Adding Heat Load - Central Boiler Classic CL 4030 Owner's Manual

When adding wood to the firebox, be careful not to get pinched between the wood and
the door frame or any part of the outdoor furnace. Use extreme care with large pieces
of wood that may be difficult to handle.
5. Close and secure the firebox door. Do not use the firebox door to ram
wood into the outdoor furnace. Do not operate the outdoor furnace
with the firebox door open. Combustion in the firebox cannot be
controlled if the firebox door is left open or unsecured. If the firebox door
is left open, an uncontrolled burn will result. To return to a controlled
burn, close and secure the door.

Adding Heat Load

NOTE: During initial start-up, a considerable amount of moisture from condensation will
collect inside the firebox. This is normal and the moisture will evaporate after the first
couple of fuel loads.
1. With no heat load draw in the system, monitor the operation of the
outdoor furnace until the water temperature reaches the water temperature
setpoint.
2. Turn on the pump(s); then start a heat load draw in the system by turning
up the thermostat in the house. Monitor the outdoor furnace for one hour
or until another cycle occurs (i.e., outdoor furnace goes from combustion
to idle mode). If the water temperature drops and does not recover to the
water temperature setpoint within one hour of starting the heat load draw,
the heat load draw should be shut off, allowing the furnace to cycle to the
idle mode again.
NOTE: The outdoor furnace will not operate satisfactorily if the heat load is higher than
the output capacity of the outdoor furnace.
3. At this point, there should be glowing coals established in the bottom of
the firebox. The firebox can be filled with dry, seasoned split wood.
CLASSIC OUTDOOR FURNACE • OWNER'S MANUAL
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