Fittings are listed in order from header or tee stub connecti

15Chillled Water Piping — See Tables 1C and 1D forchilled water connecton sizes. For ease in bazing, it it recom-mended that all internal solder joint

16Condensate Drain — Install a trapped condensate drainline to unit connection as shown in Fig. 12. The unit drain con-nection is a PVC stub. See Fig.

17Power Supply and Wiring — Check the unit dataplate to ensure that available power supply matches electricalcharacteristics of the unit. Provide a di

18Table 4 — Electrical Data, Standard MotorsSee Legend and Notes below.Table 5 — Electrical Data, Alternate MotorsSee Legend and Notes below.Legend an

19Fig. 17 — Unit Wiring LEGENDNOTE: Use copper conductors only.EQUIP — EquipmentGND — GroundHC — Heating ContactorHTR — Electric HeaterIFC — Indoor

2PRE-INSTALLATION1. The power supply (v, ph, and Hz) must correspond to thatspecified on unit rating plate.2. The electrical supply provided by the ut

20Table 6 — Fan Contactor Coil DataConnecting Ductwork — Refer to the Carrier SystemDesign Manual for the recommended design and layout ofductwork. F

21Fig. 19 — Duct Flange InstallationSTART-UPBefore starting unit, check the following and correct asnecessary: • Is unit solidly supported?• Is fan ad

22Centering Fan Wheel — If fan and fan shaft assemblyare not properly centered, blades may scrape against the blowerside scroll plate or may create an

23Fig. 23 — Fan RotationFan Pulley Alignment — Align as follows:1. Loosen setscrews on pulleys.2. Align pulleys visually and tighten setscrews on fan

24Replacing Filters — Filters can be removed and in-stalled from either side of the unit. Install new filters in unitsthat have one fan as follows:1.

25Table 8A — Fan Motor Data, Standard Motor — EnglishTable 8B — Fan Motor Data, Alternate Motor — EnglishUNIT40RUA*2540RUS*2540RUA*2840RUS*2840RUA*304

26Table 8C — Fan Motor Data, Standard Motor — SITable 8D — Fan Motor Data, Alternate Motor — SIUNIT40RUA*2540RUS*2540RUA*2840RUS*2840RUA*3040RUS*30208

27Table 9A — Standard Drive Data, 60 Hz — EnglishTable 9B — Medium-Static Drive Data, 60 Hz — EnglishUNIT40RUA*2540RUS*2540RUA*2840RUS*2840RUA*3040RUS

28Table 9C — High-Static Drive Data, 60 Hz — EnglishTable 9D — Standard Drive Data, 60 Hz — SIUNIT40RUA*2540RUS*2540RUA*2840RUS*2840RUA*3040RUS*30MOTO

29Table 9E — Medium-Static Drive Data, 60 Hz — SITable 9F — High-Static Drive Data, 60 Hz — SIUNIT40RUA*2540RUS*2540RUA*2840RUS*2840RUA*3040RUS830MOTO

3Fig. 2A — Dimensions – Size 25LEGENDTXV — Thermostatic Expansion ValveNOTES:1. Dimensions in [ ] are in millimeters.2. Direction of airflow.3. R

30Table 10A — 40RU Standard Fan Performance Data —0.0-2.4 in. wg External Static Pressure — EnglishSee Legend and Notes on page 34.Table 10A — 40RU St

31Table 10B — 40RU Standard Fan Performance Data —0-600 kPa External Static Pressure — SISee Legend and Notes on page 34.Table 10B — 40RU Standard Fan

32Table 10C — 40RU High-Capacity Fan Performance Data —0.0-2.4 in. wg External Static Pressure — EnglishSee Legend and Notes on page 34.Table 10C — 40

33Table 10D — 40RU High-Capacity Fan Performance Data —0-600 kPa External Static Pressure — SISee Legend and Notes on page 34.Table 10D — 40RU High-Ca

Copyright 2009 Carrier Corp • 7310 W. Morris St. • Indianapolis, IN 46231 Printed in Mexico Edition Date: 09/09 Catalog No: 40RU-03SIManufacturer

CL-1START-UP CHECKLIST(SPLIT SYSTEMS WITH 40RU UNITS)I. PRELIMINARY INFORMATIONOUTDOOR: MODEL NO. _________________________SERIAL NO. ________________

Copyright 2009 Carrier Corp • 7310 W. Morris St. • Indianapolis, IN 46231 Printed in Mexico Edition Date: 09/09 Catalog No: 40RU-03SIManufacturer

4Fig. 2B — Dimensions – Sizes 28 and 30UNITUNIT WEIGHTlb (kg)40RUA*28 1050 (477)40RUA*30 1062 (482)40RUS*28 1035 (469)40RUS*30 1042 (473)LEGENDTXV —

5Table 1A — 40RUA Physical Data, English — Cooling UnitsLEGENDUNIT 40RUA* 25 28 30NOMINAL CAPACITY (Tons) 20 25 30OPERATING WEIGHT (lb)Base Unit with

6Table 1B — 40RUA Physical Data, SI — Cooling UnitsLEGENDUNIT 40RUA* 252830NOMINAL CAPACITY (kW) 70 87 105OPERATING WEIGHT (kg)Base Unit with TXV 331

7Table 1C — 40RUS Physical Data, English — Chilled Water UnitsLEGENDUNIT 40RUS* 252830NOMINAL CAPACITY (Tons) 20 25 30OPERATING WEIGHT (lb)Base Unit 6

8Table 1D — 40RUS Physical Data, SI — Chilled Water UnitsLEGENDUNIT 40RUS* 252830NOMINAL CAPACITY (kW) 70 87 105OPERATING WEIGHT (kg)Base Unit 310 469

9Fig. 3 — Model Number NomenclatureFig. 4 — Serial Number NomenclatureUnit Positioning — The unit can be mounted on thefloor for vertical application