Carrier 50KC*A/B06 Series Installation Instructions Manual

6NOTE: Unit not designed to have overhead obstruction. ContactApplication Engineering for guidance on any application planningoverhead obstruction or for vertical clearances.Fig. 3 — Service Clearance Dimensional DrawingINSTALLATIONJobsite SurveyComplete the following checks before installation:1. Consult local building codes and the NEC (NationalElectrical Code) ANSI/NFPA 70 for special installationrequirements.2. Determine unit location (from project plans) or selectunit location.3. Check for possible overhead obstructions which mayinterfere with unit lifting or rigging.Step 1 — Plan for Unit LocationSelect a location for the unit and its support system (curb orother) that provides for minimum clearances required forsafety (including clearance to combustible surfaces), unit per-formance and service access below, around and above unit asspecified in unit drawings. See Fig. 3.NOTE: Consider also the effect of adjacent units.Unit may be installed directly on wood flooring or on ClassA, B, or C roof-covering material when roof curb is used. Donot install unit in an indoor location. Do not locate air inletsnear exhaust vents or other sources of contaminated air.Although unit is weatherproof, avoid locations that permitwater from higher level runoff and overhangs to fall ontounit.Select a unit mounting system that provides adequate heightto allow installation of condensate trap per requirements. Re-fer to Step 10 — Install External Condensate Trap and Line –for required trap dimensions.ROOF MOUNTCheck building codes for weight distribution requirements.Unit operating weight is shown in Table 2.Step 2 — Plan for Sequence of Unit InstallationThe support method used for this unit will dictate differentsequences for the steps of unit installation. For example, oncurb-mounted units, some accessories must be installed onthe unit before the unit is placed on the curb. Review the fol-lowing for recommended sequences for installation steps.LOCATION DIMENSION CONDITIONA48-in. (1219 mm)18-in. (457 mm)18-in. (457) mm12-in. (305 mm)Unit disconnect is mounted on panelNo disconnect, convenience outlet optionRecommended service clearanceMinimum clearanceB42-in. (1067 mm)36-in. (914 mm)SpecialSurface behind servicer is grounded (e.g., metal, masonry wall)Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)Check sources of flue products within 10-ft of unit fresh air intake hoodC 36-in. (914 mm)18-in. (457 mm)Side condensate drain is usedMinimum clearanceD42-in. (1067 mm)36-in. (914 mm)SpecialSurface behind servicer is grounded (e.g., metal, masonry wall, another unit)Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)Check for adjacent units or building fresh air intakes within 10-ft (3 m) of this unit’s flue outletCBAD