Carlin EZ-1/2/3 - Manual (Page 22)

Carlin part number MNEZ123 Rev. 07/13/11
– 22 –
Model EZ-1/2/3 oil burners — Instruction manual
5. Adjustment and verification
Perform combustion test
COMBUSTION MUST BE VERIFIED WITH THE
(OPTIONAL) BURNER COVER IN PLACE —
Remove the burner cover if installed. Set up and adjust the
burner using the following procedure. Replace the burner
cover, allow the burner/appliance to run at least 15 minutes,
then check combustion again. Readjust the burner is neces-
sary.
The CO
2
will increase when the cover is put on,
particularly if combustion air is piped to the burner.
If air is ducted to an (optional) air adapter,
combustion must be set based on the air inlet
temperature. Air temperature variations will change how
much air enters the burner, so the combustion must be set
to anticipate the variations. Follow the guidelines below.
Adjust burner using test instruments
1. Operate burner for 15 minutes before making final adjustments using
test equipment.
2. Check for leaks in fuel piping.
Inspect fuel piping system for leaks. Repair any leaks to avoid
fire hazard from oil leakage or combustion problems due to
air infiltration into oil.
3. Inspect flame
• Look at flame through appliance combustion chamber observation
port. The flame should be well-defined and should not impinge on
any appliance surface. (If you make air or gas pressure changes later,
inspect the flame again.)
Do not attempt to confirm combustion simply by inspecting
the flame visually. You must use combustion test instruments.
Failure to properly verify/adjust combustion could allow unsafe
operation of the burner, resulting in severe personal injury,
death or substantial property damage.
4. Insert test probe into vent or appliance flue damper sample opening
to sample flue products.
Heating units designed for natural draft operation are normally
set for a slightly negative pressure, usually –0.01 to –0.02
inches w.c. draft at the combustion chamber test port. Ap-
pliances designed for forced draft (positive pressure in the
chamber) must be air-tight to prevent exfiltration of harmful
combustion products. Failure to properly set draft for the
appliance could result in severe personal injury or death.
5. Use combustion test equipment to verify that the burner is properly set
up for your installation. Appliances with positive pressure in the chamber
may require a wider air opening. See appliance instructions for details.
Verify/adjust settings by testing with instruments.
• With the EZ burner equipped with the correct positioning bar, oil nozzle and
initial air band setting, the flue products will usually contain between 11½%
and 12½% CO2 (5.9% and 3.8% O2) and zero (Bacharach) smoke. (Based
on air inlet temperature of 70°F — see Table 5 for the proper values at
other air temperatures for burners with ducted combustion air.)
• Depending on length of air piping (when used) and on air temperature, CO
2
may change one per cent or more with the cover in place.
• Check smoke. It should be zero on the Bacharach scale.
• Set the appliance flue damper or barometric draft regulator so the draft
or pressure in the vent complies with the appliance manufacturer’s
instructions.
Re-install (optional) burner cover and check
combustion again
1. Allow the burner to operate with the cover on for at least 15 minutes.
(Insert a temperature probe to measure incoming combustion air tem-
peature if combustion air is ducted to the burner.)
• Retest CO
2
(or O
2
) and smoke again. The values will change when the cover
is installed. Depending on length of air piping and on air temperature, CO
2
may change one per cent or more with the cover in place.
• Make sure the CO
2
(or O
2
) values are in the range given in Table 5 for the
inlet air temperature measured. IF NOT, remove the cover and adjust the
air band more open to decrease CO
2
(increase O
2
) or close the air band
slightly to increase CO
2
(decrease O
2
).
• Tighten air band clamping screw.
All installations should be checked after one to two weeks of
operation to ensure the appliance/burner units are operating
correctly.
Table 5 Burners using inside air for combustion —
Use “65°F or higher” row in table below.
Burners with ducted combustion air —
MEASURE incoming combustion air temperature
and set the CO
2
(or O
2
)using the following chart:
Incoming
combustion air
temperature
during setup
CO
2
Max and O
2
Min @ setup
No. 2 Fuel oil combustion
CO
2
min CO
2
max O
2
max O
2
min
–20 °F to 0°F 9.6 10.6 7.8 6.4
5 °F to 30 °F 10.3 11.3 6.8 5.5
35 °F to 60 °F 10.8 11.8 6.2 4.8
65 °F or higher 11.5% 12.5 % 5.2% 3.9 %