Carrier PH5G-B Installation Instruction

PH5G-B: Installation InstructionManufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.93. Use flexible transition between rigid ductwork and unit to preventtransmission of vibration. The transition may be screwed or boltedto duct flanges. Use suitable gaskets to ensure weather-tight andairtight seal.4. All units must have field-supplied filters or accessory filter rackinstalled in the return-air side of the unit. Recommended sizes forfilters are shown in Table 3.5. Size all ductwork for maximum required airflow (either heating orcooling) for unit being installed. Avoid abrupt duct size increases ordecreases or performance may be affected.6. Adequately insulate and weatherproof all ductwork locatedoutdoors. Insulate ducts passing through unconditioned space, anduse vapor barrier in accordance with latest issue of Sheet Metal andAir Conditioning Contractors National Association (SMACNA)and Air Conditioning Contractors of America (ACCA) minimuminstallation standards for heating and air conditioning systems.Secure all ducts to building structure.7. Flash, weatherproof, and vibration-isolate all openings in buildingstructure in accordance with local codes and good buildingpractices.A07925Fig. 7 – Unit Leveling TolerancesA07926Fig. 8 – Slab Mounting DetailStep 6 – Provide for Condensate DisposalNOTE: Ensure that condensate-water disposal methods comply withlocal codes, restrictions, and practices.The unit disposes of condensate through a 3/4 in. NPT female fitting thatexits on the compressor end of the unit. Condensate water can be draineddirectly onto the roof in rooftop installations (where permitted) or onto agravel apron in ground level installations. Install a field-suppliedcondensate trap at end of condensate connection to ensure properdrainage. Make sure that the outlet of the trap is at least 1 in. (25 mm)lower than the drain-pan condensate connection to prevent the pan fromoverflowing. Prime the trap with water. When using a gravel apron,make sure it slopes away from the unit.If the installation requires draining the condensate water away from theunit, install a field-supplied 2 -in. (51mm) trap at the condensateconnection to ensure proper drainage. Condensate trap is available as anaccessory or is field-supplied. Make sure that the outlet of the trap is atleast 1 in. (25 mm) lower than the unit drain-pan condensate connectionto prevent the pan from overflowing. Connect a drain tube using aminimum of field-supplied 3/4-in. PVC or field-supplied 3/4-in. copperpipe at outlet end of the 2-in. (51 mm) trap. (See Fig. 9) Do not undersizethe tube. Pitch the drain tube downward at a slope of at least 1 in. (25mm) every 10 ft (3 m) of horizontal run. Be sure to check the draintrough for leaks. Prime the trap at the beginning of the cooling seasonstart-up.A09052Fig. 9 – Condensate TrapStep 7 – Install Electrical ConnectionsABCMAXIMUM ALLOWABLEDIFFERENCE in. (mm)A-C1/4 1/4 1/4(6.35) (6.35) (6.35)A-B B-COPTIONALRETURNAIROPENINGOPTIONALSUPPLYAIROPENINGEVAP. COIL COND. COILß(50.8mm)CAUTION!UNIT COMPONENT DAMAGE HAZARDFailure to follow this caution may result in damage to the unit beinginstalled.1. Make all electrical connections in accordance with NEC NFPA70 (latest edition) and local electrical codes governing suchwiring. In Canada, all electrical connections must be inaccordance with CSA standard C22.1 Canadian Electrical CodePart 1 and applicable local codes. Refer to unit wiring diagram.2. Use only copper conductor for connections betweenfield-supplied electrical disconnect switch and unit. DO NOTUSE ALUMINUM WIRE.3. Be sure that high-voltage power to unit is within operatingvoltage range indicated on unit rating plate. On 3-phase units,ensure phases are balanced within 2 percent. Consult localpower company for correction of improper voltage and/or phaseimbalance.4. Do not damage internal components when drilling through anypanel to mount electrical hardware, conduit, etc.5. Route field power supply(s) away from areas that could bedamaged by lawn and garden equipment or other accidentaldamage.WARNING!ELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personal injury or death.The unit cabinet must have an uninterrupted, unbroken electricalground. This ground may consist of an electrical wire connected to theunit ground screw in the control compartment, or conduit approved forelectrical ground when installed in accordance with NEC,NFPA 70National Fire Protection Association (latest edition) (in Canada,Canadian Electrical Code CSA C22.1) and local electrical codes.TRAPOUTLET1-in. (25 mm) min.2-in. (51 mm) min.