Carrier 50TCQD14 Installation Instructions Manual

Also see for 50TCQD: Installation instructions

Contents

9INSTALLATIONJobsite SurveyComplete the following checks before installation.1. Consult local building codes and the NEC (NationalElectrical Code) ANSI/NFPA 70 for special installa-tion requirements.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 (curbor other) that provides for at least the minimum clearancesrequired for safety. This includes the clearance tocombustible surfaces, unit performance and service accessbelow, around and above unit as specified in unitdrawings. 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.Do not install unit in an indoor location. Do not locate airinlets near exhaust vents, relief valves, or other sources ofcontaminated air.Although unit is weatherproof, avoid locations that permitwater from higher level runoff and overhangs to fall ontothe unit.Select a unit mounting system that provides adequateheight to allow for removal and disposal of frost and icethat will form during the heating--defrost mode as well asallow installation of condensate trap per requirements.Refer to Step 9 — Install External Condensate Trap andLine – for required trap dimensions.Roof Mount —Check building codes for weight distributionrequirements. Unit operating weight is shown in Table 4.Table 4 – Operating Weights50TCQD14 UNITS LB (KG)Base Unit 1370 (623)EconomizerVertical 100 (45)Horizontal 115 (52)Powered Outlet 32 (15)Curb14--- in/356 mm 180 (82)24--- in/610 mm 235 (107)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,on curb--mounted units, some accessories must beinstalled on the unit before the unit is placed on the curb.Review the following for recommended sequences forinstallation steps.Curb--mounted installation —Install curbInstall field--fabricated ductwork inside curbInstall accessory thru--base service connection package(affects curb and unit) (refer to accessory installationinstructions for details)Prepare bottom condensate drain connection to suitplanned condensate line routing (refer to Step 9 fordetails)Rig and place unitInstall outdoor air hoodInstall condensate line trap and pipingMake electrical connectionsInstall other accessoriesPad--mounted installation —Prepare pad and unit supportsCheck and tighten the bottom condensate drainconnection plugRig and place unitConvert unit to side duct connection arrangementInstall field--fabricated ductwork at unit duct openingsInstall outdoor air hoodInstall condensate line trap and pipingMake electrical connectionsInstall other accessoriesFrame--mounted installation —Frame--mounted applications generally follow thesequence for a curb installation. Adapt as required tosuit specific installation plan.Step 3 — Inspect UnitInspect unit for transportation damage. File any claimwith transportation agency.Confirm before installation of unit that voltage, amperageand circuit protection requirements listed on unit dataplate agree with power supply provided.Step 4 — Provide Unit SupportRoof Curb Mount —Accessory roof curb details and dimensions are shown inFig. 6. Assemble and install accessory roof curb inaccordance with instructions shipped with the curb.NOTE: The gasketing of the unit to the roof curb iscritical for a watertight seal. Install gasket supplied withthe roof curb as shown in Fig. 6. Improperly appliedgasket can also result in air leaks and poor unitperformance.Curb should be level. This is necessary for unit drain tofunction properly. Unit leveling tolerances are show inFig. 7. Refer to Accessory Roof Curb InstallationInstructions for additional information as required.