Lennox Cascade Installation And Operation Manual page 18

Control Board
Heat Output Switch - The Heat Output switch activates both the con-
vection and combustion blowers and the auger motor. If the exhaust
does not reach operation temperature within 25 minutes, the stove will
automatically shut down. If this occurs, repeat the lighting procedure
(pre-lighting instructions).
"OFF" position - The "Off" position on the Heat Output switch will turn
the stove off by turning off the auger motor. The remaining fuel in the
grate will safely burn up. Once the stove has cooled sufficiently the
blowers will shut off automatically.
"HIGH HEAT" position - The "High Heat" position on the Heat Output
switch will increase the fuel feed rate and blower speed for maximum
heat output.
"LOW HEAT" position - The "Low Heat" position on the Heat Output
switch will decrease the fuel feed rate and blower speed.
Auger "On" Light - The red L.E.D. light on the control panel indicates
when there is power to the auger motor. Under normal operation, this
light will blink on and off.
Fuel Feed Trim Control - The fuel feed trim control on the control panel
should be used when the damper control will not correct a poor combus-
tion problem. Turning the trim control counter clockwise will decrease
the amount of fuel entering the UltraGrate™ and turning the trim control
clockwise will increase the amount of fuel entering the UltraGrate. The
trim adjustments compensate for fuel differences. Factory set "ON" time
is 1.9 seconds. The trim range is 1.6 to 4.5 seconds. Factory "OFF" time
for low is fixed at 4.2 seconds and for high it is fixed at 2 seconds.
Note: This control board is not thermostat or igniter capable.
Heat Output
Figure 21 - Control Board
LENNOX
09-0594
Fuel Delivery Rate
The feed rate switch manages the fuel delivery rate by controlling the
amount of time the auger motor will run as follows:
* Feed rates are approximations only. Actual feed rate will vary depend-
ing on size, quality and length of fuel used and variations in line volt-
age.
** Estimated heat input based on fuel value of 8,400 BTU per lb. of
fuel.
Note: It is normal for some ash to build up on the inner glass surface at
the lower burn settings.
18
Feed
Rate
Setting
Low =
High =
Table 4
Initial Start-up / Empty Hopper Or Feed Tube:
During an initial start-up, or in the case where the hopper has run out of
fuel, it will be necessary to prime the auger feed system.
To prime the auger feed tube:
1. Ensure all packing material and foreign objects are removed from the
2. Move the Heat Output switch on the control panel to the "HIGH HEAT"
3. Look through the combustion chamber door and when you can see
Starting Your Pellet Stove
1. After the auger is fully primed, adjust the Heat Output switch to the
2. Place a small amount of an approved (non-volatile) gel fire starter on
Auger On Indicator
3. Light the fire starter in the UltraGrate with a match and close the door.
4. After approximately 10 seconds, move the Heat Output switch on the
5. After the fire is burning well, adjust the Heat Output switch to the
Remember, different brand fuels feed at different rates.
Turning Off Your Stove
Move the Heat Output switch to the "OFF" position. This will stop the
fuel feed and any remaining fuel in the grate will safely burn up. The
blowers will continue to run until the stove has cooled off sufficiently
and will then shut off automatically.
• Never empty pellets from the Burn-Pot into the hopper.
Pellets that may appear to be cool may retain enough
heat to ignite other pellets resulting in smoke or fire
damage.
• DO NOT OVERFIRE THIS STOVE. This may cause
serious damage to your stove and void your warranty.
It also may create a fire hazard in your home. IF ANY
EXTERNAL PART OF THE UNIT BEGINS TO GLOW, YOU
ARE OVERFIRING. Immediately slide the knob to the
"OFF" position on the control board.
Fuel Delivery Rate
Auger Motor Auger "ON
ON/OFF Time" Trim
Time (seconds)
(seconds)
1.9 on / 4. 1.6 to 4.5
off (+/- 5%) seconds
1.9 on /  1.6 to 4.5
off (+/- 5%) seconds
hopper. Fill the hopper with recommended pellet fuel and plug the
stove into the wall outlet.
position to activate the auger and blowers.
the first pellets dropping into the grate, the auger is fully primed. This
will take up to 10 minutes.
"OFF" position.
top of the pellets in the UltraGrate (if chips are used as firestarter, place
chips in UltraGrate first then place pellets on top). Consult with your
authorized Lennox Hearth Products dealer for approved fire starting
products). DO NOT USE FLAMMABLE LIQUIDS TO START YOUR
STOVE.
control panel to the "LOW HEAT" position. You will notice that the fire
will become active and there will be air coming from the Heat Exchange
Tubes and pellets will now begin to feed into the UltraGrate.
desired setting. Adjust the damper control if necessary for proper
combustion. Look for a brisk, bright yellow to whitish flame.
WARNINGS
* Lb.'s per **Approx- Burn
hour fuel imate BTU Time
delivery per hour fuel (hours)
delivery
1.5 Lb.'s 1,600 BTU 40
/ hr. / hr
3.5 Lb.'s 30,000 BTU 17
/ hr. / hr