K-Series (7.5-12.5 KGA) Installation Instructions - Allied Commercial

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4− Place field-provided H-style pick in place just abovetop edge of unit. Frame must be of adequatestrength and length. (H−style pick prevents damageto unit.)<strong>KGA</strong>KCAUNIT*WEIGHTLBS.14011366KG.636620RIGGINGCAUTION − Do notwalk on unit.*Maximum weight with all available installedaccessories.LIFTING POINT SHOULDBE DIRECTLY ABOVECENTER OF GRAVITYCONDENSATE SIDE DRAIN CONNECTIONCAULK AROUND CONDENSATE COUPLINGNOTE − Allow clearance toopen doors when installingcondensate piping.Minimum Pitch1" (25 mm) per OPEN VENT10’ (3 m) of lineÁUNITMOUNTINGFRAMEÁIMPORTANT − ALLPANELS MUST BE INPLACE FOR RIGGING.ÁFIGURE 3ÁCONDENSATE BOTTOM DRAIN CONNECTIONUNITDRAIN PANCAULK AROUNDCONDENSATE COUPLINGOPEN VENTFIGURE 2Condensate DrainsMake drain connection to the 1" N.P.T. drain couplingprovided on unit.Note − The drain pan is made with a glass reinforcedengineered plastic capable of withstanding typical jointtorque but can be damaged with excessive force. Tightenpipe nipple hand tight and turn an additional quarter turn.A trap must be installed between drain connection and anopen vent for proper condensate removal. See figure 3 or4. It is sometimes acceptable to drain condensate ontothe roof or grade; however, a tee should be fitted to thetrap to direct condensate downward. The condensate linemust be vented. Check local codes concerningcondensate disposal. Refer to pages 2 and 3 forcondensate drain location.Units are shipped with the drain coupling facing the frontof the unit. Condensate can be drained from the back orbottom of the unit with the following modifications. Theunit can be installed in either downflow or horizontal airdischarge regardless of condensate drain location.Rear Drain Connection1− Remove heat access door. See figure 5.2− Remove filter access door.MOUNTINGFRAMEFILTERACCESS DOORMinimum Pitch1" (25 mm) per 10’(3 m) of lineFIGURE 4HEATACCESS DOORCONDENSATEDRAIN MULLIONFIGURE 53− Remove eight screws holding condensate drainmullion and remove mullion.Page 6
4− Lift front edge of the drain pan (to clear bottom drainplug) and slide drain pan out of unit. See figure 6.11− Use a field−provided 1" plug to seal side drainconnection.12− Replace the condensate drain mullion and reinstalleight screws.13− Reinstall access doors.BOTTOM CONDENSATE DRAINFIGURE 6DRAIN PANCAUTION: Be careful not todamage the coupling threadswhen drilling the hole.DRILL A PILOTHOLE IN CENTEROF COUPLING5− Make sure the cap over the unit bottom drain hole issecure.6− Rotate the drain pan until the downward slope istoward the back of the unit. Slide the drain pan backinto the unit. Be careful not to dislodge the cap overthe bottom drain hole.7− From the back side of the unit, pull the drain pancoupling through the rear condensate opening.8− Replace the condensate drain mullion and reinstalleight screws.9− Reinstall access doors.Bottom Drain Connection1− Remove heat access door. See figure 5.2− Remove filter access door.3− Remove eight screws holding condensate drainmullion and remove mullion.4− Lift front edge of the drain pan (to clear bottom drainplug) and slide drain pan out of unit. See figure 6.5− Turn the drain pan upside down and drill a pilot holethrough the bottom of the drain pan in the center of thecoupling. See figure 7.6− From the inside of the pan, use a Vari−Bit ® bit toenlarge the hole to 7/8". Do not damage couplingthreads.7− Remove the cap over the unit bottom drain hole.8− Slide the drain pan back into the unit.9− From the back side of the unit, pull the drain pancoupling through the rear condensate opening.10− From the front side of the unit, move the drain panuntil the bottom coupling settles into the unit bottomdrain opening. Once in place, check to make sure thecoupling is still positioned through the rearcondensate drain hole.Page 7After drilling the pilothole, drill a 7/8" hole fromthe inside of the pan.FIGURE 7Connect Gas Piping (Gas Units)Before connecting field−provided piping, check with gascompany or authorities having jurisdiction for local coderequirements. When installing gas supply piping, lengthof run from gas meter must be considered in determiningpipe size for 0.5" w.c. (.12kPa) maximum pressure drop.Do not use supply pipe smaller than unit gas connection.For natural gas units, operating pressure at the unit gasconnection must be a minimum of 4.7" w.c. (1.19kPa)and a maximum of 10.5" (2.60kPa) w.c. For LP/propanegas units, operating pressure at the unit gas connectionmust be a minimum of 11" w.c. (2.74kPa) and a maximumof 13.0" w.c. (3.23kPa).When making piping connections a drip leg should beinstalled on vertical pipe runs to serve as a trap forsediment or condensate. A 1/8" N.P.T. plugged tap islocated on gas valve for test gauge connection. Refer toHeating Start−Up section for tap location. Install a groundjoint union between the gas control manifold and the mainmanual shut−off valve. See figure 8 for gas supply pipingentering outside the unit. Figure 9 shows bottom gas entrypiping through the curb. Figure 10 shows bottom gasentry piping through the unit.Compounds used on threaded joints of gas piping shall beresistant to the action of liquified petroleum gases.
Page 2: KGA/KCA092, 102, 120, & 150 DIMENSI
Page 8 and 9: OUTSIDE OF UNIT GAS PIPE CONNECTION
Page 10 and 11: 24 VOLT FIELD WIRING WITH ELECTRONI
Page 12 and 13: LOCATION OF STATIC PRESSURE READING
Page 14 and 15: BLOWER DATA120 BELT DRIVE BLOWER
Page 16 and 17: BLOWER DATAFACTORY INSTALLED BELT D
Page 18 and 19: 6− If discharge pressure is high,
Page 20 and 21: 2− Combustion air pressure switch
Page 22 and 23: ServiceThe unit should be inspected
Page 24: Clean combustion air inducer as fol

K-Series (7.5-12.5 KGA) Installation Instructions - Allied Commercial

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