Nectre Fireplaces MK3 Installation Instructions 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

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

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, Tables 3.1

& 3.2.

Shield Construction:- The shield shall be constructed from a

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 of the

original clearances of 400 mm are compromised.

Combustible Wall

Combustible Wall

C

C

3. REDUCING CLEARANCES TO COMBUSTIBLES

The flue system used when installing the heater MUST
comply with the current installation standard AS/NZS 2918.

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 the instructions.

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 the issue.

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 [e-mail]

8. TECHNICAL DRAWINGS