Carrier 50HCQ12 Installation Instructions Manual

Also see for 50HCQ12: Installation instructions

11The piping for the condensate drain and external trap canbe completed after the unit is in place. See Fig. 15.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. 15 -- 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 10 — 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, unbrokenelectrical ground to minimize the possibility ofpersonal injury if an electrical fault should occur. Thisground may consist of electrical wire connected tounit ground lug in control compartment, or conduitapproved for electrical ground when installed inaccordance with NEC (National Electrical Code);ANSI/NFPA 70, latest edition (in Canada, CanadianElectrical Code CSA [Canadian StandardsAssociation] C22.1), and local electrical codes.! WARNINGNOTE: Check all factory and field electrical connectionsfor tightness. Field--supplied wiring shall conform withthe limitations of 63_F (33_C) rise.Field Power Supply —For those units without through--the--curb power, conduitmust be used to route the main power from the condenserend of the unit to either the factory option disconnect, thebottom of the control box or the single point box accessory.1” conduit is provided behind the access panel located underthe control box. For those units that require conduit largerthan 1”, it must be field supplied. Figures 16, 17 and 18show the various wire routings.C10010Fig. 16 -- Conduit into Factory Option DisconnectC10011Fig. 17 -- Conduit into Control BoxC10012Fig. 18 -- Conduit into Single Point BoxIf the field disconnect is larger than 100A, it must beattached to the unit using accessory CRDISBKT001A00 (seeFig. 19). Follow the instructions provided with thisaccessory. For smaller field disconnects, be sure to use 1/2”screws to mount the disconnect directly to the end panel,following the instructions on the Field Disconnect Warninglabel (see Fig. 20). In either case, set the disconnect verticallocation on the unit so that a 90_ fitting can be used toconnect the conduit to the disconnect.50HCQD12