congratulations on your investment

congratulations on your investment
You have selected one of the simplest yet durably advanced outdoor furnaces on the
market today! The Spirit S4868P has been designed and built to old fashion quality
standards that have resulted in outstanding operating principals and longevity
To ensure that you get the maximum benefits and initiate safe operating principals, we
suggest you get to know your Spirit and read this manual from cover to cover before
operation. Although we have strived to include all possible scenarios for safe operation and troubleshooting of your furnace , there may arise a circumstance that is not
covered in this manual. NEVER attempt to make changes to the operating system
without authorization if it is not covered in this manual. Doing so could result in death
or injury to yourself or others.
Thank you for choosing The Spirit S4868P Outdoor Wood Burning Furnace.
We Hope you enjoy both the new comfort and savings created by your new Spirit Outdoor Wood Burning Furnace.
Model S4868P
Outdoor Furnace Guru, 511 Pine Street, Sparta, WI 54656
Tel. (608) 487-2013 Fax. (608) 487-9136
TESTED TO CSA B366.1-1991, UL 726-06
TESTÉ CSA B366.1-1991, UL 726-06
Although tested at one time, these units
will not come with a UL certification
Table of Contents
CSA label
Table of contents
Component Locations
Base Requirements
Installation Requirements & Cautions
Operation Procedures
A overview to burning the Spirit way
Filling the furnace with water
Starting a fire in the furnace
Loading the furnace with fuel
The burning cycle
Ash removal
Resetting the computer
Shutting down for the season
Cleaning the blower damper
Troubleshooting chart
Wiring diagrams
The Spirit Outdoor Wood Furnace should not be used as a stand alone unit. A backup system
should be in place in case of failure.
Burn seasoned firewood only. Green wood does not burn hotter and will cause inefficiency
and problems. NEVER burn other materials such as garbage, tires, engine oil, solvents,
gasoline or any other flammable liquids.
Start your fire with paper and kindling only! NEVER use gasoline, kerosene, charcoal lighter
fluid or any other similar liquid to start or freshen up a fire.
Operate your Spirit Outdoor Wood Burning Furnace at atmospheric pressure only! DO NOT
seal, clamp or tape any caps in place.
NEVER install the Spirit Outdoor Furnace inside another building! The Spirit is designed for
outdoor use only!
Do Not operate the furnace during power failure.
Do Not allow the furnace breath by providing combustion air through an open fire door.
Crack open the fire door slowly when opening to allow combustible gases to escape. Unburned gases can ignite and cause serious burns if the door is opened to quickly.
Keep the area 10 feet around your furnace clear of wood, paper and other combustible materials at all times.
Locate your Spirit Outdoor Wood Burning Furnace at least 50 feet from any buildings or structure. Check with your insurance company for additional requirements regarding the installation of your Spirit Outdoor Wood Burning Furnace to safe guard your coverage.
Use of a rain cap with spark arrestor is recommended.
Installation is to be done by a qualified installer only.
For additional information on safe burning4procedures, request the NATIONAL FIRE
PROTECTION ( Using Coal and Wood Stoves Safely), NFPA No. HS-10-1978. Address is NFPA,
470 Atlantic Ave., Boston, MA 02210.
Elite Heat 4868P Specifications
Total Width
Base Width
Total Length
Base Length
Firebox Length
Firebox width
Chimney size
Wood Length
Water Capacity (US gal)
Door Size
20 x 20
Heating Capacity*
Sq. Ft.
All measurements are expressed in inches.
Weights and measures may vary slightly.
*May vary according to home and climate conditions.
Furnace component name and locations
1-Float and vent tube
2-Float cap assembly
3-Water level indicator washers
4-Lifting eye
5-Rain cap/spark arrestor
(Not sold with furnace)
6-Insulated stove pipe
(Not sold with furnace)
7-Stove pipe adapter
(Not sold with furnace)
8-8” flue pipe
9-Upper level temperature gauge
10-Blower shut off switch
11-Door hinges
12-Base lifting and tie down tubes
14-Fire door safety latch
15-Fire door handle
16- Fire door latch
17-Fire door shield
Furnace component name and locations
Rear Access Area
(Shown with 2 pumps installed)
18– Computer controller
19– Mini fuse & main shut off switch
20– Blower
21– Blower mounting plate
22– Secondary return
23– pump receptacle box
24– primary return
25– secondary return
26– reservoir drain
27– temperature control probe
28– field wiring junction box
Component location and materials may vary by revision.
Base Requirements
Minimum Slab Dimensions
Represents furnace base
NOTE: When installing one set of lines for service to a single area, the lines
must come in to the unit on the primary side marked A for the furnace to sense
and operate properly. Secondary sets of line must come into the access area in
the area marked B.
When electing to use blocking instead of
a cement slab, support the furnace by
the lift tubes both front and back on either side.
Installation Requirements & Cautions
Use only chimneys suitable for solid fuel. Contact your dealer for instructions if additional chimney is needed . Do not connect to a chimney
flue serving another appliance. Use only non-combustible materials with
adequate support for a base. Maintain the following clearance to combustibles. Sides=36” Front=48” Top=12” Chimney connection=18”
Adhere to minimal clearances or fire may result!
Installation with existing boiler
This unit may not be connected to an existing boiler system unless a suitable water to water exchanger is used.
This unit shall be installed without interfering with the normal delivery of
heated water from the original boiler.
This unit shall be installed without affecting the operation of electrical and
mechanical safety controls of the original boiler.
Installation of this unit shall provide for a change over from one fuel to another without requiring manual adjustment of any controls or components
other than the thermostats.
Maintain adequate water capacity in this unit to prevent damage in the advent of a power failure.
Do not change the function of any controls or rewire the original boiler. A
wiring interconnection is permitted. The electrical system of both boilers
must be powered from a singe branch circuit without exception.
The operation of a gas boiler must be verified for acceptable operation before and after installation of this unit by a gas fitter who is recognized by
the regulatory authority.
Installation 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 gasfired)
Operational Procedures
Burn wood only!
WARNING! Risk of Fire
Do not operate with fueling door open! Keeping the door closed
tightly and seals in good condition is a must for proper operation.
Inspect and clean the flue regularly!
Use only CSA and UL approved double wall, insulated,
stainless steel chimney pipe when additional chimney height is
required. Additional chimney should be braced.
Do not operate during a power failure. Keep doors closed until
power is restored.
Do not store fuel or other combustibles within clearances!
Sides=36” Front=48” Top=12” Chimney connection=18”
Adhere to minimal clearances or fire may result!
Operational Procedures
A overview to burning the Spirit way
At fist glance, you will notice that the S4868P firebox is very simple
and similar to other outdoor wood furnace fireboxes on the market.
However, that is where the similarities stop.
The S4868P combustion area has been designed to accept large
wood loads without flooding the combustion chamber with to much fuel
release or to much combustion air. The S4868P regulates the air/fuel
ratio to burn a hotter more efficient fire. We call our burning method the
wick-burn/air-shear design. The result of burning with this method allows the S4868P to burn cleaner, hotter and more efficient than other
more common designs while maintaining a large firebox size. Large
firebox designs are appealing due to ones ability to cut wood larger,
saving valuable time preparing the winters fuel supply. Even though you
may be a veteran wood burner, we recommend that you study the following operational methods and adhere to them closely. Following the
set operational procedures will ensure that your furnace can do the
greatest amount of heating on the least amount of wood, and do it
Filling the furnace with water
The Model S4868P furnace has a water capacity of approximately
320 gallons. It is recommended that you estimate the filling time before
starting in order to prevent overflow. This can be done by timing how
long it takes to fill a 1 gallon pail.
1 gallon in 15 seconds
15 seconds x 320 = 4800 seconds
4800 seconds / 60 = 80 minutes
IMPORTANT: It is recommended that a flushing is performed before filling the unit to remove any foreign materials that may have found their
way into the water reservoir.
Operational Procedures
Filling the furnace with water
STEP 1 : Remove float cap assembly to one
side of the float and vent tube.
STEP 2 : Insert a garden hose into the float
and vent tube. Be sure that the hose is not
kinked or water flow will be affected, changing the calculated fill time.
STEP 3 : When the furnace is approximately
1/2 full, add the approved Outdoor Wood
Furnace water treatment.
STEP 4 : Continue to fill until the water level
is approximately 1 inch below the bottom of
the vent tube. This will allow for expansion
of the warming water to the proper water
level when the furnace is fired.
NOTE: If overflow occurs, drain excess water from rear at the reservoir drain
STEP 5 : Open any valves and check all installed plumbing for leaks.
STEP 6 : Apply power to the pumps and allow circulation and mixing to
occur of the treated water
Proper water level is 3-1/2” out of the
Top of the float cap assembly
These Measurements are at operational
temperatures(160-180 deg.)
Water should not be allowed to drop below
2” from the top of float cap assembly.
Operational Procedures
Starting a fire in the furnace
STEP 1 : Perform the following pre-firing checks.
 Does the firebox door move freely and seal?
 Does the combustion fan operate?
 Is the furnace water level correct ?
 Is the flue free from obstructions?
 Are there any leaks?
 Is the blower damper flap able to move freely?
 Is the pump circulating properly?
STEP 2 : Place paper or cardboard in firebox
approximately 3/4 the way back.
CAUTION! Hot surfaces.
Keep children away. Do not
touch during operation.
Always open door slowly!
STEP 3 : Place approximately 1 bushel of dry kindling on the front side of the paper
in a loose random fashion as shown.
NOTE: Establish a routine for firing techniques. Check daily for creosote build up until experience shows how often cleaning is necessary. Have a clearly understood
plan to handle a runaway fire.
Operational Procedures
Starting a fire in the furnace (continued)
STEP 4 : Make sure the blower switch is in the off position. Light a piece of paper
on fire and throw it to the back of the furnace. Immediately turn the fan switch to the
on position for 3 seconds and then turn off. This ensures that the fire will make contact with your starter fuel. Once the starter fuel has begun to burn, close the door
and immediately turn on the blower switch.
Lighting fire
Starter fuel igniting
Fan pushing fire into kindling
(Shown with the door open for instructional purposes only!)
Always open door slowly!
Burn dry seasoned wood only.
Store wood in dry covered area
outside of the require clearances
and out of the way of cleaning
and fueling the furnace. Establish a safe routine for fuel storage
and loading.
Never lean or reach into the firebox for any reason!
Start your fire with paper and kindling only! NEVER use
gasoline, kerosene, charcoal lighter fluid or any other similar
liquid to start or freshen up a fire!
Operational Procedures
Loading the furnace with fuel
STEP 5 : Allow the kindling to burn down to a coal bed. Turn the blower
switch off and open door slowly. Push the coal bed to the rear 25% of the
firebox with a long handled shovel.
Always open door slowly!
STEP 6 : Load fire wood just in side the door and rank as tightly as possible. Cut wood no longer than 36 inches. Longer cut wood will temporarily obstruct air flow and cost efficiency. Do not fill the firebox above
the indicated maximum load line.
NOTE: If firebox
becomes overfilled, turn the
blower switch off
and allow the fire
to die down before
removing any fuel.
Remove fuel to
proper containment for hot fuel.
Maximum load line
STEP 7 : Shut the furnace door and turn the blower switch to the on position.
Operational Procedures
The burning cycle
Please learn and follow the cycle of combustion and re-fueling in the
S4868P furnace. Doing so will increase the life of your unit by reduced
emissions, increase efficiency and decrease the amount of ash removal.
The S4868P furnace burns its fuel charge in a
wick form. This effectively controls the amount of
air and fuel that are allowed to mix, thereby creating a cleaner burn with hotter firebox temperatures. The greater the difference between the water temperature and the firebox temperature, the
more heat transfer power is available. This
equates to quicker recovery times and shorter
burn cycles. Notice to the left how the wood
charge has been consumed from the back to the
front. This is an appropriate amount of coal bed to
start up the next fuel charge.
Carefully push the remaining coal bed from
the previous fuel charge to the rear 1/3 of the firebox with a long handled shovel.
NOTE: Be aware that the hotter the fire, the
less creosote that is deposited and that weekly
cleanings may be necessary during mild
weather, even though monthly cleaning may
be enough in the coldest months. A Small intense is preferable to a small smoldering fire
to reduce the amount of creosote deposition.
Load the new fuel charge to the front of the firebox no higher than 3/4 up in the door frame. A
partial fuel charge is shown in the picture to the
left for educational purposes. Once you get to
know your furnaces demands, it would be good
practice to only load as much fuel as would be
needed to get you to the next convenient fueling
Operational Procedures
Ash removal
Ash removal, when used at maximum capacity, will be at 7 to 10 day
intervals, depending on ash content of the fuel being burned. For most,
ash removal will be at 21 to 30 day intervals. Ash is removed when it
builds up in the rear of the furnace enough that it noticeably affects air
flow. This will be noticed in more emissions (smoke) and longer cycling
times. When the furnace is used at 50% capacity or less, some ash
should be left in the firebox rear to protect your unit from going out on an
extended period of cycling time. The extra ash helps to hold the coals
while combustion air is not present.
The following is the suggested method for ash removal.
Always use a metal container with a lid to hold ash.
STEP 1 : Pull or keep a small bed of
coals to the front of the firebox.
STEP 2 : Remove remaining ash using
the rear of the furnace as a back stop.
STEP 3 : Push the coal bed to the rear
of the firebox and reload with fuel.
Operational Procedures
Resetting the computer
Your S4868P furnace is equipped with a fail safe in the event that it should drop below normal operating temperatures for a period of time. This would signify that there is
no heat being created in the firebox. The fail safe prevents the cold outside air from
blowing threw the firebox, helping to prevent a possible freeze up or wasting heat.
Follow these steps to reset the computer.
NOTE: All the required operating parameters are pre-set at the factory. Do Not try to alter these settings. Doing so may cause operating problems and will not be covered as a warranty item.
Press and hold these
two buttons (Down
arrow and SET) at the
same time for 1 second to reset the computer from a low alarm
(LA flashes intermittently with the current
water temperature).
The blower will start
within 7 seconds.
Disconnecting the power
for a couple of seconds
and turning it back on will
also reset the computer.
Power failures will not
change the settings within
or harm the computer.
Operational Procedures
Shutting down for the season
The following procedures should be taken to protect your investment
when not in operation for extended periods of time.
A. Scrape the inside of the firebox and flue clean of creosote and
ash build up and remove.
B. Spray down the inside of the firebox and flue with vegetable oil.
Do not use motor oil.
C. Cap the top of any chimney or the flue to prevent moisture
from entering the firebox.
D. Disconnect the power to the unit.
E. Check all caulk seam and gasket and repair as needed.
F. Make sure the water reservoir is full to prevent corrosion.
G. Draw a cool water sample before shutting down the pumps and
forward to the testing lab in the sample bottle provided with the
approved treatment. Follow the recommendations of the lab
for corrections, if any.
NOTE: Running your pumps during the off season for a period of 24
hours every other week will help keep pump seals from drying out.
Cleaning of the flue pipe, chimney and draft inducer is especially important at the end
of the heating season to minimize corrosion during the summer months from accumulated creosote and ash.
Water conditioning
Use only Wood Burning Furnace Water Treatment Part # WT072
from your dealer.
Product of:
A division of NCH Corporation
P.O. Box 2493
Fort Worth, Texas 76113-2493
1. Periodically inspect vent and
float tube for freeness.
3. Coat the inside of the firebox and
flue with vegetable oil when
clean and dry. Do not use motor oil!
2. Remove ash and scrape firebox
free of build up as needed.
4. Be sure the furnace reservoir is
to the maximum fill point.
3. Check water level daily.
5. Periodically circulate water during the off-season to keep the
treatment mixed thoroughly and
lubricate pumps. Circulate for 24
hours once every other week.
While in use
4. Check door for air tightness.
The door gasket may display
dark hard areas where leaks are
6. Cap chimney or flue to prevent
moisture from entering the firebox.
5. Ensure shields and access panels are in place at all times.
6. Watch for damp areas inside the
firebox. This could signify a
leak. Condensation during the
first fire or while burning unseasoned wood during warmer
weather may also be present.
Only burn seasoned wood and
clean out damp ashes immediately.
7. If needed, thoroughly clean the
blower and flapper assembly.
Use the following procedure outlined on page to check for correct operation of the flapper assembly.
After use (seasonal)
1. Thoroughly clean the furnace of
any creosote and ash. This is
the easiest to do when the furnace is still warm.
2. Check all parts of the furnace for
any standing moisture.
Cleaning the blower damper
The S4868P uses an air delivery system that draws unburned gases in with the
fresh air stream and pushes it back into the hot coals of the burning fire. Time, burning
green wood or overloading your furnace so that it is in the off cycle for long periods of
time, may cause the blower flapper to become dirty and hang up or stick closed. Use
the following tools and process for cleaning the blower flapper.
Tools Required
Disconnect Power
5/16” socket or nut driver
Utility knife
Wire brush
High temperature caulk
WD-40 or equivalent
High temperature grease
Carefully remove
3-5/16” self tapping
screws that retain
the blower to the
blower plate.
Position blower to the
side. Using a utility or
putty knife, remove the
caulk surrounding the
blower plate.
Blower Plate
Plate screws
Carefully remove 2-5/16”
self tapping screws that retain the blower plate to the
blower tube.
Notice: A new blower plate revision has significantly reduced
cleaning maintenance to seasonal
in most instances.
Cleaning the blower damper (continued)
Inside the blower tube
STEP 4 : Scrape and clean all creosote and deposits from the blower
plate, flapper and blower tube.
Firebox side of blower
plate and flapper
Penetrating fluid works well for cleaning between and in the hinge area.
Be sure that the hinge swings freely
when finished.
Cleaning the blower damper (continued)
Apply high temperature grease
(500 Degree or higher) within
the pivoting parts of the hinge.
The grease acts as a barrier to
the stickiness of the creosote
and helps keep it out of the
hinged area.
Replace the blower plate to the
blower tube. Be sure that the flapper seats well against the blower
pate and swings freely. If not, the
hinge may have been bent during
the cleaning process. Remove and
carefully adjust the hinge.
Apply high temperature caulk around
the blower plate, (500 Degree or
Cleaning the blower damper (continued)
Reinstall the blower. Be sure not to
over-tighten any screws during the
complete reassembly process.
Checking the flapper for correct operation
Disconnect power
To check the flapper for correct operation, insert a small diameter stiff
wire through the squirrel cage until the flapper can be felt. Gently push
the flapper open and closed. You should feel the free movement of the
flapper and hear the tick of it shutting against the blower plate.
Troubleshooting Guide
Boiling or higher than normal temperature
Low water temperature
Moisture present in firebox
Possible cause
Water not circulating
Check pump operation
Flapper sticking open
Clean flapper Pg. 20
Leaking door gasket
Replace door gasket
Door left open
Close door
Flapper not opening
Clean flapper Pg. 20
Blower not operating
Reset computer
Computer low alarm
Reset computer
Poor quality wood
Burn good seasoned wood
Green or poor quality wood
Burn good seasoned wood
Extreme low water tempera- Build up temperature
Leak present
Contact dealer
Water down the flue
Use a rain cap
Excessive smoke and creo- Green or poor quality wood
Flapper not opening properly
Fan not operating
Burn good seasoned wood
Clean flapper Pg. 20
Check low alarm
Improper burning procedure Follow burning procedure
Excessive sparks or fire out Wrong fuel type
the flue
Use proper fuel, fuel length
and loading recommendations
Improper burning procedure Follow burning procedure
Use spark arrestor
Wiring Diagram
Wiring Diagram
Digital controller
probe connects
digital controller
power supply
draft blower outlet
power supply
power from high
limit switch
Grounded 14 gage pig tail plug
S4868P Wiring Map
Blower outlet Wiring
Wire 1 - (BLACK) Distribution block (A,1) to blower switch 9’ 14 Ga. solid
Wire 2 - (RED) Blower outlet switch to limit switch 8’ 14 Ga. solid
Wire 3 - (RED) Limit switch to #4 on CPU 18” 14 Ga. stranded
Wire 4 - (BLACK) #5 on CPU to blower outlet 20” 14 Ga. stranded
Wire 5 - (White) Blower outlet white to distribution block (C,1) 20” 14 Ga. solid
Wire 6 - (Green) Ground on blower switch to frame 18” 14 Ga. solid
Wire 7 - (Green) Ground on blower outlet to distribution block (B,1) 18” 14 Ga. solid
Light Wiring
Wire 8 - (Blue) Distribution block (A,2) to light switch 9’ 14 Ga. solid
Wire 9 - (Black) Light switch to light black
Wire 10 - (White) Light white to orange wire nut in light switch box
Wire 11 - (White) Orange wire nut in switch box to distribution block (C,2) 9’ 14 Ga. solid
Wire 12 - (Green) Ground from light switch to frame 18” 14 Ga. solid
Wire 13 - (Green) Frame ground in rear to distribution block (B,2) 3’ 14 Ga. solid
Outlet Wiring
Wire 14 - (Black) Distribution block (A,3) to outlet 12” 14 Ga. solid
Wire 15 - (White) Outlet to distribution block (C,3) 12” 14 Ga. solid
Wire 16 - (Green) Outlet ground to distribution block (B,3) 12” 14 Ga. solid
CPU Wiring
Wire 17 - (Black) Distribution block (A,4) to #7 on CPU 12” 14 Ga. stranded
Wire 18 - (Blue) #8 on CPU to distribution block (C,4) 12” 14 Ga. stranded
Wire 19 - (White thermo wire) #1 on CPU to #9 on CPU
Wire 20 - (White thermo wire) #2 on CPU to #11 on CPU
Wire 21 - (White thermo wire) #11 on CPU to thermo-coupler
Wire 22 - (White thermo wire) #12 on CPU to thermo-coupler
Source Wiring
Wire 23 - Black from field wiring connection
to A on distribution block
Wire 24 - White from field wiring connection to
C on distribution block
Wire 25 - Green from field wiring connection to
B on distribution block
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