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3.5.1 CHOOSING THE MAXIMUM INPUT (BTU)
Your Caddy Alterna has an input that can reach up to 120,000 BTU. Since the efficiency of the furnace is 81.2%,
the output can be calculated by multiplying the input by 0.812. In order to reduce cycling of the furnace, the BTU
input can be adjusted by the installer based on the size of the house. There are five selections to choose from. The
factory default BTU is programmed at 100,000. In order to change the BTU input, refer to the operation tree at the
beginning of this section.
3.5.2 CHOOSING THE PILOT LAG TIME
When the temperature set on the wall thermostat is achieved, a signal is sent to your furnace. The furnaces then
put itself in a pilot mode. On the pilot mode, the furnace operates at its lowest feed rate. It feeds approximately 2
pounds of pellets per hour, the equivalent of 17,500 BTU. You can select the pilot lag time. The pilot lag time is the
time the furnace will wait on the pilot mode before shutting down if there is no more thermostatic heat demand. You
can choose between 30 minutes, 45 minutes, one hour, and continuous. If you choose continuous and there is no
heat demand, the furnace will stay on pilot until there is no more pellets in the hopper. The factory default lag time is
programmed at one hour. In order to change the pilot lag time, refer to the operation tree at the beginning of this
section.
3.5.3 FILLING-UP THE AUGER
When the furnace runs out of pellets, it empties the auger housing. In order to start the furnace again, you need to
fill the auger in order to bring pellets to the burn pot for ignition. This process takes approximately 3 minutes and a
function has been programmed on the LCD interface. In order to fill the auger, refer to the operation tree at the end
of this section. When you press the "feed auger" icon, the auger will turn continuously for one minute. Therefore, if
the auger is completely empty, you may need to press the "feed auger" button up to 3 times before you completely
fill the auger and burn pot with pellets.
3.5.4 STARTING THE FURNACE
Once the hopper is full of pellets, the auger is filled, and the firebox door is closed, you can start the furnace. In
order to start the furnace, simply press the round "on/off" icon on the main status page.
3.5.5 CHOOSING MANUAL OR THERMOSTATIC MODE
In the manual mode, your furnace will run continuously at the BTU input selected until the furnace runs out of pellets.
In most cases, however, you will be using your furnace on the thermostatic mode. That is, the furnace will only
operate at its maximum BTU input when the thermostat is on demand. In order to change from thermostatic mode to
manual mode (and vice-versa), refer to the operation tree at the beginning of this section.
3.5.6 SELECTING LANGUAGE
You can choose between English, French, and Spanish. In order to change the language, refer to the operation tree
at the beginning of this section.
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