Burnham 8HE Series Installation, Operating And Service Instructions page 32

7
System Start-up
!
CAUTION
• Avoid operating this boiler in an environment
where saw dust, loose insulation fibers, dry wall
dust, etc. are present. If boiler is operated under
these conditions, the burner interior and ports
must be cleaned and inspected daily to insure
proper operation.
• Keep hands and feet away from combustion
chamber when placing boiler in operation.
I. Check pilot burner flame and main burner flames
through observation port.
1. Check pilot flame. Refer to Figure 7-2 for pilot
detail.
2. Adjust thermostat to highest setting.
3. Check main burner flames. See Figure 7-3.
Flame should have clearly defined inner cones
with no yellow tipping. Orange-yellow streaks
caused by dust should not be confused with
true yellow tipping.
Yellow-tipping indicates lack of primary air.
Improper burner alignment on Main Burner
Orifice will also affect primary air injection.
Adjust primary air shutter as follows:
Figure 7-2: Honeywell Q3481B Pilot Flame
32
(continued)
8HE Installation, Operating & Service Instructions
INCANDESCENT OUTER MANTLE
Blue with occasional
orange flashing
OUTER CONE
Darker transparent blue
INNER CONE
Sharply outlined with
bright light blue
FLAME RETENTION INNER CONE
Partially lifted from burner
Figure 7-3: Main Burner Flame
a. Loosen lock screw.
b. Close air adjustment until yellow tips appear
on flames.
c. Slowly open air adjustment until clearly
defined inner cones are visible.
d. Tighten lock screw.
e. Use combustion equipment if adjusting
air shutters to less than 11/16 in. opening
between front edge of burner air shutter and
burner mounting ring.
4. Adjust thermostat to normal setting.
J. Check thermostat or operating control operation.
Raise and lower temperature setting to start and
stop boiler operation.
K. Check ignition system shut-off.
Disconnect ignitor/sensor cable from ignition
module. Gas valve must close and pilot and main
burners extinguish.
L. Test LWCO functionality.
1. Press "TEST"/SETTINGS button on Hydrostat
3200. Boiler should shut down.
2. Set thermostat to call for heat and push
"TEST"/SETTINGS button on Htdrostat 3200 to
simulate low water condition.
3. Red "LOW WATER" LED will illuminate and
burner will shut down.
4. Release "TEST"/SETTINGS button and burner
will light off.
111828-01 - 1/23