Removing The Burner; Installing The Burner - IBC SL 14-115 G3 Installation And Operating Instructions Manual

NOTE
The safety warning regarding
burner refractory on page 4-2 of
this manual must be observed.
3-6
SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS
Re-assembly
1. Inspect the refractory for cracks, degradation and flatness. If in doubt, replace with a
new one.
2. If installing a new refractory, first place it onto the lid, aligning it at the igniter hole,
then make an alignment mark on the refractory to correspond with the previously
made line on the lid.
3. Carefully insert the refractory into the heat exchanger combustion chamber, using the
alignment marks for proper positioning.
4. Ensure that the lid gasket is in good condition, and is in place and level.
5. Carefully insert the lid-burner assembly straight down, ensuring limited contact
between the burner and refractory and observing the alignment markings.
6. Install the six hex nuts to secure the lid in place. Tighten by hand, and then tighten
with an extra 1/2 to 1 turn. Caution! Over-tightening these nuts will cause the lid to
warp and possibly leak fumes or flames.
7. Re-install the igniter. Tighten the screws by hand, and then tighten with an extra 1/8 of
a turn.
8. Re-attach the igniter wire to the igniter.

3.4.2 Removing the burner

1. Turn off the power and the gas supply to the boiler.
2. Remove the front cover, and allow the boiler to cool down to the surrounding
temperature.
3. Remove the 8 Torx screws around the fan coupler, and lift off the fan coupler carefully.
Note: The fan coupler seals against the heat exchanger lid with a high temperature
silicone O-ring. If the O-ring is damaged in any way it must be replaced.
4. Carefully pull the burner straight up. The burner is sealed to the heat exchanger
lid with a graphite gasket. If the graphite gasket is damaged in any way it must be
replaced.

3.4.3 Installing the burner

1. Place the burner gasket onto the heat exchanger lid in the recess.
Note: The burner gasket has a notch that needs to be matched to the key in the
recess.
2. Place the burner into the heat exchanger lid on top of the gasket.
Note: The notch in the burner must match the key in the gasket.
3. Ensure that the O-ring is seated in the groove of the fan coupler, and place the fan
coupler onto the heat exchanger lid.
4. Install the 8 fan coupler screws loosely, then tighten them slowly in a cross pattern so
that the fan coupler is tightened to the lid evenly.
5. Turn on the power and the gas supply to the boiler.
6. Create a call for heat and inspect the fan coupler gasket for leaks.
7. Install the boiler door.
INSTALLATION AND OPERATION INSTRUCTIONS