BIS Ultima User manual

Installation and Operating
Instructions
This installation manual will help you
obtain a safe, efficient, dependable
installation for your fireplace and
chimney system. Please read and
understand these installation instructions
before beginning your installation.
CAUTION Do not attempt to modify or
alter the construction of the fireplace or
its components. Any modification or
alteration of construction may void the
warranty, listings and approvals of this
system. In that case, Security Chimneys
International Ltd will not be responsible
for damages. Install the fireplace only as
described in these instructions.
SAVE THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING The fireplace cannot be
operated without a door. Consult your
dealer to select the correct door model of
your choice.
This fireplace is also certified for use in
mobile or manufactured homes
2125 Monterey St., Laval, Quebec, Canada, H7L 3T6
Printed in Canada Rev. 12 December 2009 PIBISULTIMA
•
Hot! Do not touch! The glass
and surfaces of this appliance
will be hot during operation and
will retain heat for a while after
shutting off the appliance.
Severe burn may result.
•Carefully supervise children in
the same room as appliance.
•
If small children are present in the home, it
is recommended that this appliance be used
with a Firescreen kit.
Listed to standards
ULC-S610 UL-127
Report # 3011202
™

ii
TABLE OF CONTENTS
Page
1. SAFETY RULES and Specifications for Mobile or Manufactured Home Installation ... 1
2. CERTIFICATION LABEL ................................................................................ 2
3. THE FIREPLACE ............................................................................................... 3
3.1 INTRODUCTION .................................................................................................................. 3
3.1.1 Parts Required
3.1.2 Additional Equipment (optional)
3.2 OPERATING THE BIS ULTIMA™ .................................................................................... 4
3.2.1 Fuel
3.2.2 First Fires
3.2.3 Building a Fire
3.2.4 Primary Air and Air Boost Controls
3.2.5 Accelerated Combustion
3.2.6 Medium Combustion
3.2.7 Slow Combustion
3.2.8 Refuelling For Best Performance
3.2.9 Smoking – Causes And Troubleshooting
3.3 MAINTAINING YOUR BIS ULTIMA ................................................................................. 8
3.3.1 Creosote
3.3.2 Chimney Maintenance
3.3.3 Top Baffle Removal Prior to Cleaning The Chimney
3.3.4 Dealing With a Chimney Fire
3.3.5 Finish Door Casing Care
3.3.6 Ashes
3.3.7 Refractory Installation
3.3.8 Door Installation
3.3.9 Door Adjustment
3.3.10 Glass Care – Replacement
3.3.11 Glass Care – Cleaning
3.3.12 Gasket Replacement
3.4 FIREPLACE INSTALLATION ............................................................................................ 12
3.4.1 Locating The BIS ULTIMA
3.4.2 Hearth Extension Requirements
3.4.3 Framing, Facing And Mantel
3.5 HOT AIR DUCTING INSTALLATION .............................................................................. 17
3.5.1 Gravity Kit
3.5.2 Central Forced Air Kit
3.6 OUTSIDE AIR KIT ............................................................................................................... 21
3.6.1 Outside Air Kit Installation
4. THE CHIMNEY .................................................................................................... 22
4.1 CHIMNEY INSTALLATION NOTES ................................................................................. 22
4.2 CHIMNEY INSTALLATION INSTRUCTIONS ................................................................. 23
4.3 OFFSET CHIMNEY INSTALLATION .............................................................................. 26
4.4 ANGLED WALL RADIATION SHIELD ............................................................................ 29
4.5 CHIMNEY SUPPORTS INSTALLATION .......................................................................... 30
4.6 MULTIPLE TERMINATIONS ............................................................................................ 30
4.7 CHIMNEY ADAPTOR S-2100+ / HT6000+) ...................................................................... 31
4.8 INSTALLATION INSTRUCTIONS FOR MASONRY APPLICATION ............................ 32
. PARTS AND COMPONENTS LIST ................................................................. 33
6. OPTIONS ............................................................................................................. 34
7. APPENDIX (Specifications, Clearances, Replacement Parts) ......................... 34

1
1. SAFETY RULES FOR OPERATING YOUR
FIREPLACE MODEL BIS ULTIMA
•Use only a Security Fireplace glass door, specifically designed for the model BIS
ULTIMA™ fireplace.
•When cleaning the fireplace, the ashes should be placed in a metal container with a tight
fitting lid. The closed container of ashes should be placed on a non-combustible floor or
on the ground outside the house, pending final disposal. If the ashes are disposed of by
burial in soil or otherwise locally dispersed, they should be retained in the closed
container until all cinders have thoroughly cooled.
•When installed in a mobile or manufactured home:
•Mobile or manufactured home installations must be installed in accordance with
the requirements of the Department of Housing and Urban Development (HUD)
“Mobile Home Construction and Safety standards” for US or Canada Mortgage
and Housing Corporation (CMHC) for Canada.
•The fireplace must be fastened to the floor by unfolding and screwing the small
tabs on both sides at the bottom of the fireplace.
•It is necessary to have access openings, for inspection purpose only, into built-in
enclosures surrounding the fireplace installation. Such openings to require a
household tool for access.
•The vapor barrier of the mobile home shall be as close as possible of the location
where the chimney assembly penetrates the ceiling and roof structure with no
interference to the required clearance to combustible material.
•When the mobile or manufactured home has a flat roof, the Attic Radiation Shield
must be installed from below going through the roof (See figures 26a & 27a).
•Warning Do not install in a sleeping room.
Warning: The fireplace must be operated with the doors fully opened or fully closed. If the
doors are left partly opened, smoke may be drawn into the room. If the unit is
operated with the doors fully opened, the optional firescreen must be used.
Caution: Never use gasoline, kerosene, charcoal lighter fluid or similar liquids to start
or rekindle a fire in this fireplace. Keep all such liquids well away from the
fireplace at all times.
Caution: Keep combustible materials at least 48 inches away from the front of the
fireplace opening.
Caution: Never leave children unattended when there is a fire burning in the fireplace.
WARNING: THIS FIREPLACE HAS NOT BEEN TESTED WITH AN UNVENTED OR
VENTED GAS LOG SET. TO REDUCE RISK OF FIRE OR INJURY, DO
NOT INSTALL AN UNVENTED GAS LOG SET INTO THIS FIREPLACE.

2
2. CERTIFICATION LABEL

3
3. THE FIREPLACE
3.1 INTRODUCTION
The BIS ULTIMA™ fireplace is an energy efficient, heat circulating, close combustion
fireplace. You will receive a lifetime of comfort and enjoyment from your fireplace
provided it is installed, maintained and operated properly.
•Please read these instructions and retain this manual for future reference.
•Before beginning the fireplace installation, consult the local authorities to obtain your
building permit and check your local building codes. Install the fireplace only as
described in these instructions and using only Security Chimneys International
components.
•The BIS ULTIMA is not intended for use with a gas log. Failure to follow these
instructions will void the certification and the warranty of the fireplace and may result in
an unsafe installation.
3.1.1 Parts Required
•Fireplace model BIS ULTIMA
•Door
•Outside air kit (included with fireplace)
•6" diameter chimney model ASHT+, S-2100+, HT6000+, HT6103+ or AC
manufactured by Security Chimneys International only, including
- Chimney lengths
- Elbows (where necessary)
- Associated components as per these installation instructions
3.1.2 Additional Equipment optional)
•5" flexible venting system (central forced air kit- Not EPA certified)
•Gravity venting system
•Panel for clean face option (only with gravity venting system)
•Rigid firescreen
•Fireplace fan kit
•Fireplace blower kit
•Blower speed control

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3.2 OPERATING THE BIS ULTIMA™
3.2.1 Fuel
The BIS ULTIMA fireplace is designed to work best when fuelled with seasoned cordwood.
Hardwoods are preferred to softwoods since the energy content of wood is relative to its
density. Hardwoods will result in a longer burning fire and less frequent refuelling. A
moisture content of 15% to 20% (seasoned) is recommended. Wood that has been cut and
split and let to dry under a cover for a period of one year will usually meet that criteria.
Excessively wet wood will be difficult to burn and will result in lower efficiency, increased
creosoting and deposits on the glass and in the chimney. Excessively dry wood will burn
well but will also have higher emissions and shorter burning time.
Do not burn scrap or garbage, treated wood or wood such as driftwood from the ocean which
has been exposed to salt or other chemicals. Salt or chemicals can corrode the firebox and
chimney. Do not burn large amounts of paper, cardboard, Christmas tree branches or
building construction materials. Intense firing with these materials may overheat the
fireplace, causing damage to the unit, a fire or even possibly igniting a chimney fire if the
chimney is creosoted.
Processed firelogs can be used. Refer to warnings and cautions markings on the packaging
prior to use.
3.2.2 First Fires
Before using the fireplace make sure to remove the plastic wrapping on the door. Remove all
remaining glue with mild soap.
The first or 6 fires should be small fires of short duration (about 30 to 60 minutes).
This will help cure the refractory bricks. The first fires may produce slight smoking due to
drying of the paint and steel and any dust accumulated on the fireplace will burn off at this
time. It may set off a smoke alarm located in the same room. For this reason the room
should be well ventilated for the first few fires.
3.2.3 Building a Fire
To start a fire, place several crumpled up balls of newspaper in the firebox. Place small dry
pieces of kindling on top of the paper, criss-crossing the kindling so that there are air spaces
in between. Keep the fuel far back enough so that air can get underneath. Open the air
controls fully and light the newspaper. Once the newspaper and the kindling is well ignited,
close the door. Once the kindling fire is well established, cordwood can be added. (see
Primary Air Combustion Control section for proper operation of the air controls)
The unit will burn best with 2-3 pieces of cordwood spaced 1 to 2 inches apart and allowing
air to get under the fuel. Criss-crossing or arranging the fuel so that air can get underneath,
will help the fire to get started easily. The unit should be operated with the air control fully
open long enough to get the cordwood well ignited.

5
3.2.4 Primary Air and Air Boost Controls
There is no flue damper in the BIS ULTIMA™ fireplace. As is common with air tight
stoves, the combustion air control sets the flow of air entering the firebox. This allows for a
more precise control of the fire. The combustion air control is located below the door on the
left side. The main source of air (primary air) entering the firebox can be diminished by
moving the air combustion control from left to right. The primary air is fully opened when
the air control is completely moved to the left. The air control device can also be used to add
an extra boost of air especially during fire start up and reloading of the unit. Pulling the air
combustion control will induce an air boost at the base of the fire allowing an easier fire start
up. When the fire is well established, the control can be pushed forward to shut down the air
boost allowing for a longer burn time. The combustion air control should be in the closed
position (primary air and air boost) when the fireplace is not in use. This will minimize air
leakage up the chimney. The combustion air control should be opened before opening the
door to minimize the possibility of back draft coming into the room.
ACCÉLÉRÉE
Figure 1
3.2.5 Accelerated Combustion
The maximum heat output for the BIS ULTIMA fireplace is achieved by burning with the
door closed and the combustion air opened and pulled back. By this method, the BIS
ULTIMA fireplace can produce up to 55,000 BTU of heat per hour. However, it will be
necessary to reload with wood every one or two hours. This is the least efficient method of
burning the BIS ULTIMA fireplace.
Use caution when firing with the combustion air control wide open. Only burn cordwood in
this manner. Small dry pieces of softwood and construction scraps will burn very intensely
using this method and may damage the firebox.

6
3.2.6 Medium Combustion
This is the recommended mode of operating the BIS ULTIMA™ fireplace and should be the
one normally used since it will deposit the least amount of creosote on the glass and in the
chimney. The combustion air control must be 3/4 closed and pushed forward to close the air
boost. The precise setting will depend on many factors, including chimney length and the
moisture content of the wood.
For instance, a long chimney will necessitate closing the damper more. To obtain the proper
combustion, close the damper completely, then open it about 1/4" to 1/2". Three medium
size pieces of wood should be burning on a bed of hot coals. The heat output will be
approximately 30,000 BTU per hour and the loading time will be about every 3-4 hours.
Softwoods may be burned using this method but the time will be substantially reduced.
3.2.7 Slow Combustion
When the air combustion control is completely closed, the fireplace is in a slow combustion
phase. If the hearth is hot enough, slow combustion will not stop the fire, but there will be a
noticeable change in the flame pattern. The flames will be slow and may appear dirty if the
wood is too wet (moisture content of 20% and more). Do not allow the wood to burn without
flame, since this will produce excessive creosote in the unit.
Creosote may accumulate on the glass door. This method of burning should be used only
after operating the BIS ULTIMA fireplace with the air control opened to produce a hot fire
for about an hour or at medium pace for at least 3 hours. Slow combustion can be used at
night in order to reduce the heat output and to prolong the burn. The loading time will be
between 6-8 hours.
3.2.8 Refuelling For Best Performance
The BIS fireplace will operate best if attention is given to operating the unit with the damper
fully opened after refuelling in order to bring the firebox and the chimney system up to their
optimum operating temperature. Combustion efficiency is relative to firebox temperature. A
temperature of 500º C and up, with a visible flame, in the upper part of the firebox indicates
a maximum efficiency. To obtain this temperature, the fireplace must be operated with the
primary air and air boost controls fully opened during 10 to 20 minutes after reloading,
depending on the heat and on the moisture content of the wood. Once you have reached the
desired temperature, the air boost can be closed and the primary air set to a medium setting.
You know you have reached the desired temperature when, closing the primary air control,
you can see a flame at the top of the firebox. The benefit of this technique will be cleaner
glass, less creosoting, greater efficiency and the most pleasing fire for your enjoyment. If
your fireplace is equipped with a central forced air system, make sure the central blower is
turned off during reloading to avoid smoking problems.

7
3.2.9 Smoking – Causes and Troubleshooting
To reduce the likelihood of smoking when opening the door, set the combustion air controls
to the left before opening the door. Your fireplace has been designed and tested to provide
smoke free operation. Occasionally, there may be a small amount of smoking upon lighting
the fire, until the chimney heats up but this should not continue. If the fireplace continues to
smoke it is probably for one of the following reasons
A. Negative pressure in the house
As the fire burns, air goes up the chimney. This air must be replaced through leakage
into the house or through the outside air duct. When operating the BIS ULTIMA™
fireplace, open a nearby window temporarily to check if there is adequate air supply
replacement.
B. Fans operating (e.g.: range hood)
These fans draw air out of the house and may actually cause a negative pressure in the
house. Turn off all fans and open a nearby window to determine if this is the cause of the
problem.
C. Wet wood
Wet or tarred wood will smoulder and smoke instead of burn properly.
D. Dirty or blocked chimney
Check to make sure the chimney is clear and clean.
E. Chimney not long enough
The minimum chimney height is 12 ft. not including the fireplace height. The chimney
must extend at least 3 feet (915 mm) above its point of contact with the roof and at least 2
feet (610 mm) higher than any roof or wall within 10 feet (3 m) of it. When installed
with offsets, the minimum chimney height is 15 ft. Additional height will increase
draught and will decrease the tendency to smoke.
F. Poor chimney draft
With no fire, there should be sufficient draught to exhaust cigarette smoke introduced
under the baffle. Chimneys installed against an outside wall without protection may
generate back draught problems which will cause start-up problems. To prevent this,
open a nearby window, roll up a piece of paper and light it. Then, hold it in the upper
part of the firebox to warm up the chimney. Wait until the draught is sufficient, then start
the fire.
G. Blower for central forced air kit operating
Make sure that the blower is at the "off" position when you open the fireplace door for
reloading.

8
IMPORTANT NOTES
A. Do not block the hot air vents to the fireplace as this will cause the fireplace to overheat.
B. Never start a fire using gasoline, kerosene, charcoal lighter fluid or any other combustible
liquid.
C. Do not burn coal. The sulphur in coal will corrode the firebox.
D. Do not burn driftwood which has been in the ocean or salt water. The salt will corrode
the firebox and chimney.
E. Do not burn wood in the area in front of the grate.
F. Do not abuse the unit by burning paper, or cardboard or construction material such as
pressed wood, plywood or lumber.
G. Do not allow the wood to smoulder or burn without flame, since this will produce
excessive creosote in the unit.
3.3 MAINTAINING YOUR BIS ULTIMA ™
3.3.1 Creosote
When wood is burned slowly without a flame, it produces tar and other organic vapors which
combine with expelled moisture to form a black deposit called creosote which accumulates
on the flue lining. When ignited, this creosote makes an extremely hot fire. If the creosote
accumulation is large, a creosote fire in the chimney can damage the chimney and overheat
the surrounding wood framing. Creosote formation in a chimney can be minimized by
making sure there is always visible flame burning, avoid smouldering fires and by proper
refuelling techniques.
3.3.2 Chimney Maintenance
Regular chimney inspection and maintenance combined with proper operation will prevent
chimney fires. Keep your chimney clean. Do not allow more than 1/16" creosote build up in
your chimney. The amount of creosote will depend on variables such as frequency of use
and type of fire. We recommend that you
A. Initially inspect the chimney system weekly. From this, you will learn how often it will
be necessary to clean your chimney.
B. Have your chimney cleaned by a qualified chimney sweep. If you wish to clean it
yourself, we recommend using a stiff plastic or non-metallic brush. If a metal brush is
used, its size should be slightly smaller than the flue to avoid damaging the chimney. Do
not use a brush that will scratch the stainless steel interior of the chimney.
C. Do not expect chemical cleaners to keep your chimney clean. The rain cap can be
removed for inspection and/or cleaning of the chimney.

9
3.3.3 Top Baffle Removal Prior to Cleaning the Chimney
Before starting to clean your chimney, we recommend that you remove the top baffle to
avoid creosote dust collection at the top of the baffle. Follow these steps to set the top baffle
out of the way
1. Remove the side refractory holder. They are located at the top of the refractory.
2. Lift the front baffle.
3. Slide the back baffle under the front baffle. You now have access to the chimney.
3.3.4 Dealing with a Chimney Fire
Regular chimney maintenance and inspection can prevent chimney fires. If you have a
chimney fire, follow these steps
1. Close the fireplace door and the combustion air controls.
2. Alert your family of the possible danger.
3. If you require assistance, alert your fire department.
4. If possible, use a dry chemical fire extinguisher, baking soda or sand to control the fire.
Do not use water as it may cause a dangerous steam explosion.
5. Check outside to ensure that sparks and hot embers coming out of the chimney are not
igniting the roof.
6. Do not use the fireplace again until your chimney and fireplace have been inspected by a
qualified chimney sweep or a Fire Department Inspector.
3.3.5 Finish Door Casing Care
Use a glass cleaner and a soft cloth to polish the casing. Do not use abrasives such as steel
wool, steel pads or an abrasive polish for they may scratch the casing’s finish.
3.3.6 Ashes
Remove ashes only when the fire is out and the ashes are cold (24 to 48 hours after the fire is
out).

10
3.3.7 Refractory Replacement
The intense heat of the fire will normally cause hairline cracks in the refractory. These
cracks can be minimized by proper curing as described in "First fires". They will not
normally diminish the effectiveness of the refractory. If large cracks develop, then the
refractory should be replaced. To replace the refractory bricks, follow these steps
1. Remove the front refractories
2. Remove the bottom refractory
3. Remove the left side refractory
4. Remove the right side refractory
5. Remove the back refractory
6. Remove the front ceramic baffle
7. Remove the rear ceramic baffle
To install the new refractories, follow
the above steps in reverse.
Figure 2
3.3.8 Door Installation
The door must be installed only when
the installation of the BIS ULTIMA™
fireplace is completed. All you have
to do is fit the male part of the hinge,
already on the door, to the female
part, which is on the fireplace.
To remove the door, simply pull the
door up from the hinges.
The door adjustment has been set at
the factory. If the fit is still not
perfect, you can adjust the door using
the hinge screws.
Figure 3

11
3.3.9 Door Adjustment
The door may need to be adjusted to
be completely airtight. The gaskets’
air-tightness can be adjusted using the
adjustment screw located on the right
side of the fireplace façade. (An Allen
key #1/8 – not supplied - will be
necessary for this adjustment)
Figure 4
3.3.10 Glass Care - Replacement
The glass used for the BIS ULTIMA™ fireplace is a high temperature ceramic glass (1400°
F). If the glass breaks, it must be replaced with an identical ceramic glass. Tempered glass
or ordinary glass will not withstand the high temperatures of the BIS ULTIMA fireplace.
Replacement glass should be purchased from a Security Chimneys International dealer (see
“Replacement Parts”, page 34). Do not operate the unit with cracked or broken glass.
3.3.11 Glass Care - Cleaning
The BIS ULTIMA fireplace is designed to keep the glass clean under normal operating
conditions. If the BIS ULTIMA fireplace is operated continuously with the combustion air
controls closed, the glass will tend to get dirty unless the fuel, firebox and glass are
maintained at hot temperatures (see "Refuelling 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.
DO NOT USE CHEMICAL GLASS CLEANERS ON PAINTED SURFACES AS IT MAY
CAUSE THE PAINT TO PEEL.
CAUTION: Do not allow window cleaner to get in contact with door gasket or paint on the
facade. Once closed, contact of glass cleaner with the fireplace facade can provoke paint
peeling off.
3.3.12 Gasket Replacement
Remove the door from the unit (see page 10) 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 (a high temperature silicone caulking
rated at 500°F, 260°C, is suitable) 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 Dimensions
Around glass 69" 5/16" dia.
On door frame 73" 5/8" dia.

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3.4 FIREPLACE INSTALLATION
3.4.1 Locating the BIS ULTIMA ™
A. The best location to install your fireplace is determined by considering the location of
windows, doors, and the traffic flow in the room where the fireplace is located, allowing
space in front of the unit for the hearth extension and the mantel, and taking into
consideration the location of the hot air ducts (optional), outside air kit and chimney. If
possible, you should choose a location where the chimney will pass through the house
without cutting floor or roof joists (see fireplace dimensions page 13).
B. Usually, no additional floor support is needed for the fireplace. The adequacy of the
floor can be checked by first estimating the weight of the fireplace system. Weights are
given in the appendix. Next, measure the area occupied by the fireplace which is
normally 36" X 24 ½". Note the floor construction and consult your local building code
to determine if additional support is needed.
C. The BIS ULTIMA fireplace may be installed directly on the floor or on a raised base (for
proper guidelines, refer to "Hearth Extension Requirements") and a minimum of 6'8"
measured from the base of the appliance to the ceiling is required.
D. When selecting the location, the chimney outlet position and the direction of the wind are
important factor affecting the chimney performance. To allow a maximum draft and to
reduce wind turbulence, the chimney must
•Penetrate the highest part of the roof.
•Be installed as far as possible of roof offsets, trees or any other obstructions that
may cause wind turbulence and back drafts in the chimney.
•The least amount of offsets (elbows) possible.
Note a maximum of 2 offsets is allowed.

13
3.4.2 Hearth Extension Requirements
The BIS ULTIMA™ fireplace may be installed directly on a combustible floor; however, the
combustible floor in front of the fireplace must be covered with a non-combustible material
(tile, marble, stone, etc.). The supplied safety metal strip must be positioned as follows One
half under the front of the fireplace and the other half must extend on the floor over which
the hearth extension will be built (figure 5b).
* The safety metal strip must cover the entire width of the fireplace.
Figure 5a
Figure 5b
Elevated fireplaces (Figure 6)
Elevated fireplace installations require a special
‘Z’ metal safety strip (field provided), in place of
the safety metal strip shown on Figure 5b. The
safety strip should extend the full width of the
fireplace. When more than one safety strip is used
they must overlap by a minimum of 1″.
Hearth extension of an elevated fireplace must respect
the same minimal dimensions as a fireplace installed
directly on the floor (figure5a).
3.4.3 Framing, Facing and Mantel
The construction of the framing, facing, and mantel must be in accordance with the standards
and the following illustrations (figures 7 to 11)
A. Frame the fireplace using 2" x 3" or heavier lumber.
B. WARNING: Combustible materials cannot be used in the space directly above the
fireplace, except for the studs above the facade that support the facing and mantel. This
area must remain empty for a height of 6'8" (2032 mm) measured from the base of the
appliance.
Floor
Hearth extension
Non
-combustible
material
Safety metal strip
The crack between the
fireplace and the hearth
extension must be
sealed with a non-
combustible material
such as sand-cement
grout
Figure 6
‘Z’ safety strip
Fireplace

14
C. Frame the fireplace with vertical studs at the sides of the fireplace running from floor to
ceiling (see figure 8). If combustible facing is to be used, position the studs back, from
the front edge of the fireplace, a space the thickness of the facing material so that the
facing can be installed flush with the fireplace facing. Frame headers between the
vertical studs only as follows
- Place 2" x 3" or 2" x 4" headers, only along the upper part of the front, side and back
faces. Do not put wood or any combustible material within the area above the
fireplace except on the front facing.
-Place headers only as required to support the facing and mantel.
D. WARNING: The fireplace must not be in contact with any insulation or loose filling
material. Cover the insulation with drywall panels around the fireplace.
Figure 7
Figure 9
Figure 8
Figure 10

15
INSULATED CHASE CONSTRUCTION
Figure 11
Nailing Flanges
Four nailing flanges are provided to secure the
fireplace on the floor (see figure beside).
Bend the nailing flanges down so each flange
is flush with the floor, then using nails or
screws, secure the fireplace to the floor (2
places each side). The heads of the screws
must be large enough to cover the holes on the
nailing flanges.
Nailing flange
Unbend to floor
and nail/screw

16
Facing
1. Combustible material must be installed flush with the fireplace. It may not project in
front of and on the fireplace (i.e. the steel façade of the fireplace) (figure 12).
2. Non-combustible materials such as brick, stone or ceramic tile may project in front of
and onto the fireplace facing (figure 13).
Mantel
The mantel must be installed at least 45" (1143 mm) above the base of the fireplace (figure
12).
Figure 12
Figure 13

17
3. HOT AIR DUCTING INSTALLATION
Different hot air ducting systems can be installed with the BIS ULTIMA™
- Gravity kit
- Forced air kit
3.5.1 Gravity Kit
Double hot air outlet including: (See Fig.1 )
- 2 telescopic lengths 8" I.D.
- 2 90º elbows 8" I.D.
- 2 hot air outlet kits (grill and frames)
- 2 adaptors
NOTE : If the fireplace is vented using the AC chimney and the single hot air outlet is
installed, the chimney must be offset towards the back using 2 – 30 deg. elbows back to back on
the fireplace.
See components list page 33.
The only fan that can be used with the gravity kit is the UZY5.
The gravity kit allows you to block the upper louver of the fireplace. To do so, follow the
steps below
a) Remove the upper louver from the fireplace.
b) Install the black panel (BUCF) making sure that the insulation strip is installed inside.
c) The fireplace façade can be covered with non-combustible material (fig. 18).
WARNING: both pipes of the double hot air outlet must be installed. Any other
installation may cause fire and void warranty.
Figure 15
The safety rules for hot air ducting gravity kit installations are the following
Minimum height * 68" (1727 mm)
Maximum length See figure 16
The height of the louver must be measured from the base of the BIS to the middle point of
the louver.

18
When installing the double outlet system, the hot air outlets can be installed in the same room
as the fireplace, or one or both of the outlets can be installed in adjacent or upper rooms.
Installing the ducts at different elevations will tend to exhaust more heat out of the higher
outlet (figure 16).
Figure 16
Figure 18