Carrier 48TC Installation Instructions Manual

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3UNIT OPERATION AND SAFETY HAZARDFailure to follow this warning could cause personalinjury, death and/or equipment damage.Puronr (R--410A) refrigerant systems operate athigher pressures than standard R--22 systems. Do notuse R--22 service equipment or components on Puronrefrigerant equipment.! WARNINGINSTALLATIONJobsite 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 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. 2.18” (457)42" (1067)18" (457)42" (1067)1Required bottom condensate drain connection.Otherwise, 36” (914mm) for condensate connection.1C07459Fig. 2 -- Service Clearance Dimensional DrawingNOTE: Consider also the effect of adjacent units.Be sure that unit is installed such that snow will not blockthe combustion intake or flue outlet.Unit may be installed directly on wood flooring or onClass A, B, or C roof--covering material when roof curb isused.Do not install unit in an indoor location. Do not locate airinlets near exhaust vents or other sources of contaminatedair. For proper unit operation, adequate combustion andventilation air must be provided in accordance withSection 5.3 (Air for Combustion and Ventilation) of theNational Fuel Gas Code, ANSI Z223.1 (AmericanNational Standards Institute) and NFPA (National FireProtection Association) 54 TIA----54----84----1. In Canada,installation must be in accordance with the CAN1----B149installation codes for gas burning appliances.Although unit is weatherproof, avoid locations that permitwater from higher level runoff and overhangs to fall ontothe unit.Locate mechanical draft system flue assembly at least 4 ft(1.2 m) from any opening through which combustionproducts could enter the building, and at least 4 ft (1.2 m)from any adjacent building (or per local code). Locate theflue assembly at least 10 ft (3.05 m) from an adjacentunit’s fresh air intake hood if within 3 ft (0.91 m) of sameelevation (or per local code). When unit is locatedadjacent to public walkways, flue assembly must be atleast 7 ft (2.1 m) above grade.Select a unit mounting system that provides adequateheight to allow installation of condensate trap perrequirements. Refer to Step 11 — Install External Trap forCondensate Drain – for required trap dimensions.Roof mount —Check building codes for weight distributionrequirements. Unit operating weight is shown in Table 1.Table 1 – Operating Weights48TC UNITS LB (KG)Component A04 A05 A06 A07Base Unit 483 (219) 537 (244) 569 (258) 652 (296)EconomizerVertical 50 (23) 50 (23) 50 (23) 50 (23)Horizontal 80 (36) 80 (36) 80 (36) 80 (36)Cu Fins 25 (11) 43 (20) 56 (25) 73 (33)Powered Outlet 32 (15) 32 (15) 32 (15) 32 (15)Curb14--- in/356 mm 110 (50) 110 (50) 110 (50) 110 (50)24--- in/610 mm 145 (66) 145 (66) 145 (66) 145 (66)48TC