LAARS Multi Flue CF-100-3 - Install and Operating Manual - Manual (Page 14)

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T’stat information continued-
B. Using Instruments To Set Fire: It is strongly suggested that the
installer use combustion test instruments when adjusting a flame. We
suggest 9 1/2% to 11% CO2 with a smoke reading no darker than 1
on the Bachrach Scale. Adjust the air inlet on the burner for the
minimum amount of air for clean combustion while the combustion
chamber is hot. Adjust the draft regulator so that there is -.01" to -
.04" draft over the fire, maximum. Take readings and adjust air so
that a minimum of 9 1/2% CO2 is obtained with a smoke reading
between 0 and 1. When using instruments in setting a fire, do not
lean towards getting a greater percentage of CO2 than a clean fire
will give. It is more important to keep the inside of the combustion
system clean than to receive a higher CO2.
C. Nozzle (Oil Input) Variations: Oil service personnel will carry
several nozzles of different manufacture, angles and types of spray
in order to obtain the most suitable for the particular application. Fuel
oils vary greatly. Because of this, nozzles will not always deliver the
gallons per hour or angle of spray that is indicated on the nozzle. In
addition, it has been found that, in certain areas, due to local
conditions, nozzles other than those furnished as original equipment,
give better performance due to the type of oil being delivered.
D. Draft: Draft reading in the stack should be -.02" to -.05". High Draft
may be caused by over firing or too much excess air.
If there is back draft caused by down draft, DO NOT operate the burner until
this situation is corrected. Back pressure (back draft or down draft) may also
be caused by the chimney termination being lower in elevation than
surrounding objects, such as buildings, hills, trees, rooftops, etc. Back
pressure may also be caused by an exhaust fan in the building.
IMPORTANT REMINDERS
1. Install all electrical work in strict accordance with local codes and
ordinances.
2. All unions must be of the ground seat type.
3. A check valve shall be installed in the suction line when the oil storage tank
is below the burner to prevent the return of the oil to the oil storage tank
when the fuel unit is not in operation.
4. Lubricate oil burner motor.
5. Set the draft to a range of -.02" to -.05".
6. See that the smoke pipe enters into the chimney far enough to be tight and
not so far as to reduce flue area. Its end should be flush with the inside of
the chimney.
7. Be sure that there is at least -.01" draft over the fire.
8. Be sure that there is no backpressure such as down draft or back draft.
9. Be sure that there is sufficient air in heater room for proper combustion at
all times.
10. Explain the operation of the burner to the owner -show where to oil -how
to operate controls and main cutout switch.
11. Hang burner-operating instructions as supplied with burner in prominent
place near installation.