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level fire is more effective, particularly in regard to
water heating efficiency. The maximum fuel level is
up to the front lip of the coal grate and angled back-
wards at approximately 150
It is not unusual for some condensation to form on
the boiler when the unit is first lit. Do not use the cir-
culating pump until the water in the boiler has heat-
ed up. If, when the pump comes on, the return water
temperature is too low, condensation may persist.
In this case, allow the system to warm up gradually
by turning on the radiators in the central heating cir-
cuit one by one. Always be prepared for condensa-
tion when lighting from cold. To dry out condensa-
tion run the appliance for a time with the spin valve
and back air valve open, then reset them.
Attention should be paid to the amount of ash
that is allowed to build up in the firebox.
The ash should be removed from a high burning
coal fire after 6 hours, to prevent damaging or
burning out of the grate.
USE OF BACK AIR VALVE
This air inlet is situated on the back of the stove to
supply primary air through the back insulating plate
to the fire. Its purpose is to assist the combustion
activity at the back of the fire chamber.
The Back Air Valve has four settings: fully closed
1 /2
(6.4mm),
" (12.7mm), and fully opened. These
settings are used in conjunction with spin valve set-
tings of similar magnitude to give low, medium or
high burning rates. A little practice will familiarise
you with the best settings for your needs
WOODBURNING
Function Diagram
To burn wood, peat briquettes, bog peat or synthet-
ic wood, burn directly on hearth, do not use a grate
or elevate fire. "Never use gasoline, gasoline type
lantern fuel, kerosene, charcoal lighter fluid or simi-
lar liquids to start or 'freshen up' a fire in this heater.
Keep all liquids well away from the heater while it is
o
.
1 /4
.
Spin
Valve
Control
Handle
in use."
Operate stove only with fuelling door
closed.
LIGHTING
Lay a few crumbled sheets of paper on the hearth,
then a few small sticks on the kindling to get the fire
started.
Close the door, and close the Back Air
Valve and open the Spin Valve control ALL THE
WAY.
The fire will catch the kindling quickly, after which the
full size logs may be placed on top. After the logs
have caught fire adjust the Air controls front and
back to suit the heat requirements.
The logs will burn slowly towards the rear of the fire
chamber and the rate of burning is adjustable at all
times by means of the Air controls. The more air
(wider opening) the faster the burning. Do not over-
fire the stove.
Once they are well lighted, the logs need little atten-
tion. It is recommended that the draught be reduced
(smaller opening) after the logs are well lighted as
they will require little draught to maintain combus-
tion.
When the fire is reduced to embers, open the door
and carefully rake the embers towards the front of
the fire chamber and reload with logs.
"
OVERNIGHT BURNING
Overnight burning is controlled by closing the front
spin valve fully or leaving it about half a turn open
depending on draught conditions.
Valve is fully closed by pushing the control rod
underneath the ash tray fully home.
MAINTENANCE
Inspect the chimney flue weekly until a safe fre-
quency is established. The burning of wood, partic-
ularly if it is not seasoned, may cause build up of
creosote. If creosote has accumulated it should be
removed to reduce the risk of a chimney fire. Should
this creosote become ignited an extremely hot chim-
ney fire can result.
DISPOSAL OF ASHES
Remove ashes carefully.
Ashes should be placed in a metal container with a
tight-fitting lid. The closed container of ashes should
be placed on a non-combustible floor or on the
ground, well away from all combustible materials,
6
The Back Air
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