Carrier 58CTA Installation And Service Instructions Manual

Also see for 58CTA: Product data Installation, start-up, operating and service and maintenance instructions

Carrier 58CTA Installation And Service Instructions Manual Manual pdf 19 page image

NOTE: For horizontal applications, the top-most flange may bebent past 90 degrees to allow the evaporator coil to hang on theflange temporarily while the remaining attachment and sealing ofthe coil are performed.Downflow FurnacesConnect supply-air duct to supply-air outlet on furnace. Bendflange inward past 90° with wide duct pliers. (See Fig. 14.) Thesupply-air duct must be connected to ONLY the furnace supply-outlet or air conditioning coil casing (when used). When installedon combustible material, supply-air duct must be connected toONLY the accessory subbase, KGASB0201ALL, or a factoryapproved air conditioning coil casing. DO NOT cut main furnacecasing to attach supply side air duct, humidifier, or other accesso-ries. All accessories MUST be connected to duct external tofurnace casing.Return Air ConnectionsFIRE HAZARDFailure to follow this warning could cause a fire, personalinjury, or death.Never connect return-air ducts to the back of the furnace.Follow instructions below.Downflow FurnacesThe return-air duct must be connected to return-air opening(bottom inlet) as shown in Fig. 1. DO NOT cut into casing sides(left or right). Side opening is permitted for only upflow and mosthorizontal furnaces. Bypass humidifier connections should bemade at ductwork or coil casing sides exterior to furnace. (See Fig.19.)Upflow and Horizontal FurnacesThe return-air duct must be connected to bottom, sides (left orright), or a combination of bottom and side(s) of main furnacecasing as shown in Fig. 1. Bypass humidifier may be attached intounused return air side of the furnace casing. (See Fig. 18 and 20.)Not all horizontal furnaces are approved for side return airconnections. (See Fig. 20.)GAS PIPINGFIRE OR EXPLOSION HAZARDFailure to follow this warning could result in personal injury,death, and/or property damage.Never purge a gas line into a combustion chamber. Never testfor gas leaks with an open flame. Use a commerciallyavailable soap solution made specifically for the detection ofleaks to check all connections.FIRE OR EXPLOSION HAZARDFailure to follow this warning coud result in personal injury,death, and/or property damage.Use proper length of pipe to avoid stress on gas controlmanifold and a gas leak.Gas piping must be installed in accordance with national and localcodes. Refer to current edition of NFGC in the U.S. and theNSCNGPIC in Canada.Installations must be made in accordance with all authoritieshaving jurisdiction. If possible, the gas supply line should be aseparate line running directly from meter to furnace.NOTE: In the state of Massachusetts:1. Gas supply connections MUST be performed by a licensedplumber or gas fitter.2. When flexible connectors are used, the maximum lengthshall not exceed 36 inches (915 mm).3. When lever handle type manual equipment shutoff valves areused, they shall be T-handle valves.4. The use of copper tubing for gas piping is NOT approved bythe state of Massachusetts.Table 5—Air Delivery - CFM (With Filter)* (Continued)FURNACESIZERETURN-AIRINLET SPEED EXTERNAL STATIC PRESSURE (IN. WC)0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0048135BottomorSide(s)HighMed-HighMed-LowLow2090179015451325201017551525132019301705150012951835164014501265171015501380121015901465131511501470136012159951335121010058651025945855745835785670540066135BottomOnlyHighMed-HighMed-LowLow2485219518801640240021501850163523102090182016152215200017801585211019201715153020001825163514651880172015401370172515651415125515351405129011501355125511601040Bottom Sides or1 Side & BottomHighMed-HighMed-LowLow--218018801640--214518501635238520601820161523052010178015852195194517151530208518651635146519601765154013701825166014151255167015151290115014651325116010401 Side OnlyHighMed-HighMed-LowLow232021251845164022502065182516202155199517651580205519101710154019701815165014851855171015701410172516101475133016001490137012201450134012401080128011751100960060155BottomOnlyHighMed-HighMed-LowLow2465211518001570243021051790156523752075177015502305203017351525223019801695149521101910164014452000183015701370186517251465127017251590134511751545142512251070Both Sides Or1 Side & BottomHighMed-High--2155--213523752095228520402200197521051895199517901870168517301550157014001 Side Only HighMed-High--2140--20952260204021801975208518901975181018651705174015951605148014551325*A filter is required for each return-air inlet. Airflow performance included 1-in. washable filter media such as contained in factory-authorized accessory filter rack. Todetermine airflow performance without this filter, assume an additional 0.1 in. wc available external static pressure.-- Indicates unstable operating conditions.17→→→