Central Boiler e-Classic 1450 IR Owner's Manual page 60

9. Low water - If the display on the controller indicates
, the system senses a low water condition.
Check the water level at the sight gauge and, if
necessary, add water according to the Water Quality
and Maintenance section. If adding water does not
correct the problem, contact your Central Boiler
dealer.
10. Low water temperature for too long a period of
time - The display on the controller will indicate
and the controller will shut down the furnace if
the water temperature has been too low for too long.
Determine the cause of the water temperature being
too low.
11. Alarm condition - Refer to FireStar Controller for
E-Classic Operating Instructions.
12. Chimney not drafting properly - Draft is the
force which moves air from the appliance up
through the chimney. The amount of draft in your
chimney depends on the length of the chimney, local
geography, nearby obstructions and other factors.
Draft occurs when the temperature in the chimney is
high enough to cause a negative pressure that "pulls"
the exhaust up and out the chimney.
Proper draft is necessary for the E-Classic to operate
optimally. Too much draft may cause excessive
temperatures in the appliance. Inadequate draft may
cause backpuffing and plugging of the chimney.
If poor draft is suspected, perform the following test:
with the outdoor furnace and chimney at normal
operating temperature, and with the bypass door
closed, loosen the chimney inspection cover and pull
it back about an inch (Fig. 77). If exhaust comes out
from around the cover, pressure in the chimney may
be incorrect and adding more chimney sections may
be required. However, due to many variables, even
if exhaust does not come out from around the cover,
the chimney might still not be drafting properly at
all times. Due to a number of variables, poor draft
can be an intermittent problem.
NOTE: A qualified installer may perform the
following test to check for proper draft. Before
performing the test, the outdoor furnace should
be completely cleaned to ensure nothing
obstructs exhaust flow through the system. Fire
the furnace and allow it to reach normal operating
temperature before performing the test.
• Drill a hole in the chimney inspection cover; then
with the outdoor furnace and chimney at normal
operating temperature, and with the bypass door
closed, use a manometer to check draft. If flue
draft exceeds -0.05 in. WC (-12.45 Pa) add more
chimney sections.
• After the test, fill the hole in the chimney inspection
cover with high-temp silicone.
58
Fig. 77
• If a spark arrestor is being used, make sure it is
clean and unobstructed.
• Objects like buildings and trees in close proximity
or nearby terrain (e.g., hills, valleys, etc.) can
adversely affect air flow in the chimney (see Fig.
78). Adding chimney sections may overcome these
factors.
Fig. 78
B. FIRE GOES OUT OR KEEPS GOING OUT
1. Wood moisture content is too high - Use properly
seasoned wood with a moisture content of about
25% or less.
2. Diameter of wood too large - Wood between 4" and
8" (10 and 20 cm) in diameter works well in most
cases. Larger diameter wood may need to be split.
3. Wood too tightly packed - Load the wood so that
the combustion air outlets on the sides of the firebox
do not become blocked or restricted.
Section 5 - Troubleshooting