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IM-SMA-0673615-03February 2019Installation InstructionsSoffit MountCompact Ceiling Mount Air HandlersElectric or No Heat, with available 5-Speed High Efficiency ECM MotorTABLE OF CONTENTSPAGEPAGEAir Handler Safety .1General & Clearances.2Tools and Parts .2Outdoor Requirements.2Installation .3Refrigerant Line Installation .3Ductwork .3Install Condensate Drain.4Refrigerant Piping .4Electrical Requirements .5Electrical Connections .5Filters .6Refrigerant Charging Instructions .6Thermostat Connections .7Wiring Diagrams .8Electrical Data .8Blower Performance Data .10Air Handler Checks .11Air Handler Maintenance .11Assistance or Service .11Warranty .12AIR HANDLER SAFETYSAFETY CONSIDERATIONSYour safety and the safety of others are very important.We have provided many important safety messages in this manual andon your appliance. Always read and obey all safety messages.This is the safety alert symbol.This symbol alerts you to potential hazards that can kill or hurtyou and others.All safety messages will follow the safety alert symbol and signal word.These signals words mean the following:DANGER: You can be killed or seriously injured if you don’timmediately follow instructions.CAUTION: Indicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury. Caution may alsobe used to alert against unsafe practices.NOTICE: Indicates a statement of company policy as the messagerelates directly or indirectly to the safety of personnel or protection ofproperty.IMPORTANT: More detailed information concerning the statement ofcompany policy as the message relates directly or indirectly to thesafety of personnel or protection of property.All safety messages will tell you what the potential hazard is, tell you howto reduce the chance of injury, and tell you what can happen if theinstructions are not followed.WARNING: Indicate a potentially hazardous situation which, if notavoided, could result in death or serious injury.Product improvement is a continuous process at Advanced Distributor Products. Therefore, product specifications are subject to change without noticeand without obligation on our part. Please contact your ADP representative or distributor to verify details. by Advanced Distributor Products. All rights reserved.2175 West Park Place Blvd., Stone Mountain, GA 30087www.adpnow.com

GENERAL & CLEARANCESThese instructions are intended as a general guide only and donot supersede any national or local codes in any way.Compliance with all local, state, or national codes pertaining tothis type of equipment should be determined prior toinstallation.WARNINGElectrical ShockDisconnect power before servicing.Read this entire instruction manual, as well as the instructionssupplied in separate equipment, before starting the installation.Replace all parts and panels before operating.All models are designed for indoor installation only.Electrically ground air handler.The installation of the air handler, field wiring, warm air ducts,etc. must conform to the requirements of the National ElectricalCode, ANSI/NFPA No. 70 (latest edition) in the United States,and any state laws, and local ordinances (including plumbingor wastewater codes). Local authorities having jurisdictionshould be consulted before installation is made. Suchapplicable regulations or requirements take precedence overthe general instructions in this manual.Connect ground wire to ground terminal marked “GRD”.Failure to do so can result in death or electrical shock.Explosion HazardKeep flammable materials and vapors,such as gasoline, away from this unit.Place this unit so that the heating elements are at least18in (46cm) above the floor for a garage insulation.This unit is certified for installation clearances to combustiblematerial as listed on the unit rating plate. Accessibility andservice clearances must take precedence over combustiblematerial clearances.Failure to follow these instructions can result in death,explosion or fire.Receiving:IMPORTANTCheck equipment for shipping damage. If you find anydamage, immediately contact the last carrier.The Clean Air Act of 1990 bans the intentional venting ofrefrigerant (CFC’s and HFC’s) as of July 1, 1992. Approvedmethods of reclaiming must be followed. Fines and/orincarceration may be levied for non-compliance.Check the unit rating plate for unit size, electric heat, coil,voltage, phase etc. to be sure unit matches requirements.OUTDOOR SYSTEM REQUIREMENTSThe air handler is designed to match, and must be used with,outdoor units as rated in AHRI. The indoor sections aremanufactured with an interchangeable refrigerant meteringdevice to provide optimum refrigerant control and systemperformance with a variety of different capacities of outdoorunits. In some cases, the AHRI rating may require that the airhandler refrigerant metering device be changed to obtain ratedperformance.DUCTWORKDuctwork should be fabricated and installed in accordance with Use of nonflammable weatherproof flexible connectors on bothlocal and/or national codes. This includes the standards of the supply and return connections at unit to reduce noiseNational Fire Protection Association for installation of Air- transmission is recommended.Conditioning and Ventilating Systems, NFPA No. 90B .The air handler is to be placed as close to the space to be airconditioned as possible. Ductwork should be run as directly aspossible to the return and supply outlets.2rev 1

INSTALLATIONInstall the conditioned air plenum, ducts and air filters (notprovided) in accordance with NFPA 90B Standard for theInstallation of Warm Air Heating and Air-Conditioning Systems(latest edition).FIGURE 1It is the installers responsibility to make sure the strength ofthe ceiling and beams are adequate to support the weight ofthe air handler. See the below table for individual weights permodel.ModelWeight (lb.)CP18, 2360CE18, 2363CP19, 24, 2965CE19, 24, 2968CP25, 3070CE25, 3073FIGURE 2The soffit mount air handler is intended to be mounted in ahorizontal position above a dropped ceiling of adequatestrength. Figure 3 illustrates the cased air handler. Foruncased installation refer to figures 1 & 2. Properly attach unitwith lag bolts and washers through the provided top plateslots.Prior to installation, the installer must also consider air duct/drain connections, power supply wiring, and proper access forservicing and inspection.For free return (non-ducted return air) installation: To ensurethat return air is being pulled from the conditioned space only,the furred down area must be completely sealed (withexception of return air grille).FIGURE 33rev 1

INSTALL CONDENSATE DRAINDetermine the drain connections to be used and note thedifference between the primary and secondary openings.Remove plugs from selected drain openings. It isrecommended that ¾″ male pipe thread PVC fittings be used atthe condensate pan. Hand tighten.the coil, air handling system or filter and will not be exposed tofreezing temperatures.If line makes a second trap, or has an extended run beforetermination, a vent tee should be installed after the trap closestto the pan. Connect the primary drain and route to an openTubing for all condensate drains should be a minimum of 7/8″ drain, sump, or sewer line.OD. The drain should be pitched downward 1″ per 10′. Install a CAUTIONtrap as close to the coil as possible (2” minimum). Refer to If the coil is located in or above a living space where damagefigure 3.may result from condensate overflow, a separate ¾″ drain mustRoute drain line so that it does not interfere with accessibility to be provided from the secondary drain connection (or a FloatSwitch can be used - refer to kit instructions for installationFIGURE 3procedures). Run this drain to a place in compliance with localDrain Trap and Vent Teeinstallation codes where it will be noticed when unit isoperational. Condensate flowing from the secondary drainindicates a plugged primary drain.Vent must extend a minimum ofDrain Pan2” above the drain pan2” Min.Prime the trap with water. Test line for leaks. Verify water flowwith unit in operation.It is recommended to install a support to the drain lineimmediately after the tee.Vent“T”Clean OutPress in(DO NOT GLUE)Drain Line3/4” MPT ConnectorReducing Tee with1” Slip Hex Plug2” Min.Pitch horizontaldrain linesdownward 1” per 10'Insulate pipe as neededREFRIGERANT PIPING & FLOW CONTROLSRefrigerant connections are 3/8″ ODF Liquid and 3/4″ ODFSuction. Refer to outdoor unit manufacturer’s recommendationon line sizing.3. Insert the desired piston into the distributor assembly.During brazing of refrigerant lines place a wet rag aroundsuction line to protect cabinet or ceiling from overheating.Maintain a minimum of 1.5″ from refrigerant brazingconnections and cabinet or ceiling.5. Re-install hex nut to body and torque to 10 ft-lbs.4. Inspect “O” ring and replace if damaged. Ensure gasket isin place.THERMAL EXPANSION VALVESAs shipped from the factory, the TXV installed in each coil ischosen for the nominal BTUH capacity of the coil. Attach andinsulate the TXV bulb outside of the cabinet to the main suctionline no more than one foot from the suction line connection.Refer to nomenclature to determine type of flow controlinstalled and needed for your application. Evaporator coils areshipped from the factory with florator pistons or TXVassemblies. Florator pistons and TXV kits are available for fieldconversion.Field installed TXV kits are also available. Refer to engineeringguide or price sheet for sizes, and kit instructions for installationprocedures.PISTONSAs shipped from the factory, the piston installed in each coil ischosen for the nominal BTUH capacity of the coil. Verify withthe condenser recommendation that proper florator piston isselected.REFRIGERANT LINE INSTALLATIONADP recommends installing a filter drier and sight glass in theliquid line. While brazing, purge the system with Nitrogen toprevent contamination. ADP recommends reattaching andinsulating the TXV sensing bulb at a 10 to 2 o’clock position onthe suction line, outside the coil housing, no more than one footfrom the connection. Evacuate the system to 500 microns toensure proper air and moisture removal (Note: Deepevacuation or triple evacuation method recommended). Openthe suction service valve slowly and allow the refrigerant tobleed into the system before opening the liquid service valve.When changing pistons use the following procedure:1. Loosen hex nut located on liquid line and separate fromdistributor assembly.2. Remove the existing piston from inside the distributorassembly4rev 1