Carlin 102CRD-99FRD-100CRD - Manual (Page 22)

Model 99FRD, 100CRD & 102CRD oil burners — Instruction manual
Carlin part number MN99102 Rev. 10/21/10
– 22 –
5. Adjustment and verifi cation
Adjust burner using test instruments
1. Operate burner for 15 minutes before making fi nal adjustments using
test equipment.
2. Check for leaks in fuel piping.
Inspect fuel piping system for leaks. Repair any leaks to avoid
fi re hazard from oil leakage or combustion problems due to
air infi ltration into oil.
3. Inspect fl ame
• Look at fl ame through appliance combustion chamber observation
port. The fl ame should be well-defi ned and should not impinge on any
appliance surface. (If you make air changes later, inspect the fl ame
again.)
Do not attempt to confi rm combustion simply by inspecting
the fl ame 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.
1. Insert test probe into vent sample opening to sample fl ue products.
2. With the 99FRD, 100CRD, or 102CRD burner equipped with the cor-
rect oil nozzle, head setting and air band setting, the fl ue products will
usually contain between 11½% and 12½% CO
2
(5.9% and 3.8% O
2
)
and zero (Bacharach) smoke.
3. Use combustion test equipment to verify that burner is properly set up
for your installation, within the range listed in Table 3. 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.
a. Check smoke. It should be zero on the Bacharach scale.
b. Set the appliance fl ue damper or barometric draft regulator so the draft or
pressure in the vent complies with the appliance manufacturer’s instruc-
tions.
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 exfi ltration of harmful
combustion products. Failure to properly set draft for the
appliance could result in severe personal injury or death.
c. Check percent of CO
2
(or O
2
). Fine tune the burner, if necessary, by slightly
adjusting the head position for more or less air.
d. Recheck smoke (should be zero) and fl ue or chamber pressure/draft (adjust
if necessary and retest).
All installations should be checked after one to two weeks of
operation to ensure the appliance/burner units are operating
correctly.
Figure 20 Maximum fi ring rate decreases as overfi re
pressure increases
Firing against positive overfi re pressure
1. Burner rating maximum inputs are based on operation with zero to
slightly negative pressure overfi re, typically 0.01 to 0.03 inches w.c.
2. When a burner is applied to an appliance that operates with a higher
pressure overfi re, the maximum fi ring rate decreases because the
maximum available air fl ow from the burner blower decreases.
3. Read the graph below in Figure 20 to fi nd the maximum burner fi ring
rate at positive overfi re pressures.
Do not apply a 99FRD, 100CRD or 102CRD burner at a pres-
sure higher than listed in Figure 20 unless the application
has been factory pretested.