Solo Plus Instructions 1-800-782-9927 Version 12-13
Tarm Biomass · 4 Britton Lane · Lyme, NH 03768
4.16.2 Smoke Box and Heat Exchange Tube Cleaning
The smoke box, the flue outlet and the heat exchange tube areas should be cleaned twice a month with
the boiler brush. Let the boiler cool and shut off the power to the boiler. First, remove the top cover.
Next, remove the four wing nuts to the clean-out cover and remove. If you have turbulators, remove
from the heat exchange tubes. Insert the brush into each heat exchanger pipe and work back and forth
thoroughly. Push the brush all the way through, but be careful not to damage the bottom plate under-
neath. Remove fly-ash from the smoke box area above the heat exchange tubes. Ash that falls down
to the bottom of the heat exchanger tubes during cleaning can be removed though the ash door as de-
scribed above. When finished, replace the clean-out cover and the top cover.
4.16.3 Cleaning the Draft Fan
The draft fan
(Fig. 4.7)
must be inspected
yearly
and cleaned as necessary. Dust and ash buildup on
the fan blades can significantly reduce fan performance.
Remove the screen by removing the four screws
(Fig. 4.7).
Clean the blades with a soft bristle brush
(paint brush) and a vacuum cleaner. If there is creosote on the fan you may have a chimney draft prob-
lem that needs to be fixed.
Boiler Operation, Maintenance, and Service > Smoke Box and Heat Exchange Tube Cleaning
Page 45
Fig. 4.6
Smoke Box and Heat Exchangers
Heat Exchangers
Lo-Limit Sensor Well
By-Pass Damper
NOTE
Clean heat exchanger tubes and smoke box mean better heat transfer from the flue gas to the
water and thus better operating economy.
NOTE
Elevated flue gas temperatures above 600 ºF (315 ºC) may indicate the need to brush the heat
exchange tubes.
Fig. 4.7
Draft Fan
