Bard PH13242-A Installation Instructions Manual

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Bard PH13242-A Installation Instructions Manual Manual pdf 12 page image

Manual 2100-468EPage 12 of 27AIR FILTERSAir filters for the return air side of the system are notprovided as part of the various types of applications for thesemodels, and must be field supplied and installed as part ofthe final installation.Prior thought should be given to return air location andplacement of the air filter(s). The air filter(s) must be ofadequate size and readily accessible to the operator of theequipment. Filters must be adequate in size and properlymaintained for proper operation. If this is not done,excessive energy use, poor performance, and multipleservice problems will result. It is impossible to oversize airfilters. Generous sizing will result in cleaner air and coils aswell as lower operating costs and extend the time betweenrequired changes. Table 5 shows minimum filter areas andrecommended filter sizes. Actual filter sizes can vary withthe installation due to single or multiple returns utilizing afilter/grille arrangement or being placed immediately aheadof the indoor coil face in the return air duct.5. OTHER INSTALLATIONS – Many otherinstallations are possible with the packaged heatpump. No matter what the installation, alwaysconsider the following facts:A. Insure that the discharge air is not obstructed inany way so as to cause operation difficulties.B. The indoor coil drain pan is equipped with acoupling that must be piped through a condensatedrain trap to a suitable drain.C. Always mount the unit is such a position that itmay be easily reached for servicing andmaintenance.D. Insure that the unit is clear so that proper air flowover the outdoor coil will be maintained.If this unit is operated in cooling below a 55° outdoorambient temperature, the installation of low ambientcontrols (CMH-15) to unit is required.CONDENSATE DRAIN TRAPIt is very important to provide a trap in the condensatedrain line to allow a positive liquid seal in the line andassure correct drainage from the coil condensate pan.Install condensate drain trap shown in Figure 5. Use drainconnection size or larger. Do not operate unit withouttrap. Unit must be level or slightly inclined toward drain.With a trap installed on a unit located in an unconditionedarea, water in the trap may freeze. It is recommended thatthe trap material be of a type that will allow for expansionof water when it freezes.FIGURE 5CONDENSATE DRAIN TRAPNOTE: If roof hood accessory is to be used, informationon air filters may be found under that heading inthis manual. Air filters are supplied as part ofthat package.TABLE 5FILTERS REQUIRED AND SIZE.oNledoM retliFmuminiMaerAeerFmuminiMeziSdednemmoceR4231HP0331HP6331HPsehcnIerauqS304)teeFerauqS8.2( 1x02x41)2(2431HP8431HP0631HPsehcnIerauqS374)teeFerauqS3.3( 1x02x61)2(