Carrier WeatherExpert 50LC 07 Series Installation Instructions Manual

Also see for 50LC 07: Controls, Start-Up, Operation and Troubleshooting Service and maintenance instructions Service and maintenance instructions

6NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning overhead obstruc-tion or for vertical clearances.Fig. 3 — Service Clearance Dimensional DrawingINSTALLATIONJobsite 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 minimum clearances required for safe-ty (including clearance to combustible surfaces), unit perfor-mance and service access below and around unit as specified inFig. 3.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 the unit.Select a unit mounting system that provides adequate height toallow installation of condensate trap per requirements.Refer to “Step 9 — Install External Condensate Trap and Line”on page 12 for required trap dimensions.ROOF MOUNTCheck building codes for weight distribution requirements.Unit operating weight is shown in Table 2.CB ADLOCATION DIMENSION CONDITIONA48-in. (1219 mm) Unit disconnect is mounted on panel18-in. (457 mm) No disconnect, convenience outlet option18-in. (457 mm) Recommended service clearance12-in. (305 mm) Minimum clearanceB42-in. (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall)36-in. (914 mm) Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)Special Check sources of flue products within 10 ft of unit fresh air intake hoodC 36-in. (914 mm) Side condensate drain is used18-in. (457 mm) Minimum clearanceD 42-in. (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)36-in. (914 mm) Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)