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Owner’s Manual - Page 3

For 4031350.

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3.3 Air Ducting
3.3A Inlet Ducting
Occasionallytheareatobelteredisdifculttoaccessand/
ortheunitcannotbelocatedinthearea.Insuchcases,the
aircanbeductedtotheunit’sinlet.
Around16”diameterexibleductcanbeattachedtothe
unitinlet.Itconnectsbyplacingthewireintheductoverthe
ductcollarlipatonelocationandworkingoveritoverthelip
gradually.Itmayberemovedafteruseforeasiertransport
and storage. Flexible 16” duct is available from Therma-Stor
LLC.(4028357)
3.3B Outlet Ducting
A detachable trapazoid shaped exhaust ring is supplied that
willallow10”roundlay-atplasticducttobeattachedto
thePhoenixGuardianRHEPASystemoutlet.Lay-atplastic
ductingisavailablefromTherma-StorLLC.(4024935)
To attach ducting to the collar, remove the ring from the unit
by pressing release tab at the top of the grill. Put the plastic
duct end through the inside of the ring. Roll the duct end
outwardsothatitover-lapstheoutsideofthering.Clipthe
ring back onto the exhaust grill.
3.3C Negative Air Ducting
ThePhoenixGuardianRHEPASystemcanbeusedtolter
and exhaust air from a space. When exhausting to outside
thespace,thespacewillbeunderaslightnegativepressure.
Thiswillhelppreventairborneparticlesfromleavingthe
space,becausethenegativepressurewilldrawairinthrough
openingsinthespace’sexteriorsurfaces.
CAUTION: Exhausting too much air from a space with open
combustion devices (e.g. furnace, fireplace or water heater)
can cause those devices to backdraft. This can contaminate
the space with potentially fatal gases.
Insuchcases,thePhoenixGuardianRHEPASystemmustbe
usedinoneofthefollowingthreeways:
A. Asalteringunitonly.Exhaustingnoairfromthe
space and thus causing no negative pressure or
backdrafting.
B. Exhaustingaverylimitedamountofairwhichdoesnot
causebackdrafting.IncaseB,theopencombustion
devices must be thoroughly checked to guarantee that
theydonotbackdraftwhilethePhoenixGuardianRHEPA
System is running.
C. DirecttheoutletductfromtheGuardianRHEPASystem
totheroomwiththeopencombustiondevice(s).Thiswill
positivelypressurizetheroomwithHEPAlteredair,thus
preventing backdrafting. As in case B, those combustion
devices must be checked after the GuardianR HEPA
System is running to guarantee that they are not
backdrafting.
3.4 Power/Speed Control
Thepower/speedswitchislocatedonthecontrolpanel.
Whenturnedontoanyspeed,itpowerstheimpellerfan.
Occasionallytheimpellerfanmaynotstartonlowspeed.If
this occurs, rotate the speed control to high speed until the
impellerfanstarts,thenadjustittoalowerspeed.
CAUTION: Do not remove HEPA filter with the unit on.
Removing the top and filters while running will expose the
dangerous rotating impeller fan. Disconnect the appliance
before changing filters.
1 2
3 4
To remove ducting
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