Install Instructions

c. Remove burners and brush orifice spuds lightly

using a soft bristle brush.

d. Remove the vent pipe, vent damper, top jacket

panels and flue collector/draft diverter. Remove

baffles on MIHII™ models.

e. Brush flueways with wire brush.

f. To the extent possible, inspect inside of vent pipe

and vent damper for obstructions in flow or vent

damper movement. Remove or replace as

necessary.

g. Re-install baffles on MIHII™ models. When

replacing the flue collector/draft hood, 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 of the jacket, vent damper and

vent pipe.

i. Re-install burners.

2. Inspect entire venting system for corrosion, support

and joint integrity. Repair as necessary.

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

9.1. 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 9.1: Intermittent Pilot and Main

Burner Flame