14
Doors adjustment
The doors may need to be adjusted to be
completely airtight. The gaskets airtightness
can be adjusted using the adjustment screw
located on the fireplace façade at the bottom
of the fireplace opening. (An Allen key # 1/8
will be necessary for adjustment).
Glass care - Replacement
The glass used for the BIS ULTRA is a high
temperature glass (1400° F). If the glass
breaks, it must be replaced with a ceramic
glass. Tempered glass or ordinary glass will
not withstand the high temperatures of the
BIS ULTRA. Replacement glass should be
purchased from a Security Chimneys
International dealer. Do not operate the unit
with cracked or broken glass.
Figure 4
Glass care - Cleaning
The BIS ULTRA is designed to keep the glass clean under normal operating conditions. If the BIS
ULTRA is operated continuously with the combustion air damper closed, the glass will tend to get
dirty unless the fuel, firebox and glass are maintained at hot temperatures (see "Refueling for best
performance) To clean the glass, there are a number of specially designed cleaners. Your
authorized Security dealer can recommend a suitable cleaner which is available in your area.
Regular household glass cleaners will not clean creosote. Do not use abrasives such as steel pads,
steel wool or oven cleaner as they will scratch the glass.
Gasket replacement
Remove the doors from the unit (see page 13) and lay them on a clean unabrasive surface. To
replace the gasket, first remove all of the old gasket and gasket cement. Make sure that the surface
is totally clean before applying new cement or adhesion problems may result. Apply gasket cement
to the gasket channel and install the new gasket. This replacement part is available from your
Security dealer in the following dimensions:
Gasket
Length
Quantity
Dimensions
Around glass
47.5"
2
5/16" dia.
Between doors
19"
1
5/16" dia.
On door frame
40"
2
5/8" dia.
Around ash trap
8"
1
2" wide x 1/4" thick
