American Energy Systems MAGNUM 7500 User manual

MAGNUM 7500®
CORN/WOOD PELLET FURNACE
THIS APPLIANCE HAS BEEN TESTED AND APPROVED TO CSA B 366.1-M91-CAN/USA & UL 391-99
WARNING: THIS INSTRUCTION MANUAL MUST BE SAVED FOR FUTURE REFERENCE
PLEASE READ THIS ENTIRE MANUAL BEFORE INSTALLATION AND USE OF THIS CORN/WOOD PELLET
BURNING FURNACE. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PROPERTY
DAMAGE, BODILY INJURY OR EVEN DEATH.
REFER TO ADDITIONAL MARKINGS ON APPLIANCE FOR ADDITIONAL INSTRUCTIONS
IMPORTANT: Always contact your local dealer/installer with questions before contacting the factory.
When you call have your serial number, purchase date, who installed the unit and a list of questions.
This appliance must be installed by a lisenced/trained factory approved installer
AMERICAN ENERGY SYSTEMS, INC. GRANTS NO WARRANTY, IMPLIED OR STATED, FOR THE
INSTALLATION OR MAINTENANCE OF THE STOVE AND ASSUMES NO RESPONSIBILITY FOR ANY
CONSEQUENTIAL DAMAGE(S).
Disclaimer Notice: No guarantee is made regarding the heating capacity of this unit. The actual area that this unit will heat depends on
factors such as conditions of the building, heat loss, type of construction, amount and type of insulation, type of air movement, and the
location of the Furnace.
AMERICAN ENERGY SYSTEMS, INC. -150 Michigan Street SE - HUTCHINSON, MINNESOTA 55350
Web Site: www.hearthdirect.com
Rev. date 02/01/04
9When installing your Magnum 7500 Corn/Wood Pellet Furnace, particular attention needs to be made in
regards to fire protection. If the unit is not properly installed, a house fire may result. For your safety,
follow the installation and operation instructions provided, and if a question arises contact local building or
fire officials about restrictions and installation requirements in your area.
9Read the operations and fuel section of this manual before plugging in your unit.
9Always unplug the unit before attempting any service work.
9Do not connect the unit to a chimney flue already serving another appliance.
9When installing the chimney pipe to the unit, it is important to remember that the unit operates on a
negative pressure and the chimney on a positive pressure. All chimney connections, elbows and fittings
must be airtight. (proper venting practices must be followed. Consult with a venting professional)
9Ashes must be disposed of in a metal container with a tight fitting lid.
9All minimum clearances to combustibles must be followed.
9The Magnum 7500 Corn/Wood Pellet Furnace is tested for operation with 14% or less moisture corn or
with wood pellets with an ash content of no more than 3%. It is recommended that Corn with 11-12%
moisture or wood pellets with an ash content of 1% or less be used for efficient operation of this unit.
Corn over 12% moisture has a lower BTU value and will be hard to burn on the lower settings.
9It is important to use fuel that is clean, dry and consistent. Make sure that your supplier is giving you
the same fuel each time that you purchase. It is recommended that you purchase your entire heating season
supply of fuel at one time so that the fuel will be the same.
9A voltage surge protector or ground fault outlet is required for this unit. The warranty on the
circuit board will be voided if surge protection is not installed before operating this unit
OWNER’S MANUAL
Installation – Operation – Maintenance Instructions

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TABLE OF CONTENTS PAGE
INTRODUCTION &SPECIFICATIONS………….……………………………………….... 3
CLEAN BURN CORN ADDITIVE…………………………………………………………. 4
ESTIMATED FUEL FEED RATE CHART…………………………………………………. 5
UNPACKING YOUR MAGNUM 7500 CORN/PELLET FURNACE /SAFETY STEPS…. 6-8
BURNING SOLID FUELS (SHELLED CORN AND WOOD PELLETS)……………..…... 9-10
CLEARANCE TO COMBUSTIBLES………………………………………………………. 11
FLOOR PROTECTION………………..………..................................................................... 12
GUILDELINES FOR EXHAUST VENTING SYSTEMS DESIGNS……………………… 13-15
DESIGN GUIDELINES FOR OUTSIDE COMBUSTION AIR CONNECTION…………... 16
INSTALLATION CONFIGURATIONS…………………………………………………….. 17-19
DUCTING……………………………………………………………………………………. 20-22
GLASS MAINTENANCE, ADJUSTMENT, REMOVAL AND REPLACEMENT………… 23
STOVE CONTROLS…………………………………………………………………………. 24
COMBUSTION ENHANCEMENT SYSTEM (CES)……………………………………….. 25
LIGHTING INSTRUCTIONS……………………………………………………………….. 26
CIRCUIT BOARD FUNCTIONS……………………………………………………………. 27
SETTING THE DRAFT……………………………………………………………………… 28
MAINTENANCE INSTRUCTIONS………………………………………………………… 28-31
AUTOMATIC SAFETY FEATURES……………………………………………………….. 32
THERMOSTAT INSTALLATION…………………………………………………………... 32-33
MAGNUM 7500 WIRING DIAGRAM………………………………………………………. 34
TROUBLE SHOOTING GUIDE…………………………………………………………….. 35-38
SETTING THE CIRCUIT BOARD………………………………………………………….. 39
WARRANTY INFORMATION………………………………………………………………
DRAFT SLIDE GATE ADJUSTMENT……………………………………………………...
40
41
SERVICE RECORD………………………………………………………………………….. 42
WARRANTY REGISTRATION CARD……(IN HARDWARE PACKET)

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DEAR VALUED MAGNUM 7500 OWNER,
We appreciate your decision to help preserve our precious environment by purchasing the Magnum 7500
Corn/Wood Pellet Furnace. With everyone working together, we can have clean air and renewable heat
for our homes.
Please read this Owners Manual carefully before using this appliance and if you have any questions
contact your local Magnum 7500 reseller. We appreciate your business and wish you many warm days
and nights with your new Magnum 7500 Corn/Wood Pellet Furnace..
Sincerely,
Mike
Mike Haefner, President
American Energy Systems, Inc.
P.S. You are very important to the success of our business and your referral of our products is very much
appreciated. Many of our Resellers have referral rewards available and I encourage you to ask your local
dealer how to get involved in helping make our country energy self-sufficient. GOOD LUCK !
American Energy Systems, Inc., manufacturer of the Magnum 7500 Corn/Wood Pellet Appliances, reserves the
right to alter its products, their specifications and/or price without notice.
Safety tested by Warnock Hersey to UL 391-99, CAN/CSA-B366.1-M91,
Heat Input* 76,500 BTU/HR with Corn
63,000 BTU/HR with Wood Pellets
Fuel Storage Capacity 210 Lbs.
Width 26”
Height with Pedestal 47 ½”
Depth (includes ash lip) 36”
Shipping Weight 450 pounds
Electrical Requirements 115 volts – 60 cycle – 15 amp Circuit
Flue Size (rear exit) 3” or 4” Type L Vent
Warm Air Outlet 12” Round or 12” x 12” rectangular
Room Air Blower 1240 CFM furnace blower
Cold Air Return 14” x 24” or 12” round
Filter Size 16 x 25”
Overall unit efficiency As high as 87%
Total Amp. Draw 9 amp.
SPECIFICATIONS

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*BTU input will vary, depending on the brand of fuel, size of fuel, quality of fuel and moisture content.
Consult your authorized Magnum 7500 reseller for information on the best fuel to use to get the best results.
CLEAN BURN
CORN ADDITIVE TM
AMERICAN ENERGY SYSTEMS INC. HAS DEVELOPED AN ADDITIVE THAT
WHEN MIXED WITH CORN VIRTUALLY ELIMINATES THE (CLINKERING) THAT
IS CAUSED BY THE COMBUSTION PROCESS OF BURNING CORN.
HOW DOES IT WORK AND WHY DO YOU NEED IT?
The clean burn additive is a unique blend of the right ingredients that will
oxygenate the combustion process producing a cleaner more productive fire. This will
generate more BTU’S out of corn, clean up the combustion process and produce less ash.
HOW DO YOU MIX THE CLEAN BURN ADDITIVE?
Depending on how much starch or protein content that you have in your corn
supply you will have to change the percentage of mixture. The normal mixture is a ratio of
one (1) part Clean Burn additive to 150 parts of corn. This translates to approximately 1 &
1/3 pounds of Clean Burn for every hopper of corn. ( app. 5-6 handful’s )
To mix the Clean Burn additive simply add it to the corn and mix in by hand.
If you have corn with low starch content you may be able to decrease the mixture, and corn
with high starch content will require more. The easiest way to tell if the mixture is right is,
after a day of burning, look at the Fuel Stirrer in the Firepot and if there is any buildup of
clinker on the fingers you need to increase the mixture.
If there is excessive white powder in the firepot you can decrease the mixture.
Using the Clean Burn additive will reduce maintenance, ash content, buildup in the firepot,
fly-ash on the outside of the home and will increase the heat output. The additional heat
output will more than pay for the cost of the additive.
CAN I STILL USE OYSTER SHELLS AS AN ADDITIVE?
We have found that the oyster shells, even though they will work, causes auger
jams, pre-mature wear or damage to the auger motor and excessive ash buildup. We do
not recommend that you use oyster shells and if you do use them it will void warranty on
the auger system. Mixing in a small handful per hopper will not hurt the system.

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GIVE CLEAN BURN A TRY. YOU WILL BE PLEASANTLY SURPRISED. CLEAN BURN

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MAGNUM 7500 FURNACE TECHNICAL DATA
ESTIMATED FUEL FEED RATE CHART
CORN: Fuel consumption will vary depending on Kernel size and moisture content
Heat Setting Approximate fuel consumption BTU Range
# 1 fuel setting 2.8 pounds per hour 22,000 to 25,000
# 2 fuel setting 4.5 pounds per hour 35,000 to 40,000
# 3 fuel setting 5.0 pounds per hour 40,000 to 45,000
# 4 fuel setting 7.1 pounds per hour 56,000 to 60,000
High 9.0 pounds per hour 70,000 to 76,500
WOOD PELLETS: Fuel consumption will vary depending on fuel size
# 1 fuel setting 2.2 pounds per hour 18,700 to 19,800
# 2 fuel setting 2.8 pounds per hour 24,000 to 25,000
# 3 fuel setting 3.7 pounds per hour 31,000 to 33,000
# 4 fuel setting 5.2 pounds per hour 44,000 to 47,000
High 7.0 pounds per hour 60,000 to 63,000
These fuel consumption feed rates are an approximation. Each unit will vary with the type and size of
the fuel that is being burnt. The most important feed rates to check would be the # 1 setting and the
High setting to make sure that the low and high feeds are proper for the unit. If the feed rates are
drastically different contact the factory for suggestions. Do not get alarmed if the feed rates are not the
same as shown. As long as the low fire will stay lit and the high fire does not overheat the unit and
shut it down the unit is performing as it should. Simply adjust the air control to maintain the fire.
The unit is designed to adapt to different size fuels and consumption circumstances.
If you are experiencing different feed rates than shown or if the heat desired is not on a particular
setting, you will need to set the fuel feed rate on a lower or higher setting to adjust for the heat
requirements of your home. The test weight of Corn varies from year to year and that alone will
change the heat output of the unit. There is a fine tune adjustment that the Reseller can make to the
circuit board if the low fire will not stay lit or is burning too hot. You will need to contact your local
Reseller for this adjustment.
It is recommended that when the unit is first installed in the customer’s home that the unit be fired and
run for over an hour to see if the air adjustment is right for the fuel. Making the proper air adjustment
and making sure that proper outside air has been provided will allow the unit to perform properly.
The Magnum 7500 is certified to burn shelled corn and wood pellets. The Magnum 7500 will burn
other fuels such as Cherry Pits, Barley, Oats, Wheat and other identified fuels but the feed rates and
safe operation are not warranted. Check with your local Reseller before burning fuels not approved.
NOTE: The factory will not pay warranty service calls on problems that have come up on the
unit when the proper fuel, combustion air requirements and air adjustments have not been
checked, the unit installed by a licensed/trained installer or the unit operated properly.
tdocbeff

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When you receive your Magnum 7500 Corn/Pellet Furnace, be careful to inspect all parts and
components to make sure that nothing was damaged or lost in shipment. If there was shipping damage,
be sure to report it to your Magnum 7500 reseller, and the shipping company that delivered your unit.
Freight damage claims must be made to the Freight Company immediately. If parts are missing
contact your local Magnum 7500 reseller or contact the factory right away. Your satisfaction is our top
priority.
If damage is not reported to the freight company before signing for it, you will not receive re-
imbursement for freight damage.
To uncrate your Magnum Corn/Pellet Furnace:
1) Cut the banding straps and open the carton lid. The carton is stapled to the wood pallet so it will be
necessary to pull the cardboard loose from the pallet. Remove the crating box carefully lifting up over
the top of the unit. Be careful not to scratch the unit with the staples. Remove the wood blocks and
plastic. We strongly urge you to recycle the packaging materials to help protect the environment.
IMPORTANT: Proper installation of this furnace is crucial for proper and safe operation. Installing this
product improperly may result in a house fire and personal injury. All applicable building codes for your
location must be followed. In areas where building codes require additional steps to the installation of
this product not included in this manual, the building codes will take precedent and must be followed.
Contact your local building inspector to obtain any necessary permits or inspection guidelines before
installing the product. (This appliance must be installed and serviced by a trained licensed heating
contractor to assure proper installation and warranty of this product) Warranty Labor, parts,
shipping or any other costs will not be covered if a trained installer does not install the unit.
Consult your local heating contractor for proper heating requirements, placement of your Magnum
7500 Corn/Wood Pellet Furnace and duct sizing.
OUTSIDE AIR HOOKUP TO THE FURNACE IS REQUIRED (3” diameter)
This furnace has to be exhausted with 3” or 4” class L vent. Furnace cannot be vented with another
appliance.
9DISCONNECT THE POWER CORD BEFORE SERVICING THIS FURNACE. A power
surge protector is required. The unit must be plugged in to a grounded 110 -volt power source.
9Always route the power cord away from the unit. Do not route cord in foot traffic areas. Do not
pinch cord under furniture. Do not add any additional length to the power cord.
9This product requires simple periodic maintenance for proper operation and long life of the furnace.
Read and follow the maintenance schedule closely.
9The Magnum 7500 furnace is designed, approved and tested to burn shelled corn, or wood
pellets. The burning of other solid fuels such as cord wood in this furnace is not permitted. If you are
SAFETY STEPS
UNPACKING YOUR MAGNUM 7500 CORN/PELLET FURNACE

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burning fuels not approved for this appliance it will void the warranty and no service/warranty will be
allowed.
The Magnum 7500 will burn high ash content fuels but will require additional maintenance/cleaning.
9A working smoke detector must be installed in the same room as this product.
9Flammable or explosive liquids such as gasoline, naphtha or engine oil must NEVER be used in or
around this stove. These liquids must be stored well away from this furnace as the open flame in the
burner chamber could ignite the fumes of such liquids. Do not burn garbage in this unit.
9According to HUD requirements, when installed in a mobile home, this stove must be grounded
directly to the steel chassis of the mobile home and bolted to the floor.
9The moving parts of this stove are propelled by high torque electric motors. The auger and Fuel
Stirrer can cause severe injury to body parts that may get near them. Keep all body parts away from
the auger and Fuel Stirrer while the furnace is plugged into an electrical outlet. These moving parts
may begin moving at any time while the furnace is plugged in.
9This unit may be installed on a combustible surface. Make sure that the unit is level. This unit must
have floor protection of at least 6 inches (150mm) in front and 6 inches (150 mm) on either side of the
fuel loading and ash-removal doors.
9Do not attempt internal service to the unit when it is burning and or plugged into power.
9It is important to plan your installation so that service work can be performed on the appliance. Leave
ample space around the furnace to open cabinet doors. Minimum clearances to combustibles must be
maintained.
9Your Magnum 7500 reseller is required to go over in detail with the owner/operator as to the correct
operation of the furnace and its components.
9Never block or obstruct any air intake ports including the vents on the furnace panels. Overheating
can occur without proper air movement.
9Make sure your circuit is not overloaded as to cause the furnace to lose power.
9Furnace must be installed with adequate return and supply duct systems. Failure to have adequate
return air to the furnace will void your warranty.
9A minimum rise of 5’ is required on all side vent applications.
9Proper cleaning and maintenance is necessary. You will need to follow the directions for cleaning that
are in this manual. A furnace that is properly maintained and cleaned will give you years of trouble
free performance.
9The warm-air supply-duct system must be constructed out of materials that will withstand a minimum
temperature rating of 250 degrees Fahrenheit. Plenums installed to the furnace must be constructed
out of metal.

9
9The warm-air supply outlet of the supplementary furnace should not be connected to the cold-air
return inlet of the central furnace because a possibility exists of components of the central furnace
overheating and causing the central furnace to operate other than intended.
9DO NOT USE DUCT ELBOWS HAVING AN INSIDE RADIUS OF LESS THAN 6 INCHES
(150MM) ON THE (oil, electric, gas) furnaces.
9DO NOT CONNECT DUCTWORK SO THAT A REVERSE FLOW IS POSSIBLE.
9OPERATE THE (gas, oil, electric) FURNACE PERIODICALLY TO ENSURE THAT IT
WILL OPERATE SATISFACTORILY WHEN NEEDED.
9THIS APPLIANCE IS CERTIFIED FOR INSTALLATION ONLY AS SHOWN IN THIS
INSTALLATION MANUAL. SEE DIAGRAMS ON PAGES 21-24
9DO NOT RELOCATE OR BYPASS ANY OF THE SAFETY CONTROLS IN THE
ORIGINAL (gas, oil, electric) FURNACE INSTALLATION.
9DO NOT CONNECT TO ANY GAS FURNACE THAT HAS NOT BEEN CERTIFIED
INITALLY AS COMPLYING WITH CAN/CGA-2.3
9A GAS FITTER WHO IS RECOGNIZED BY THE REGULATORY AUTHORITY MUST
VERIFY THE OPERATION OF THE GAS FURNACE FOR ACCEPTABLE OPERATION
BEFORE AND AFTER INSTALLATION OF THE ADD-ON APPLIANCE.
9DO NOT CONNECT TO ANY GAS FURNACE THAT IS NOT EQUIPPED WITH AN AIR-
CIRCULATION BLOWER, OR TO A CHIMNEY OR VENT SERVING A GAS FURNACE
OR GAS APPLIANCE.
9THE MAGNUM 7500 CORN/WOOD PELLET FURNACE IS COMPATIBLE WITH THE
FOLLOWING (gas, oil, electric) INPUT SIZES: 50,000 to 200,000 BTU.
9The Magnum 7500 Corn/Wood Pellet furnace should only be installed on a furnace duct system and
venting that is in good operating condition.
9The installation of the Magnum 7500 Corn/Wood Pellet furnace should comply with requirements of
CAN/CSA-B365, and changes to the installation should comply with CSA B139 (for oil-fired), C22.1
(for electric), or CAN/CGA-B149.1 or CAN/CGA-B149.2 (for gas-fired)
Prior to installation you will need to determine the compatibility of the existing furnace to the
Magnum 7500 Corn Furnace. Following are the guidelines for determining compatibility.
CFM compatibility would be rated at app. 1250 CFM. If the cfm in the central furnace is less than this a
back draft damper may need to be installed in the plenum of the central furnace. The static pressure in the
ductwork cannot exceed the name plate rating on the central furnace and must be compatible with the
static pressure rating on the name plate of the Magnum 7500 Corn Furnace.
Adjust the static pressure in the ductwork to maintain a temperature rating of 130-150 deg. F.

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Unlike petroleum and natural gas products, solid fuels such as corn and wood pellets create ash as the fuel
is burned. Even with the highly efficient flame your Magnum 7500 will produce, the solid fuels used
will produce ash. This ash will have to be cleaned out of the furnace from time to time. The cleaning
procedure will be discussed later in this manual. You can minimize the amount of cleaning required and
maximize the efficiency of your furnace by maintaining the correct draft settings.
The draft setting on your furnace may have to be changed from time to time to accommodate your
specific burning conditions. Proper draft setting will be discussed later in this manual. The point we wish
to make here is that your Magnum 7500 furnace, due to the nature of solid fuels, will require brief
periodic attention. Please do not expect to light your furnace and walk away from it until you want to
shut it off in the spring. A few moments of adjustment and cleaning from time to time are an important
part of burning solid fuels.
The Magnum 7500 furnace has been designed to burn shelled corn or wood pellets that meet the
Association of Pellet Fuel Industries standards. Since both of these fuels vary greatly in quality and
consistency, AES cannot be responsible for damage done to your furnace due to fuel problems. The
following are guidelines to using and selecting proper fuels for your furnace.
SHELLED CORN (11-12 percent moisture recommended)
9Store your corn supply in a dry place and keep the bags or container sealed to prevent your corn from
absorbing excess moisture. Test the moisture content periodically to maintain the proper dryness.
9Check your Corn for foreign objects. Your furnace warranty will not cover damage done to
your furnace due to foreign objects in the fuel supply.
9Do not carry your corn supply over into the next heating season if possible unless properly
stored. If you carry over your corn supply make sure to check the corn for proper moisture content.
9DO NOT BURN “TREATED” SEED CORN IN YOUR FURNACE. Seed corn is treated with
chemical pesticides that are harmful or fatal if swallowed; therefore, seed corn is dangerous to have in
the house, especially where children can reach it. Burning treated seed corn in your furnace will
void the warranty and will destroy the exhaust system on the unit.
9Corn must be 14% or less moisture content. Wet corn will cause rapid plugging and deterioration
of the stove and exhaust system, lower the heat output and will void the product warranty.
9Corn must be cleaned and free from debris. Corn right from the field will often have stalks, sticks,
bolts and cob debris, which can plug the auger and/or cause damage to the auger and motor. Damage
caused by dirty corn and other foreign objects is not covered by the product warranty. Ask for clean
corn when you purchase it from your local corn supplier. Clean corn can be purchased in bulk or
bagged from most elevators, feed stores or even your local farmer.
BURNING SOLID FUELS (shelled corn and wood pellets)

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ALWAYS ASK FOR CORN WITH 11-12% MOISTURE CONTENT.
If you are having trouble finding clean Corn, contact your local Magnum 7500 Reseller and ask
them to get you an “Energy Sifter” corn cleaning system. Cleaning your corn with the Energy
Sifter from American Energy Systems will assure clean corn and a more consistent burn rate. It is
also important to vacuum out your hopper once a month to assure trouble free augering of the corn.
9There are many varieties of corn grown around the world. Each variety has unique characteristics
including the shape and size of the kernel. Your furnace will burn more consistently with a small to
mid-size kernel corn.
If the kernel size of the corn varies greatly or if you switch sources frequently, you will get a less
consistent burn, which will require more attention to the draft setting on your furnace. Therefore,
purchasing corn from the same source will help achieve a more consistent burn.
DO NOT USE CORN WITH A HIGH WAX CONTENT!
WOOD PELLETS
9As with corn, be consistent in your pellet supplier. Pellets will vary in content and burn
characteristics from supplier to supplier. A consistent supply of pellets will require fewer adjustments
to the draft of the furnace.
9Mixing Corn with the Wood Pellets can be done and will provide a little less heat in the spring and
fall. Also, if the Corn is a little wet, mixing pellets in will help the fire maintain especially on the
lower settings.
9Check your pellets for foreign objects. Your furnace warranty will not cover damage done to your
furnace due to foreign objects in the fuel supply.
9Store your pellets in a dry place to prevent them from absorbing excess moisture.
9Vacuum the hopper out after every 6-7 bags to eliminate buildup of sawdust. More often if the pellets
are poor quality. If sawdust is a problem you will have to screen each bag of fuel for a consistent
feed.
9Wood pellets vary from supplier to supplier in ash content from less than 1% to 3% or more. Low ash
content pellets will allow you to burn the furnace longer between cleanings. Only wood pellets
manufactured to the Association of Pellet Fuel Industries (A.P.F.I.) standard for residential pellets
fuels are recommended. Look for A.P.F.I. registration number on the back of pellets. Consult your
local Magnum 7500 reseller for more information on approved wood pellet fuel.
9It is recommended not to store fuel over the summer months. Plan your fuel supply so that you use up
the fuel by the end of the heating season. Pellets left over the summer can draw moisture and cause
excessive ash in the system or plug the auger.

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CLEARANCE TO COMBUSTIBLES
Back 1” Supply Plenum 2”
Side 1” Class L Vent 3”
Corner 1”
Front 48”
CLEARANCE TO COMBUSTIBLES
Combustible Ceiling
3”
Minimum clearance
above the ductwork
on the Corn Furnace
to the floor joists is
2”
14” x 24” cold air
return
Floor protection must be provided because of possible spillage of ashes and burning fuel. There must be non-
combustible materials placed 6” in front of and 6” to the side of the fuel loading and ash removal doors. If the unit is
setting on a cement floor no protection is needed. Consult your local dealer for possible sources for non-combustible
materials acceptable to be used.

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The Magnum 7500 Corn/Wood Pellet Furnace may be installed on a combustible floor, with proper
floor protection, or on a masonry hearth. The hearth or non-combustible floor protector must extend a
minimum of (6) six inches in front of and (6) six inches from each side of the ash removal door.
It is recommended that the unit be placed on a non-combustible surface and the adjustable legs adjusted
so that the base of the unit is not touching the floor. This will enable the floor surface to keep dry so that
the furnace base does not rust.
It is a good idea, but not required, that you place the unit up on a (4) inch high raised surface to keep it out
of water, etc that may collect on the floor.
The furnace must be installed with the following minimum clearances to side and back wall combustible
materials. NOTE: These are minimum clearances to combustible walls established by the testing lab.
The amount of room needed on the left side of the unit to access the electrical panel is (6) six inches.
When venting straight out the back of the unit, the B clearance is 1”. C clearance is for a vertical vent
install.
It is highly recommended that you have 2 feet clearance around the unit for servicing and maintenance.
Both the left and right sides of the unit have panels that are hinged and will need to be opened periodically
to clean, inspect or replace motors and parts.
If there is not room to have this much clearance you must leave 2-3 feet of clearance on the back of the
unit. If the back panel is taken off, the motors can be accessed and removed.
IMPORTANT: Make sure that there is ample room to remove the unit if extensive service work needs to
be done. Also there must be adequate room on the side of the furnace to load the fuel into the hopper.
If the room that the furnace is going to be in is small and also closed off, you will need to plan adequate
ventilation to get the radiant heat out of the room. Having a 8 x 12 register in the lower and upper area of
the wall or door will be adequate ventilation.
F
LOOR PROTECTIO
N
CLEARANCES TO COMBUSTIBLES
A
B
C D
E
E
A=1” B=7” or 1”
if straight out the
wall install
C=3” if tee is
installed D=3”
E=1”
Residential/ Mobile Home
Vertical Installation
Residential/Mobile Home
Horizontal + Vertical
Corner Installation

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It is required that only authorized licensed installers install your Magnum 7500 furnace. The following installation
guidelines must be followed to ensure conformity with both the safety listing of this furnace and to local building codes.
9A listed 3” or 4” type “PL” pellet vent exhaust system must be used for installation and attached to the pipe connector
provided on the back of the stove. Use a 3” to 4” adapter for the initial pipe. A cap must be used at the termination of type
“L” vent chimneys.
9Do not terminate vent in any enclosed or semi-enclosed area, such as; carports, garage, attic, crawl space, under a sundeck
or porch, narrow walkway or closed in area, or any location that can build up a concentration of fumes such as a stairwell,
covered breezeway etc.
9Vent surfaces can get hot enough to cause burns if touched by children. Non-combustible shielding or guards may be
required. Do not install a flue damper in the exhaust vent of this unit.
9Termination must exhaust above air inlet elevation. It is highly recommended that at least 5 ft. of vertical pipe be
installed when the appliance is vented directly through a wall or in a basement. This will create some natural draft to
prevent the possibility of smoke or odor during appliance shutdown and to keep exhaust from causing a nuisance or hazard
from exposing people or shrubs to high temperatures. In any case, the safest and preferred venting method is to extend the
vent through the roof. Do not connect this unit to a chimney flue serving another appliance.
9Distance from doors and windows, gravity or ventilation air inlet into building:
Not less that 4 ft. / 1.2 m below, 4 ft. / 1.2 m horizontally from, 1 ft. / 305 mm above (This does not apply if the
Windows are non-opening or have been fixed so they cannot open.)
9Distance from bottom of termination and grade – 1 ft. / 305 mm minimum. This is conditional upon the plants and nature
of grade surface. The exhaust gases are not hot enough to ignite grass, plants or shrubs located in the vicinity of the
termination. The grade surface must not be a lawn. Distance from bottom of termination and public walkway is 7ft. /2.1m
minimum.
9Distance to combustible materials – 2 ft. / 610 mm. This includes adjacent building, fences, protruding parts of the
structure, roof overhang, plants and shrubs, etc.
9It is recommended that a single or double clean-out “tee”, for cleaning the vent in both directions, be installed at every 900
junction to enable collection of fly ash and to permit periodic cleaning of the exhaust system. 900 elbows accumulate fly
ash and soot thereby reducing exhaust flow and performance of the furnace.
9Total length of horizontal vent must not exceed 48” (4 ft.) / 1,200 mm. All joints in the vent system must be fastened by at
least 3 screws, and all joints must be sealed with RTV silicone sealer to be airtight.
9When venting into an existing masonry or factory built chimney, the chimney must be cleaned, with all creosote removed.
The chimney must be a type suited for solid fuel. WARNING: The chimney and the chimney connections must be kept
clean and in good condition.
9The “PL” vent or single wall stainless exhaust system must be installed so as to be GAS TIGHT! The vent manufacturer’s
installation procedures must be followed. In addition, pipe connections, joints and all pipe seams within the home should
be sealed with high temperature RTV silicone sealer.
9If the furnace is to be installed into an unlined masonry chimney, it is necessary that a 4” stainless steel pipe be extended to
the top of the existing chimney. The top of the existing chimney should be sealed with a steel plate (see diagram on page
17).
GUIDELINES FOR EXHAUST VENTING SYSTEMS DESIGN

15
GUIDELINES FOR EXHAUST VENTING SYSTEMS DESIGN, CONT……
1) Determine the “equivalent pipe length” for each component used according to the comparison chart
below. Add the “equivalent pipe length” of all components to get the “total equivalent pipe length”.
2) Determine the altitude at which you are installing the stove.
3) Cross-reference the “total equivalent pipe length” and the altitude using the graph below.
NOTE: The “total equivalent pipe length” should not exceed 30 feet.
Component Equivalent Length Equivalent Pipe Length
Horizontal Straight Pipe Actual Length in ft. x 1.0 Horizontal Pipe = 1 x (2+1) = 3 ft.
Vertical Straight Pipe Actual Length in ft. x 0.5 Vertical Pipe = 0.5 x 8 = 4 ft.
900Elbow or Tee 5.0 feet 90 Degree Tee = 2 x 5 = 10 ft.
450Elbow 3.0 feet 45 Degree Tee = 1 x 3 = 3 ft.
TOTAL = 20 ft.
NOTE: These are guidelines only. Proper venting is accomplished by design and common sense. In most
installations 3 inch diameter venting is adequate. If it does not vent properly you will have to change it to 4”.
0 2 4 6 8 10 12
ALTITUDE X 1,000 FEET
25
20
15
10
5
0
4” DIAMETER ONLY
3” OR 4” DIAMETER
CRITERIA FOR SELECTING PIPE DIAMETER
MAXIMUM
0 2 4 6 8 10 12

16
GUIDELINES FOR EXHAUST VENTING SYSTEMS DESIGN, CONT……
CHIMNEY AND VENTING
Chimney required for the Magnum 7500 Corn Furnace is 3 or 4" Class "L" (also known as PL vent). A starting
collar must be used to attach the venting system to the furnace. When connecting into a Class "A" or masonry
chimney an approved 3 or 4" liner MUST be used to prevent back drafting of the chimney.
EXISTING CLASS "A" CHIMNEY:
Run 3” or 4” Class "L" venting from the furnace connection to a positive
connection with the class "A" chimney. AN APPROVED 3” or 4" LINER MUST
BE USED IN CLASS "A" CHIMNEYS. Make sure each joint is firmly
locked in place. Make sure the attachment of Class "L" to the Class "A"
chimney is secure with sheet metal screws. Seal all joints with high- temperature silicone..
Class "L" venting should maintain a pitch on rise from the furnace to the chimney
of at least 1/4" per foot. .
A): "L" Vent venting 3”or 4" B): "L" Vent elbow 90°, adj. 3” or 4" or Tee
EXISTING MASONRY CHIMNEY: Run 3”or 4" Class "L" venting from the
furnace connection to a positive connection with the masonry
chimney. Make sure each joint is firmly locked in place. Make sure
the penetration of the Class "L" venting into the masonry chimney
is sound and secured with high- temperature cement. Seal all joints with high-
temperature silicone. Class "L" venting should maintain a pitch on rise
from the furnace to the chimney of at least 1/4" per foot.
AN APPROVED 3”or 4" LINER MUST BE USED IN MASONRY CHIMNEYS.
Your new furnace is so efficient; an unlined chimney could remain cold and cause
a downward pressure creating poor burning, incomplete combustion or back draft.
A.)"L" Vent venting 3”or 4" B.)"L" Vent elbow, 90° adj. 3”or 4" or Tee
NEW VERTICAL INSTALLATIONS: Install 3”or 4" Class "L" venting and
accessories according to manufacturers instructions and local codes
(3" clearance to combustibles). Run Class "L" venting all the way from the
furnace connection to point of termination. Make sure each joint is
firmly locked in place. Seal all joints with high temperature silicone.
Class "L" venting should maintain a pitch on rise from the furnace to
the chimney of at least 1/4" per foot.
A.) Vertical top 3” or 4" D.) Adj. flashing 3”or 4"
B.) "L" Vent pipe 3”or 4" E.) Fire stop spacer 3”or 4"
C.) Storm Collar 3”or 4" F.) "L" Vent 90° adj.3”or 4" clean out tee
HORIZONTAL/VERTICAL VENTING: If venting the Magnum 7500
Horizontally through an exterior wall, a vertical section needs to be installed to
provide natural draft in the event of power failure.
Use only 3”or 4" Class "L" venting all the way from the furnace connection to
point of termination. Make sure each joint is firmly locked in place.
Seal all joints with high temp silicone. Max. horizontal run length - 4ft.;
Min. vertical length - 5 ft.
A.) "L" Vent pipe 3”or 4" B.) Wall thimble 3”or 4" C.) "L" vent 3” or 4" cleanout "T"
D.) "L" Vent pipe 5ft E.) Wall Bracket F.) "L" vent 90° elbow ."
G.) "L" vent Termination collar 3” or 4”
If installing the venting on the exterior of the home or shop, the venting must
be enclosed in an insulated chase to prevent condensation and creosoting.
DIRECT VENT HORIZONTAL TERMINATION IS NOT RECOMMENDED

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OUTSIDE MAKE-UP AIR FOR COMBUSTION IS REQUIRED ON ALL INSTALLATIONS
1) For all Furnace installations, it is REQUIRED that the furnace combustion air intake be connected to
a fresh air intake outside. If the home is newer or has been tightly insulated it is imperative to the
operation of the unit to install outside combustion air.
`
2) Connection to outside the house is REQUIRED for mobile home installations.
3) Fresh-Air pipe 3 inches in diameter is approved to use for outside air connections (straight or
flexible). PVC pipe is allowed.
4) If the air inlet is connected to the outside, it MUST be terminated with a vertical 90-degree bend
(down) or with a wind hood. Failure to do so could result in a burn back during high winds blowing
directly up the air inlet during a simultaneous power failure (see diagram above).
5) It is important not to terminate the inlet of the fresh air intake too close to the venting outlet for the
smoke. It is recommended that the inlet for the fresh air is a minimum of 3 feet away from the venting
outlet and at least 1-2 feet below.
6) Blockage, excessive length, or bends in the air intake pipe will starve the furnace of combustion air.
A 90-degree bend is equivalent in restriction to approximately 30 inches of straight inlet pipe.
7) Furnace must have fresh air (oxygen) to perform properly. Incomplete combustion is caused by
negative pressure in the home when the furnace is starved for fresh air. This causes carbon monoxide
(CO) and can be dangerous. Provisions for outside air must be made and kept clean and free from
blockage outside the home.
DESIGN GUIDELINES FOR OUTSIDE COMBUSTION AIR CONNECTION

18
The Magnum 7500 Corn/Wood Pellet Furnace may be installed as follows:
1) A Stand-Alone System (Shop Furnace with ductwork coming off the top of the unit)
2) A Supplementary heating system (Add-On Furnace)
3) A Central heating system (Primary Heating) Note: Recommend additional primary heat source.
The Magnum 7500 Corn/Wood Pellet furnace is not intended to be used as a primary heat source.
Horizontal Exhaust Direct Vent Termination instructions:
1) Locate proper position for the type “PL” wall thimble. Use a saber saw or key- hole saw to cut a
7 ¼-inch (for 3” vent) or a 8 1/4-inch diameter hole through the wall (G) for a 4-inch pipe. Install the
wall thimble in the hole. The size of the hole will be determined by your wall thimble.
2) Position unit in place leaving plenty of room for servicing the unit. Push the type “PL” pipe through
the wall thimble. Squeeze a bead of high temperature RTV silicone sealer around the outside of the
3”or 4” diameter exhaust pipe approximately ½” from the stove back panel (unless using the Pipe
Adaptor). Firmly push on a section of type “PL” pipe until the inner pipe liner pushes up against the
bead of RTV sealer or attach the pipe adaptor with a 3” hose clamp and lock the “PL” vent clean out
tee or elbow onto the pipe adaptor. Don’t seal the entire 3” diameter pipe as you will not be able to
disassemble the pipe at a later date. The bead of silicone will act as a gasket right on the end of the 3”
pipe (D). Alternate Method: An approved type “PL” connector (pipe adaptor) may be used to allow
easy disconnect for maintenance. (The RTV sealant must be used in mobile home installation)
3) Attach all venting, clean out tees or elbows and straps into place.
4) NOTE: Make sure that you leave enough clearance between the wall, sides and the back of the unit
so that when you open the hopper lid you will be able to load fuel
5) Install type “PL” termination cap with rodent screen cap (optional) on outside end of pipe. Note: The
end of the exhaust pipe must extend a minimum of 12 inches from the outside of the building. Rodent
screen cannot be less that 3/8” opening mesh.
6) When installing combustion air from outside, cut a separate hole through the wall for the fresh air tube
This tube must be 3” minimum diameter only. Connect outside air pipe inlet on stove. This tube must
be terminated with a 90 degree elbow or hood. Care must be taken not to interfere with the operation
of the combustion-air draft damper. Always make sure that it moves freely.
INSTALLATION CONFIGURATIONS
WARNING
DO NOT INSTALL IN SLEEPING ROOM
UNIT MUST BE INSTALLED BY A
CERTIFIED/TRAINED INSTALLER

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WARNING: Improper operation of the unit and Creosoting will occur if exterior venting is
not enclosed in an insulated chase way.
Storm Collar
36” on a flat roof
3” clearance
around vent
24”
NOTE: It is not recommended
to install vertical venting on
the outside of the wall without
enclosing the venting in an
insulated chase way.
Whenever possible run the
venting on the interior.

20
Storm Collar
Design system to
accommodate the cold air
return (app. 24” of room
needed)