Carrier 50TCQA04 Installation Instructions Manual

Also see for WeatherMaker 50TCQA07: Installation instructions Installation instructions Service and maintenance instructions

9Table 4 – Operating Weights50TCQA UNITS LB (KG)Component A04 A05 A06 A07Base Unit 505 (229) 510 (231) 590 (268) 630 (286)EconomizerVertical 50 (23) 50 (23) 50 (23) 50 (23)Horizontal 70 (48) 70 (48) 70 (48) 70 (48)Powered Outlet 35 (16) 35 (16) 35 (16) 35 (16)Curb14--- in./356 mm 115 (52) 115 (52) 115 (52) 115 (52)24--- in./610 mm 197 (89) 197 (89) 197 (89) 197 (89)INSTALLATIONJobsite 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 minimum clearances requiredfor safety (including clearance to combustible surfaces),unit performance and service access below, around andabove unit as specified in unit drawings. See Fig. 3 (onpage 7).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 or other sources of contaminatedair.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 10 — Install External Condensate Trap andLine (on page 14) – for required trap dimensions.Roof Mount —Check building codes for weight distribution requirements.Unit operating weight is shown in Table 4.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, oncurb--mounted units, some accessories must be installed onthe unit before the unit is placed on the curb. Review thefollowing for recommended sequences for installation 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 10 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.Insulate and weatherproof all external ductwork, joints,and roof openings with counter flashing and mastic inaccordance with applicable codes.