Bard WG242 Installation Instructions Manual

Bard WG242 Installation Instructions Manual Manual pdf 10 page image

Manual 2100-365MPage 10 of 74See Figure 3 and clearance information in Section 9and Table 2 for additional information.Design the duct work according to methods given bythe Air Conditioning Contractors of America (ACCA).When duct runs through unheated spaces, it should beinsulated with a minimum of one inch of insulation.Use insulation with a vapor barrier on the outside ofthe insulation. Flexible joints should be used toconnect the duct work to the equipment in order tokeep the noise transmission to a minimum.A one inch clearance to combustible material for thefirst three feet of duct attached to the outlet air frame isrequired. See Wall Mounting Instructions and Figures2, 2A and 3 for further details.Ducts through the walls must be insulated and all jointstaped or sealed to prevent air or moisture entering thewall cavity.Some installations may not require any return air duct.A metallic return air grille is required with installationsnot requiring a return air duct. The spacing betweenlouvers on the grille shall not be larger than 5/8 inch.Any grille that meets with the 5/8 inch louver criteriamay be used. It is recommended that Bard Return AirGrille or Return Filter Grille be installed when noreturn duct is used. Contact distributor or factory forordering information. If using a return air filter grille,filters must be of sufficient size to allow a maximumvelocity of 400 fpm.NOTE: If no return air duct is used, applicableinstallation codes may limit this cabinet toinstallation only in a single story structure.4. HIGH ALTITUDE APPLICATIONSRatings of gas utilization equipment are based on sealevel operation and need not be changed for operationat elevations up to 6,000 feet. For operation atelevations above 6,000 feet and in the absence ofspecific recommendations from the local authorityhaving jurisdiction, equipment ratings shall be reducedas specified in Section 21.5. TRANSPORTATION DAMAGEAll units are packed securely in shipping container.All units should be carefully inspected upon arrival fordamage. In the event of damage, the consignee should:1. Note on delivery receipt of any damage to container.2. Notify carrier promptly, and request an inspection.3. In case of concealed damage, the carrier must benotified as soon as possible within 15 days afterdelivery.4. Claims for any damage, apparent or concealed,should be filed with the carrier, using the followingsupporting documents:A. Original Bill of Lading, certified copy, orindemnity bond.B. Original paid freight bill of indemnity in lieuthereof.C. Original invoice or certified copy thereofshowing trade and other discounts ordeductions.D. Copy of the inspection report issued bycarrier’s representative at the time damage isreported to carrier.6. INSTALLATIONSize of unit for proposed installation should be basedon heat loss/heat gain calculations made according tomethods of Air Conditioning Contractors of America(ACCA). The air duct should be installed inaccordance with the Standards of the National FireProtection Association for the Installation of AirConditioning and Ventilating Systems of Other ThanResidence Type, NFPA No. 90A, and Residence TypeWarm Air Heating and Air Conditioning Systems,NFPA No. 90B. Where local regulations are at avariance with instructions, installer should adhere tolocal codes.WARNINGIn all cases, there must be a metal ductconnection made to the supply air flange, anda one inch clearance to combustibles must bemaintained to this duct connection.For free blow applications, a metal sleevemust be used in the wall opening itself, againmaintaining a one inch clearance tocombustibles.Failure to use the sheet metal can causefire resulting in property damage, injury, ordeath.