HARDY MANUFACTURING CO., INC (MODEL H25) PAGE 22
SECTION VI
HEATER OPERATION
6-1 Firing the Heater
Start the fire as you would in any other wood heater. Do not use petroleum
products to start a fire. After you get an initial fire started, always stack the wood in
the fire box straight. Do not cross the wood because this can cause the fire to go
out. Any time you add wood, fill the fire box completely. The heater will burn only as
much wood as is needed to keep the water hot.
CAUTION: ALWAYS OPEN THE BOTTOM DOOR BEFORE YOU OPEN THE TOP DOOR.
6-2 Water Temperature
In the back of the heater is a hot water aquastat. When power is supplied to the
terminal strip the aquastat will send power to the damper system and draft blower
as long as the heater water is below the setpoint of the aquastat. This setpoint is
factory set at 170 to 180 degrees. If your heater does not operate correctly at these
temperatures contact your authorized Hardy dealer for temperature adjustments.
6-3 Wood Usage
Never leave the doors open unattended because it will cause excessive wood
consumption and could possibly damage the heater. If the heater is burning more
wood than usual, check the seal around the front doors. If the seal is bad it will
need replacing. Call your local Hardy dealer and order rope and silicone for the
firebox or ash door. The fire in the heater must be out to seal the door. With door
still mounted on the heater, scrape the old silicone out of the groove. Run a small
bead of silicone in the groove of the door. Start installing the rope at the top edge of
the wide groove (next to the hinges) running down the hinge side and continue
around the door. Make sure the ends of the rope join together in the final corner,
cut off any excess rope. Fill in the corners with silicone.
6-4 Moisture in the Firebox
On a new heater or the first time you start a fire each year, you will probably think
you have a leak in the firebox. The firebox walls will sweat and water will run down
the side. This can also happen if the water temperature drops below 100’F in the
winter. This drop in temperature can be caused by improper burning due to
stopped up grates. If you see moisture in the firebox, wait three days before you
get alarmed. If it continues, check to see if you are burning green wood. Green
wood will create a lot of moisture in the firebox, even to the extent that water can
get as high as an inch or two in the ash pan.
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