MAINTENANCE

E.ANNUALLY (BEFORE START OF HEATING SEASON)

DANGER

When servicing or replacing components, be absolutely certain that the following conditions are met:

Water, gas and electricity are off.

The boiler is at room temperature.

There is no pressure in the boiler.

1.Check flueways and burners for cleanliness and clean if necessary. Use the following procedure if cleaning is required:

a.Refer to the Operating Instructions in Figure 7.3 to properly turn off the gas to the boiler.

b.Turn off all electrical power to the boiler.

c.Remove burners and brush gas outlet ports lightly using a soft bristle brush.

d.Remove the vent pipe from fan adapter, top jacket panel, flue collector/fan assembly and flue baffles.

e.Brush flueways with wire brush.

f.To the extent possible, inspect inside of vent pipe for obstructions. Remove or replace as necessary.

g.Re-install baffles. When replacing the flue collector/fan assembly, be certain that the blanket seal between the flue collector and top section makes a tight seal to prevent leakage of the products of combustion.

h.Re-install the top jacket panel and vent pipe.

i.Re-install burners.

2.Inspect entire venting system for corrosion, support and joint integrity. Repair as necessary. Inspect vent termination for any obstruction that may hinder proper venting.

3.Check the pilot and main burner flame. See Figure

8.3. The pilot should provide a steady flame enveloping 3/8to 1/2(1 cm to 1.2 cm) of the flame sensor. If required, adjust the pilot as stated in the gas valve manufacturer’s instructions. The main

burner flame inner cone should be approximately 1- 1/2(4 cm) high and should have a very sharp, blue color characteristic.

Figure 8.3: Intermittent Pilot and Main

Burner Flame

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PB Heat DE manual Annually Before Start of Heating Season, Intermittent Pilot and Main Burner Flame

DE specifications

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