Draft Test Procedure - Harman Super-Magnum Owner's Manual

Super-Magnum Coal Stoker Stove
E. Draft Test Procedure
Because of the dangers associated with coal gases and
the potential for carbon monoxide release, It is important to
balance the airflow into the stove with the draft in the flue.
The combustion blower has a restrictor plate attached to it,
which must be adjusted upon completion of the installation.
The barometric damper, if installed, must also be set to
prevent over-drafting in the appliance. Follow these steps to
ensure safe and efficient operation of your Super Magnum
coal stoker stove.
You will need to start a fire in the appliance to establish
a draft in the chimney flue. Refer back to these
instructions after reading the entire manual.
• Drill a hole into the flue connector pipe, for the purpose
of attaching a draft meter. This hole should be between
the barometric damper and the stove's flue collar, and in
an inconspicuous location, as it will be closed off after
the test with a bolt.
• Attach the draft meter to the hole in the connector. A great
chimney will have draft without a fire or heat source. Set
the barometric damper to maintain -.06 to -.08 (inches of
water column).
• Remove the draft meter from the connector pipe and seal
the hole by threading in a screw or bolt. You may also
want to apply a small dab of high-temperature silicone to
the threads prior to installing.
• Next, remove the set-screw plug bolt from the front of the
Super Magnum body. This plug is located in the center,
just below the top load door. Attach the draft meter hose
to the stove.
• Turn the feed adjuster knob to "Test". This will run the
combustion blower at its highest possible voltage or
speed.
• Close the restrictor over the opening to the combustion
blower until the draft reading in the firebox fits the -.03 to
-.04 range. This will ensure that the combustion blower
will never push more air into the firebox than the draft in
the flue is capable of removing.
• Disconnect the draft meter from the stove and re-install
the set screw plug bolt.
14 Do Not Burn Wet Coal!
!
WARNING
Do not operate if the draft in the flue
exceeds -.08 in water column.
Draft meter
connection
locations
3-90-02702R6_03/13