PB Heat DE User Manual download pdf (Page 36)

E. ANNUALLY (BEFORE START OF HEATING

SEASON)

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 3/8″ to 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.

MAINTENANCE

Figure 8.3: Intermittent Pilot and Main

Burner Flame

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.

DANGER

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PB Heat DE User Manual Page 36

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