Carrier SINGLE PACKAGE ROOFTOP 48HC Installation Instructions Manual

Also see for 48TC*D: Service and maintenance instructions Installation instructions

19Step 11 — Install External Condensate Trap andLineThe unit has one 3 / 4 -in. condensate drain connection onthe end of the condensate pan (see Fig. 21). See Figs. 1, 2and 3, item “E”, in the view labeled “BACK(HORIZONTAL DISCHARGE)” for the location of thecondensate drain connection.CONDENSATEDRAINCONNECTIONC10729Fig. 21 -- Condensate Drain Pan ConnectionThe piping for the condensate drain and external trap canbe completed after the unit is in place. Hand tightenfittings to the drain pan fitting. Provide adequate supportfor the drain line. Failure to do so can result in damage tothe drain pan. See Fig. 22.NOTE: Trap should be deep enough to offset maximum unit staticdifference. A 4” (102) trap is recommended.MINIMUM PITCH1” (25mm) PER10’ (3m) OF LINE BASE RAILOPENVENTTO ROOFDRAINDRAIN PLUGROOFCURBSEE NOTE2˝ (51) MINC08022Fig. 22 -- Condensate Drain Piping DetailsAll units must have an external trap for condensatedrainage. Install a trap at least 4-in. (102 mm) deep andprotect against freeze-up. If drain line is installeddownstream from the external trap, pitch the line awayfrom the unit at 1-in. per 10 ft (25 mm in 3 m) of run. Donot use a pipe size smaller than the unit connection( 3/4 -in.).Step 12 — Make Electrical ConnectionsELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personalinjury or death.Do not use gas piping as an electrical ground. Unitcabinet must have an uninterrupted, unbroken electricalground to minimize the possibility of personal injury ifan electrical fault should occur. This ground may consistof electrical wire connected to unit ground lug in controlcompartment, or conduit approved for electrical groundwhen installed in accordance with NEC (NationalElectrical Code); ANSI/NFPA 70, latest edition (inCanada, Canadian Electrical Code CSA [CanadianStandards Association] C22.1), and local electricalcodes.! WARNINGNOTE: Field--supplied wiring shall conform with thelimitations of minimum 63_F (33_C) rise.Field Power Supply —If equipped with optional Powered Convenience Outlet:The power source leads to the convenience outlet’stransformer primary are not factory connected. Installermust connect these leads according to required operationof the convenience outlet. If an always--energizedconvenience outlet operation is desired, connect thesource leads to the line side of the unit--mounteddisconnect. (Check with local codes to ensure this methodis acceptable in your area.) On a unit without aunit--mounted disconnect, connect the source leads to theline side with unit field power leads. See Fig. 23.LOADSIDESEEDETAIL ADETAIL ALINESIDEBLKYELBLUCONTROL BOXL3L2L1C11181Fig. 23 -- Location of TB1Field power wires are connected to the unit at line--sidepressure lugs on the terminal block (see wiring diagramlabel for control box component arrangement) or atfactory--installed option non--fused disconnect switch. Usecopper conductors only.NOTE: Make field power connections directly to lineconnection pressure lugs only.48HC