LACUNZA Silver 800/1000 Zero Clearance Box Instructions
- October 30, 2023
- LACUNZA
Table of Contents
SILVER 800 & SILVER 1000 INBUILT
ZERO CLEARANCE BOX SUPPLEMENT INSTRUCTIONS
MUST BE IN CONJUNCTION WITH THE INSTALLATION MANUAL
FOR THE SILVER 800 AND SILVER 1000 MODELS.
Silver 800/1000 Zero Clearance Box
TESTED IN ACCORDANCE WITH AS/NZS 4013:2014 and AS/NZS 2918.
Please read through this manual thoroughly before installing and starting your
free-standing appliance.
Keep these instructions for future reference.
Zero Clearance Parts List
Check all the parts are supplied before beginning the assembly.
Assembly Instructions
Step 1: Assemble the Stand
1.1 Start by making the two side end frames for the stand first. For each end,
you will use 2 x Stand Horizontal Short Brackets and 2 x Stand Vertical
Brackets. Lay them out as seen in the image below. 
1.2 Line up the corners by aligning the holes with the wider
fold in the leg and use the 8 x SelfTapping Screws on each hole.
1.3 Repeat for the opposite side. You should have 2 x Stand Sides. 1.4 Now you
can join the two Stand Sides with the four Stand Horizontal Long Brackets. You
can line them up with the Long Brackets go on the outside of each corner.
Start by lining up one side first, then move to the other side. 
1.5 You will then need 16 x Self-Tapping Screws, to join
everything and make the stand. Note that the Bottom Tabs in the stand can also
be used to fix the frame to the floor. Ensure the base is secured to the
floor, using fixings appropriate for the flooring structure. The floor must be
able to support the weight of the heater, flue, and fuel load, which is
approximately 300kg. Refer to Step 2.2, to see how the Tabs can be bent out.
1.6 This concludes the assembly for the
Stand, and you can now prepare for the assembly of the Zero Box. You will
begin assembly with the stand, so if you haven’t secured your stand down, we
suggest you move it close to where the unit will be installed with the Zero
Box, if you haven’t so already, as the Zero Box can be quite heavy to move
around.
Step 2: Attaching the Stand to the Zero Box
2.1 Place the Bottom Panel, on top of the completed Stand. The front of the
bottom panel should be flat in line with the front stand face. 
2.2 Flip up the Top Tabs to stop the Bottom Plate from moving
around. Ensure you do this on both sides, there should be a total of four Top
Tabs. 
2.3 Once the front is lined up and the tabs
are bent up, secure the Bottom Plate to the Stand by using 6 x Self Tapping
Screws.
2.4 You can then add the 3 x Bottom
Brackets to the fixed Bottom Panel. Line them up with each hole on the Bottom
Panel, and then use 4 x Self Tapping Screws on each Bottom Bracket (A total of
12 x Self Tapping Screws). Note that each of the Bottom Brackets should sit
under the Front Fold of the Bottom Panel.
2.5 Grab either the
RHS/LHS Side Panel, and slot it into the appropriate sides. This is indicated
with the circle cut-outs on each Side Panel, which should be on the bottom
side, and the three-fold edge should be on the front side. Note the Side
Panels should be placed on the inside of the Bottom Panel.
2.6 Screw the lined-up holes for the RHS/LHS Side Panel as
shown below, you will need 5 x Self Tapping Screws for one side (A total of 10
x Self Tapping Screws). Repeat this step for the opposite side. Note only
fully tighten the screws once the top is in position. 
2.7 Slide the Back Panel into the inside of the Side Panels
and Bottom Panel. 2.8 Line up the holes and use 9 x Self Tapping Screws. Use
the circle cut-outs in the Back Panel to pull the sheet towards you, which
should help when you are inserting the Self Tapping Screws. Again, don’t
tighten the Self Tapping Screws until the Top Panel has been placed. 
2.9 You can now place the Top Panel on the top. All the folds
should sit on the outside of the Side Panels and the Back Panel. 
2.10 The holes should line up on The Top Panel, with the Side
Panels and Back Panel. Then use 5 x Self Tapping Screws for the sides (A total
of 10 x Self Tapping Screws) and 3 x Self Tapping Screws). If you are
installing for the Silva 800, then go to Step 4 before continuing. Once the
Top Panel is on, tighten all the screws. 
2.11 You can then
add the Back Bracket to the Back Panel. The heater will stop when inserted up
to the Back Bracket. Use 4 x Self Tapping Screws to attach the Back
Bracket.
Step 3: Fitting the Flue
3.1 The flue should be raised off the top of the Zero Clearance Box, using the
2 x Flue Brackets. The Flue Brackets are fixed to the 200mm Flue (Inner
Casing), and the upper folded ushaped hook is fixed to the 300mm Flue (Outer
Casing). You will need 3 x Self Tapping Screws for each Flue Bracket (A total
of 6 x Self Tapping Screws). The 200mm Flue slides through the top of the Zero
Clearance Box and sits above the heater resting on the Flue Brackets. The
200mm Flue must be sealed with a flexible sealant around the top of the Zero
Clearance Box, to stop heater air from coming into the chimney chase cavity.
The 300mm Flue must sit 65mm above the top of the Zero Clearance Box.
Step 4: Converting SILVER 1000 to SILVER 800
4.1 If you are installing the Silver 1000, then you are completed with
assembly. If you are installing for the Silver 800, you will need to assemble
the 2 x Side Fill-Ins before tightening the Top and Side Panels. There are
four slots for each Side Fill-In, at the top and bottom.
Completed Zero Clearance Box with Stand for Lacunza Silver
800/1000
Import Safety and Clearance Information
Silver 1000
- Venting in the ceiling of the enclosure around the outer triple flue skin must be a minimum of 335,405mm 2 , evenly spaced around the outer casing.
- Timber framing in the ceiling cavity must be a minimum of 1230mm above the zero box and must not restrict the 335,405mm² air flow around the flue casing.
- The outer galvanised casing of the flue (300mm) must be raised 65mm above the zero clearance box.
- The inner galvanised casing of the flue (250mm) must be vented into the zero clearance box outer skin and be sealed to prevent venting into the enclosure.
- The combustible enclosure must have 2 vents, each vent must be a minimum 9,820mm². The bottom vent must be 50mm above the floor, the top vent must be 500mm below the ceiling. They must be installed on the front of the combustible enclosure and ust be made of a heat resistant material.
- Underside mantle shelf shall be no closer than 550mm from the top of the appliance hot air outlet, the mantle shelf shall extend no further than 250mm into the room.
- Underside mantle key shall be no closer than 500mm from the top of the appliance hot air outlet, the mantle key shall extend no further than 25mm into the room.
- Mantle uprights shall be no closer than 150mm from the side of the appliance and the mantle uprights shall be no thicker than 40mm.
- The front wall of the enclosure must be made of non-combustible material to a height of 400mm above the appliance and must extend 250mm either side of the appliance down to the floor protector.
- First internal wall noggin must be made of a non-combustible material above the zero clearance box.
- Combustible material to the rear/rear wall of the enclosure must be a minimum of 100mm from the rear of the appliance zero clearance box.
- Combustible material to side/side wall of the enclosure must be a minimum of 100mm from the side of the appliance zero clearance box.
- Hearth Thickness is 6mm, please see diagram below for size.
Silver 800
- Venting in the ceiling of the enclosure around the outer triple flue skin must be a minimum of 335,405mm 2 , evenly spaced around the outer casing.
- Timber framing in the ceiling cavity must be a minimum of 1230mm above the zero box and must not restrict the 335,405mm² air flow around the flue casing.
- The outer galvanised casing of the flue (300mm) must be raised 65mm above the zero clearance box.
- The inner galvanised casing of the flue (250mm) must be vented into the zero clearance box outer skin and be sealed to prevent venting into the enclosure.
- The combustible enclosure must have 2 vents, each vent must be a minimum 9,820mm². The bottom vent must be 50mm above the floor, the top vent must be 500mm below the ceiling. They must be installed on the front of the combustible enclosure and must be made of a heat resistant material.
- Underside mantle shelf shall be no closer than 550mm from the top of the appliance hot air outlet, the mantle shelf shall extend no further than 250mm into the room.
- Underside mantle key shall be no closer than 500mm from the top of the appliance hot air outlet, the mantle key shall extend no further than 25mm into the room.
- Mantle uprights shall be no closer than 150mm from the side of the appliance and the mantle uprights shall be no thicker than 40mm.
- The front wall of the enclosure must be made of non-combustible material to a height of 400mm above the appliance and must extend 250mm either side of the appliance down to the floor protector.
- First internal wall noggin must be made of a non-combustible material above the zero clearance box.
- Combustible material to the rear/rear wall of the enclosure must be a minimum of 100mm from the rear of the appliance zero clearance box.
- Combustible material to side/side wall of the enclosure must be a minimum of 100mm from the side of the appliance zero clearance box.
- Hearth Thickness is 6mm, please see diagram below for size.
Clearance Diagrams
Silver 800
Silver 1000
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