Bard WA3S1 Installation Instructions Manual

Contents

Bard WA3S1 Installation Instructions Manual Manual pdf 7 page image

Manual 2100-451EPage 7 of 24SHIPPING DAMAGEUpon receipt of equipment, the carton should be checkedfor external signs of shipping damage. If damage isfound, the receiving party must contact the last carrierimmediately, preferably in writing, requesting inspectionby the carrier’s agent.GENERALThe equipment covered in this manual is to be installedby trained, experienced service and installationtechnicians.The refrigerant system is completely assembled andcharged. All internal wiring is complete.The unit is designed for use with or without duct work.Flanges are provided for attaching the supply and returnducts.These instructions explain the recommended method toinstall the air cooled self-contained unit and theelectrical wiring connections to the unit.These instructions and any instructions packaged withany separate equipment required to make up the entireair conditioning system should be carefully read beforebeginning the installation. Note particularly “StartingProcedure” and any tags and/or labels attached to theequipment.While these instructions are intended as a generalrecommended guide, they do not supersede any nationaland/or local codes in any way. Authorities havingjurisdiction should be consulted before the installation ismade. See Page 3 for information on codes andstandards.Size of unit for a proposed installation should be basedon heat loss calculation made according to methods ofAir Conditioning Contractors of America (ACCA). Theair duct should be installed in accordance with theStandards of the National Fire Protection Association forthe Installation of Air Conditioning and VentilatingSystems of Other Than Residence Type, NFPA No.90A, and Residence Type Warm Air Heating and AirConditioning Systems, NFPA No. 90B. Where localregulations are at a variance with instructions, installershould adhere to local codes.DUCT WORKAll duct work, supply and return, must be properly sizedfor the design air flow requirement of the equipment.Air Conditioning Contractors of America (ACCA) is anexcellent guide to proper sizing. All duct work orportions thereof not in the conditioned space should beproperly insulated in order to both conserve energy andprevent condensation or moisture damage.Refer to Table 9 for maximum static pressure availablefor duct design.Design the duct work according to methods given by theAir Conditioning Contractors of America (ACCA).When duct runs through unheated spaces, it should beinsulated with a minimum of 1-inch of insulation. Useinsulation with a vapor barrier on the outside of theinsulation. Flexible joints should be used to connect theduct work to the equipment in order to keep the noisetransmission to a minimum.A 1/4 inch clearance to combustible material for the firstthree feet of duct attached to the outlet air frame isrequired. See Wall Mounting Instructions and Figures 3and 4 for further details.Ducts through the walls must be insulated and all jointstaped or sealed to prevent air or moisture entering thewall cavity.Any grille that meets the 5/8 inch louver criteria, may beused. It is recommended that Bard Return Air Grille KitRG-5 or RFG-5 be installed when no return duct is used.Contact distributor or factory for ordering information.If using a return air filter grille, filters must be ofsufficient size to allow a maximum velocity of 400 fpm.NOTE: If no return air duct is used, applicableinstallation codes may limit this cabinet toinstallation only in a single story structure.FILTERSA 2-inch pleated filter is supplied with each unit. Thefilter slides into position making it easy to service. Thisfilter can be serviced from the outside by removing theservice door. The internal filter brackets are adjustableto accommodate the 1-inch filter by bending up the tabsto allow spacing for the 1-inch filters.CONDENSATE DRAINA plastic drain hose extends from the drain pan at the topof the unit down to the unit base. There are openings inthe unit base for the drain hose to pass through. In theevent the drain hose is connected to a drain system ofsome type, it must be an open or vented type system toassure proper drainage.CAUTIONSome installations may not require any returnair duct. A return air grille is required withinstallations not requiring a return air duct.The spacing between louvers on the grilleshall not be larger than 5/8 inches.