Heat Exchanger Tubes; Soot And Fly-Ash Formation And Need For Removal - Bixby Energy MaxFire Installation & Operating Manual

The ash drawer should be checked / emptied after burning
approximately 100-200 lbs. (1 - 2 full hoppers) of fuel. Actual
frequency will vary with usage, check every few days.
Ashes should be placed in a metal container with a tight-
fitting lid. The closed container of ashes should be placed on
a non-combustible floor or on the ground, well away from all
combustible materials, pending final disposal. If the ashes are
disposed of by burial in soil or otherwise locally dispersed, they
should be retained in the closed container until all cinders have
been thoroughly cooled.

HEAT EXCHANGER TUBES

Fly ash and other deposits will accumulate on the Heat Exchanger
Tubes over time and will act to insulate the tubes, reducing their
ability to heat the convection air and thus the home or building.
There are two banks of Heat Exchanger Tubes, both of which are
equipped with a cleaning lever. The levers are located above the
back ceramic pannels. To clean the tubes, pull the right side lever
straight up approximately 1'' (2 cm). Carefully remove the back
panel. Repeat for the left side. Once the back panels have been
removed, slide the levers up and down untill they move freely.
Vaccum out the base of the Heat Exchanger Tubes and the
firebox. See Figure 29.
To replace the back panels, lift the left lever straight up slide the
left panel underneath. Repeat for the right hand side. See Figure
30.
SOOT AND FLY-ASH FORMATION AND NEED
FOR REMOVAL
The products of combustion will contain small particles of fly
ash. The fly ash will collect in the exhaust venting system and
restrict the flow of the flue gases. Incomplete combustion, such
as occurs during start-up, shutdown or incorrect operation of
the heater will lead to soot formation which will collect in the
exhaust venting system. Inspect the exhaust venting system at
least yearly, cleaning as required. Also, inspect any exhaust
outlet to maintain a clear and unobstructed exhaust/intake port.
CAUTION: Use only an approved ash vacuum for this pur-
pose.
2020866 REV A
Ash Drawer
Figure 28
Figure 29
Figure 30
Cleaning levers
Back Panel
25