Jetmaster UNIVERSAL, Installation & Operation Instructions, Page: 3 / 13

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1. HEARTH
Must be constructed from a non combustible material such as concrete, brick, or autoclaved
aerated lightweight concrete block.
• Models 400-700D must be minimum 26mm thick.
• Models 850 - 1500 must be minimum 100mm thick. This includes selected finish
such as ceramic tiles, marble or granite.
• Must project forward of aperture by a minimum of 300mm.
• Must project either side of aperture by a minimum of 200mm.
25mm MIN.
INSULATION
BRICKWORK
JETMASTER
300mm MIN.
200mm MIN.
JETMASTER
SELECTED FINISH
BRICK ON EDGE BRICK ON FLAT
300mm MIN
100mm MIN (Models 850-1500)
26mm MIN (Models 400-700D)
2. FLUE
• Single skin flue (stainless steel) must be enclosed with single skin brickwork,
concrete, or autoclaved aerated concrete block.
• Twin skin flues (stainless steel inner, and galvanised outer) can either be left
exposed or enclosed with stud walls and sheet plaster or timber.
A minimum of 50mm clearance must be maintained between the outer flue and
any combustibles. If using double skin flues space inner and outer flues using
3x25mm self tapping screws through outer casing at bottom, at each join and
at top. Also ensure that flues are ventilated at top and bottom, and when using
a cover cone drill a series of holes into the outer flue below the cover cone to
ensure adequate ventilation.
• Fit cowl to flue or chimney breast.
3. ENCLOSURE
• A minimum of single skin brickwork, concrete, or autoclaved aerated concrete
block must surround the firebox and gather at back, sides and front. A minimum
of 25mm air gap filled with insulation material provided must be maintained.
Summary of Minimum Jetmaster Installation Specs Summary of Minimum Jetmaster Installation Specs
TWIN SKIN FLUE
STAINLESS INNER
GALVANISED OUTER
50mm MIN.
CLEARANCE
SINGLE SKIN
STAINLESS FLUE