Install Instructions

27
2. Brush top of burners with a soft bristle brush. See
Figure 23. Vacuum burners.
3. Check orices. Drilled passageways must be free of
lint or dirt.
4. Vacuum tip of Pilot Burner.
5. Clean rebox 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
- see Table 9.
Check burners to see that they are located properly
in slot at rear of burner tray, see Figure 23. Reinstall
injection shield assembly (40mm burners only,
where used) and burner access panel. Reconnect
ame roll-out switch wires, pilot gas supply,
thermocouple lead or pilot lead.
Figure 23: Burner Cleaning and Installation
Figure 22: Flueway Cleaning
7. Connect pilot gas supply, igniter/sensor wire, and
ground wire at Boiler Control.
8. Install Burner Access Panel. Connect Flame Rollout
Switch wires.
F. Check Operation. Follow steps C through J from
Section VII: System Start-up.
G. Removal or replacement of pilot assembly or pilot
assembly parts. If pilot assembly, sensor or pilot orice
need replacing, remove main burner with pilot using
procedure described in Paragraph E.
1. To replace orice spud:
a. Disconnect pilot tubing. The Honeywell Q3481B
pilot orices are spud type retained by the
compression tting. Replace with desired orice
spud. See Key No. 5B in Repair Parts Section.
b. Reconnect pilot tubing and check for leaks.
2. To replace complete pilot assembly.
a. Remove machine screw holding pilot burner to
pilot bracket.
b. Disconnect pilot piping.
c. Disconnect all other leads to pilot.
d. Select pilot assembly with identical model
number, reconnect leads and pilot tubing -
re-secure to pilot bracket.
3. To adjust or check spark gap between electrode and
hood on Honeywell Q3481B pilot.
a. Use round wire gauge to check spark gap.
b. Spark gap should be 1/8 inch for optimum
performance.
4. Reinstall main burner following procedure described
in Paragraph E.
H. Lubrication. There are no parts requiring lubrication
by service technician or owner. Circulator bearings are
water lubricated.