24
ii
. Fuel line leak due to crushed or bent tubing.
iii.
Filter connection leaks.
iv
. Tank connection leaks.
There are various test kits available to trace
air leaks, such as electronic sight glasses.
Follow the manufacturers' instructions to
fi nd air leaks.
The following actions can eliminate air leaks:
i
.
Bleed pump as detailed in System Start-Up
Section of this manual.
ii
. Replace
fl are fi ttings.
iii
. Replace oil supply line.
iv
. Repair
oil
fi lter leaks.
v.
Replace or repair tank fi ttings.
e. GASKET LEAKS — If 11.5 to 12.5% CO
2
with a #1 smoke cannot be obtained in the
breeching, look for air leaks around the fl ue
collar. Such air leaks will cause a lower CO
2
reading in the breeching. The smaller the fi ring
rate the greater effect an air leak can have on
CO
2
readings.
f. DIRT —
A
fuel fi lter is a good investment.
Accidental accumulation of dirt in the fuel
system can clog the nozzle or nozzle strainer and
produce a poor spray pattern from the nozzle.
The smaller the fi ring rate, the smaller the slots
become in the nozzle and the more prone to
plugging it becomes with the same amount of
dirt.
g. WATER — Water in the fuel in large amounts
will stall the fuel pump. Water in the fuel in
smaller amounts will cause excessive wear on
the pump, but more importantly water doesn’t
burn. It chills the fl ame and causes smoke and
unburned fuel to pass out of the combustion
chamber and clog the fl ueways of the boiler.
h. COLD OIL — If the oil temperature
approaching the fuel pump is 40°F or lower poor
combustion or delayed ignition may result. Cold
oil is harder to atomize at the nozzle. Thus, the
spray droplets get larger and the fl ame shape gets
longer. An outside fuel tank that is above grade
or has fuel lines in a shallow bury is a good
candidate for cold oil. The best solution is to
bury the tank and lines deep enough to keep the
oil above 40°F.
i. HIGH ALTITUDE INSTALLATIONS
— Air openings must be increased at higher
altitudes. Use instruments and set for 11.5 to
12.5% CO
2
.
j. START-UP
NOISE
—
Late ignition is the
cause of start-up noises. If it occurs recheck for
electrode settings, fl ame shape, air or water in
the fuel lines.
k. SHUT DOWN NOISE — If the fl ame runs
out of air before it runs out of fuel, an after burn
with noise may occur. That may be the result
of a faulty cut-off valve in the fuel pump, or it
may be air trapped in the nozzle line. It may take
several fi ring cycles for that air to be fully vented
through the nozzle. Water in the fuel or poor
fl ame shape can also cause shut down noises.
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1. CHECK THERMOSTAT OPERATION. Raise
and lower thermostat setting as required to start and
stop burner.
2. VERIFY PRIMARY CONTROL SAFETY
FEATURES using procedures outlined in
Instructions furnished with control (See back of
Control Cover) or Instructions as follows:
Содержание microTEKDV
Страница 14: ...14 Figure 10 Vent Installation Figure 11 Vent Connector Un Assembled ...
Страница 15: ...15 Figure 13 Air Intake Installation Figure 12 Vent Connector Assembled ...
Страница 19: ...19 Figure 15 Schematic Wiring Diagram ...
Страница 30: ...30 Figure 20 microTEKDV Boiler Jacket Insulation ...
Страница 31: ...31 Figure 21 microTEKDV Bare Boiler Assembly ...
Страница 32: ...32 Figure 22 Vent Kit Repair Parts ...
