Burnham 8HE Series Installation, Operating And Service Instructions page 35

8
Service
(continued)
!
CAUTION
• Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation. Verify proper
operation after servicing.
• Keep hands and feet away from combustion
chamber when placing boiler in operation.
B.
Maintenance of Low Water Cut-off. Follow
low water cut-off maintenance instructions in
HydroStat ® manual. If a separate low water
cut-off is installed in the piping, follow control
manufacturer's instructions.
C.
Vent System. Check for:
1. obstructions
2. accumulations of soot
3. deterioration of vent connector, vent
accessories, or chimney due to condensation
or other reasons
4. proper support—no sags, particularly in
horizontal runs
5. tightness of joints. Remove all accumulations
of soot with wire brush and vacuum
Remove all obstructions. Replace all deteriorated
parts and support properly. Seal all joints.
D. Remove Main Burners for cleaning, changing
orifice plugs, or repairs.
1. Shut down gas boiler in accordance with
Operating Instructions on inside of Front
Removable Door. Close Manual Shut-off Valve.
2. Remove Front Removable Door. Raise Lower
Front Tie Bar.
3. Disconnect ignition system.
!
CAUTION
Sheet metal parts my have sharp edges or
burrs. Use proper Personal Protective Equipment
(PPE).
4. Remove burner access panel(s).
5. Mark location of Main Burner with Pilot Bracket
on manifold.
6. Remove hitch pin clips from Main Burner
Orifices.
111828-01 - 1/23
8HE Installation, Operating & Service Instructions
7. Hold Main Burner on throat. Lift slightly to
raise rear of burner. Push to rear of boiler until
burner clears Main Burner Orifice. Lift burners
out.
8. Check burners to be sure they do not contain
foreign matter or restrictions. Clean burners
with a soft bristle brush, blow any dirt out with
compressed air or use a vacuum cleaner. See
Figure 8-2.
E. Inspect Boiler Flueways. Clean if necessary. See
Figure 8-2.
1. Shut down gas boiler in accordance with
Lighting/Operating Instructions on inside of
Front Removable Door. Close Manual Shut-off
Valve.
2. Disconnect vent system. Remove Draft Hood.
3. Remove Jacket Top Panel.
4. Remove Canopy from top of boiler.
5. Remove flue baffles. Refer to Figure 8-2 for
instructions on how to remove baffles from
flueways. Remove any accumulated scale or
soot.
6. Thoroughly clean flueways with flue brush,
removing all scale and soot. See Figure 8-2.
7. Clean boiler heating surface accessible from
combustion chamber with straight handle wire
brush.
8. Reinsert baffles into flueways by reversing
steps given in Figure 8-2. Tabs at top of each
baffle should rest on top of flue pins.
9. Install Canopy. See Section 2: Boiler
Assembly, Paragraph H.
10. Install Jacket Top Panel, Draft Hood, Vent
Damper and Vent System.
F. Clean Combustion Chamber by vacuuming.
Exercise care to avoid damaging Base Insulation.
G. Install Burners by reversing procedures used to
remove burners. Verify Main Burners are properly
located on support bracket in Base Rear Panel,
seated on Main Burner Orifices, and secured
with hitch pin clips. Verify Main Burner with Pilot
Bracket is in proper location. See Table 8-1.
H. Lubrication. There are no parts requiring
lubrication by technician or owner. Circulator
bearings are water lubricated.
35