Carrier 50KC*A/B06 Series Installation Instructions Manual

7CURB-MOUNTED INSTALLATION1. Install curb2. Install field-fabricated ductwork inside curb3. Install accessory thru-base service connection package(affects curb and unit) (refer to accessory installationinstructions for details)4. Prepare bottom condensate drain connection to suitplanned condensate line routing (refer to Step 10 fordetails)5. Rig and place unit6. Install outdoor air hood7. Install condensate line trap and piping8. Make electrical connections9. Install other accessoriesPAD-MOUNTED INSTALLATION1. Prepare pad and unit supports2. Check and tighten the bottom condensate drain connec-tion plug3. Rig and place unit4. Convert unit to side duct connection arrangement5. Install field-fabricated ductwork at unit duct openings6. Install outdoor air hood7. Install condensate line trap and piping8. Make electrical connections9. Install other accessoriesFRAME-MOUNTED INSTALLATIONFrame-mounted applications generally follow the sequencefor a curb installation. Adapt as required to suit specific in-stallation plan.Step 3 — Inspect UnitInspect unit for transportation damage. File any claim withtransportation agency.Confirm before installation of unit that voltage, amperage andcircuit protection requirements listed on unit data plate agreewith power supply provided.Step 4 — Provide Unit SupportROOF CURB MOUNTAccessory roof curb details and dimensions are shown inFig. 5. Assemble and install accessory roof curb in accor-dance with instructions shipped with the curb.Curb should be level. This is necessary for unit drain to func-tion properly. Unit leveling tolerances are shown in Fig. 4.Refer to Accessory Roof Curb Installation Instructions foradditional information as required.Fig. 4 — Unit Leveling TolerancesInstall insulation, cant strips, roofing felt, and counter flash-ing as shown. Ductwork must be attached to curb and not tothe unit. The accessory thru-the-base power package must beinstalled before the unit is set on the roof curb.If electric and control wiring is to be routed through the base-pan, attach the accessory thru-the-base service connections tothe basepan in accordance with the accessory installation in-structions.NOTE: The gasketing of the unit to the roof curb is criticalfor a watertight seal. Install gasket supplied with the roof curbas shown in Fig. 5. Improperly applied gasket can also resultin air leaks and poor unit performance.SLAB MOUNT (HORIZONTAL UNITS ONLY)Provide a level concrete slab that extends a minimum of 6-in.(150 mm) beyond unit cabinet. Install a gravel apron in frontof condenser coil air inlet to prevent grass and foliage fromobstructing airflow.NOTE: Horizontal units may be installed on a roof curb ifrequired.ALTERNATE UNIT SUPPORT (IN LIEU OF CURB ORSLAB MOUNT)A non-combustible sleeper rail can be used in the unit curbsupport area. If sleeper rails cannot be used, support the longsides of the unit with a minimum of 3 equally spaced 4-in. x4-in. (102 mm x 102 mm) pads on each side.Table 2 — Operating Weights50KC UNITS LB (KG) UNITS LB (KG) UNITS LB (KG)04 05 06Base Unit 445 (201) 499 (226) 552 (250)EconomizerVerticalHorizontal50 (23)80 (36)50 (23)80 (36)50 (23)80 (36)Humidi-MiZer ® System 50 (23) 50 (23) 50 (23)Cu Fins 25 (11) 43 (20) 56 (25)Powered Outlet 35 (16) 35 (16) 35 (16)Curb14-in./356 mm24-in./610 mm115 (52)197 (89)115 (52)197 (89)115 (52)197 (89)ABCMAXIMUM ALLOWABLEDIFFERENCE in. (mm)A-B B-C A-C0.5 (13) 1.0 (25) 1.0 (25)