Lennox Hearth WHITFIELD 30 FS-2 User Manual

Page 20

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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE

20

Fuel Delivery Rate

The heat select button manages the fuel delivery rate by controlling the
amount of time the auger motor will run as follows:

Feed
Rate
Setting

Auger Motor
ON/OFF Time
(seconds)

* Lb.’s
Per Hour
Fuel Delivery

Approximate

BTU Per Hour
Fuel Delivery

BurnTime
(hours)

Low =

1 on/5.40 off

1.5 Lb.’s hr.

13,000 BTU/hr

37

Med.=

1 on/3.30 off

2.5 Lb.’s/hr.

21,000 BTU/hr

22

High =

1 on/1.75 off

3.8 Lb.’s/hr.

32,000 BTU/hr

15

Note: Maximum hopper capacity is 55 lb.’s

Table 7 - Fuel Delivery Rate, Profi le

®

20 FS-2

Feed
Rate
Setting

Auger Motor
ON/OFF Time
(seconds)

* Lb.’s
Per Hour
Fuel Delivery

Approximate

BTU Per Hour
Fuel Delivery

BurnTime
(hours)

Low =

1 on/4.50 off

1.7 Lb.’s/hr

14,000 BTU/hr

41

Med.=

1 on/1.90 off

2.6 Lb.’s/hr.

22,000 BTU/hr

27

High =

1 on/1.15 off

4.5 Lb.’s/hr

38,000 BTU/hr

16

Note: Maximum hopper capacity is 70 lb.’s

Table 8 - Fuel Delivery Rate, Profi le 30 FS-2

Feed
Rate
Setting

Auger Motor
ON/OFF Time
(seconds)

* Lb.’s
Per Hour
Fuel Delivery

Approximate

BTU Per Hour
Fuel Delivery

BurnTime
(hours)

Low =

1 on/4.50 off

1.7 Lb.’s/hr

14,000 BTU/hr

30

Med.=

1 on/1.90 off

2.6 Lb.’s/hr.

22,000 BTU/hr

20

High =

1 on/1.15 off

4.5 Lb.’s/hr

38,000 BTU/hr

11

Note: Maximum hopper capacity is 50 lb.’s

Table 9 - Fuel Delivery Rate, Profi le 30 INS-2

* Feed rates are approximations only. Actual feed rate will vary

depending on size, quality and length of fuel used and variations
in line voltage.

Estimated heat input based on fuel value of 8400 BTU per lb. of

fuel.

Your pellet stove can be operated in either the manual or automatic mode.
The manual mode is used when operating without a thermostat. The auto-
matic mode is used when utilizing a wall thermostat. When utilizing the
thermostat capability the burn time can be extended dramatically depend-
ing on thermostat setting. Note: It is normal for some ash to build up on
the inner glass surface at the lower burn settings.

Initial Start-Up / Empty Hopper or Feed chute:

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. The control
board is set to deliver fuel for approximately 2-1/2 minutes during start-
up, which, with a fully primed auger, will provide the appropriate amount
of fuel for ignition.

When fi rst starting your pellet appliance, it will be necessary to prime the
auger. To prime the auger you need to fi rst fi ll the hopper with pellets,
and press the ON/OFF button on the control board. Wait approximately
2-1/2 minutes and turn the control board OFF and then back ON again.
Wait an additional 2-1/2 minutes (if necessary) and continue this process
until fuel begins to fall into the UltraGrate™. Remember, different brand
fuels feed at different rates.

Once fuel starts to enter the UltraGrate™, turn the stove OFF and then back
ON. The auger should now be primed and the stove should deliver enough
fuel for proper ignition. It may be necessary to follow these procedures
in the event that the hopper runs completely out of fuel.

Manual Operation:

Pressing the stove ON/OFF button initiates the start-up cycle. The green
ON/OFF light, near the top of the control board, will light up to indicate the
“on” status. The fan speeds and pellet feeds are fi xed during this time to
provide appropriate ignition. The Fastfi re™ igniter system will light the
pellets feeding to the UltraGrate™, after about 3 minutes. The start-up
cycle is in effect for approximately 2 minutes after fl ame is detected in
the UltraGrate™. A photoeye monitors the existence of fl ame. After the
start-up cycle your stove will be in the run mode. At this point the stove
will operate with the heat output (heat select button) and blower settings
(blower select button) selected. These settings can be selected either
during or after the start-up cycle. Pressing the stove ON/OFF button during
the run mode will initiate the shut down cycle. The ON/OFF indicator
light will turn off. The pellets will stop feeding and the blowers will run
at a fi xed speed for approximately 10 minutes. At this point your stove
is safely shut down and can ONLY be restarted by pressing the stove
ON/OFF button again.

Automatic Operation:

Your stove is capable of running in an automatic mode with the use of
a wall thermostat.

For the thermostat to control the operation of the stove, the “ON” status
must be active on the stove’s ON/OFF button. The thermostat will establish
either a demand mode or a stand-by mode. The thermostat should be
set for the desired room temperature. If the room temperature drops
below the level on the thermostat the stove will automatically begin the
start-up cycle, as explained above in the Manual Operation section. Once
the start-up cycle is completed the stove will operate in whatever heat and
blower setting you have selected. For best operation under thermostat
control, the Medium or High settings recommended. When the desired
room temperature is reached the stove will automatically go into the shut
down cycle. The pellet feed will stop and the blowers will continue for
a controlled time allowing safe shut down of your stove. All lights will
remain on when the thermostat is open. The heat and blower settings can
be changed at any time, but only take affect during the run mode. When
the temperature in the room drops to the level set at the thermostat, the
stove will again begin the start-up cycle and resume automatic operation
in the demand mode.

Note: If the stove ON/OFF button is pressed while the thermostat is in the
standby mode the stove will not restart until the thermostat closes.

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