Manual

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LIMITATIONS
The unitshouldbe installedin accordance with all national and localsafetycodes.
Limitationsofthe unit and appropriateaccessoriesmust alsobe observed.
TheunitmustNOTbeinstalledwithanyductworkin the outdoorairstream.Theoutdoorfan is notdesignedtooperate
againstany additionalstaticpressure.
Minimumand maximum,operatingconditionsmust be observed to assure maximumsystem performancewith
minimum servicerequired.
TABLE1 - APPLICATIONLIMITATIONS
.
OUTDOORAMBIENTAIR TEMP. OF
MIN. OB" COOL MAX. OB
65 COOL HEAT
125 75
DUCTWORK
INDOORAMBIENTTEMP. OF
MIN. MAX.
DB/WB DB DB/WB DB
COOL HEAT COOL HEAT
62/57 50 90/72 80
Ductworkshouldbe designed_lndsized accordingto applicablemethodsfrom the AirConditioning Contractors of
America(ACCA).
It is recommendedthatsupplyand return duct connectionsat theunit be madewith flexible joints.
The supptyandreturn air ductsystemsshouldbedesignedfor the CFM staticrequirementsof thejob. Theyshould
NOTbe sized to matchthe dimensionsof the ductconnectionsonthe unit,
NOTE:SUPPLYDUCTFLANGESARESHIPPEDFLATANDMUSTBEBENTUPBEFOREATTACHINGTHESUPPLYDUCT.
Toconnectthe returnducttotheunit.usea straightpieceof duct 22" wideby 7" deep.Insert theductintothe return
openinginthe bottomof the unit. Flangethe ductovertheexistingflanges aroundtheopeninginsideunit. Makesure
thatallsidesof theductare flangedovertopermitremovalofcoolingchassisif required.Usea flexible connectionto
attachremainderofreturnduct. Thereturnductshouldbesealedtotheunit casingandterminateoutsidethespace
containingthefurnace.
NOTE:THE RETURNDUCTMUST ALLOWFORTHE UNIT DRAINPANCONNECTIONSAND DRAINTUBE.
CAUTION:DONOTSCREWINTOTHE SIDEOF THEDRAINPAN.
AIR FILTER
Allindoor return airmust be filtered.A permanent-typefilter isfurnished withthe unit,locateddirectly behindtheac-
cess panel. Removingthe panel permits access to the filter.
Thefiltershouldbe cleanedat leastthreetimesduring eachof the heatingandcoolingseasons,or more frequently if
unusual conditionsare encountered. To clean the permanent filter, shake filter to removeexcessdirt and/or use
vacuum cleaner. Wash filter in soap or detergent water and replace after filter is dry.
The filtersupplied neednot be oiled after washing.