Yukon Advanced Optics Oil Furnace User Manual

OWNER'S

MANUAL

• Assembly

• Installation

• Operation

• Repair Parts

• Maintenance Tips

Model No.

LWO-112 (Oil Fired)

LWG-112 (Gas Fired)

LWO-168 (Oil Fired)

LWG-168 (Gas Fired)

CAUTION:

Re a d Ru l e s An d

In s tr u c ti o ns

Ca r e f u l ly F o r

Sa f e Op e r a t i on

YUKON HUSKY/EAGLE I

YUKON POLAR/EAGLE II

IMPORTANT: Installation must be made in

accordance with NFPA, and state and local ordinances

which may differ from this installation manual.

Alpha American Co., 10 Industrial Blvd., Palisade, MN 56469

Oil/Wood - Gas/Wood

Warm Air Central Heating Furnaces

All furnaces in this owner's manual are
UL Listed in UL file #MH 11057

www.yukon-eagle.com 1-800-358-0060

FOR YOUR SAFETY:

If you smell gas:

1. Open windows

2. Do not touch electrical switches

3. Extinguish any open flame

4. Immediately call your gas supplier

FOR YOUR SAFETY:

Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.

DA NG ER

RISK OF FIRE OR EXPLOSION

Do not burn garbage, gasoline, drain oil, kerosene, thinners, etc.

WARNING

RISK OF FIRE

Tightly close the firing door and ash door during operation.

Do not operate with flue draft exceeding .03" W.C.

Do not store flammable materials within marked installation clearance.

Frequently inspect and clean soot and/or creosote from the heat exchanger,
smoke pipe, and chimney.

Do not connect this unit to a chimney flue serving another appliance.

CAUTION

BLACK SURFACES ARE HOT

Keep children away. Do not touch.

Before installing this
furnace, read and follow all
instructions in this manual.
It is recommended that a
heating professional installs

Questions?

Visit www.yukon-eagle.com

or call

or supervises the entire
installation of the furnace,
ducts, chimney, electrical
and gas or oil hook ups.

1-800-358-0060

For repair or replacement parts,

See back cover for details.

2

TABLE OF CONTENTS

INTRODUCTION

Safety Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2, 4

Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Furnace Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

PLAN YOUR INSTALLATION

Plan Your Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Locating the Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

INSTALLATION

Place Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Secondary Air Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Secondary Air Shut Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Draft Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Oil Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Gas Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Draw Collar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Damper Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Smoke Baffles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Installing the Fan and Limit Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Mounting Thermostats and Settings . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Fuel Tanks and Fuel Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Fume Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Wiring the Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

DS-103 Damper Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

24 Volt Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Connecting Smoke Pipe .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Barometric Draft Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Proper Chimneys and Draft Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27,28

Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Furnace Located in Confined Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

OPERATION

Oil Firing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Starting Burner after Ignition Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Gas Firing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Best Wood To Burn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Firing Wood with Gas or Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Miscellaneous Coal Burning Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Coal Firing Unit. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37-40

MAINTENANCE

Grate Care & Ash Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Smoke Pipe, Chimney & Secondary Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Blower Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Duct Work and Blower Speed Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Testing for Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Fire Brick Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Oil Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Miscellaneous Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49,50

Over Heating Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Exploded Views and Parts Lists. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . 52

Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

3

Safety Statements

STOP FOR SAFETY!

Safe assembly, operating and maintenance practices should always be

followed whenever using any equipment. Wherever you see the caution sign,

extra safety precautions should be taken.

You must stop, read, and carefully follow the safety instructions before proceeding.

READ THROUGH THE ENTIRE MANUAL

It is recommended to read through the entire manual before beginning your

installation and/or operating your furnace. Follow all steps exactly.

UL LABEL AND NFPA PRACTICES

Areas of this manual refer to Underwriters Laboratories (UL)

and the National Fire Protection Association (NFPA).

UL & NFPA are non-profit organizations. This furnace must be installed according to NFPA codes.

UL is the oldest and largest public safety testing laboratory in the world. All furnaces in this manual are Listed by
the UL. They have passed all safety and efficiency requirements for both gas and oil in the U.S. The UL Listing
label is also your assurance that UL employees inspect our furnaces during the manufacturing process. This can
happen several times a year on an unannounced basis.

NFPA Codes, Standards, recommended practices, and guides referred to in this document are approved by the
American National Standards Institute. State and local codes are adopted from these standards.

DANGERS-CAUTION-FIRE HAZARDS

(Burn wood logs or coal only)

Do not install a power humidifier on the warm air plenum.

Do not load wood above secondary air tube. Doing so will cause over-fire and damage to combustion

chamber could result.

Do not attempt to light a wood or coal fire when oil or gas vapors are present. An explosion or flashback

could cause personal injury.

Do not install on combustible floor.

Load wood or coal carefully or damage may result to fire brick or refractory pot liner.

Fire the oil or gas burner at least once each week during the heating season. This will insure clean nozzles

and electrodes.

Inspect air filter regularly. Clean or replace as necessary. Filter size is 20" x 25" x 1".

If an over-fire situation should occur, be sure ash door and fire door are closed. Turn thermostat down to
close primary air damper.

In the event of an electrical power failure, remove air filter and be sure ash door and fire door remain closed.

In the event of a soot or creosote fire, call your fire department immediately. Turn thermostat down to
close primary air damper and make sure ash door and fire door are closed.

4

Unpack and Check Your Cartons

INSPECT SHIPMENT

Your furnace is shipped complete in three cartons.
Note any damage to the shipping cartons. Remove all
items from your shipping cartons. Check all items
against the packing list below. Note any items lost or
damaged in shipment. Refer to the exploded view and
parts list in the back of the manual for the part names
and numbers of missing or damaged items. Keep the
small parts in the parts bag until you are ready to
install them.

PACKING LIST

1. Carton One: The basic furnace comes in the crate.

Inside the filter door, below the flue outlet, is the pre­assembled, circulating fan, motor, belt, drives and drip
shield. The air filter lies in a frame above the fan.
Inside the furnace wood-firing door are:

• Three wood grates (installed)

• Secondary air shut-off assembly

• Smoke pipe draw collar (Polar Unit Only)

• Primary air draft tube

• Door handle weldment and handle assembly for both
fire door and ash pan.

FIG. 1

Remove these items and set aside for later installation.

2. Carton Two: This accessory package contains the

following items:

• Secondary air intake cover

• Thermostats

• Barometric damper

• Fan and limit control

• Damper control unit

• Transformer

• Wiring harness

• Fume sensor (gas only)

• Owner's manual

• Warranty sheet

Remove these items and set aside for later installation.

3. Carton Three: The oil or gas burner is in this

carton. It is pre-assembled and ready for installation.

Questions? Visit www.yukon-eagle.com or call 1-800-358-0060

5

Furnace Features - Eagle I - Husky

YUKONTROL SOLID-STATE

u

FURNACE CONTROL This is the solid-state

control that coordinates the gas or oil burner
function with the wood/coal damper so that your
home is always comfortable using your choice of
fuels.

MORE HEAT EXCHANGE SURFACE

v

MEANS LESS HEAT UP THE CHIMNEY

The secondary heat exchanger is made up of type
304 Stainless Steel tubes, which the heat produced
by the furnace, must pass through before entering
the chimney. This feature increases the heating
surface to 54 square feet. Standard gas or oil
furnaces have only 25-30 square feet.

GAS BURNER OPTION FOR AUXILIARY

w

FUEL Our gas model comes with a Wayne P250

AF DIN hi-efficiency gas burner. This burner
features a Honeywell electronic ignition and gas
valve. It is certified by Underwriters Laboratories to
provide up to 80.1% steady state efficiency. It can
be switched from LP Gas to Natural Gas or visa­versa. This burner can be interchanged with our
Wayne model MSR oil burner at your option.

burner side. This firebrick not only protects the steel
from the extreme combustion temperatures in the
firebox, but it also retains a substantial amount of

heat after the wood/coal fire burns down.

AFTER-BURNER JET SYSTEM GIVES

{

MAXIMUM SOLID FUEL BURNING
EFFICIENCY Twenty percent of the air required

for proper coal/wood combustion is drawn in above
the firebox, and then distributed around the top of
the flame to create an afterburner effect. Forty
percent of the energy in wood/coal leaves the initial
flame in the form of an unburned gas (smoke). This
patented system burns these gases, thereby
substantially increasing the efficiency of the wood or
coal.

2 DIFFERENT STYLES OF HEAVY CAST

|

IRON GRATES It is imperative that 80 percent of

the air for combustion enters the firebox from below
a wood coal grate to insure an efficient and clean
burning fire. Our standard heavy cast iron grate is
adequate for a wood fire. A much heavier cast iron
shaker grate is also available as an option for dense

coal use.

THE OIL (OR GAS) BURNER FIRES INTO

x

AN ENGINEERED PYROLITE HIGH
TEMPERATURE CERAMIC CHAMBER
WHICH ASSURES COMPLETE
COMBUSTION This flame is then directed

horizontally into the wood/coal firebox to
automatically ignite those fuels. This design assures
the gas or oil burner to be free of any wood/coal
smoke from the fire box.

THE EAGLE I INCORPORATES AN EASY

y

ACCESS CLEAN-OUT DOOR TO
MAINTAIN TOP HEATING EFFICIENCY

This is an openable door which connects the four
secondary heat tubes to the flue pipe that leads to
the chimney. Keeping the inside of your furnace
clean insures high efficiency.

2-INCH THICK HI-TEMPERATURE

z

FIREBRICK SURROUNDS THE
WOOD/COAL FIRE The EAGLE I furnace

features 180 pounds of firebrick. It is 18 inches
high on the side opposite the burner and the
backside of the firebox. It is 9 inches high on the

OIL BURNER OPTION FOR AUXILIARY

}

FUEL If oil is your preference for a back-up fuel,

your burner will be a Wayne model MSR 321-009
hi-efficiency oil burner. Features are a Stainless
Steel flame retention head and Honeywell Premium
controls. It is certified by Underwriters Laboratories
to provide up to 80.1 % steady state efficiency. If at
some time in the future, you decide you would
rather have LP or Natural Gas as your backup fuel,
this burner can be interchanged with our Wayne

P250 AF DIN gas burner. (A nice insurance policy.)

AIR CIRCULATING BLOWER AND

~

MOTOR The EAGLE I is designed with 10 inch

wide, ten inch- diameter belt drive blower. This
oversized blower turns slower than ordinary
furnaces because of its large size. It is therefore
quieter than most furnaces, Each EAGLE I is
equipped with a premium Class A motor with Class
B insulation, which means it will operate in a higher
temperature atmosphere. This motor also features
a 1.35 service factor, which means it has 35% more
power than a standard motor of the same size. Up
to four tons (48,000 BTU’s) of air conditioning can
be added to an EAGLE I.

6

Furnace Features - Eagle I - Husky

y

v

~

x

u

w

}

{

z

|

7

Furnace Features - Eagle II - Polar

YUKONTROL SOLID-STATE

u

FURNACE CONTROL This is the solid-state

control that coordinates the gas or oil burner
function with the wood/coal damper so that your
home is always comfortable using your choice of
fuels.

MORE HEAT EXCHANGE SURFACE

v

MEANS LESS HEAT UP THE CHIMNEY

The 8-inch diameter type 304 Stainless Steel
secondary heat exchanger recovers heat that would
normally go out the chimney. This added surface
plus the large firebox and massive primary heat
exchanger provide a total of 82 square feet of
heating surface compared to 30-35 square feet on a
comparable size oil or gas furnace.

GAS BURNER OPTION FOR AUXILIARY

w

FUEL Our gas model comes with a Wayne Model

P250 AF DIN hi-efficiency gas burner. This burner
features a Honeywell electronic ignition and gas
valve. It is certified by Underwriters Laboratories to
provide up to 80.1% steady state efficiency. It can
be switched from LP Gas to Natural Gas or visa­versa. This burner can be interchanged with our
Wayne model MSR oil burner at your option.

2 DIFFERENT STYLES OF HEAVY CAST

x

IRON GRATES It is imperative that 80 percent

of the air for combustion enters the firebox from
below a wood/coal grate to insure an efficient and
clean burning fire. Our standard heavy cast iron
grate is adequate for a wood fire. A much heavier
cast iron shaker grate is also available as an option
for dense coal use.

AFTER-BURNERTM JET SYSTEM GIVES

{

MAXIMUM SOLID FUEL BURNING
EFFICIENCY It extracts maximum BTUs from

the wood or coal. Superheated air is introduced
above the fire to ignite and extract heat from the
unburned combustible gases. Without this feature,
up to 40% of the available solid-fuel energy would

be wasted.

OIL BURNER OPTION FOR AUXILIARY

|

FUEL If oil is your preference for a back-up fuel,

your burner will be a Wayne model MSR 321-009
hi-efficiency oil burner. Features are a Stainless
Steel flame retention head and Honeywell Premium
controls. It is certified by Underwriters Laboratories
to provide up to 80.1 % steady state efficiency. If at
some time in the future, you decide you would
rather have LP or Natural Gas as your backup fuel,
this burner can be interchanged with our Wayne
P250 AF DIN gas burner. (A nice insurance policy.)

AIR CIRCULATING BLOWER AND

}

MOTOR The EAGLE II is designed with 10 inch

wide, ten inch- diameter belt drive blower. This
oversized blower turns slower than ordinary
furnaces because of its large size. It is therefore
quieter than most furnaces, Each EAGLE II is
equipped with a premium Class A motor with Class
B insulation, which means it will operate in a higher
temperature atmosphere. This motor also features
a 1.35 service factor, which means it has 35% more
power than a standard motor of the same size. Up
to 5 tons (60,000 BTU’s) of air conditioning can be

A SEPARATE OIL OR GAS FIRE

y

CHAMBER ENGINEERED FOR THOSE
FUELS This is an important feature. The chamber

is lined with PYROLITETM, an extremely high
temperature resistant ceramic material. It assures
efficient combustion of oil or gas, and directs those
flames into the wood burning chamber for automatic
ignition of the wood fire.

FIRE BRICK LINING EXTENDS

z

FURNACE LIFE Every Eagle furnace features

two inch thick fire brick, 18" high. Fire brick is used,
not only because of its lasting quality, but because it

8

Furnace Features - Eagle II - Polar

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w

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z

x

9

Specifications

MODEL LWO-112 (Oil)

Input rating ......................................................................................................................................140,000 BTU/HR

Nozzle ..............................................................................................................................................1.0 G.P.H. - 80 H

Burner ........................................................................................................................................Wayne Model - MSR

MODEL LWG-112 (Gas)

Input rating.........................................................................................................................................140,000 BTU/HR

Output rating .....................................................................................................................................112,000 BTU/HR

NAT LP

Orifice.......................................................................................7/32" (.218 dia.) 9 (.136 dia.)

Manifold Pressure.....................................................................3.5 W.C.P 11.0 W.C.P.

Burner.............................................................................................................................Wayne Model P250-AF-DI-Y

MODEL LWO-112 or LWG-112

Blower Size (Belt Drive) ................................................................................................................................10" x 10"

Blower C.F.M ............................................................................................................................................. 800 - 1800

Motor Size ........................................................................................................................................1/3 - 1/2 - 3/4 HP

Firebrick Lined..........................................................................................................(7) 9” x 6” x 2” • (8) 12” x 6” x 2”

Cast Iron Grates - Standard.......................................................................................................................(3) 16” x 8”

Wood Fire Door .............................................................................................................................................11" x 10"

Air Filter................................................................................................................................................. 20" x 25" x 1"

Wood Combustion Chamber Size................................................................................................................ 24" x 16"

MODEL LWO-168 (Oil)

Input rating.........................................................................................................................................189,000 BTU/HR

Output rating.....................................................................................................................................151,000 BTU/HR

Nozzle ..............................................................................................................................................1.35 G.P.H - 80 H

Burner........................................................................................................................................ Wayne Model - MSR

MODEL LWO-168 (Gas)

Input rating.........................................................................................................................................189,000 BTU/HR

Output rating.....................................................................................................................................151,000 BTU/HR

NAT LP

Orifice ......................................................................................“F" (.257 dia.) “23” (.154 dia.)

Manifold Pressure.....................................................................3.5 W.C.P 11.0 W.C.P.

Burner.............................................................................................................................Wayne Model P250-AF-DI-Y

MODELS LWO-168, or LWG-168

Blower Size (Belt Drive).................................................................................................................................11" x 10"

Blower C.F.M ............................................................................................................................................1200 - 2000

Motor Size ........................................................................................................................................1/3 - 1/2 - 3/4 HP

Firebrick ................................................................................(10) 9” x 6” x 2” • (7) 12” x 6” x 2” • (1) 9” x 4-1/2” x 2”

Cast Iron Grates - Standard.......................................................................................................................(3) 18” x 8”

Wood Fire Door................................................................................................................................ 13-1/4" x 13-1/4"

Air Filter ..................................................................................................................................................20" x 25" x 1"

Wood Combustion Chamber Size .................................................................................................................24" x 18"

NOTE: It is recommended that a 2", non combustible, raised pad be used for the furnace.

This will prevent moisture from getting under the furnace and causing corrosion.

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10

Plan Your Installation

PLAN YOUR INSTALLATION

It is recommended to read through the entire manual
before beginning your installation. Follow all steps exactly.
Reading this manual will also help you get all the benefits
from your furnace.

CAUTION: Read these rules and the
instructions carefully. Failure to follow these
rules and instructions could cause a
malfunction of the furnace. This could
result in death, serious bodily injury and/or
property damage.

IMPORTANT!

CHECKING THE FURNACE INSTALLATION AND
MAKING ADJUSTMENTS

It is imperative that a heating professional, before startup
and at the beginning of each heating season, inspects the
entire installation and make any necessary adjustments.

RULES FOR SAFE INSTALLATION AND OPERATION

1. Check your local codes. The installation must comply

with them.

Unit Dimensions

FIG. 2

2. Use only the type of fuel approved for this furnace.

Over firing will result in failure of heat exchanger and
cause dangerous operation.

3. Oil storage tanks, piping and valves should be installed

and tested in accordance with NFPA 31.

4. You must have a sufficient supply of combustion air to

the area in which the furnace is located. (See page 28).

5. Factory Built Chimneys: Connect this furnace to a

chimney that complies with NFPA 211 3-1.2. Factory
built chimneys for use with wood-burning appliances
shall comply with the HT requirements of UL 103 or
CAN/ULC-S629-M87. This means you must install what
is referred to as type HT all fuel chimney.

Masonry Chimneys: Connect this furnace to a
chimney that complies with NFPA 211 3-1.2. A field
constructed chimney of solid masonry units, bricks,
stones, listed masonry chimney units, or reinforced
Portland cement concrete that is lined with suitable
chimney flue liners and built in accordance with the
provisions of Chapter 4 of this standard.

6. Follow a regular service and maintenance schedule for

efficient and safe operation.

7. Before servicing, allow furnace to cool. Always shut off

electricity and fuel to furnace when working on it. This
will prevent electrical shocks or burns.

FIG. 3

LOCATING THE FURNACE

The furnace should be located no more than 10 feet
away from chimney. You will need 1” rise per linear
foot of pipe as a minimum.

The furnace should be located with respect to building
construction and the placement of other equipment.
Consideration should be given to sufficient clearance.
Sufficient clearance provides adequate access for the
cleaning of surfaces; the replacement of air filters,
blowers, motors, controls and the chimney connector;
and for the lubrication and servicing of moving parts.
See Fig. 4-5.

UL Listed installation clearances from combustible
surfaces are 48" in the front of this furnace.
18" from the sides, rear and smoke pipe.
See Fig. 5.

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11

Plan Your Installation

CLEARANCES TO COMBUSTIBLES

ABOVE TOP OF

WARM AIR PLENUM

FROM THE

FRONT

6” 48” 18” * 18” 6” 1”

CAUTION

! !

BE SURE TO INSTALL DUCT WORK

WITH CLEARANCES SHOWN

FROM SIDES

AND BACK

Floor Joist or Combustible Material

FROM CHIMNEY

CONNECTOR

6 Inches

WARM AIR

PLENUM

FURNACE

6 Feet

6 FT OF

PLENUM

Heat Supply

1” CLEARANCE TO
COMBUSTIBLES
BEYOND 6’ TO A
POINT WHERE
THERE IS A
CHANGE IN
DIRECTION OF
90 DEGREES OR
MORE.

6 FT OF

PLENUM

1”

Ducts

18” MIN

8” Dia.

Flue Pipe

Combustible

Walls

Top View

Cold Air
Plenum

18” MIN

Top View

Warm Air

Plenum

FLOOR TO BE NON-COMBUSTIBLE MATERIAL

NOTE:
DUCT AND PLENUMS SHALL BE
CONSTRUCTED ENTIRELY OF
SHEET METAL.

* Up to 50% less clearance between combus­tible walls and chimney connector to furnace
and ducts is allowed if insulated according to
NFPA Standard 90B or your local building
code. This copyrighted book is available from
the National Fire Protection Association, Inc.,
PO Box 9101, Quincy, MA 02269-9101

SERVICE CLEARANCE OF 24 INCHES
MINIMUM REQUIRED TO SERVICE
BLOWER

FIG. 4

12

Plan Your Installation

TYPICAL INSTALLATION

DUCTS AND PLENUMS SHALL BE
CONSTRUCTED ENTIRELY OF
SHEET METAL.

AIR CONDITIONING COIL MUST
BE INSTALLED WITH A METAL
CONDENSATE PAN.

DO NOT USE PLASTIC PAN

DUCTS SHOULD BE LARGE ENOUGH
TO HANDLE GRAVITY AIR FLOW IN THE
EVENT OF ELECTRIC POWER OR FURNACE
FAN FAILURE.

FIG. 5

13

Installation

PLACE FURNACE

Review all instructions in the Planning Your
Installation section. Place the furnace in the pre­selected location.
Refer to Figs. 4 & 5 (on page 12) in the Planning
Your Installation section. Make sure the furnace is
level.

SECONDARY AIR INTAKE COVER

1. Remove secondary air intake cover from
accessory package and align over mounting
holes located above fire door assembly on face
of furnace. See Fig. 7.

2. Insert 12 ea. # 10 x 3/4 hex HD drill screws
(furnished with cover) through mounting holes
and tighten.

SECONDARY AIR SHUT OFF
MODELS LWO-112 & LWG-112 ONLY

1. Remove round secondary air shut off disc from
plastic bag.

2. Screw disc to the intake cover just installed.

SMOKE

PIPE

RETURN AIR

PLENUM

WARM AIR

PLENUM

FUME SWITCH

(GAS MODEL ONLY)

DS-103 DAMPER

CONTROL

24-VOLT

TRANSFORMER

FIG. 6

Opening the disc when burning wood provides
room air to the round perforated tubes between
the top and bottom row of firebrick, thereby
causing secondary combustion of the unburned
wood gases as they leave the initial flame. This
patented feature increases wood burning
efficiency up to 40% while reducing smoke and
creosote. When burning gas or oil for extended
periods of time, this disc should be closed.

It is not necessary to provide this disc on models
LWG- 168 and LWO-168. Maximum efficiency is
achieved without this disc.

DRAFT TUBE INSTALLATION

Remove the 8 bolts already screwed in where
draft tube gasket is in place. Mount tube over
gasket. Make sure the gasket aligns with the long
slotted hole. Bolt tube to the furnace below the fire
door. See Fig. 7 & 8.

Secondary Air
Shut Off Disc

FIG. 7

DRAFT TUBE

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14

FIG. 8

Installation

OIL BURNER INSTALLATION

• Model LWO-112 burner has a (140,000 BTU input)

1.00 G.P.H. 80 degree H nozzle installed at the factory.

• Model LWO-168 burner has a (189,000 BTU input)

1.35 G.P.H. 80 degree H nozzle installed at the factory.

Install burner as follows:

1. Make sure hole in side of pyrolite chamber lines up
with hole in the end of the blast tube. (See Fig. 9)

2. Install drip shield (shipped in blower compartment)
over studs. Place gasket (packed in burner box) over
drip shield. (Fig. 10)

3. Remove nuts from burner mounting studs on face of
furnace.

4. Place gasket (packed on burner box) over studs and
install drip-shield. (Shipped in blower compartment.)

5. Insert burner tube into furnace. The burner mounting
flange should be tight against the drip-shield and
furnace front.

6. Install mounting nuts and tighten.

CUT AWAY VIEW

BURNER COMBUSTION CHAMBER

FIG. 9

Pyrolite Liner

In combustion

Chamber

Burner

Blast Tube

GAS BURNER INSTALLATION

• Model LWG-112 A 7/32" dia. orifice has been installed

at the factory. (140,000 BTU input - nat. gas). To
convert to LP gas, see manufacturers instructions
packed with the burner.

• Model LWG-168 A "F" (.257 dia.) orifice has been

installed at the factory (189,000 BTU input - nat. gas).
To convert to LP gas, see manufacturers instructions
packed with burner.

Install burner as follows:

1. Make sure hole in side of pyrolite chamber lines up
with hole in the end of the blast tube. (See Fig. 9)

2. Remove nuts from burner mounting studs on face of
the furnace.

3. Install drip shield (shipped in blower compartment)
over studs. Place gasket (packed in burner box) over
drip shield. (Fig. 10)

4. Assemble mounting flange over burner blast tube (flat
surface away from burner housing). Do not tighten
clamping screws.

5. Insert burner tube into furnace. Align holes in
mounting flange over studs on furnace. Replace nuts
removed in step 2 above and tighten.

Drip
Shield

FIG. 10

6. Insert burner so that burner housing is tight against
mounting flange (end of blast tube should be flush
with inside of pyrolite chamber). Level burner and
tighten clamping screws.

15

Installation

DRAW COLLAR (Models LWO-168 & LWG-168 ONLY)

Firmly attach the draw collar around the stainless steel
smoke pipe. Keep the field installed smoke pipe at least 2 "
away from draw collar. This will insure that smoke leaving
the furnace will not be drawn into the circulating air stream.
See Fig. 11.

NOTE: Only Models LWO-168 and LWG-168 are

equipped with a draw collar.

NOTE: If barometric damper control is installed

horizontally as illustrated, it must be at least 8
inches from furnace smoke outlet.

CHIMNEY

DAMPER CONTROL

NOTE: Refer to the wiring diagrams in the back of

manual in “Exploded Views and Parts List.”

SMOKE

PIPE

DRAW

COLLAR

DRAFT

REGULATOR

FILTER

DOOR

FIG. 11

Remove control from accessory box and install as
follows:

1. Remove the four screws that hold the gasket to the
DS-103 panel.

2. Mount the DS-103 to the draft tube using screws
removed above. Make sure gasket stays in place.
See Fig. 12

3. Loosen the two screws located at slotted end of
draft tube, and remove remaining 10 screws. Make
sure gasket stays in place.

4. Mount DS-103 control and draft tube assembly to
furnace as shown. See Fig. 12

5. The electrical connections will be completed later in
the Installation Instructions.

Draft Tube
Assembly

FIG. 12

Damper Control

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16

Installation

SMOKE BAFFLES

The smoke baffles are factory installed. They
must be checked to see that they have not
become dislodged during shipping. See Fig. 14-A.
Complete the following steps to check the baffles:

1. Hold the baffle in proper position. Tilt the rear up to
clear baffle mounting brackets.

2. Push baffle up to top of combustion chamber above
all three brackets, level off, slide left and lower onto
mounting brackets.

3. Check to see that all three brackets are engaged.

4. Repeat with second baffle, making sure baffles
interlock as shown. See Fig 14-B. When properly
installed, baffles will not move more than 1/4" in any
direction.

NOTE: Failure to have baffles properly installed

will severely reduce combustion efficiency.

FIG. 14-A

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17

FIG. 14-B

Installation

INSTALLING THE HONEYWELL FAN/LIMIT
CONTROL

Included in the accessory carton is a white sheet metal
bracket that is 8-1/4 inches high and 3-1/4 inches wide.
It has a 7/8” hole in it 6 inches from the bottom. Right
below the 7/8” hole are 2 screw holes. This bracket also
has 2 screw mounting holes on the bottom 1-1/4 inch
flange. (Shown in Fig. 15)

1. Place the sheet metal plenum on top of the 24” X 24”

warm air duct opening.

2. Attach the fan/limit control mounting bracket to the top

of the furnace using sheet metal screws to attach the
bracket into the screw holes (pre drilled) that are on the
furnace.

3. With the fan/limit control bracket up against the sheet

metal plenum, either drill a 7/8” hole and two 1/8” holes
through the holes into the sheet metal plenum or use the
bracket as a template.

FIG. 15

4. Screw the mounting bracket onto the bracket with the

2 screws that are furnished.

5. Install the fan/limit control through the mounting

bracket and into the plenum.

6. Tighten the mounting bracket set screw into the

fan/limit control.

NOTE:

If you intend to install air conditioning, the air
conditioning coil should be mounted above fan limit
control. Use metal water drain pan only.
Do not use a plastic pan as high temperatures resulting
from electric power failure or furnace fan failure could
result in fire.

Fan

Limit

Control

FIG. 16

18

Installation

MOUNTING THE THERMOSTATS

The thermostats must be mounted on an interior
centrally located wall. Place them away from direct
sunlight, drafts, and approximately 5 feet above the
floor. It is not required that they be level. Place them
right next to each other. See Fig. 17.

Two Honeywell digital thermostats are furnished with
all multi-fuel furnaces. The larger thermostat controls
your gas, oil or electric, whichever back-up fuel you
have. It offers one temperature setting for
when you want the burner to start. This is in the
event your wood supply is inadequate in keeping
your home at its temperature setting. It also has a
night setback feature that allows you to keep lower
temperatures at desired times. This thermostat also
controls the air conditioning, if applicable.

The smaller thermostat controls the wood/coal room
temperature. It does not have a night setback
feature.

If you have no plans for air conditioning you will
need a 3-wire thermostat cable from your furnace to
your thermostat. If you intend to install air
conditioning a 5-wire thermostat cable is required.

FIG. 17

TYPICAL THERMOSTAT SETTINGS

Place 3 or 4 8” diameter logs into wood chamber.
Set wood thermostat 5 degrees above room
temperature. Set oil/gas thermostat 10 degrees
above room temperature. Burner will then ignite and
start the wood burning. When wood is adequately
burning, reset gas/oil thermostat to 5 degrees below
desired room temperature. Set wood thermostat to
desired wood temperature. With the proper amount
of wood in the firebox, the wood thermostat will keep
the room temperature at the wood thermostat
setting. When the wood is no longer able to keep up
with the heating demands of your home and the
temperature falls to the oil/gas thermostat setting,
the burner will come on until that thermostat is
satisfied.

Honeywell

Programmable

Thermostat

Honeywell

Digital

Thermostat

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19

Installation

FUEL TANKS AND FUEL LINES

Fuel tanks and fuel lines must be installed in
accordance with requirements of NFPA 31.

If fuel lines are under 30 feet in length, it is satisfactory
to use 3/8" O.D. copper tube. Never use tube smaller
than 3/8" O.D. If the lines are over 30 feet in length, we
recommend 1/2" O.D. tube. Use good flare
connections on the fuel lines and, whenever possible,
avoid splicing the tube. Never make a splice or joint
underground. Whenever possible, avoid overhead
lines; avoid kinks and traps in the lines. Do not fasten
fuel lines directly
to floor joists, sills, or girders. Whenever possible,
support fuel lines with sound-absorbing devices.

SINGLE LINE SYSTEM

When fuel does not have to be lifted from tank to
burner use a single line hookup. A single line system
can be used when outlet on fuel tank is higher than
inlet on burner.

FIG. 18

TWO LINE SYSTEM

To lift fuel from tank to burner use a two-line system.
On outside buried tanks, install a supply line from tank
to burner and return line from burner back to tank. The
supply line is called the suction line. The suction line
should extend down within a few inches of the bottom
of fuel tank.

OIL FILTER

A fuel filter should be used with either an outside or
inside fuel tank. In all cases install the filter in
accordance with local codes. The filter should always
be installed inside, near the furnace. An inside tank and
any internal or external fire or flame appliance being
served by the tank must be at least 5 feet away from
the furnace. New oil replacement cartridges should be
installed annually or as required. Always use the new
gasket that is supplied with the replacement cartridge.
Tighten the top of the filter carefully and check the
gasket for proper fit.

FILL AND VENT PIPES

Fuel tanks must be equipped with a fill pipe and a vent
pipe. Fill pipes should be terminated in a convenient place
for filling. They should be equipped with a watertight cap.
It is recommended that 1-1/4" pipe be used for the vent.
The vent should extend outdoors served by the tank and

FUEL LINE

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20