Bard WH183 Installation Instructions Manual

Manual 2100-373Page 4Size 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 Associationfor the 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 WORKAny heat pump is more critical of proper operatingcharge and an adequate duct system that a straight airconditioning unit. All duct work, supply and return,must be properly sized for the design air flowrequirement of the equipment. Air ConditioningContractors of America (ACCA) is an excellent guideMaximum size of the time delay fuse or HACR type circuit breaker for protectionof field wiring conductors.Based on 75° C copper wire. All wiring must conform to NEC and all localcodes.Maximum KW that can operate with heat pump on.These “Minimum Circuit Ampacity” values are to be used for sizing the fieldpower conductors. Refer to the National Electric Code (latest revision), article310, for power conductor sizing. CAUTION: When more than one fieldpower conductor circuit is run through one conduit the conductors must bederated. Pay special attention to note 89 of table 310 regarding AmpacityAdjustment Factors when more than 3 are in a raceway.TIUCRICELGNISledoMdetaRstloVdnaesahPdleiF.oNrewoPstiucriCm muminiMtiucriCyticapmAj mumixaMlanretxEroesuFtiucriCrekaerBkdleiFrewoPeziSeriWk dnuorGeziSeriWZ0A,00A-381HW40Al 80A1-802/03211171839552040621016210101Z0A,00A-242HW40Al 80A1-802/03211181930652040621016210101Z0B,00B-242HW60B 1-802/032 11513302532182101Z0C,00C-242HW60C 3-064 11871510241214121TABLE 2ELECTRICAL SPECIFICATIONSto proper sizing. All duct work or portions thereof notin the conditioned space should be properly insulated inorder to both conserve energy and prevent condensationor moisture damage.Refer to Table 10 for maximum static pressureavailable for 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 one inch of insulation.Use insulation 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 thefirst three feet of duct attached to the outlet air frame isrequired. See Pages Wall Mounting Instructions andFigure 3 for further details.