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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.
E. Clean Boiler Flueways.
1. Shut down gas boiler in accordance with lighting/
operating instructions attached to inside of Front
Removable Door. See Figure 45.
2. Remove Burner Access Panel and Burners. See
Paragraph F. Clean Burners if necessary.
3. Remove Jacket Top Panels.
4. Remove Canopy from top of boiler.
5. Thoroughly clean the ueways with ue brush. See
Figure 58.
6. Clean boiler heating surface accessible from
combustion chamber with straight handle wire
brush. Reinstall burners and connect gas train. See
Paragraphs F & G.
7. Place boiler in operation in accordance with
Lighting or Operating instructions. Test gas line for
leaks in accordance with Section VI: Gas Piping,
Paragraph C.
8. Replace Jacket Front Removable Door.
i. Inspect connecting lines to boiler for
accumulation of mud and scale. Clean as
necessary.
ii. Examine wiring for brittle or worn
insulation and clean electrical contact.
iii. Inspect solder joints on bellows and oat.
Check oat for evidence of collapse. Check
mercury bulb (where applicable) for
mercury separation or discoloration. Do not
attempt to repair mechanisms in eld.
Complete replacement mechanisms,
including gaskets and instructions, are
available from low water cutoff
manufacturer.
c. Five (5) Years or 100,000 switch cycles. Replace
switch and oat mechanisms.
C. Water Feeder and Additional Low Water Cutoff.
Refer to manufacturer's instructions.
D. Vent System. Check annually for:
1. obstructions
2. accumulations of soot
3. deterioration of vent pipe or vent accessories due to
condensation or other reasons
4. proper support—no sags, particularly in horizontal
runs
Figure 58: Boiler Flueway Cleaning