Carrier 50HCQ07 Installation Instructions Manual

8INSTALLATIONJobsite SurveyComplete the following checks before installation.1. Consult local building codes and the NEC (National Elec-trical Code) ANSI/NFPA 70 for special installationrequirements.2. Determine unit location (from project plans) or select unitlocation.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 the 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. 4.NOTE: Consider also the effect of adjacent units.Unit may be installed directly on wood flooring or on Class A,B, or C roof-covering material when roof curb is used.Do not 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 permit wa-ter from higher level runoff and overhangs to fall onto unit.Select a unit mounting system that provides adequate height toallow installation of condensate trap per requirements. Refer toStep 10 — Install External Condensate Trap and Line on page14 for required trap dimensions.Fig. 4 — Service Clearance Dimensional DrawingNOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning overheadobstruction or for vertical clearances.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 (3 m) 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 outletCDAB