RSF Woodburning Fireplaces DELTA FUSION User manual

RSF-IIDF_2016-0710
Industrial Chimney Company Inc.
400 J.-F. Kennedy, St-Jerome, QC, Canada, J7Y 4B7
Telephone: [phone]
www.icc-rsf.com
Owner's Manual
Residential Factory Built Fireplace
Operation • Maintenance • Installation
DELTA FUSION
Keep these instructions for future use.

DELTA FUSION Owner's Manual 2 RSF Woodburning Fireplaces
Dear Customer,
The DELTA FUSION incorporates technology with elegance to give you a beautiful view of the
fire without compromising on heating efficiency or environmental quality.
We have designed your new DELTA FUSION to be easy to install, operate and maintain. It is in
your best interest to become familiar with it. Study your manual to be sure that the installation is
correct, and then follow the guidelines for operation and maintenance.
We at RSF Woodburning Fireplaces congratulate you on your choice of the DELTA FUSION,
and are confident that you have purchased a fireplace that is simply, the best.
Sincerely,
RSF Woodburning Fireplaces TEAM
July 2016
TABLE OF CONTENTS
SAFETY FIRST 3
DO'S AND DONT'S3
CREOSOTE:FORMATION AND REMOVAL 3
GENERAL SPECIFICATIONS 4
THE COMBUSTION CONTROL SYSTEM 4
OPTIONS 4
UNIT DIMENSIONS AND CLEARANCES 5
OPERATION 7
AIR CONTROL 7
IMPROVING EFFICIENCY 7
IMPORTANCE OF DRAFT 7
BURN TIME VS HEAT OUTPUT 7
FUEL 7
FIRST FIRES 8
LIGHTING 8
ADJUSTING THE BURN RATE 8
REFUELING 8
TROUBLESHOOTING PROBLEMS 8
MAINTENANCE 9
CHIMNEY CLEANING 9
DISPOSAL OF ASHES 9
GENERAL CLEANING 9
GLASS CLEANING 10
PAINT 10
DOOR ADJUSTMENT 10
TOP AND BOTTOM LOUVERS REMOVAL AND
ADJUSTMENT 10
SIDE DECORATIVE FACINGS REMOVAL AND
ADJUSTMENT 11
INSTALLATION 12
MOVING THE DELTA FUSION 12
LOCATION 12
CEILING CLEARANCE 12
SECURING THE FIREPLACE IN PLACE 12
FRAMING GUIDES INSTALLATION 15
FRAMING 15
OUTSIDE AIR DUCT 16
CHIMNEY 16
CHIMNEY INSTALLATION 17
OFFSET CHIMNEY 19
CHASE ENCLOSURE 19
MASONRY CHIMNEY 20
FINISHING AROUND THE FIREPLACE 21
HEARTH EXTENSION 21
BENEATH HEARTH EXTENSION 21
MANTEL 22
REFRACTORY BRICK INSTALLATION 22
LISTING LABEL 23
COMPLETE OPTIONS LIST 24
REPLACEMENT PARTS 25
LIMITED WARRANTY 27

DELTA FUSION Owner's Manual 3 RSF Woodburning Fireplaces
SAFETY FIRST
DO'S AND DONT'S
If this fireplace is not properly installed, a house fire could result. For your safety, follow the installation
directions. Contact your local authority having jurisdiction (such as municipal building department, fire
department, fire prevention bureau, etc.) regarding restrictions and installation requirements, and the need
to obtain a permit.
To ANYONE using this fireplace: these DO's and DO NOTs are for your safety.
1. DO read this instruction manual before lighting your first fire.
2. DO burn seasoned wood fuel or a combination of densified fuel logs and wood fuel.
3. DO operate the fireplace with the door fully closed. If the door is left partly open, gas and flame can be
drawn out of the fireplace opening, creating both fire and smoke hazards.
4. DO keep all combustible materials (furniture, firewood, etc.) at least 4' away from the front of the fireplace.
5. This fireplace needs periodic inspection and repair for proper operation. DO learn to properly use it and maintain
it.
6. DO have at least one smoke detector on each level of the house and at least one carbon monoxide detector.
7. DO read the section about MOVING THE DELTA FUSION before you begin the installation.
8. To avoid glass breakage, DO NOT slam the fireplace door.
9. DO NOT ever use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter fluid or similar liquids to start
or freshen up a fire in this fireplace. Keep all such liquids well away from the fireplace while it is in use.
10. DO NOT overfire the fireplace. If you are unable to slow down the burn rate of the fire or if the chimney
connector behind the top louver glows red, you are overfiring the fireplace.
11. DO NOT use a fireplace grate or other products not specified for use with this fireplace.
12. The burn rate is set by the automatic air control at the factory. DO NOT tamper with the air control. DO NOT
install a flue damper that would allow you to reduce the chimney draft and thus slow the minimum burn rate.
13. To avoid damaging the fireplace, DO NOT operate it in a manner inconsistent with the operating instructions in
this manual.
NOTE: We strongly recommend that our products be installed and
serviced by professionals who are certified by the National Fireplace
Institute in the U.S. or by Wood Energy Technology Transfer Inc. in
Canada.
CREOSOTE: FORMATION AND REMOVAL
When wood is burned slowly, it produces tar and other organic vapors which combine with the expelled moisture
from the wood to form creosote. The creosote vapors can condense in the relatively cool chimney of a slow burning
fire. When ignited, this creosote makes an extremely hot fire. The chimney should be inspected periodically during
the heating season to see if a creosote build-up has occurred. If a significant layer of creosote has accumulated
(1/4" or more), it should be removed to reduce the risk of chimney fire.
❖WARNING: BURN DRY WOOD ONLY. DO NOT BURN: DRIFTWOOD, TREATED WOOD,
COAL, GARBAGE, OR PLASTIC.
Do not use construction scraps (e.g. 2x4 or plywood scraps) as your only supply of fuel as you can overheat and
seriously damage the fireplace. Do not use more than one wax fuel log (e.g. Duraflame) at a time. Use only firelogs
that have been evaluated for fireplace use. In Canada, they should meet the requirements of ULC/ORD-C127-
M1990. Refer to the firelog warnings and caution markings prior to use.

DELTA FUSION Owner's Manual 4 RSF Woodburning Fireplaces
GENERAL SPECIFICATIONS
The DELTA FUSION fireplace offers more than 500 sq. inches of pure fire viewing which defines it as a "Fireplace"
under the United States Environmental Protection Agency (EPA) 2015 regulations.
It is also environmentally friendly, and meets the 2020 United States Environmental Protection Agency (EPA)
particulate emission standard with crib wood at an emission rate of 1.3 grams per hour.
The DELTA FUSION has an efficiency of 60%. This has been established using the higher heating value of the
wood, using data from a crib wood EPA emission test and using CSA B415.1-10 calculations.
It has been shown to deliver heat ranging from 40 000 to 95 000 BTU/h with an average of 70 000BTU/h. Please
refer to the "Improving efficiency", the "Importance of draft", the "Burn Time vs Heat Output" and the "Fuel" sections
to better understand the various factors that influence the efficiency and heat output of your fireplace.
THE COMBUSTION CONTROL SYSTEM
Since the door is sealed, air for combustion comes through the DELTA FUSION's air control. The draft control is an
assembly that increases or reduces the amount of air permitted into the firebox. A bi-metallic coil in the air control
allows more air when the unit is cold, and less air when the unit is hot, guarding against overheating. The air control
is fully automatic; there is no user access to the air control.
Control the fire as you would any normal fireplace, using one or two logs at a time for a smaller fire, or more logs
for more heat. Remember: when the fireplace is hot, the automatic air control will reduce the combustion air inlet
since the bi-metallic coil will shut the air control damper part way.
OPTIONS
Rock Retainer Kit
To simplify the installation of thin non-combustible materials such as ceramic tile or sliced brick, we have designed
a rock retainer kit (FO-KD3). It is not designed or required for full brick or stone. The rock retainer kit is composed
of metal lath and a metal finishing edge to provide texture to the facing of the fireplace, improving the hold of mortar.
Internal Blower
For increased air circulation and marginally more heat output, you can add the Circulating Internal Blower (FO-
FDHB5-N) to your DELTA FUSION.
Gravity Vent
Gravity vents distribute hot air through ducts connected to the top of the fireplace and do not require a blower. If
you have any rooms directly above or adjacent to the room with the fireplace that you would like to heat, you may
want to consider the Gravity Vent Kit (FO-V2). You can install one or two gravity vent kits. If you chose to install
only one, we recommend installing it on the left side. If you prefer a different look for your gravity vent(s) you can
change the grill(s) for a contemporary vent grill (FO-VGC).
Central Heat Blower
To maximize the distribution of the heat generated by your DELTA FUSION fireplace throughout many rooms and
different floors, consider the Central Heat Option. With our Central Heat Blower (FO-FDHB6-1), you can connect to
existing central heating ducts or run dedicated ducts to circulate the fireplace heat to one or many rooms. The
Central Heat Control (FO-FDHC6) will automatically control the Central Heat Blower via a wall thermostat and
thermal switch. The Zone Heat Control (FO-FDHCZ1) along with Zone Damper Kits (FO-FDHCZ2) will provide the
same features as the Central Heat Control but for more than one heating zone.
NOTE: Many options require wiring and/or electricity for their installation. If there is any chance that any of these
options will be installed in the future then suitable wiring should be run during framing. Otherwise, it will be difficult
to install these options later.
Detailed installation instructions are included in the box with each option. These can also be obtained from our
Internet Web Site: www.icc-rsf.com.

DELTA FUSION Owner's Manual 5 RSF Woodburning Fireplaces
UNIT DIMENSIONS AND CLEARANCES
For the side wall clearance
Distance from the fireplace
side standoff to the side of the
firebox opening:
13 ½"
For the mantel shelf
clearance
Distance from the fireplace
base to the top of the firebox
opening:
28 3/4"
Figure 1 Unit Dimensions and Clearances

DELTA FUSION Owner's Manual 6 RSF Woodburning Fireplaces
Table 1 Unit Dimensions and Clearances
A
Distance of combustible material from side and back standoffs, and the base of
the fireplace
0"
(0,0 mm)
B
Minimum distance of side wall to the side of the firebox opening.
24 ½"
(622 mm)
C
Ceiling clearance: from the base of the fireplace to the ceiling above the
fireplace. Applies inside and outside the fireplace enclosure.
7'
(2,13 m)
D
Minimum chimney height: minimum total chimney height from fireplace top to
below the chimney rain cap (chimney height increases with offsets and altitude,
refer to “Chimney” section for details).
12'
(3,66 m)
E
Maximum chimney height: maximum total chimney height from fireplace top to
below the chimney rain cap.
40'
(12,19 m)
F
Maximum chimney height supported by the fireplace.
16'
(4,88 m)
G
Minimum depth of non-combustible hearth extension: from the front of the
fireplace.
18"
(457 mm)
H
Minimum width of non-combustible hearth extension: total width, must be
centered on firebox opening.
36"
(914 mm)
I
Minimum width of the spark guard.
23 ¾"
(603 mm)
J
Maximum mantel shelf depth.
12"
(305 mm)
K
Minimum height of a combustible mantel above the top of the door opening:
from the highest point of the top of the door opening to below the combustible
mantel (refer to the "INSTALLATION: Mantel" section for particulars).
24"
(610 mm)
L
Minimum distance of combustible materials above the fireplace facing from the
firebox opening (other than the combustible mantel shelf, see J and K above):
includes framing and wall surface.
38 ½"
(978 mm)

DELTA FUSION Owner's Manual 7 RSF Woodburning Fireplaces
OPERATION
AIR CONTROL
The bi-metallic coil is a unique feature built into your DELTA FUSION fireplace. It serves as a fully automatic
combustion air control.
As the fireplace heats up, it will activate the bi-metallic coil. This will automatically begin to shut down the air entering
the firebox, slowing the combustion process. This will save you wood, reduce emissions, improve efficiency, and
prevent the fireplace from overheating and causing potential damage to the firebox.
IMPROVING EFFICIENCY
The location of your fireplace will affect how efficiently it heats the home. Your fireplace should be located in part of
the house you want to be the warmest. Trying to heat the main floor with a fireplace in the basement will generally
overheat the basement and waste fuel. Certain RSF options offer the ability to move heat from the main floor to the
basement. This allows you to efficiently heat your primary space while also heating the basement as a secondary
space.
The efficiency will also be influenced by the draft in the chimney which will be influenced by various factors (refer
to "Importance of draft" below) and by the amount of wood burning at any point (see "Burn Time vs Heat Output"
below). The efficiency will also be influenced by the quality of the wood (refer to "Fuel" below).
All of these factors must be taken into account and optimize so you can recover the maximum heat from your
DELTA FUSION.
IMPORTANCE OF DRAFT
Draft is the natural force which pulls air from the fireplace up the chimney. The strength of draft in your chimney
depends on a variety of factors, including chimney height, nearby obstructions, altitude, etc.
Excessive draft can result in a hotter fire than intended or reduced burn times as more air is pulled through the
fireplace. It will also result in less heat recovery since the heat will not have as much time to radiate into the room
before being sucked into the chimney.
Weak draft can result in smoke entering the room and difficulty lighting or operating the fireplace. Weak draft is
often incorrectly associated as a blockage in the air intake for the fireplace. Adding chimney height is the most
common solution. See Table 2 for minimum chimney height recommendations.
BURN TIME VS HEAT OUTPUT
The faster your fireplace burns the more heat it will create; however, faster fires result in much more hot air flow up
the chimney which means you are sacrificing efficiency. Fast burning fires (lots of air) go through much more wood
than slow burning fires. The DELTA FUSION burns at a fixed rate depending on the heat inside the firebox. It will
burn quickly during light up and then gradually slow down to offer the best efficiency and emissions reduction.
FUEL
All modern high efficiency fireplaces and woodstoves are designed to burn best with seasoned cordwood. Seasoned
wood can be defined as wood that has been cut, split and let dry under cover for a minimum of 6 months, preferably
a year or more. Dry seasoned wood generally contains less than 20% moisture content. Attempting to burn fuel
with a high moisture content will be difficult and result in lower efficiency, increased creosote buildup and dark
deposits on the glass. It is possible to burn a very large amount of wood, and get very little heat if the wood is wet.
The type of wood you select is also important. All types of wood give off more or less the same number of BTU’s
per pound. Since softer woods are less dense than hardwoods it is possible to put more weight of hardwood in the
firebox; in other words all woodburning appliances will burn longer and more evenly with hardwoods. Never burn
scrap, garbage, treated wood or driftwood as they produce much more pollution and can corrode the firebox and
chimney as well. Burning large amounts of paper, cardboard, mill ends or construction waste can easily over fire
and damage the fireplace or even ignite a chimney fire if the flue is dirty.

DELTA FUSION Owner's Manual 8 RSF Woodburning Fireplaces
FIRST FIRES
You will experience a very slow start-up during the first few fires and it may be difficult to close the door at first. The
refractory bricks contain moisture from manufacturing and require a few hot fires to evaporate the moisture. While
moisture remains in the bricks, there will be black with smoke deposits on them. When the moisture has dissipated,
the bricks will turn white. Unlike cast iron stoves, there is no need to cure the fireplace itself by starting with small
fires and progressively larger ones. Feel free to light a large fire from the very start.
You will experience an odor during the first few fires. This odor comes from curing paint and oil burning off the
metal. The odor may be strong enough to set off your smoke detector. Open the doors and windows to allow the
room to properly ventilate.
LIGHTING
Start by laying your fire starter and kindling. Traditional fire starter is crumpled newspaper; make sure to use enough
to light the kindling (5-6 pieces should do). Next lay 3 or 4 layers of kindling crisscrossed over the newspaper. Using
plenty of kindling ensures that the chimney will heat up quickly and establish a strong draft, never use any
flammable liquids. Light the paper and close the door most of the way, but don’t shut it completely, keep it about
1" from being completely closed. If the door is positioned correctly you will see air rushing into the fireplace, this will
help the lighting process.
Once the kindling is lit and sustaining fire, you can add some small pieces of seasoned cordwood. Use the andirons
in front to help position the cordwood so as not to flatten and smother the fire you’ve just created. Always add at
least 3 pieces of cordwood. Position your cordwood in a manner that the fire will hit several pieces as it rises and
has air gaps to flow through. Continue to leave the door slightly open until the cordwood is lit, about 3-5 minutes.
Close the door completely when the fire is established.
During light up, it is normal for the glass to accumulate some soot and become dark. As the fireplace heats up, this
should burn off and reveal a nice view of the fire.
❖WARNING: DO NOT USE A GRATE OR ELEVATE THE FIRE.
ADJUSTING THE BURN RATE
The DELTA FUSION is designed to optimize efficiency at all times. Since there are no user controls to adjust the
burn rate, the easiest method is to learn how many logs you need at a time for the amount of heat you require. In
addition to the amount of wood and the size of the logs, take the time the experiment with split and unsplit logs (split
logs will burn faster than unsplit logs) as well as placing the logs parallel or perpendicular to the door (perpendicular
will burn faster than parallel). You will soon discover that having no user control for the burn rate is not a limitation.
REFUELING
Have your next wood load ready when you open the door. The temperature in the firebox will decrease as the door
is open, so decreasing the amount of time the door is open will allow the firebox to remain hot. Do not rush.
Turn off the central heat and/or internal blowers, if installed. The blowers may cause smoke to spill out of the
fireplace if they are running.
The door should be opened slowly to keep smoke from spilling into your room. If you have a problem with smoke
spillage, check to see that all kitchen and bathroom fans have been shut off. They can cause negative pressure in
the house which pulls smoke out of the fireplace.
Take the time to poke and stir the unburnt wood that is left in the firebox. This will help revive the fire. Place the
new logs in the firebox. Try to maintain a clear path in front of the pilot, which is the metal tube centered between
the two andiron posts. The pilot brings an influx of air close to the coals that will help to keep the fire going. Once
the new wood has been loaded, keep the door slightly ajar for about 3-10 minutes to get the fire going depending
on how well seasoned is your cordwood and how much coals were left in the firebox. Once the new wood it well lit,
close the door.
TROUBLESHOOTING PROBLEMS
If smoke comes into the house when the door is opened:

DELTA FUSION Owner's Manual 9 RSF Woodburning Fireplaces
•You may have opened the door too quickly and created a suction of air into the room, this can be avoided by
opening the door more slowly.
•Ensure your chimney is clean and your chimney cap is not plugged. Chimney caps with screens are more likely
to become clogged with creosote buildup.
•Make sure you have adequate chimney height for your system. Refer to the "Chimney" section of this manual
and make sure to take altitude, and number of elbows into consideration.
•If you have purchased the central heat kit option or the circulating internal blower, make sure the blower is off
before opening the door.
•Check to see if other fans in the home are running, particularly a kitchen range hood, or bathroom exhaust fan.
This can affect the pressure in the home.
•Try opening a window near the fireplace a little, this will equalize the pressure in the home and should correct
a draft problem. Once proper draft is established the window can be closed.
•Make sure you’ve used enough kindling to establish a hot fire quickly. The most likely time that smoke will enter
the home is during the lighting process.
If your fireplace burns excessively fast, seemingly uncontrollably:
•Check all door seals and gaskets to ensure that air is not leaking into the firebox. See “Door Adjustment” for
details of how to verify the tightness of the door.
•Inspect the secondary air tubes in the top of the fireplace to ensure they are in good condition. An unwanted
hole in the secondary air tubes can bring additional unwanted air into the fireplace.
MAINTENANCE
CHIMNEY CLEANING
Check the chimney for creosote buildup every week or so until experience shows how often you need to clean it. A
buildup of ¼" or more should be cleaned before more creosote accumulates. Close the fireplace door(s) prior to
sweeping. Use an 8" round brush.
The baffle in the firebox can be pulled forward or completely removed to gain better access to the flue from below.
Whether you decide to remove it or pull it forward, great care should be given not to damage the back secondary
air tube with the sweeping brush or while moving, removing and/or reinstalling the baffle.
To pull the baffle forward, simply pull it over the front secondary air tube.
To remove the baffle, first remove the front secondary air tube. Simply unscrew the secondary air tube on the left
side, slide the tube toward the right until the left end drops out of its hole. Slide the tube back towards the left to get
the right end out of its hole. To remove the baffle, push up and slide it off the brackets.
Do not forget to replace both the baffle and the secondary air tube if you removed them and be sure to have the
holes on the secondary air tube facing toward the front and the screw back in place.
DISPOSAL OF ASHES
Remove the ashes before they become too deep, before you have a spillage problem when you open the door.
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, well away from all combustible materials pending final disposal.
If the ashes are disposed of by burial, or otherwise locally dispersed, they should be retained in the closed container
until all cinders have thoroughly cooled.
GENERAL CLEANING
The high heat paint can be cleaned with a soft damp cloth. Use a mild detergent and water. Do not use abrasive
cleaners.

DELTA FUSION Owner's Manual 10 RSF Woodburning Fireplaces
GLASS CLEANING
In a controlled combustion firebox, temperatures are not always high enough to keep the glass perfectly clean. A
good hot fire once a day usually cleans off most of the deposits that have accumulated. Remember: the drier the
wood, the cleaner the glass. A word of caution: although heat will not break the glass, impact can. Be careful not to
hit the glass.
❖WARNING: NEVER CLEAN THE GLASS WITH AN ABRASIVE CLEANER. USE ONLY A CLEANER
RECOMMENDED BY YOUR DEALER. NEVER CLEAN THE GLASS WHILE IT IS HOT, A SERIOUS BURN CAN
RESULT. THERE ARE A NUMBER OF EXCELLENT WOOD STOVE GLASS CLEANERS AVAILABLE WHICH
ARE FAR SUPERIOR TO REGULAR GLASS AND OVEN CLEANERS FOR WOOD STOVE APPLICATIONS.
PAINT
❖WARNING: AVOID SPRAYING CERAMIC GLASS CLEANER OR OTHER CLEANERS ON THE PAINT OF
THE FIREPLACE. THEY MAY REMOVE THE PAINT AND MAKE TOUCHUPS DIFFICULT.
You can touch up the face of the DELTA FUSION with Stove Bright Metallic Black high temperature paint which is
available at most fireplaces dealers. Follow the directions outlined on the spray can. DO NOT attempt to paint the
fireplace while it is still warm. Keep the spray can away from any source of heat or open flame. Ensure that there
is adequate ventilation in the room from the time you start painting until the paint is dry. Stove Bright is available in
a wide range of colors if you want to change the color of your DELTA FUSION.
We recommend that you take the time to protect or remove any item that you do not want to paint such as: the door
glass, the plated door, the fireplace surroundings, etc. The glass can be removed from the door but you will have
to replace the gasket.
DOOR ADJUSTMENT
To check for a proper door seal, insert a thin sheet of paper between the door and the front of the fireplace and
latch the door. Pull gently but firmly on the sheet of paper. If there is resistance on the paper, the adjustment is
correct. Repeat this procedure along all sides of the door.
The most important factor for controlling the burning rate of the DELTA FUSION is a good seal on the door gasket.
If the door gasket is worn or damaged to the point where the seal is not adequate as described above, then remove
and replace the gasket. Replacement kits are available from your RSF dealer.
To ensure a proper seal on the latch side, you can adjust the tightness of the door against the front of the fireplace
as follows:
1. Open the door and turn the handle 360° counterclockwise. Beware not to over tighten the door latch; this will
result in premature failure of the door gasket or cause undue stress on the door handle.
2. Verify the seal with the sheet of paper as described above.
If needed, the hinges can be adjusted to improve the alignment of the door latch with respect to the hole in the
fireplace facing, and for easy installation/removal of the door.
NOTE: An improperly adjusted door seal can have a significant effect on the performance and durability of the
fireplace. A poorly adjusted door can result in reduced efficiency, over firing, excessive wood consumption and
premature fireplace failure.
TOP AND BOTTOM LOUVERS REMOVAL AND ADJUSTMENT
The top and bottom louvers are held in place by two screws located at the top right and left corners of each louver
(see Figure 2). They also have hooks at the bottom of each louver so that when you remove the screws they will
not fall down.
The hole through which the screws hold each louver in place is oblong, allowing for some left to right adjustment to
better align with the door frame.

DELTA FUSION Owner's Manual 11 RSF Woodburning Fireplaces
SIDE DECORATIVE FACINGS REMOVAL
AND ADJUSTMENT
Each side decorative facing is held in place by four
bolts: two at the top and two at the bottom (see Figure
2). They are not visible from the front of the fireplace.
They are only accessible from behind the side
decorative facings. To gain access to the four bolts,
the top and bottom louvers need to be removed.
To adjust the position of a side decorative facing, just
loosen all four nuts, one on each bolt. Make sure to
tighten all four nuts once the side decorative facing is
in its proper position.
To remove the side decorative facing, just remove the
four nuts and pull the entire panel forward. Be careful
the panel is quite heavy and could crush toes or
damage wood flooring is dropped.
Figure 2 Top Louver, Bottom Louver and Side
Decorative Facings Attachment

DELTA FUSION Owner's Manual 12 RSF Woodburning Fireplaces
INSTALLATION
Check with your local authority having jurisdiction (such as municipal building department, fire department, fire
prevention bureau, etc.) regarding restrictions and installation requirements, and the need to obtain a permit.
Remove the fireplace door. Store it in a safe place until the installation and finishing work is finished. Side windows
must be adequately protected.
MOVING THE DELTA FUSION
The fireplace weighs about 650 lb (295 kg) as shipped. It is possible to reduce the moving weight of 40 lb (18 kg)
by moving the fireplace without its crate, of another 130 lb (60 kg) by removing the refractory bricks and of an
additional 25 lb (12 kg) by removing the baffle.
We recommend using a furniture dolly to move the fireplace. Simply remove the top and bottom louvers as well as
the door to be able to attach the fireplace to the dolly with a strap around the fireplace. Do not elevate the fireplace
and dolly beyond a 45° angle to move.
NOTE: If using an Eskelera a 2 x 4 will have to be placed between the two forks before using.
LOCATION
Your DELTA FUSION fireplace may be installed in many different ways (see Figure 3) without any special floor
reinforcement. We recommend that you take the time to plan your entire installation (fireplace, chimney, and
options) before beginning the actual installation (refer to Figure 4).
Dimensions of the fireplace along with clearances are shown in Figure 1 and Table 1.
❖WARNING: IF THIS FIREPLACE IS NOT PROPERLY INSTALLED, A HOUSE FIRE CAN RESULT. FOR
YOUR SAFETY, FOLLOW THE INSTALLATION INSTRUCTIONS AND CLEARANCES. DO NOT PACK
REQUIRED AIR SPACES WITH INSULATION OR OTHER MATERIALS.
1. Note the location of roof and floor joists. Try to choose a location that does not require cutting them.
2. If at all possible, run the chimney up through the inside of the house. If it must be run outside, it should be
enclosed in an insulated enclosure (see Installation: Chase Enclosure). Remember, a cold chimney causes
poor draft.
CEILING CLEARANCE
Ceiling clearance is the distance from the base of the fireplace to the ceiling.
Under no circumstances should the distance between the ceiling firestop and the base fireplace be less than the
dimension specified in Table 1 (C).
SECURING THE FIREPLACE IN PLACE
The fireplace MUST be attached to the floor.
Using the four small brackets that were securing the fireplace to the crate, attach the casing or base of the fireplace
to the floor. Position the brackets all around the fireplace in the same fashion as they were on the crate. If possible,
try to have at least one of the brackets screwed into the floor joist with 2" wood screws.

DELTA FUSION Owner's Manual 13 RSF Woodburning Fireplaces
The framing dimensions are larger than required for ease of installation.
Use the provided framing guide to frame at 90° against the side of the fireplace. Use the optional 45° framing
guide (FO-FDS45) if you want to finish the wall as a continuity of the angled facing. See "Framing Guides
installation" section for more information regarding both framing guides.
Figure 3 Framing Examples
18 3/8"
55 5/8"
39 1/4"
49"
14 1/4"

DELTA FUSION Owner's Manual 14 RSF Woodburning Fireplaces
Figure 4 General Installation
Rain Cap
Storm Collar
Flashing
Radiation Shield with a
Storm Collar in the Attic
Ceiling
Radiation Shield
Hearth Extension and
Beneath Hearth Extension
(refer to text for particulars)
Outside Air Inlet (refer to text for particulars)
The framing and wall
surface directly above the
fireplace must be
non-combustible.
(grayed area, see Table 1
(L) and text for particulars)
Cold air trap (optional)
Electrical and Gas Knock-Outs
❖WARNING: The framing
and the wall surface directly
above the fireplace must be
non-combustible (grayed
area, see Table 1 (L) and text
for particulars).

DELTA FUSION Owner's Manual 15 RSF Woodburning Fireplaces
FRAMING GUIDES INSTALLATION
Provided with the fireplace are two 90° framing
guides that need to be installed one on each
side of the fireplace facing. Simply remove the
four (4) screws on the side of the facing and use
them to attach the framing guide as shown in
(see Figure 5).
The optional 45° framing guide (FO-FDS45) is
installed in the same manner as the 90° framing
guide. Just make sure to line up the 45° framing
guide with the fireplace to ensure facing will be
flush.
The framing goes behind the framing guide
while the drywall goes in front.
FRAMING
The wall above the fireplace needs to be framed
in steel studs to at least the height defined in
Table 1 (L). With the fireplace, we provide a
channel for the steel studs that is installed on
top of the fireplace; the steel studs necessary to
frame above the fireplace up to 97" from the
base of the fireplace and the channel necessary to attach the steel studs to the ceiling (see Figure 6).
The provided steel studs can be cut shorter or be replaced with longer ones if necessary.
The channels have pre-drill holes that correspond to the
center width of each steel studs. The two angled sides are
framed ready to accept the gravity vent grill adapter if you
decide to install the gravity vent option.
The rest of the enclosure walls (side(s) and back) can be
framed with any suitable materials (2x4 or 2x6 studs,
plywood, gypsum board, etc.).
Make sure to respect all combustible materials clearances
specified in Table 1.
90° Framing Guide
Optional 45° Framing
Guide (FO-FDS45)
Figure 5 Framing Guide Installation
Figure 6 Framing above the Fireplace

DELTA FUSION Owner's Manual 16 RSF Woodburning Fireplaces
OUTSIDE AIR DUCT
If an outside air duct is required in your jurisdiction,
connect the outside air inlet to the outside after the
fireplace is correctly positioned (see Figure 7).
Use an insulated aluminum flexible duct. The duct
should not exceed 12' vertical rise above the base of
the unit.
The air inlet should be at least 5’ lower than the top
of the chimney flue and must never terminate in
attic spaces.
A 4" diameter duct can be used if the total duct run is
less than 25'. For longer runs, use 5" diameter duct.
Both 4" and 5" connecting sleeves are provided with
the fireplace.
1. Find a convenient location for the combustion air
duct and outside air inlet. The outside air inlet can
be above or below floor level.
2. Make a 4 ¼" (5 ¼" if using a 5" diameter duct) hole
in the outside wall of the house. Push the outside
air inlet in from the outside. Seal the joint between
the air inlet and the outside wall with an appropriate sealant.
3. Place the insulated flexible duct over the round sleeve on the outside air inlet. At both ends, carefully pull back
the insulation and plastic cover, exposing the flexible duct. Then at each end, attach the duct with metal screws
to the inlet and tube. Carefully push the insulation and cover back over the duct. Tape the plastic cover in place
with 2" aluminum duct tape.
❖CAUTION: WHEN RUNNING THE DUCT AROUND CORNERS, BE SURE TO PREVENT CRIMPING THE
DUCT THAT WOULD RESTRICT THE COMBUSTION AIRFLOW.
CHIMNEY
This fireplace is certified for use with 8" ICC Model EXCEL chimney only. Please refer to Table 1 (D-E) for the
minimum and maximum chimney height permitted with the DELTA FUSION fireplace.
We recommend that the minimum height be increased by approximately 6" for every 1000' elevation above sea
level. Every 15°, 30° or 45° offset (one pair of elbows) also increases the minimum height. See Table 2 for more
precise recommended flue heights.
For example, if you are living 6015' above sea level, your chimney should terminate at least 15' from the top of the
fireplace if it is a straight chimney or at least 18'6" if one 30° offset is used as shown in Table 2.
Figure 7 Outside Air Connection and Installation
Example
Above Floor
Example Below Floor
Example
RSF
Fireplace
RSF
Fireplace
RSF
Fireplace
2" Aluminium
Duct Tape
Insulated Flexible Air Duct
Outside Wall
Outside Air
Inlet

DELTA FUSION Owner's Manual 17 RSF Woodburning Fireplaces
Table 2 Minimum Recommended Flue Heights
Elevation (ft)
Number Of Offset
Straight
Chimney
1 x 15°
2 x 15°
1 x 30°
2 x 30°
1 x 45°
2 x 45°
0 - 1000
Minimum
12’
13’
14’
15’
18’
16’
20’
1001 - 2000
12’6”
13’6”
14’6”
15’6”
19’
16’6”
20’
2001 - 3000
13’
14’
15’
16’
19’6”
17’
21’6”
3001 - 4000
13’6”
14’6”
15’6”
17’
20’
18’
22’6”
4001 - 5000
14’
15’
16’
17’6”
21’
18’6”
23’
5001 - 6000
14’6”
15’6”
17’
18’
21’6”
19’
24’
6001 - 7000
15’
16’
17’6”
18’6”
22’
20’
24’6”
7001 - 8000
15’6”
16’6”
18’
19’
23’
20’6”
25’6”
8001 - 9000
16’
17’
18’6”
20’
24’
21’
26’6”
9001 - 10000
16’6”
17’6”
19’
20’6”
24’6”
22’
27’
Flue height is measured from the top of the fireplace to the top of the chimney before installing the rain cap.
If you have two different offsets (two pairs of different elbows), simply use the column for two offsets of the
biggest pair of elbows at your elevation to get your Minimum Flue Height.
CHIMNEY INSTALLATION
Make sure to read the EXCEL Chimney installation
manual concerning requirements for supports,
bracing, anchors, etc. The EXCEL installation manual
is available from your dealer or from our web site:
"www.icc-rsf.com". Refer to Table 1 (F) for the
maximum chimney height that can be supported by
the top of the fireplace.
❖WARNING: THE CLEARANCE BETWEEN THE
CHIMNEY AND COMBUSTIBLE MATERIAL MUST
BE 2" OR MORE. DO NOT FILL THIS AREA WITH
INSULATION.
1. Cut and frame the required holes in the floor(s),
ceiling(s) and roof where the chimney will pass
through. The rough opening in the framing is 14"
square (the opening can be slightly bigger, up to
14 ½", but NEVER smaller).
2. From below, install a radiation shield in each floor
through which the chimney passes. At the attic
level, install a radiation shield and a storm collar
as shown in Figure 8.
❖WARNING: A RADIATION SHIELD MUST BE
INSTALLED AT EACH FLOOR WHERE THE
CHIMNEY PASSES THROUGH.
Figure 8 General Chimney Installation
Radiation
Shield
Rain Cap
Flashing with
Storm Collar 3' min.
10'
2' min.
Storm Collar
in the Attic
Ceiling
Clearance (see
Table 1 (C))
The chimney
must be enclosed
when it passes through
living spaces: min.
clearance of 2" with
chimney
2" min.
NOTE: Openings
must be framed to
adequately support
any chimney
supports and roof
assemblies
❖WARNING:
DO NOT PACK
REQUIRED AIR
SPACES WITH
INSULATION OR
OTHER
MATERIALS ❖WARNING:
MAJOR RISK
OF FIRE,
LOOSE FILL
INSULATION
MUST NOT GO
ABOVE THE
RADIATION
SHIELD AND
MUST NEVER
COME IN
CONTACT
WITH THE
CHIMNEY
RSF
Fireplace

DELTA FUSION Owner's Manual 18 RSF Woodburning Fireplaces
3. Place the first chimney length on the fireplace. Secure the chimney length to the fireplace with the three screws
provided.
The chimney must extend at least 3' above its point of contact with the roof and at least 2' higher than any wall,
roof, or building within 10' of it. If the chimney is higher than 5' above the roof, it must be secured using a roof
brace.
4. At the roof, install a roof radiation shield. The roof radiation shield must be installed so it extends 1" above the
roof line.
5. Put the roof flashing into place.
•If the chimney is enclosed to the roof: use a vented flashing
•If the chimney is not enclosed to the roof: use a regular flashing.
6. Seal the joint between the roof and the flashing with roofing tar. For sloping roofs, place the flashing under the
upper shingles and on top of the lower shingles. Nail the flashing to the roof using roofing nails.
7. Place the storm collar over the chimney and flashing. Seal it around the chimney with silicone sealer (DO NOT
use roofing tar).
8. Fit the rain cap on the chimney. Secure it tightly in place.
Figure 9 Offset Chimney Installation Example
Figure 10 Offset Chimney Through a Wall Example
Radiation
Shield
Use Offset
Support or
Roof Support
RSF
Fireplace
Radiation
Shield
3 Metal Screws
in Each Joint
Rise
Offset
10'
2' min.
Flashing*
with Storm
Collar
1' min.
Radiation
Shield and
Offset, Roof or
Wall Support
Insulated Wall
Radiation
Shield
(30° or 45°)
*In USA: use a
vented flashing
*In Canada: use
either a vented
flashing only or a
regular flashing
with a roof radiation
shield
RSF
Fireplace
* Use a vented
flashing if the
chimney is
enclosed to the
roof
* Use a regular
flashing if the
chimney is not
enclosed to the
roof

DELTA FUSION Owner's Manual 19 RSF Woodburning Fireplaces
OFFSET CHIMNEY
An elbow may be installed directly on top of the fireplace if required. See the detailed offset charts in the EXCEL
chimney installation manual. Use the offset option if you need to clear a joist or pass around a cupboard. See Figure
9 and Figure 10 for examples.
•Maximum offset angle:
•In USA: 30°;
•In Canada: 45°.
•Maximum number of elbows: four, resulting in two offsets and returns.
Install the fireplace and chimney as described earlier. When you require an elbow, proceed as follows:
1. Install the required elbow. Turn it in the desired direction, and fasten it to the other section with 3 metal screws
at the joints.
2. Install enough lengths to obtain the desired offset. Secure each joint with 3 metal screws.
3. Use another elbow to return the chimney to the vertical direction.
4. Install a roof support, a wall support, or an offset support above each offset to support the weight of the chimney
(elbows are not designed to support the chimney above an offset). The support can be installed anywhere
practical along the vertical course of the chimney as long as it is above the offset.
Through the Wall Offset
You can also go through the wall at an angle starting directly at the fireplace as depicted in Figure 10. An angled
wall insulated radiation shield (XM-8EWRSI30 or XM-8EWRSI45) must be used wherever the chimney passed
through an exterior wall. Make sure you have enough ceiling height. If not, you might want to consider installing the
fireplace in an outside chase.
If the chimney is enclosed once outside of the house, do
not install the outside plate of the angled wall insulated
radiation shield.
Refer to the angled wall insulated radiation shield
installation sheets for more detailed installations
instructions.
Make sure not to forget to install the small shield to
protect the top area of the opening through the wall. This
small shield is provided with the angled wall insulated
radiation shield.
CHASE ENCLOSURE
If the chimney runs up the outside of the house, we
recommend that it be enclosed in a chase structure. The
chase should be constructed in such a way that it is an
extension of the home. It should be well insulated
between the footings and the floor of the home to prevent
heat loss. If the climate in your area is mild, insulate the
chase at least to the first firestop. If the climate in your
area is very cold, insulate the chase to the top to keep
the chimney warmer, increase the draft, and reduce
creosote buildup. We also recommend insulating the
ceiling of the chase just as if it were in the attic space.
This will prevent cold air from dropping down through the
chase and into the room where the fireplace is installed
(see Figure 11).
Some local codes require that the walls be insulated,
vapor sealed and sheathed with a fire rated gypsum
board (see Figure 11). We strongly recommend this
procedure for all installations to prevent cold drafts from
Figure 11 Chimney Installed with a Chase
Enclosure Example
10'
2' min.
Optional
Decorative
Shroud
Insulation
Chase liner of fire rated
gypsum board is
recommended (may be
required by local authorities)
Radiation
Shield,
with Storm
Collar in
the Attic
RSF
Fireplace

DELTA FUSION Owner's Manual 20 RSF Woodburning Fireplaces
originating in the fireplace enclosure. If you follow this procedure, we recommend that you do not insulate the wall
above the front of the fireplace.
REMEMBER: Check local codes concerning installation requirements and restrictions in your area.
MASONRY CHIMNEY
Installing your DELTA FUSION fireplace with a masonry chimney still requires using EXCEL chimney from the top
of the fireplace to the wall where it will connect to a listed liner that will run up inside the masonry chimney (see
Figure 12).
The stainless steel liner should be fitted inside the clay liner all the way to the top of the masonry chimney. It is not
meant to replace the clay liner. You can use either the EXCEL liner or any other listed liner to ULC-S635, ULC-
S640 or UL-1777.
Special care is to be taken to make
sure that you have a good solid
connection between the EXCEL
chimney and the liner. A masonry
adaptor (FO-FDM8) was designed
specifically for that purpose and is
available from your RSF dealer. It will
attach to the liner with 3 stainless
steel rivets (provided) and to the
EXCEL chimney with 3 screws
(provided).
After mortaring in place, the
connection between the EXCEL
chimney and the liner should not be
visible in order to isolate the heat
released through the liner from the
fireplace enclosure.
As depicted in Figure 12, you must
install at least one 18" length of
EXCEL chimney after the EXCEL
chimney elbow. The uppermost part of the EXCEL chimney - where it enters the masonry chimney - must be a
minimum of 12" from the ceiling.
NOTE: If the ceiling is high enough, you can install one or more EXCEL chimney lengths directly on the fireplace
before the elbow.
If you use a flexible liner, make sure to be careful when cleaning to ensure that the stainless steel flexible liner is
not dislodged in any way.
Using an Existing Masonry Chimney
❖WARNING: IF YOU ARE CONSIDERING USING AN EXISTING CHIMNEY, IT MUST FIRST BE
THOROUGHLY INSPECTED BY AN AUTHORITY HAVING JURISDICTION TO DETERMINE THE FOLLOWING:
1. The masonry chimney is well constructed and fully lined, in accordance with Local Building Codes and the
National Building Code of Canada (NBC) or National Fire Protection Association chimney standard (NFPA 211).
2. It has been thoroughly cleaned of any soot or creosote residue and inspected to determine that it is in good
working condition.
3. There is no insulation of any type in contact with the masonry chimney and there is no insulation stuffed
anywhere in the chimney.
4. All the necessary clearances around the masonry chimney, along the complete run of the chimney, are
respected as per NBC or NFPA 211. If the masonry chimney is enclosed in drywall, openings will probably be
required in order to verify clearances at all points.
5. The masonry chimney will only be used for the fireplace and no other appliance.
If major repairs are required to meet the above conditions, a new chimney should be constructed.
Figure 12 Connection to a Masonry Chimney
Mortar
Mortar
Clearances as per
NBC or NFPA 211
EXCEL liner or other listed liner to
ULC-S635, ULC-S640 or UL-1777
12" min. to
combustible ceiling
EXCEL chimney
lenght: 18" min.
EXCEL chimney
elbow
Masonry Adaptor
FO-FDM7
Metal
Firestop
Liner
Elbow
RSF
Fireplace
8