Heatmaster A450, A650, A750, A900 Installation Manual
Installation of fireboxes
100 mm clearance
combustable floor
Add Cowl
Ventilation holes
in outer flue or
cowl
Ceiling void
ROOF
Flashing
Inner
SS flue
Outer
Gal flue
Framing
50 mm on edge
25mm from
combustible
material
Front of
unit
2nd skin
sit on top
of box
25mm from
combustible
material
25 mm ventilated
air gap with non
combustable
spacers
6 mm fibre
cement sheet
1 mm
steel sheet
Cover clearance
with desired fascia
Spacers on
inside of gal flue
to ensure 25mm
clearance from
inner flue to
outer flue
Min Flue
height
3.6 m
from top
of unit
Ceiling void
Stainless Steel Flue
Crimp end faces down
Ventilation Holes
Gal Flue
Crimp end faces up
Firebox
ROOF
Situation "B"
600 min
above roof
Silicon flashing
to ensure no water
can enter roof line
Situation "A"
600 min above
roof 3.6 m away
Situation "A" less that 3.6 Metres
Situation "B" greater than 3.6 Metres
ADD Cowl
(see manufacturer
for other cowl options)
4
Flue details
Fluing your Heatmaster fireplace.
The Heatmaster double skin flue kit, into timber and plaster must have clearance of 25mm from any combustible material. Be sure the inner stainless steel
flue crimped end faces down while the outer galvanized flue crimped end faces
up. The first length of galvanized flue must have ventilation holes at the bottom;
these cool the flue down by allowing air to travel in between the two skins.
Be sure to pop rivet (or use self-tapers) each stainless and galvanized flue
length together along with the cowl.
The flue must protrude above the roofline by no less then 600mm
with nothing obstructing within 3600mm.
(See diagram 3B)
Fig 3B - Flue Roof Clearance
Fig 3A - Flue installation
Fig 3C - Off sets and Clearances
200 300
105
450
260
100
230 300
110
650
300
390
100
250 300
150
750
340
430
100
250 330
150
900
340
430
130
420
190
190
220
470
A 650
380
190
190
220
470
A 450
440
190
200
220
480
A 750 and 900
THE “A” SERIES
Standard Insulated
Heatmaster Fireplace
Installation Guide
Heatmaster
National Office
2/9 Nicole Close
Bayswater Victoria 3153
Phone: 03 9761 7130
Fax: 03 9761 7134
Heatmaster
NSW, QLD
2/16 Lexington Drive
Northwest Business Park
Bella Vista NSW 2153
Phone: 02 8824 9122
Fax: 02 8824 6487
www.heatmaster.com.au
AUSTRALIAN
HOME HEATING
ASSOCIATION INC.
Installation of fireboxesInstallation of fireboxes
450mm
Tiled Floor Protector
(Do not block air intake
at bottom of healer)
*Ensure log grate is
suspended on angled
brackets to allow ashtray
to easily slide in and out
Suspended grate.
Easy to clean
ashtray
Non combustible
decorative
front cover
Selected lining
Mantel shelf
A
B
25 mm
A 6.0 mm
Tile over "lc" sheet as required
(NOTE:tiles are not to block air
intake of heater, therefore make
allowances for the setdown
B 1.0 mm
Steel sheet in between
fibre cement sheets
A 6.0 mm
Fibre cement sheet
Cut away view
Screw hearth
base to floor via
metal screws
25 mm Non combustable pocket at 450 cts. max
combustable Flooring
Floor
Non combustable pocket
Fibre cement sheets
Steel sheet
25mm
Square
tubing
200 mm min.
25 mm min.
A
B
350
min.
Firebox
Line of hearth
C
B
DE F
G
E
H
J
K
Flue Centre
Back
Front of unit
A
2
C
Front
Wall
ELEVATION VIEW
PLAN VIEW
150 x 50
or 100 x 50
on edge
100
25 25
25 25
25
Timber on edge
25mm clearances
on edge
Heatmaster fully insulated firebox "A Series".
Suitable for timber or brick installation.
The Heatmaster open fireplace system comes as a fully self-contained
fireplace kit. The firebox, log grate, ashtray, flues and cowl are the
basic components (Fig 1A). When installing your Heatmaster fireplace
please be sure to read the following carefully and to comply
with all clearances. Full specifications are available
upon request.
3
Hearth details
Hearth details for combustible flooring.
The hearth required under the Heatmaster firebox consists of two sheets of
6mm thick fibre-cement with a 1mm thick sheet of steel between them. It
must be spaced off the floor with non-combustible spaces (square tubing)
to give a 25mm ventilated air gap (Fig 2A). It should extend 350mm
in front, 25mm behind and 200mm either side of the
firebox opening. (Fig 2B)
Model No A450 A650 A750 A900
Height from non 770mm 780mm 780mm 840mm
combustible floor
Width 645mm 890mm 960mm 1110mm
Depth “C” 430mm 505mm 530mm 600mm
Fig 1B - Min. Framing Dimensions on
Non-combustible floor
Fig 1A - Dimensions
Fig 1A - Flue System sizes and Specifications
Fig 2C - Installing your Heatmaster step by step
Fig 2A - Hearth Installation
Fig 2B - Hearth Installation
Fig 2D - Finishing your Heatmaster intallation
Model No A450 A650 A750 A900
Height from 808mm 818mm 818mm 878mm
combustible floor
Width 645mm 890mm 960mm 1110mm
Depth “C” 430mm 505mm 530mm 600mm
Model No A450 A650 A750 A900
Inner Flue 150mm 180mm 200mm 200mm
Outer Flue 200mm 230mm 250mm 250mm
Model No A B C D E F G H J K
A450 595mm 395mm 670mm 195mm 205mm 195mm 90mm 100mm 195mm 200mm
A650 840mm 470mm 680mm 315mm 205mm 315mm 155mm 110mm 255mm 215mm
A750 910mm 495mm 680mm 325mm 260mm 325mm 140mm 90mm 270mm 225mm
A900 1060mm 565mm 740mm 400mm 260mm 400mm 180mm 125mm 315mm 250mm
Fig 1B - Min. Framing Dimensions using standard
hearth (fig 2A) on combustible floor
Fig 1B
Fig 1A
STEP 1 STEP 2
STEP 3
Model No width ‘A’ depth ‘B’
A450 995mm 770mm
A650 1240mm 845mm
A750 1310mm 870mm
A900 1460mm 940mm
Timber Installation. Fully insulated Models
A step by step guide to installing "A series" Heatmaster.
Step four.
Select one of our many finishing options.
A wide range of stone, marble, cast iron or
steel fascias and mantelpieces are available.
Step one.
After selecting your
Heatmaster unit and installing
your hearth (see above
diagram fig 2A) erect frame
work with the appropriate
clearance (see timber
framing specificationfig 1B).
Step two.
Install selected insulated
"A series" Heatmaster unit
along with flues (see Flue
detail diagram fig 3A).
Step three.
Enclose framing with
plasterboard/gyprock or
timber paneling, ensuring
approved clearances are
maintained.
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