Nectre Fireplaces MK2 LE User manual

Nectre MK2 LE
Installation Instructions
Pecan Engineering Pty Ltd
13 Acorn Road
Dry Creek
South Australia 5094
Email [email protected]
Phone: [phone]
Fax: [phone]
ACN 007 741 693

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:
Flue shielding
A (mm)
B (mm)
C (mm)
900mm shield
450
125
400
Decro-mesh with
900mm inner reflector
350
125
400
THE INSTALLATION INSTRUCTIONS IN THIS
MANUAL APPLY TO THE NECTRE MK2 LE.
IT HAS BEEN TESTED FOR EMISSIONS AND EFFICIENCY
AND COMPLIES ACCORDING TO AS/NZS 4012:1999 &
AS/NZS 4013:1999.
1. IMPORTANT INFORMATION
2. INSTALLING THE HEATER

2.1.2 Corner Installation:
Flue shielding
C (mm)
D (mm)
900mm shield
400
200
Decro-mesh with
900mm inner reflector
400
125
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
400 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 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 MK2 LE is 450 mm.
A 12mm gapped shield on the wall with a factor of 0.40.
Calculate:- 450 mm x 0.40 = 180 mm. This is the new side
wall minimum clearance.
The shielding needs to be large enough so that none of the
original clearances of 450 mm are compromised.
3. Reducing Clearances to Combustible Walls

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 followed closely, 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 –900 mm long, minimum 160° arc,
stainless steel unpainted rear flue shield, OR
2) Decro-mesh –a full length, half radius perforated
decro-mesh flue shield extending from the heater
through into the drop box penetrating the ceiling. A
900 mm 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.
If the draft is insufficient or periodic down drafting occurs
and the heater smokes or only burns slowly, extending the
flue or fitting a specialist cowl will usually resolve the issue.
Flue Spigot Heat Reflector
A flue spigot heat reflector is supplied inside the heater. This
must be fitted to the flue spigot on the heater. The three lugs
on the reflector hang inside the flue ring (spigot) with the
reflector orientated at the rear of the heater.
This device reflects the heat radiating from the flue spigot on
to the rear wall.
The Nectre MK2 LE comes with 9 full size bricks (234(h) x
118(w) x 40(d)mm) and 2 half size bricks (234(h) x 59(w) x
40(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.
5. INSTALLING FIRE BRICKS
4. INSTALLING THE FLUE

Upper baffle plate
support lug
Upper baffle plate
Lower baffle plate
Lower baffle plate
support lug
Ash plate
The Nectre MK2 LE 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 –490(w) x 245(d) x 6(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.
6. INSTALLING BAFFLE PLATES
7. INSTALLING ASH PLATE

Legs model:
Pedestal model:
Top view:
8. TECHNICAL DRAWINGS