Lennox Hearth II-T C FS Component Definitions, Air Wash, Auger Motor, Hopper, Pressure Switch

Models: II-T C FS II-T C INS

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COMPONENT DEFINITIONS

AIR WASH

To inhibit buildup of soot on the door glass, air is deliv- ered to the glass through an air wash system located in the doorframe surrounding the glass.

AUGER

It transfers the fuel down the burner tube into the firepot.

AUGER MOTOR

Motor specifications are: .4 Amp, 1 rpm (revolutions per minute). It drives the auger to deliver fuel to firepot.

BLOWER, ROOM AIR (CONVECTION)

The blower function is to transfer the heat from the appli- ance to heat the room air.

BLOWER, EXHAUST (DRAFT INDUCER/COMBUSTION) It has a radial impeller to deliver more air to the firepot. It pulls air into the firepot by creating a negative pressure. This is done by extracting the exhaust gases out of the firebox and pushing the exhaust downstream to the flue exit.

DISCS, INLET & CONVECTION HIGH LIMIT

DISC, HIGH LIMIT (L250-30F, N / C)

There are 2 of these discs on this model. If a tempera- ture reaches 250° F., the high limit auto reset will “trip” and stop the flow of electricity to the auger motor. The discs will not automatically reset until it has cooled below 220° F).

Disc for Room Air Blower – This disc is located on the Room Air Blower jacket and is designed to detect an overfire condition.

Disc for Combustion Air Inlet – This disc is lo- cated on the combustion air inlet and is designed to

detect reversed flow. If negative pressure in the dwelling (i.e. An extremely tight house which may not supply adequate combustion and ventilation air) causes the exhaust to pull back from the combus- tion air inlet, the heat from the exhaust will result in heat activation of this disc.

DISC, LOW LIMIT (Ceramic, F140-30F, N / O*)

This disc is designed to shut down the stove (auger mo- tor and both blowers) if it does not sense the heat of a fire.

HOPPER

The hopper is where the pellets are stored.

HEAT OUTPUT BUTTON

This is the main power button, which controls power to the feed system auger motor and Exhaust Blower. It has 5 feed rate settings, which controls the burn rate.

PRESSURE SWITCH

The Positive Pressure Switch is located on the Exhaust housing and is designed to shut down the auger motor in the event of flue blockage. Some other possible causes are as follows:

The venting system is obstructed.

High altitude or other misc. environmental conditions affecting exhaust flow.

Improper venting system.

ULTRAGRATETM

Burn grate receptacle in firebox where pellets are deliv- ered by auger motor system and burned.

*N / C = Normally Closed N / O = Normally Open

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Lennox Hearth II-T C FS, II-T C INS Component Definitions, Air Wash, Auger Motor, Blower, Room Air Convection, Hopper