13
Gas-Fired Direct Vent Cast Iron Boilers – Field Assembly Instructions
Step 26
Install burner inspection ports (front and rear)
1. Each burner inspection port consists
of a plate, gasket, inspection glass, and
another gasket.
2. Place against the mounting boss on the
top front section.
3. Secure with the bolts and washers
provided.
DO NOT overtighten
.
Step 27
Install the combustion chamber
Th e combustion chamber
material is fragile, and can
be cracked or gouged with
incorrect handling. HANDLE
CAREFULLY! DO NOT use
the chamber if it is damaged.
Use of an approved dust
respirator is strongly
recommended when handling
the insulating components of
the boiler.
1. Remove the combustion chamber
sections (four pieces) from the shipping
tubes and remove protective packaging.
2. Carefully place the four combustion
chamber side pieces in the top as
shown.
3. The combustion chamber should sit
evenly in the opening, with its FLAT
surface facing up and even with the
surface of the sections.
4. Use the loose ceramic fi ber wadding
supplied with the boiler to pack the
corners of the chamber. This will hold
the pieces fi rmly in position and ensure
a tight seal at the joints.
Step 28
Install the burner gasket and apply silicone sealant to top machined surface of boiler
Make sure the silicone sealant is continuous. Failing to provide a complete seal could result in the leakage of
combustion gases.
Use of an approved dust
respirator is strongly
recommended when handling
the insulating components of
the boiler.
1. Carefully place the burner gasket on the
surface of the combustion chamber.
2. Apply a generous bead of silicone
sealant completely around the outside
the chamber on the machined surface.
