insulating blocks to allow air to circulate beneath may be used. There must be at least a
12mm high gap unobstructed along at least two thirds of each side, and care must be
taken to ensure that this amount of space will not be encroached on by laying carpet
etc. To be safe, a 25mm high gap is recommended. If preferred, instead of having a gap
under the concrete slab, it may be poured on top of two sheets of Micore 160 lying
directly on the floor. If cast in place, an impermeable sheet must be laid on top of the
Micore to prevent water damage from the concrete mix. Constructions which are NOT
suitable as insulating hearths are bricks and concrete when they are in contact with heat
sensitive flooring material.
In all cases, in both countries, a durable top surface will be needed to resist damage
from dropped embers. Obvious choices are slate, bricks and ceramic tiles. Gaps in the
top surfacing material must be grouted to prevent embers from penetrating. A trim
moulding will provide a neat edge finish.
Floor
Australia — Not less than 18mm thickness of fibre cement board
New Zealand — Two sheets of MICORE160 or
one sheet of WOODTEX (35 thick)
Ceramic tiles
Trim moulding
Recommended hearth constructions are:-
FITTING A WATER COIL
Water heating coils can be fitted to Arcadia and Utopia heaters. The pipe attachment
positions are shown below.
B
Heater
A
B
Arcadia
Utopia
280
310
590
520
C
Alternate flue position at rear
C
495
550
All plumbing work must meet the requirements of local Building Codes. Pipe
connections are 1” BSP. Special piping methods must be followed to ensure effective
circulation, and the hot water cylinder will need to have an internal riser pipe to two
thirds of the cylinder height to discourage unwanted water circulation through the
piping system when the heater is not burning. This internal riser pipe must be connected
to the return pipe from the heater.
Piping instructions are included with the kit. Two safety requirements must be stressed.
THERE MUST BE NO NON-RETURN OR SHUT-OFF VALVES IN THE PIPES
BETWEEN THE HEATER AND THE STORAGE CYLINDER.
A HEATER FITTED WITH A WATER HEATING BOOSTER MUST NOT BE
FIRED UNLESS IT IS CONNECTED TO A VENTED STORAGE CYLINDER
FILLED WITH WATER FREE TO CIRCULATE.
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