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4. Adjust the burner as needed for a CO
2
reading of:
a) Oil burners: CO
2
approximately 12.5% or 1%
less than the level at which the smoke reading
goes above a trace on the Bacharach scale.
b) Gas burners: 9% to 10% with CO less than 50
ppm.
c) Inspect all flue gas joints (sections, attachments,
breeching and vent) for gas tightness. Remove
the jacket panels in order to thoroughly inspect
all rope seal joints between the sections.
D. CHECK BOILER CONTROLS
1. Limit and Operating Temperature Controls
a) Lower the setting of each control until the burner
shuts down.
2. Low Water Cutoffs
a) Test probe type controls by using the Push-to-Test
Button.
b) Test float type controls. ASME CSD-1 requires
the control to be piped with Test-n-Check valves
in order to allow isolation for test.
3. Follow additional instructions in the Burner Manual
for proving the burner component operation.
4. Check all controls to make sure they function
correctly.
5. After all controls have been proven, set the
Operating and High Limit Temperature Controls to
the temperatures desired.
38
STARTING THE BOILER
Table 9.1: Typical Combustion Chamber Pressure and Boiler Draft Loss
LC-04
LC-05R
LC-05
LC-06
LC-07
LC-08
LC-09
LC-10
LC-11
LC-12
LCE-13
LCE-14
LCE-15
LCE-16
LCE-17
LCE-18
LCE-19
LCE-20
LCE-21
LCE-22
LCE-23
LCE-24
+ 0.22
+ 0.22
+ 0.24
+ 0.26
+ 0.27
+ 0.28
+ 0.29
+ 0.30
+ 0.31
+ 0.32
+ 0.24
+ 0.25
+ 0.26
+ 0.27
+ 0.28
+ 0.29
+ 0.30
+ 0.31
+ 0.31
+ 0.31
+ 0.32
+ 0.32
Model
Boiler Draft Loss
(Inches w.c.)
Combustion Chamber Pressure
with 0.1” w.c. at Rear Flue Box Test Port
(Inches w.c.)
0.12
0.12
0.14
0.16
0.17
0.18
0.19
0.20
0.21
0.22
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.21
0.21
0.21
0.22
0.22
NOTE: Actual chamber pressure and draft loss readings may vary with each boiler and installation due to variation in the heat exchanger,
deposits in the flueways, actual burner firing rate and excess air conditions. Use the above numbers as a general guide only. If the measured draft
loss is considerably higher than the above, check the flueways for deposits and confirm the burner firing rate.