Nectre Fireplaces MK3 User manual

Nectre MK3
Installation Instructions
Pecan Engineering Pty Limited proudly supports the activities of Landcare Australia through its membership of the AHHA

Most building regulatory Authorities in Australia require any
wood heater installation to comply with Installation Standard
AS/NZS 2918:2001. Different states and councils may have
varying regulations. Check local building regulations before
installing the appliance.
All Nectre wood heaters have been tested to ensure that they
will meet the appropriate safety Standard requirements if the
instructions in this manual are followed. As the safety and
emissions performance can be affected by altering the
appliance, no modifications are allowed without written
permission from the manufacturer.
WE RECOMMEND THAT THE INSTALLATION OF YOUR
NECTRE WOOD HEATER BE CARRIED OUT BY A QUALIFIED
INSTALLER.
WARNING: THE APPLIANCE AND FLUE SYSTEM SHALL BE
INSTALLED IN ACCORDANCE WITH AS/NZS 2918:2001 AND
THE APPROPRIATE REQUIREMENTS OF THE RELEVANT
BUILDING CODE OR CODES.
WARNING: APPLIANCES INSTALLED IN ACCORDANCE WITH
THIS STANDARD SHALL COMPLY WITH THE REQUIREMENTS
OF AS/NZS 4012 & AS/NZS 4013 WHERE REQUIRED BY THE
REGUALTORY AUTHORITY, I.E. THE APPLIANCE SHALL BE
IDENTIFIABLE BY A COMPLIANCE PLATE WITH THE MARKING
‘TESTED TO AS/NZS 4012 & AS/NZS 4013’.
ANY MODIFICATION OF THE APPLIANCE THAT HAS NOT
BEEN APPROVED IN WRITING BY THE TESTING AUTHORITY
IS CONSIDERED TO BE IN BREACH OF THE APPROVAL
GRANTED FOR COMPLIANCE WITH AS/NZS 4012 & AS/NZS
4013.
CAUTION: MIXING OF APPLIANCE OR FLUE-SYSTEM
COMPONENTS FROM DIFFERENT SOURCES OR MODIFYING
THE DIMENSIONAL SPECIFICATION OF COMPONENTS MAY
RESULT IN HAZARDOUS CONDITIONS. WHERE SUCH ACTION
IS CONSIDERED, THE MANUFACTURER SHOULD BE
CONSULTED IN THE FIRST INSTANCE.
CAUTION: CRACKED AND BROKEN COMPONENTS, EG. GLASS
PANELS OR CERAMIC TILES, MAY RENDER THE INSTALLATION
UNSAFE.
2.1 Positioning the Heater
First review the necessary clearances specified below before
considering where to position the heater.
Also check the practicability of installing the flue system in
relation to any obstructing roof beams before positioning
the heater.
These clearance distances can only be reduced if the
surrounding walls are made of non-combustible material,
eg. Stone, brick, or concrete. If non-combustible material,
distance can be reduced to 100 mm. Alternatively, shielding
of the wall(s) can reduce clearances (refer to next section
for more detail).
Depending on the type of flue shielding used, the clearances
to combustible surfaces varies.
2.1.1 Standard Installation:
Clearances –Standard Installation
B (mm)
C (mm)
Side - S (mm)
Rear - R (mm)
Floor - F (mm)
400
150
300
THE INSTALLATION INSTRUCTIONS IN THIS
MANUAL APPLY TO THE NECTRE MK3.
IT HAS BEEN TESTED FOR EMISSIONS AND EFFICIENCY
AND COMPLIES ACCORDING TO AS/NZS 4012:2014 &
AS/NZS 4013:2014.
F
R
Combustible Wall
S
Combustible Wall
2. INSTALLING THE HEATER
1. IMPORTANT INFORMATION

2.1.2 Corner Installation:
Clearances –Corner Installation
B (mm)
Floor - F (mm)
Corner - C (mm)
300
150
2.2 Floor Protector (Hearth)
Unless the heater will be standing on a heat resistant floor
such as concrete slab with slate or tiles, it will be necessary to
provide a floor protector (hearth).
The dimensions given in above (Section 2.1) are the minimum
required for the floor protector. It must extend no less than
300 mm in front of the door opening, no less than 200mm
either side of the door opening, and extend under the heater.
Minimum dimensions for floor protector are 900mm wide by
900mm deep. It may be desirable, for example aesthetic
reasons, for the floor protector to be larger than these
minimum dimensions.
The floor protector shall be constructed of either: -
a) 10mm thick toughened glass, OR
b) Non-combustible material no less than 15mm thick
and with a thermal conductivity not greater than
0.33W/m ºK, eg. compressed cement sheet.
The floor protector may be laid directly on the combustible
floor.
For more details and variations on floor protectors refer to
AS/NZS 2918:2001 Clause 2.2, 3.3.1, & 3.3.2.
If it is necessary to install a heater closer to a combustible
surface than the stated requirements in Section 2 of this
Installation Guide, it must be done in accordance with
Australian Standard AS/NZS 2918:2001 Section 3, Tables3.1
& 3.2.
Shield Construction:- The shield shall be constructed froma
heat resistant material. The shield must be fixed to the
surface that requires protection and NOT the heater.
The Standard allows three options to reduce stated
clearances.
Single layer of continuous material with Minimum Air Gap of
12mm—Clearance Factor = 0.40
Single layer of continuous material with Minimum Air Gap of
25mm—Clearance Factor = 0.30
Two spaced layers of continuous material with Minimum Air
Gaps of 12mm + 12mm—Clearance Factor = 0.20
The shielding must be open at the top and bottom (vented)
to allow a continuous air flow. It is this air flow that keeps
the surface requiring protection cool. Fixings should not
impede this air flow.
The shielding needs to go far enough along and up the wall
so that the original side and rear required clearances are not
compromised. As the flue is now closer to the wall the
shielding should also protect the wall from the flue pipe.
For example:
Side wall clearance for the MK3 is 400 mm.
A 12mm gapped shield on the wall with a factor of 0.40.
Calculate:- 400 mm x 0.40 = 160 mm. This is the new side
wall minimum clearance.
The shielding needs to be large enough so that none ofthe
original clearances of 400 mm are compromised.
Combustible Wall
Combustible Wall
C
C
F
3. REDUCING CLEARANCES TO COMBUSTIBLES

The flue system used when installing the heater MUST
comply with the current installation standard AS/NZS2918.
Full instructions on the installation of the flue will be supplied
with the flue kit. These MUST be adhered to, including the
minimum exit height from the top of the floor protector
being not less than 4.6m, and the minimum exit height above
the roof line of roof ridge as detailed in theinstructions.
The flue must be fitted with either of the following:
1) Rear Flue Shield –900mm long, minimum 160° arc,
stainless steel rear flue shield painted black, OR
2) Solid Flue Shield –a full length, solid outer flue shield
(7.75” – 8” diameter) extending from the heater
through into the drop box penetrating the ceiling. The
base of the solid outer shield must be fitted with the
Decromesh Locating Ring supplied with in the heater. A
900mm high external rear heat shield (130mm wide,
needs to be ordered separately) shall be fitted to the
rear of the solid outer shield, positioned 25mm above
the top of the heater and 15mm off the rear of the solid
outer shield, OR
3) Decro-mesh –a full length, half radius perforated
decro-mesh flue shield (7.75” – 8” diameter) extending
from the heater through into the drop box penetrating
the ceiling. A 900mm half round inner reflector must be
fitted inside the decro-mesh. Using tin-snips, cut 10mm
tabs into the top and bottom of the inner reflector and
bend out to create an air gap between it and the outer
decro-mesh. The base of the decro-mesh outer shield
must be fitted with the Decromesh Locating Ring
supplied within the heater.
Depending on the supplier, decro-mesh can be one of three
sizes –200 mm, 7 ¾ inch, or 8 inch diameter. The
Decromesh Locating Ring will fit the two smaller diameters
but not the 8 inch. In this scenario, snip through the outer
ring with tin-snips, as shown in the diagram below. Bend
the two “arms” in a little so they ends don’t project out
when fitted to the decro-mesh. Ensure that the snipped
section is at the rear of the flue, out of sight.
If the draft is insufficient or periodic down drafting occurs and
the heater smokes or only burns slowly, extending the flue or
fitting a specialized cowl will usually resolve theissue.
Rear Flue Shield / Solid Flue Shield Installation
Decro-mesh Installation
4. INSTALLING THE FLUE
Gently bend these in
a little after snipping
in the centre
900mm stainless steel rear
flue shield (painted black)
OR
Full length solid flue shield with
external flue shield (painted black)
Decro-mesh with solid back
900mm stainless steel inner reflector
fitted inside the rear of the decro-mesh

The Nectre MK3 comes with 11 full size bricks (230(h)
x 115(w) x 38(d)mm).
Raise the brick retainer (supplied inside the firebox) and
start standing the bricks up against the rear and sides of
the firebox as shown in the diagram below.
Once bricks are in, fit the retainer over the top to hold
them in place.
The Nectre MK3 is supplied with two baffle plates:-
1) Upper baffle plate –400(w) x 160(d) x 5(h) mm.
•Fit the upper baffle plate first.
•With the plate in a horizontal position, slide it up and
over the shorter of the two sets of support hooks
welded to the top of the firebox.
•Slide the plate back so that it rests on the upper
support rod on rear wall of the firebox.
•The upper baffle plate should be in a horizontal
orientation.
2) Lower baffle plate –500(w) x 300(d) x 12(h) mm
•Slide the lower baffle plate up and over the lower set
of support hooks welded to the top of the firebox.
•Slide the plate back so that it rests on the lower
support rod on the rear wall of the firebox.
•Unlike the upper baffle plate, the lower baffle plate
rests on a slight angle sloping down and back to the
rear of the firebox.
The ash plate acts to protect the front of the firebox below
the door opening from the hot coal bed and fire.
When positioning the ash plate, ensure that the front top
edge is flush against the inside edge of the firebox beneath
the door opening.
5. INSTALLING FIRE BRICKS
6. INSTALLING BAFFLE PLATES
7. INSTALLING ASH PLATE
Upper baffle plate
support lug
Lower baffle plate
Upper baffle plate
Lower baffle plate
support lug
Ash plate

Pecan Engineering Pty Limited
13 Acorn Road, Dry Creek South Australia 5094
T: [phone] | F: [phone]
Email [email protected]
8. TECHNICAL DRAWINGS