Harman P61A - Installation; Enting

8P 6 1 A P ellet S tove
3 -9 0 -0 5 8 2 2 R 2 8 _ 0 8 /1 3
V enting
V enting
A combustion blower is used to extract the combustion
gases from the rebox. This causes a negative pressure in
the rebox and a positive pressure in the venting system as
shown in ig. 7. The longer the vent pipe and more elbows
used in the system, the greater the ow resistance. Because
of these facts we recommend using as few elbows as possible
and 15 feet or less of vent pipe. The maximum horizontal
run should not exceed 8. If more than 15 feet of pipe is
needed, the interior diameter should be increased from  to
 because a larger pipe causes less ow resistance. Be sure
to use approved pellet vent pipe wall and ceiling pass-
tru ttn t  tru cmute a an
ceilings. All j oints for connector pipe must be fastened
with a minimum of three screws and a termination cap
must be installed. F ollow pellet vent manufacturer
instructions for properly securing each pellet vent j oint.
The pellet starting collar must be secured to the unit' s
ue car
NOTE: Simpson DuraV ent PelletV ent Pro Harman Adapter
Part # 3 PV P-ADHB and PelletV ent Pro Harman Adapter
Increaser Part # 3 PV P-X 4 ADHB are highly recommended
to be installed on the starter collar to insure a proper
pipe connection to the unit.
IMPOR TANT NOTICE
Approved  or  Pellet ent Pipe Such As, Type PL,
ust Be Used.
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F ig. 7
V ent Pipe
Pellet venting pipe (known as PL vent) is constructed of two
layers with air space between the layers. This air space acts
as an insulator and reduces the outside surface temperature
to allow a clearance to combustibles of 1 to  inches. The
sections of pipe lock together to form an air tight seal in
most cases. However, in some cases a perfect seal is not
achieved. or this reason and the fact that the unit operates
with a positive vent pressure we specify that the j oints
also be sealed with high temp (R TV ) silicone. Aluminum
tape can also be used for any oint that is 1ft. or more from
the outlet of the stove.
Avoiding Smoke and Odors
Negative Pressure, Shut-down, and Power F ailure:
To reduce the probability of back-drafting or burn-back in
the pellet burning appliance during power failure or shut-
down conditions, the stove must be able to draft naturally
without exhaust blower operation. Negative pressure in the
house will resist this natural draft if not accounted for in the
pellet appliance installation.
Heat rises in the house and leaks out at upper levels. This
air must be replaced with cold air from outdoors, which ows
into lower levels of the house. ents and chimneys into
basements and lower levels of the house can become the
conduit for air supply, and reverse under these conditions.
Outside Air:
Hearth & Home Technologies strongly recommends
attaching outside air in all installations, especially lower
ee an man r catn
A CHIMNEY CONNECTOR MAY NOT PASS THR OUG H
AN ATTIC OR R OOF SPACE, CLOSET OR SIMILAR
CONCEALED SPACE, F LOOR , OR CEILING . R EF ER ENCE
LOCAL BUILDING CODES F OR DETAILS.
INSTALL V ENT AT CLEAR ANCES SPECIF IED BY THE
V ENT MANUF ACTUR ER
\ DO NOT INSTALL A F LUE DAMPER IN THE EX HAUST
V ENTING SY STEM OF THIS UNIT.
DO NOT CONNECT THIS UNIT TO A CHIMNEY F LUE
SER V ING ANOTHER APPLIANCE
CAUTION
DO NOT USE MAK ESHIF T COMPR OMISES W HEN
INSTALLING THIS APPLIANCE. DAMAG E AND/ OR
INJ UR Y MAY R ESULT.
= Positive Static Pressure
= Negative Static Pressure
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