2018PC-03/03
7
FLUEWAY
ThestoverequiresaCElistedpelletvent.SotheventingsystemshallbeapprovedforpelletstovesbyacertifiedtestingLaboratory.
PL Vent must be used for venting all Freestanding stoves.
Do not use to vent pellet appliance these venting materials and products:
-
Dryervent
-
Gasappliance(TypeB) vent
-
PVC(plastic)pipe
-
Single wall stovepipe.
The pellet stove is not the same as other stoves. It has a forced draught of flue gas by a fan, which keeps the firebox in a vacuum
and the entire flueway slightly pressurize. For this reason the flue must be completely airtight and correctly installed to ensure both
trouble-free operation and user safety.
•
The flueway
must be made
by specialized personnel or firms, as outlined below.
•
Thefluemustbeinstalledinsuchawayastoguaranteethatperiodiccleaningcanbecarriedoutwithoutdismantlinganypartswhatsoever.
•
Pipes should
always
be sealed with silicone (
not cement-based sealants
) or specially adapted gaskets/seals, which retain their strength and
elasticityathightemperatures(>450°F/230°C),andshouldbefixedwithatleastthreesheetmetalscrews.
Using the relative pipe clips, fix the flue to the wall so that it does not weigh on the smoke fan.
DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST VENTING SYSTEM OF THIS UNIT.
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE.
Do not connect to a flueway into which extractor hoods discharge vapours.
The very hot exhaust gases may cause skin burns: keep a considerable distance away from the appliance.
Theexhaustgasesfromthecombustionofpelletsfuelmaydirtytheoutsideofthewalls.Toavoidsuchpossibilityterminatethevent
above the roofline.
Pipes and maximum usable lengths
The exhaust pipe on all stoves is 3” (76 mm) O.D. so the stove was designed to accommodate a 3” stove pipe adaptor but the diameters of the pipes
dependsonthetypeofinstallation.Yourinstallationmayrequiretheuseof4”ventasshowninTable1.
TABLE 1: CONNECTION TO FLUE PIPE - PIPE LENGTH
TYPE OF INSTALLATION
WITH 3” DIAMETER PIPE
WITH DOUBLE-WALLED 4”
DIAMETER PIPE
Maximum length (with three 90° elbows)
25’
35’
For installations more than 4000’ (1200 m) above sea level
-
Required
Maximum number of elbows
3
4
Length of horizontal sections with minimum 3% gradient
10’
10’
Losses in pressure associated with a 90° elbow can be compared to those incurred by three feet of pipe.An inspectable union-tee
can be considered equivalent to a 90° bend.
EXAMPLE:
if installing a section greater than 20’ in length with 3” diameter pipe, calculate the maximum usable length in the following ways:
•
Ifamaximumof
three90°elbows
areused,themaximumlengthofthesectionwillbe
25’
.
•
Ifamaximumof
two 90°elbows
areusedandbearinginmindthata90°bendcanbereplacedby3’ofpipe,themaximumlengthofthesection
willbe
25’+3’ = 28’
.
•
Ifamaximumof
one 90° elbows
isusedandbearinginmindthata90°bendcanbereplacedbyonemeterof pipe,themaximum lengthofthe
sectionwillbe
25’+3’+3’=31’
.
