50
Section 9 - Routine Maintenance
7. Do not exceed treatment of higher than 30 drops
by the nitrite test. If the test requires more than 30
drops, dilute the water by draining water from the
system until the LED display flashes
. Then
add fresh water until the water level indicator rod is
above the vent cap (Fig. 55). Start the pump(s) and
circulate water for 24 hours. Recheck nitrite levels.
8. After the proper nitrite level has been obtained,
check pH to make sure it is between 8 and 9.5.
After initial treatment, the maintenance nitrite level
target is 15 drops by nitrite test, but 15 to 30 drops is
acceptable. One drop of permanganate reagent equals
approximately 100 ppm.
System Maintenance
The pH and nitrite levels of the water, once treated,
should remain stable as long as water is not added to
the outdoor furnace. If water is added to the outdoor
furnace and/or system, the system water should be
tested and Corrosion Inhibitor Plus™ should be added
(if necessary) to maintain the recommended level of
protection.
NOTE: If there is a leak in the system or if the
outdoor furnace loses water from boiling
frequently, the problem should be identified and
repaired immediately. Under normal operation,
little or no water needs to be added. Adding water
to the outdoor furnace may cause corrosion if
not immediately treated with Corrosion Inhibitor
Plus™ to the proper pH and nitrite levels. In
addition, the amount of dissolved solids in the
system (due to adding additional water) can
cause problems.
After the initial three months of operation and every
six months thereafter, the pH and nitrite levels of the
system water should be tested. These levels should be
maintained as previously stated.
POST HEATING SEASON MAINTENANCE
The water should be left in the outdoor furnace
during the non-heating season. Check pH and nitrite
levels as described in the Water Quality and Maintenance
section; add Corrosion Inhibitor Plus™ (p/n 1650) as
needed. If Corrosion Inhibitor Plus™ is added, run the
circulation pump for two days to thoroughly mix in the
new corrosion inhibitor. If water is added, bring the
water up to operating temperature as soon as possible.
If water is added more frequently than once during the
heating season, a complete inspection of the outdoor
furnace and plumbing should be performed.
1. At the end of the heating season, clean all of the fuel
from the hopper. Clean the fuel from the augers by
pressing the Auger button until no fuel enters the
burn chamber.
2. Remove the aerator and burn chamber; inspect and
clean as explained in section 9.7 Aerator and Burn
Chamber.
3. Clean all the ash out of the outdoor furnace. Scrape
the walls and floor of the firebox.
4. Check the chimney box and flues. Clean out any
excessive buildup. Any large or dry crusty deposits
on the walls or heat exchanger area should be
removed. When cleaning the firebox, be sure to wear
the appropriate personal protective gear.
CAUTION
To minimize corrosion caused by accumulated
ash, it is especially important to clean the
chimney, chimney box and flues at the end of the
heating season.
5. When the outdoor furnace is clean, carefully inspect
the firebox for any signs of excessive corrosion
or deterioration. If any corrosion or deterioration
is found, call your dealer. It is always better to do
maintenance during the non-heating season.
6. After the inspection is completed, apply a thin coat
of new motor oil to the firebox and heat exchanger
being sure to work oil into all corners.
7. Inspect the thermal valve as explained in section 9.9
Thermal Valve.
8. Place a cover over the chimney to keep rain from
entering the outdoor furnace.
9. If the water is left in the outdoor furnace during
the non-heating season, condensation can occur
in the firebox. Periodically during the non-heating
season, check for condensation in the firebox. To
prevent condensation in the firebox, one option is
to keep a 60W light bulb on in the firebox during
the non-heating season. Another option is to keep a
circulating pump running.
