20
InstallatIon of vent sYsteM
Beforebeginninginstallationofpipingsystemthoroughlyread
thesectionofthismanualVENTPIPEPREPARATION.
Ifyouare installing your system so that it vents through roof,
pleasereferto section  titled INSTALLATION OF VERTICAL
VENT SYSTEM.
vent terMInal InstallatIon, sIdewall
1.Installtheventterminalbyusingthecoverplateasatemplate
tomarktheholefor theventpipetopass throughthewall.
BEWARE OF CONCEALED WIRING AND PIPING INSIDE
THE WALL.
2.If theVent Terminalis beinginstalled on theoutside ofa
finishedwall,itmaybe easiertomarkboth theinsideand
outsidewall.Aligntheholes bydrillingahole throughthe
centerofthetemplatefromtheinsidethroughtotheoutside.
Thetemplatecannowbepositionedontheoutsidewallusing
thedrilledholeasacenteringpointforthetemplate.
3.A)MASONRYSIDEWALLS
 Chiselanopeningapproximatelyonehalfinch(1.3cm)larger
thanthemarkedcircle.
 B)WOODENSIDEWALLS
 Drillapilotholeapproximatelyonequarterinch(0.64cm)outside
ofthemarkedcircle.Thispilotholeisusedasastartingpoint
forasaws-all orsabresaw blade.Cut aroundthemarked
circlestayingapproximatelyonequarterinch(0.64cm)outside
oftheline. (Thiswillallow thevent toeasilyslide through
theopening.The resulting gap will be covered up by the
VentTerminalcoverplate.)Repeatthissteponinsidewallif
necessary.
SEQUENCE OF INSTALLATIONS, FIGURE 18A
CutalengthofPVCpipeabout3.5inches(8.9cm)l ongerth anthe
wallthicknessat theopening. Gluethevent terminaltothis
sectionofpipe.Slid ethewallplateoverth epipetostopagainst
theventterminal.Placeabeadofcaulking(notsupplied)around
thegapbetween thepipeand coverplate. Applyenough to
fillsomeofthegapbetweenthepipeand wall.Placesomeof
thecaulkingonthebackoftheplatetoholditagainstthewall
afterinstallation.Iftheventpipeisinstalleduptothewall,with
acouplingontheend againstthewallopening, thepipewith
theventterminal canbeprepared forgluing beforeinserting
throughthewall.  Slide the pipe through the wall and insert
intothecouplingontheothersideofthewall,makingsurethat
theventterminalends uppointedinthe correctposition,see
Figure18A.
VENT TERMINATION - FIGURE 18A.
dIrect ventInG
Theairintakeprovidedontheunitcontainsameshscreentoprevent
largeparticlesfromenteringtheunit.
FIGURE 18B.
WHEN THE UNIT IS TO BE SETUP AS A DIRECT VENT, THE
MESH SCREEN MUST BE REMOVED. THE INLET VENT PIPE
MAYTHENBEGLUEDTOTHEAIRINTAKE(SeeFigure18B)
PROVIDED ON THE UNIT. THE SCREEN REMOVED FROM THE
INTAKENEEDSTOBEINSERTEDINTOTHE2”-22.5DEGREE
VENT TERMINAL SUPPLIED IN THE VENT TERMINAL KIT.
dIrect vent terMInal InstallatIon IMportant
THIS UNIT CONSISTS OF TWO VENT TERMINALS - AN INTAKE
VENT TERMINAL AND AN EXHAUST VENT TERMINAL. THE INTAKE
VENTTERMINALISA2”22.5°PVCELBOW(-)WITHAMESHWIRE
SCREENANDTHEEXHAUSTVENTTERMINALISA2”22.5°PVC
ELBOW WITH A MESH WIRE SCREEN.
NOTE: TO PREVENT EXHAUSTING PRODUCTS FROM
CIRCULATINGTOTHEAIR INTAKE IN WINDY/COLDAREAS,
THE MAXIMUM PRACTICAL DISTANCE BETWEEN THESE TWO
TERMINALS IS RECOMMENDED.
FIGURE 18C.
WHEN LOCATING THE TERMINALS ON A SIDEWALL, THE
FOLLOWING SPECIFICATIONS PERTAINING TO TERMINAL
LOCATION MUST BE FOLLOWED.
1.Theintakeairterminalandtheexhaustventterminalmustterminate
onthesameexterior wallandmustbe separatedbya minimumof
24”(61cm)onverticalcenterline(seeFigure18C).Incolderclimates
increasingthe24” (61cm) minimum will reduce possibility of frost
overfromsidewindsblowingexhaustvaporsto theairintakeofthe
direct vent.
2.Thehorizontalcenterlineoftheintakeairterminalmaynotbelocated
lowerthanthehorizontalcenterlineoftheexhaustventterminal(see
Figure18C).