Specifications

30259-0-0212 Page 11
VENTING REQUIREMENTS
WARNING
This replace must not be vented with any other appliances,
even if that appliance is of the condensing type. Common
venting can result in severe corrosion of other appliances
or their venting and can allow combustion gases to escape
through such appliances or vents. Do not vent the replace
into a replace chimney or building chase.
WARNING
Upon completion of the installation, carefully inspect the en-
tire ue system to assure it is properly sealed. DO NOT use
any vent material other than what is specied in this manual.
Leaks in the ue system can result in serious personal injury
or death due to exposure of ue products, including carbon
monoxide.
TheMantis is classied asa“Category IV” appliance,whichre-
quires special venting materials and installation procedures. In-
stallationscanbeConventional(1-pipe)andDirectVent(2-pipe).
Ventingmustbecompletedwith1-1/2inchdiameterpipe.Inse-
lecting a location for installation,it isnecessary to provide ade-
quateclearancesforservicingandproperinstallation.
Allventandcombustion airpipesandttings mustbeSchedule
40PVCandmeettheANSI/ASTMStandardD1785.Cementmust
conformtoASTMStandardD2564.
Maximum Vent Length is 40 feet with (3) 90° elbows. The
minimum vent length is 12 inches.Each90°elbowusedin
theventsystemwillbetheequivalentto3feet,andeach45°
elbowisequivalentto1.5 feet,which shouldbe addedtothe
overall vent length. See Table 1.
It is recommended that the Mantis Power-Vent High-Efciency
Fireplacebelocatedonanexteriorwallforeaseofventing.The
ueexhaustpipeandinletairpipeshouldbelocatedbetweenwall
studs.Therequiredopeningforventingis1-7/8inchindiameter
for1-1/2inchPVCpipe.
Theminimumdistancefromthecenteroftheventcaptothenear-
estoutsidecornerorobstructionis12inches.Theueoutletmust
beatleast12inchesfromanyopeningwhichuegasescoulden-
terthebuilding.SeeFigure1.Theueoutletmustbeaminimum
distanceof6feetfromanypressureregulator.
Thebottomoftheexhaustventterminal andthe airintake shall
be located at least12 inches above gradeand must be vented
outside.Itisrecommendedtheexhaustandintakebelocated12
inches from the maximum snow level.
Theuepipemustbesupportedonhorizontalventruns.Theue
pipeneedstobesupportedevery3feet.Allhorizontalrunsofthe
uemustbepitched¼inchperfooteithertowardsthereplaceor
awayfromthereplace.
Note: Iftheventrundipsorsags,condensationmaybecome
trappedandcausetheunittonotoperateproperly.
The minimum vent length protruding from outside the wall is 6
inches.Fortwo-pipeinstallation,aminimumdistanceof3inches
andmaximumdistanceof24inchesmustbemaintainedbetween
thepipes.SeeFigures2and3.
Single ue (one-pipe) installations must have a minimum clear-
anceof2inchesonthebackofthereplaceforcombustionair.
Note: If vent length requirements are not followed, the unit
will not operate properly.
Figure 3 - Colinear Direct Vent
Table 1 - Equivalent Vent Length Example
EVL=EquivalentVentLength
EVLmustbegreaterthanorequalto1’andlessthanorequalto40’
EVL = 90ºelbow + 4’straightpipe + 45ºelbow + 2’straightpipe + 45ºelbow + 3’straightpipe = 15’
EVL = 3’
(90ºelbow)
+ 4’
(straightpipe)
+ 1.5’
(45ºelbow)
+ 2’
(straightpipe)
+ 1.5’
(45ºelbow)
+ 3’
(straightpipe)
= 15’
12” MIN TO GRADE.
(RECOMMENDED 12” MIN
TO MAX EXPECTED SNOW LEVEL)
6” Min
12” MIN TO GRADE.
(RECOMMENDED 12” MIN
TO MAX EXPECTED SNOW LEVEL)
TYPICAL BOTH PIPES
9” Min
3” Min
24” Max
EXHAUST
INLET
6” Min
Figure 2 - Single Flue