Carrier WeatherMaster 50HC14 Installation Instructions Manual

Also see for WeatherMaster 50HC14: Service and maintenance instructions Service and maintenance instructions Installation instructions

Contents

7Step 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.CURB-MOUNTED INSTALLATION1. Install curb.2. Install field-fabricated ductwork inside curb.3. 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 9 fordetails).5. Rig and place unit.6. Install outdoor air hood.7. Install condensate line trap and piping.8. Make electrical connections.9. Install other accessories.PAD-MOUNTED INSTALLATION1. Prepare pad and unit supports.2. Check and tighten the bottom condensate drain connec-tion plug.3. Rig and place unit.4. Convert unit to side duct connection arrangement.5. Install field-fabricated ductwork at unit duct openings.6. Install outdoor air hood.7. Install condensate line trap and piping.8. Make electrical connections.9. Install other accessories.FRAME-MOUNTED INSTALLATIONFrame-mounted applications generally follow the se-quence for a curb installation. Adapt as required to suit spe-cific installation plan.Step 3 — Inspect UnitInspect unit for transportation damage. File any claim withtransportation agency.Confirm before installation of unit that voltage, amperageand circuit protection requirements listed on unit data plateagree with power supply provided.On units with hinged panel option, check to be sure alllatches are snug and in closed position.Locate the carton containing the outside air hood parts; seeFig. 13 and 14. Do not remove carton until unit has beenrigged and located in final position.Step 4 — Provide Unit SupportROOF CURB MOUNTAccessory roof curb details and dimensions are shown inFig. 4. Assemble and install accessory roof curb in accor-dance with instructions shipped with the curb.NOTE: The gasketing of the unit to the roof curb is critical for awatertight seal. Install gasket supplied with the roof curb asshown in Fig. 4. Improperly applied gasket can also result in airleaks and poor unit performance.Curb should be level. This is necessary for unit drain tofunction properly. Unit leveling tolerances are show in Fig. 5.Refer to Accessory Roof Curb Installation Instructions foradditional information as required.