68
IX. Service
A. General. Inspection and service must be conducted
annually. Turn off electrical power and gas supply
while conducting service or maintenance. Follow
instructions TO TURN OFF GAS TO APPLIANCE.
See Lighting/Operating Instructions on inside of Front
Removable Door.
GNINRAW
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B. Maintenance of Low Water Cut-off (if used). Follow
instructions provided with low water cut-off.
C. Vent System. Check 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
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 Lighting/
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.
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.
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 60.
E. Clean Boiler Flueways.
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. Thoroughly clean flueways with flue brush,
removing all scale and soot. See Figure 60.
6. Clean boiler heating surface accessible from
combustion chamber with straight handle wire
brush.
7. Install Canopy. See Section II: Boiler Assembly,
Paragraph G.
8. Install Jacket Top Panel, Draft Hood, Vent Damper
(if used) and Vent System.
GNINRAW
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