Lennox Hearth 32FS operation manual Control Board Operation

Control Board Operation

START BUTTON

The "START" Button turns on the pellet stove.

Note: If the fuel feed trim or combustion air trim needs to be adjusted, contact your dealer or qualified technician to calibrate internal software. The trim controls should only be adjusted for the proper flame if all other options did not achieve proper adjustment. It is recommended that the damper be used to fine-tune your stove to your particular fuel and installation configuration (see Damper Adjustment on Page 9 and Damper Adjustment Guidelines on Page 20).

If the exhaust does not reach operating tempera- ture within 30 minutes, the stove will automati- cally shut down. The pellet stove can be restarted by pushing the "START" Button again.

RESTART

AUGER ON (green LED) - The auger restarts and returns to delivering fuel to the UltraGrate™.

STOP BUTTON

Note: The "START" Button has to be activated to give power to the AUGER ON/OFF button.

The "STOP" button turns the pellet stove OFF. When the LED is green, the auger is ON.

SHUT DOWN (LED off) - Auger turns OFF and fuel delivery stops. The blowers will continue to operate until the stove has cooled sufficiently. Stove enters shut down mode.

HEAT OUTPUT BUTTON

When not using a wall thermostat, the "HEAT OUTPUT" button provides the ability to burn at five separate settings from low (#1) to high (#5). The "HEAT OUTPUT" button regulates the fuel feed setting and the combustion air supply simultaneously.

Combustion

Blower Trim

Heat Output	COMBUSTION
	O
	AIR		Start
Button	(-) (+)
			Button
Convection	HEAT	START
(room air)
	OUTPUT		Heat Output
Blower
Button			LEDs - Red
			(5 places)
	BLOWER
Convection		PELLET	Auger LED
(room air)		FEED
		O	Green = On
Blower LEDs		(-) (+)
		FEEDING
- Green
(5 places)
		STOP	Stop
m5 - High			Button

m4 - Med. High
m3	- Medium	HEARTH PRODUCTS
m2	- Med. Low

m1 - Low

Figure 22 - Control Board

Fuel Delivery Rate

4Position Connector

Main
Wire	Convection
Harness
Connector	Blower
	Speed Trim

P/N
Label	To Thermostat
Location	Terminal

Fuse

Figure 23 - Back Side of Control Board

18

Each time the "HEAT OUTPUT" button is pressed the heat output will advance to a higher setting. When at the highest setting (#5), if the button is pressed again it will go back to the lowest setting. Settings can be changed at any time but will only take affect after the start-up cycle is complete.

CONVECTION (ROOM AIR) BLOWER BUTTON

The "BLOWER" button operates the convection blower. This will change the flow of hot air into the room. Five settings are available from low (#1) to high (#5). When the "BLOWER" button is pressed, the green indicator light will scroll from low to high. When at the highest setting (#5), if the button is pressed again it will go back to the lowest setting.

When the "HEAT OUTPUT" button is on position #5, the lowest blower setting is #3. When the heat output button is on position #4, the lowest blower setting #2. This is a safety precaution to protect against overheating. Blower settings can be changed at any time, but will only take affect after the start-up cycle is complete.

Note: The control board has an internal memory which recalls the last setting prior to loss of power.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE

The "HEAT OUTPUT" button manages the fuel delivery rate by controlling the amount of time the auger motor will run as follows:

Heat Output	Auger Motor OFF/ON	* Lb.’s Per Hour	w Approximate BTU Per	Burn Time
Setting	Time (seconds)	Fuel Delivery	Hour Fuel Delivery	(hours)
(#5) High =	1.6 / 0.6	3.8 Lb.'s /hr.	32,000 BTU/hr	15
(#4) Med.High =	1.8 / 0.6	3.0 Lb.'s /hr.	25,000 BTU/hr	18
(#3) Med.=	1.9 / 0.6	2.5 Lb.'s /hr.	21,000 BTU/hr	22
(#2) Med.Low =	2.9 / 0.6	2.0 Lb.'s /hr.	17,000 BTU/hr	31
(#1) Low =	3.8 / 0.6	1.5 Lb.’s hr.	13,000 BTU/hr	37
Table 5 - Model Montage™ 32FS		Note: Maximum hopper capacity is 55 lb.’s

*Feed rates are approximations only. Actual feed rate will vary depending on size, quality and length of fuel used and variations in line voltage.

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

WARNINGS

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 press the “STOP” button on the control board.