TM 5-3895-374-24-1 GENERAL INFORMATION While these instructions are intended as a general recommended guide, they do not supersede any national and local codes in any way Authorities having jurisdiction should be consulted before the installation is made These instructions and any instructions packaged with separate equipment, required to make up the entire air conditioning system, should be carefully read before beginning the installation Note particularly "Starting Procedure" and any tags and labels attached to the equipment These instructions explain the recommended methods for installing the unit and for making the electrical wiring connections to the unit All internal wiring is complete The refrigerant system Is completely assembled and charged Service ports have been provided for field charging when needed Sizing of units for a proposed installation should be based on heat-gain and loss calculations made according to the methods of the National Warm Air Heating and Air Conditioning Association The air duct should be Installed In accordance with the Standards of the National Fire Protection Association for the Installation of Air Conditioning and Ventilating Systems of Other Than Residence Type, NFPA No 90A, and Residence Type Warm Air Heating and Air Conditioning Systems, NFPA No 90B Where local regulations are at a variance with these instructions, Installer should adhere to local codes All capacity and efficiency Information is based on units operated without a fresh air intake kit installed UNPACKING THE UNIT It Is recommended that the unit be unpacked at the installation site to minimize damage due to handling CAUTION Do not tip the unit on its side.  Oil may enter the compressor cylinders and cause starting or operating problems. 1 Cut and remove bands from around unit 2 Remove the carton from the unit 3 Inspect unit for any shipping damage In case of damage, notify carrier immediately of damage claim 4 Remove unit mounting hardware attached to sides of unit 5 If unit has been set on its side, restore it to Its upright position and do not run for several hours Then run unit for a few seconds only Repeat this three or four times at intervals of ten minutes LOCATING THE UNIT The decision on where to locate the equipment should be based on keeping the length of the supply and return air ducts to a minimum consideration should also be given to shade, noise, appearance and sufficient clearance for air flow through inlet and outlet Allow a minimum of 12" below unit and 18" on each side of unit for air flow CONDENSATE DRAIN Provide an appropriate drain system A plastic drain tube extends from the drain pan down through the unit base pan If a drain hose is connected to a drain system It must be an open or vented system to assure proper drainage DUCTWORK This unit Is designed for use WITH or WITHOUT Flanges are provided for attaching supply and return air ducts (Refer to Page 7, for examples of some typical installations with and without ductwork) Some Installations may not require a return air duct It Is recommended that on this type of installation that a filter grille be located in the wall Filters must be of sufficient size to allow a maximum of 400 FPM (Applicable Installation codes may limit an unducted return air installation to a single story residence only) Design the ductwork according to methods given by the National Warm Air Heating and Air Conditioning Association (ACCA) The ACCA Manuals provide an excellent guide to proper sizing. When a duct runs through unheated spaces, It must be well insulated to prevent heat loss and condensation Use insulation with a vapor barrier on the outside of the insulation. A one inch clearance to combustible material on all four sides of the supply air duct Is required for the first THREE FEET of duct attached to the outlet air frame for all PWY units AIR FILTER A one inch throwaway air filter is supplied with the unit The filter slides In and out making It easy to service Filter is serviced from the outside by removing the service panel RATED CFM AND E S P (WET COIL COOLING) Unit Size -018 024 030 036 042- 048 -060 Ratedcf m 720 810 112 5 1250 157 5 1700 1750 Ext sp 32 20 30 20 35 25 20 CFM AND EXTERNAL STATIC PRESSURE WET COIL PERFORMANCE Ext. s.p. Unit Size -018/-024 -030/-036 042/-0481-060 10 860 1365 - 15 850 1310 - 20 810 1250 1750 25 780 1210 1700 30 750 1125 1650 35 690 1075 1575 40 670 - 1510 50 - - 048 OPTIONAL FRESH AIR INTAKE KIT A Fresh Air Intake Kit Is available as "optional equipment" The kit Includes an adjustable damper and may be field Installed to the service panel as shown on Page 4 NOTE Some state and local codes require fresh air capability (page 3-485)