Operating The Furnace; Filling The Furnace With Water; Firing The Furnace - Heatmaster G100 Operation And Maintenance Manual

G Series Outdoor Furnaces

OPERATING THE FURNACE

FILLING THE FURNACE WITH WATER

Your furnace has a vent pipe that protrudes through the roof which is
used to fill the furnace with water.
CAUTION: Do not fire furnace until it is filled with water. Allow
furnace to run for 2 days and check system water levels and fittings
for leaks. Take your initial water sample at this time and be sure that
it is sent in for testing.
IMPORTANT: To properly maintain your furnace, test your water
every year. Water treatment may need to be added or your furnace
may need to be drained and flushed and water treatment added. For
information on acquiring this product refer to your local dealer.
Hint: It is recommended that a fill valve be installed inline in the
building you're heating with a shut off valve or one way check valve
(Check local codes for proper installation) to prevent back flow.
Filling the furnace with the inline valve pushes all the air towards the furnace and out of
the vent. Because this furnace is an open system it is normal that water will have to be
added annually, depending on the circumstances (6 to 10 gallons is not unusual).
Hint: If any part of the system is higher than the furnace a bleeder valve should
be used to make sure all air is removed.
ATTENTION: Your water level will rise as the temperature of the water rises and
fall as the water temperature falls. If your water level falls to a low level, first check
your water temperature before filling with water again.

FIRING THE FURNACE

These furnaces have been specifically designed to burn wood and as such, are not in-
tended for burning any other fuels such as rubber, material treated with petroleum
products, leaves, paper products, cardboard, plastic or garbage. Burning these fuels in
your furnace will result in the warranty on the furnace being voided.
Burn wood only. Load carefully or damage may result.
On starting an initial fire, use kindling wood and paper, if required. Add heavier fuel
gradually until a suitable fire is achieved. The furnace will continue to feed an air sup-
ply to the fire until your aqua stat shut off temperature is reached.
NOTE: Your furnace is equipped with a low temperature cut off feature. Anytime
the water temperature drops below 120ºF, including first firing of the furnace, you will
need to activate the low temperature bypass function. The black button (labelled Cold
Start) is located on the control panel. When pushed, the furnace will allow the fan to
kick on to start your fire.
ATTENTION: On the initial start up, the water jacket will reach what is called the
dew point. This creates a sweating inside the fire box which may last a couple of days
and is normal.
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