Burnham LEDV SERIES manual Test Controls

i. Fitting leaks due to mis-flared tubing or damaged fitting.

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 find air leaks.

The following actions can eliminate air leaks:

i. Bleed pump as detailed in System Start-Up Section of this manual.

ii. Replace flare fittings.

iii. Replace oil supply line.

iv. Repair oil filter leaks.

v.Replace or repair tank fittings.

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 flue collar. Such air

leaks will cause a lower CO2 reading in the breeching. The smaller the firing rate the

greater effect an air leak can have on CO2 readings.

f.DIRT — A fuel filter 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 firing 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 flame and causes smoke and unburned fuel to pass out of the combustion chamber and clog the flueways 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 flame shape gets longer. An outside fuel tank that is above grade or has fuel lines in a shallow bury is

agood 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 settings must be increased at higher altitudes. Use instruments and set for 11.5 to 12.5% CO2.

j.START-UP NOISE — Late ignition is the cause of start-up noises. If it occurs recheck for electrode settings, flame shape, air or water in the fuel lines.

k.SHUT DOWN NOISE — If the flame 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 firing cycles for that air to be fully vented through the nozzle. Water in the fuel or poor flame shape can also cause shut down noises.

G. TEST CONTROLS

WARNING

Before installation of the boiler is considered complete, the operation of the boiler controls should be checked, particularly the primary control and high limit control.

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:

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