Firenzo Fusion User manual

Page | 1
Version 29/8/16
INSTALLATION AND OPERATION INSTRUCTIONS
for the
Fusion Boiler
Firenzo have been making stoves of the highest quality for over 35 years in New Zealand.
Leaders in manufacturing stoves with ultra-low emissions and superb efficiency, Firenzo are
ranked as one of the most respected brands in New Zealand.
By carefully following these instructions, we are certain that you will enjoy many years of
safe, comfortable warmth from your new Firenzo stove.

Page | 2
Version 29/8/16
1. INDEX
Page No: Item No: Topic:
2 1 Index
2 2 Installation Responsibilities
3 3 Floor Protector Requirements
4 4 Dimensions and Clearances
5 5 Installation Procedure
6 6 Flue System Specifications
7 7 User Responsibilities
8 8 Operating Instructions
11 9 Maintenance
12 10 Warranty
2. INSTALLATION RESPONSIBILITIES
•You must consult with the relevant local authority having jurisdiction to determine the need
for a building permit approval process to be undertaken prior to commencing the
installation.
•This appliance must be installed by someone competent to do so, Firenzo recommend the
use of a NZ Home Heating Association, solid fuel appliance installation technician (SFAIT), or
other suitably qualified person.
•The appliance and flue system must be installed in accordance with AS/NZS 2918:2001 and
the appropriate requirements of the relevant NZ Building Code or Codes.
•The boiler connection and associated plumbing installation must comply to all relevant
AS/NZ plumbing and building codes, but to AS3500.4.1 and NZS4603 at the minimum.
•The appliance must never be used if the boiler is not connected and filled with water and
must not connect to an unvented hot water system.
•The appliance must also be installed in strict accordance with the specifications of these
installation instructions.
•The flue system must be AS/NZS 2918:2001 Appendix F tested by the flue manufacturer and
their specifications for the installation of the flue system must be adhered to.
•The appliance must not be connected to a chimney or flue system serving any other
appliance.
•This appliance has been tested to N.Z. Standards AS/NZS 2918:2001. Appendix B&E as
relevant for safety, AS/NZ 4012:2011 for efficiency and AS/NZ 4013:2011 for emissions.
•Failure to follow these instructions may void your home insurance and in certain cases void
your warranty.
•WARNING: These fires can weigh up to 210kg including packaging, please ensure adequate
precautions are in place to enable safe lifting and handling on site.
•This manual must be left with the appliance / homeowner and kept for future reference.

Page | 3
Version 29/8/16
3. Floor Protector Requirements
AS/NZ2918 Section 3.3 states that if the heater is to be placed on or within 500mm of heat sensitive
materials in the floor, then a floor protector will be required. This floor protector shall extend under
the heater and not less than 300mm beyond the front of the fuel loading or ash removal openings.
The width of the floor protector shall be not less than the width of the appliance and shall extend
not less than 200mm from each side of the fuel loading or ash removal openings unless it forms an
abutment with a wall or heat shield at a lesser distance.
If the appliance is being installed directly onto a non-heat sensitive floor, an ash protector area to
the dimensions as drawing F/P 001 (below) is all that is required.
If the appliance is to be installed directly onto a heat sensitive floor an insulated floor protector will
be required to prevent excessive heat transference, and needs to meet the tested requirements
under AS/NZ 2918:2001. as detailed in drawing F/P 001 as below.
You may
1. Construct a purpose made floor protector on site to the minimum dimensions as drawing
F/P 001 below. It must consist of a minimum of 20mm of Insulation board (Micore 160,
Supalux, Promatech H, Eterpan LD or product of similar thermal resistance) and tiles/slate or
similar non-combustible surface with sealed joints on the top surface to protect from
spillage of any hot ash/embers.
F/P 001
4. Dimensions & Clearances

Page | 4
Version 29/8/16
Note. Boiler outlets are 1” bsp and can be left or right handed. Shown here left handed. The faces of
female plumbing connections are 215 mm from centre of appliance.
Please note:_ All Clearances shown are from the steel body of the Fusion unless specified.
Dimension ‘A’ is shown from the rear heat shield to the rear wall, and dimension ‘B’ is from the side
of the top cast plate to the side wall.
Appliance MUST be installed with a Firenzo double flue shield
Clearance A B C D E F G H J K L M N O
mm 150 450 350 200 350 395 720 428 940 930 1170 970 535 460
895
540
475
312
245
155

Page | 5
Version 29/8/16
5. Installation Procedure
1. Remove all outer packaging and carefully dispose of.
2. Remove top casting and carefully set aside.
3. Remove the upper and lower cast doors and carefully set aside.
4. Remove package containing vortex cap and handles etc. from within upper chamber and
carefully set aside.
5. If using the Firenzo insulated floor protector position it now following instructions supplied.
6. Accurately position the fire onto the floor protector ensuring all necessary safety clearances
are adhered to along with the correct alignment of the flue system to the flue spigot outlet.
7. Fit top casting on to fire box ensuring a good seal to the rope bed and again check alignment
of flue system and clearances.
8. Assemble and install the flue system, also ensuring all necessary safety clearances are
adhered to. A flue sealing shim is provided to help seal the flue system to the flue spigot
outlet if required. See flue installation section 6 for flue specifications.
9. Install the special Firenzo double flue shield to the flue system above the appliance following
the instructions supplied.
10. Secure the fire (and floor protector if necessary) to the floor by using appropriate
fastenings for the substructure, through the earth quake restraints on the rear legs. This is
a compulsory New Zealand building code requirement.
11. The boiler at the rear of the appliance can be orientated left or right outlet to suit the
easiest plumbing connection. Simply undo the four retaining bolts, turn boiler around and
re-secure it (checking rope seals are in place) with the four bolts.
12. Make necessary plumbing connections, fill with water and check for no leaks.
13. Fit the upper and lower doors and check they swing freely and seal correctly.
14. Remove vortex cap from package and install into vortex tube in the upper chamber. The
locating tabs on the underside ensure correct alignment into tube and the side of the of
vortex cap with the closed face, must face forwards towards the door.
15. Fit door knobs (diagram 2 below). The door knobs go on the outer side of the door handles.
16. This instruction manual must be left with the appliance and or homeowner for them to read
and understand prior to using the appliance
6. FLUE SYSTEM SPECIFICATIONS

Page | 6
Version 29/8/16
Firenzo recommend the use of our proprietary flue system which has been fully tested to
AS/NZ2918:2001 appendices F & B. and has 2 variants to a standard flue kit that must be used.
If an alternative flue system is chosen, it must be tested to AS/NZ 2918:2001 appendice F and the
manufacturer’s specifications for the installation of the flue system must be adhered to. It however
must have an extended ceiling plate to 460 x 460mm and the special Firenzo double flue shield
must be used.
1. Position heater on floor protector ensuring all heater
clearances are correct as per clearances in section 4.
2. Once the location is confirmed, the appliance and floor
protector (if required) shall be fixed to the floor itself as
section 5..
3. Extend a plumb line from the centre of the fire flue pipe
spigot to the ceiling. Mark position on ceiling and roof.
4. Trim hole and nog as required ensuring that a 25mm
safe clearance (or manufacturer’s specs if different)
between combustible materials and flu components
is maintained. Fix with non-combustible spacers and
screws or clouts on all four sides.
5. Cut and frame (when required) an opening in the roof,
position the outer casing through the roof until it is flush
with the underside of the ceiling, making sure as with
the ceiling there is a 25mm safe clearance (or manufacturer’s
specs if different ) between non-combustible materials and
the flue components. Fix as in step 4.
6. Fix appropriate flashing around outer casing to the
roof and ensure compliance to relevant building codes.
7. Assemble flue pipe sections ensuring all seams are in
line, the assembly is straight and crimped. Ends are
pointing downwards. Fix each joint with three stainless
rivets or self-tapping screws.
8. Place ceiling plate with folded edges upwards over
heater spigot.
9. Position the flue pipe into the heater spigot. The flue
pipe can either lowered from the top as a single unit or
fed up from the room a length at a time, ensuring that
all joints are fixed properly.
10. Slide the inner casing into place, between the outer casing
and the flue pipe.
11. The flue pipe must extend 200mm above the outer casing.
Note: Extra lengths of flue pipe, inner and outer casing
may be required to achieve the minimum clearance from
the roof.
12. Slide top spreader over flue pipe down into outer and inner casing and tighten.
13. Slide cowl over flue pipe until it rests on spreader. Secure with rivets or self-tapping screws.
14. Fit rain hat. Do not fasten as it must be removable for flue pipe cleaning.
15. Fix ceiling plate to ceiling maintaining an even gap all around flue pipe Ensure ceiling plate is spaced off
from the ceiling with the ceramic spacers supplied.
CAUTION: Mixing of appliance or flue system components from different sources or modifying the
dimensional specifications of components may result in hazardous conditions. Where such action is
considered the flue system manufacturer should be consulted in the first instance prior to installation.

Page | 7
Version 29/8/16

Page | 8
Version 29/8/16
7. User Responsibilities
You must read and understand this instruction guide prior to using the appliance. You may void your
warranty if the appliance is not installed, used and maintained in accordance with these instructions.
•Use only dry fuel with a moisture content not exceeding 25%.
•High fuel moisture content simply causes poor performance and creates soot deposits that
block up the fire. The better the fuel, the better the heating performance.
•Do not use treated timbers as a fuel source. Timber treated with preservatives will leave
toxic residues in the firebox, the flue and the atmosphere. The combustion of this material
even over short periods of time will deteriorate the appliance and void the warranty.
•The appliance must never be used if the boiler is not connected and filled with water.
•When using the stove in situations where children, aged and/or infirm persons are present a
fireguard must be used to prevent accidental contact with the appliance which may cause
burns.
•Always keep combustible households items and furniture a safe distance (at least 600mm)
away from the appliance, clothing being dried is a common source of household fires.
•Do not use any aerosol sprays on or near the stove when it is alight, this includes cleaners
and air purifiers that may contain flammable substances.
8. Operating Instructions
Your Firenzo Fusion utilises gasification combustion technology, so runs quite differently to a
conventional wood stove. You must operate your stove strictly in accordance with these
instructions, this will enable you to achieve efficient use of your fuel and get maximum heat output.

Page | 9
Version 29/8/16
Unlike a conventional wood stove it has a fixed air supply, so when loaded and running it only
requires to be refuelled to maintain its heat output level. The control on the right hand side is only
to be used to direct the flue draft operation for initial lighting until the appliance and flue has
warmed sufficiently to run in normal operation mode and then used again to enable refuelling as
required.
Failure to follow this simple operation principle will reduce the appliances efficient heat output, may
cause the appliance to emit smoke to the room when refuelling and if operated incorrectly for
prolonged periods may void your warranty
Initial lighting
When using the appliance for the first few times, the high temperature paint system used may emit
some smoke and strong odours until the paint fully cure. This is a temporary condition and you will
need to open any doors and windows to ventilate the area until it ceases.
•Turn the control knob on the right hand side to the lighting/reload position as shown in the
picture on page 8.dia 2.
•Fully open upper chamber door to enable fuel loading.
•Arrange adequate amount of kindling directly into base of fire box and across the top of the
vortex cap and light using appropriate lighting fuel.
Dia1. Normal Operation
dia2. Lighting and Refuelling

Page | 10
Version 29/8/16
•Partially close the upper chamber door leaving it ajar slightly to enable quick ignition of the
kindling and leave until the kindling has well established flames and is starting to create
some embers.
•When ready, open door, add intermediate size fuel logs and then fully close the door.
•When the intermediate fuel is burning well and a clear ember bed is established, open door
and add a first load of 2 to 3 normal sized logs.
•The logs must be loaded in a front to back orientation.
•When the full logs are burning well and the ember bed is fully established, and this process
will normally take about 30 minutes, the handle on the right hand side can be pulled down
and forward to the normal operation position as picture on page 8. dia1.
•The vortex flame should establish in the lower chamber and be clearly visible and stable. If it
pulses or extinguishes turn the handle back to the lighting/reload position and allow the fire
to warm up further for another 5-10 minutes and then try again until it does.
•Once the vortex flame is established the appliance can be left to run in its normal operating
mode.
Refuelling
As the appliance has no adjustable air control its output can be controlled by the volume and
regularity of refuelling. Its design and operation work best with a fuel load of 3 to 4 logs and / or a
load weighing 2.5 to 3 kg,s at a time. This will give approximately an hours’ worth of use for each
fuel load depending on fuel moisture content and effective flue draw.
Before any reloading operation you must turn the control handle back to the lighting/reload
position there is a safety device stopping the door opening until this is done. This stabilises the flue
Allow fuel bed to burn down to give adequate safe loading room for new fuel load.
•Turn control handle to lighting/reload position taking safety catch off the door allowing door
to open p8.dia2.
•Add new fuel load in a front to back orientation.
•Fully close the door.
•Turn control handle to normal operation position as p8 dia1.