106636-02 - 12/19
30
X-2
Installation, Operating & Service Manual
12
Service and Maintenance
(continued)
D. Clean Main Burners and Firebox.
1. To remove burners for cleaning, changing
orifices, or repairs:
a. Remove Jacket Front Panel.
b. Disconnect pilot tubing at gas valve.
c. Disconnect 3-wire plug at the gas valve.
d. Remove wires to flame roll-out switch.
e. Disconnect ignitor sensor cable at boiler
control.
f. Remove burner access panel.
g. Mark location of pilot main burner on the
manifold if marking on manifold is missing.
h. Hold burner at throat. Lift front of burner
to clear orifice. Pilot burner can only be
removed by lifting the burner adjacent to its
right first.
2. Brush top of burners with a soft bristle brush.
Vacuum burners.
3. Check orifices. Drilled passageways must be
free of lint or dirt.
4. Vacuum tip of Pilot Burner.
5. Clean firebox by vacuuming. Exercise care not
to damage base insulation.
6. Install burners by reversing procedure used
to remove burners. Make sure burner with
pilot assembly is in same location as original
installation.
WARNING
Be careful handling pilot tubing. Do not crimp or
crack gas pilot tube. Leaking pilot tubing could
result in serious injury, or substantial property
damage.
Check burners to see that they are located
properly in slot at rear of burner tray. Reinstall
burner access panel. Reconnect flame roll-out
switch wires, pilot gas supply, or pilot lead.
7. Connect pilot gas supply, igniter/sensor wire,
and ground wire at Boiler Control.
8. Install Burner Access Panel. Connect Flame
Rollout Switch wires.
E. Inspect Water Piping
1. Check all system piping for leaks.
2. Repair any leaks before placing back into
service.
F. Inspect Temperature/Pressure Gauge
1. Water temperature needle should move with
variation in water temperature.
2. Pressure needle should move with variation in
pressure.
3. Replace gauge if needed.
G. Operate Safety Relief Valve
1. When manually operating relief valve,
water will discharge. Take precautions to
avoid contact with hot water and avoid water
damage. Inspect relief valve and lift lever to
verify flow.
2. If relief valve leaks or will not seat properly,
replace relief valve.
H. Inspect Gas Piping
1. Sniff around boiler area for indication of gas
leak.
2. Locate leaks using approved gas detector,
a non corrosive leak detector fluid or other
approved leak detection methods.
3. Repair any leaks before placing back into
service and retest.
I. Inspect Air Openings
1. Keep boiler area clear of combustible
materials.
2. Remove any obstructions in boiler room
that will hinder flow of combustion and
ventilation air and dilution air.
J. Follow "Operating Instructions" outlined in Figure
9-2.
K. Inspect Pilot Flame
See "Start-up and Checkout - Check Pilot Burner
Flame"
L. Inspect Main Burner Flames
See "Start-up and Checkout - Check Main Burner
Flame"
M. Check gas inlet pressure
See "Start-up and Checkout - Check gas inlet
pressure"
N. Check gas outlet pressure
See "Start-up and Checkout - Check gas outlet
pressure"
O. Check Gas Input Rate to Boiler
See "Start-up and Checkout - Check Gas Input to
Boiler"
P. Measure CO in vent. See "Start-up and Checkout -
Measure Carbon Monoxide Level".
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