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SECTION III - SERVICE
1. Inspection should be conducted annually. Service as
frequently as specified in paragraphs below. While service
or maintenance is being done, Electrical Power and all Gas
Supply to the Boiler must be "off".
2. VENT SYSTEM. Vent system (see Figure 8 for typical
installation) should be checked annually for:
A. Obstructions.
B. Accumulations of soot.
C. Deterioration of vent pipe or vent accessories due to
condensation or other reasons.
D. Proper support - no sags, particularly in horizontal
runs.
E. Tightness of joints.
F. Proper vent damper operation - see Section II, para-
graph 9.
G. Remove all accumulations of soot with wire brush and
vacuum, see Fig. 29. Remove all obstructions. Replace
all deteriorated parts and support properly. Seal all
joints.
3. CLEANING BOILER FLUES, see Fig. 29.
Flue passageways in the boiler sections should be
checked annually for any blockage or accumulation of soot.
To obtain access to flueways:
A. Remove vent pipe, damper (if boiler is so equipped),
blocked vent switch, and draft hood.
B. Remove sheet metal screws securing Jacket Top Panel,
lift panel and rotate about relief valve piping until top
of boiler is exposed.
C. Remove bolts securing Canopy to Boiler Sections.
Remove Canopy - flueways are now exposed.
D. Models with flue gas baffles only: Remove baffles by
lifting out of flueways.
Using flashlight, examine all flue passageways. If
passageways are free of soot and obstruction, replace
canopy (and flue gas baffles, if applicable), and seal.
Reinstall Jacket Top Panel, draft hood, blocked vent
switch, damper (if boiler is so equipped), and vent
pipe.
If the flue passageways need cleaning, remove burners
as described in paragraph 4 below. Using long handle
wire or bristle flue brush and vacuum, brush flueways
thoroughly from top of boiler as illustrated in Fig. 29.
Replace canopy and seal with boiler putty. Reinstall
Jacket Top Panel, draft hood, blocked vent switch,
damper (if boiler is so equipped), and vent pipe.
NOTICE
4. BURNERS AND FIREBOX SHOULD BE CLEANED
ANNUALLY, AND IF NECESSARY ADJUSTED ONCE
A YEAR BY A QUALIFIED SERVICE AGENCY.
A. TO REMOVE BURNERS FOR CLEANING,
CHANGING ORIFICE PLUGS, OR REPAIRS.
1. Remove the jacket front panel.
2. Disconnect pilot tubing at the gas valve.
(See Figures 17 and 18)..
3. Disconnect thermocouple (standing pilot) or pilot lead
wires (intermittent ignition) at the gas valve.
4. 40mm and 50 mm burners only. Remove injection
shield assembly, where used. (See Figure 30).
5. Remove wires to flame roll-out switch.
6. Remove the burner access panel.
7. 50mm dia. burners only. Remove orifice hitch pin
clips.
Figure 29: Cleaning of Vent System and
Boiler Flues