Hawken Energy GX10 User manual

Hawken Energy - GX10 | Owners Manual 1
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CONGRATULATIONS
You now own a Hawken. A boiler designed
with your needs in mind. Use this manual for
safety, installation and maintenance of your
new Hawken. Please read the entire manual
before installing or operating your boiler.
SAVE THESE INSTRUCTIONS.
Locate your Serial number and Model Number inside the
control box on the front of your Hawken.
Record your serial number and model number here:
Serial ___________________________
Model ___________________________
Please have this information available when contacting your
local dealer or Hawken Energy for warranty, service, etc.
Hawken Energy Inc.
PO BOX 351
Shelby, MI 49455
231-861-8200
www.HawkenEnergy.com
[e-mail]
SAFETY
DANGER
Risk of Fire or Explosion - Do not burn garbage, gasoline,
drain oil or other ammable liquids.
WARNING
Risk of Fire:
Do not use chemicals to start unit ring.
Do not burn garbage, gasoline, fuel oils, or other ammable
liquids or materials.
Do not operate with fuel-loading or ash-Removal doors
open.
Do not store fuel or other combustible materials within
marked installation clearances.
Inspect and clean ues and chimney regularly.
Do not pressurize this boiler.
Never operate boiler when water level is not completely full.
This boiler has a safety feature installed to prevent overheat-
ing. If water temp reaches 190 degrees, this safety feature
will disable blower fan and light. If no power to fan and
light, press red reset button in rear of boiler near junction
box.
Never operate boiler without a grounding rod properly
installed at boiler.
In the event of a runaway re turn off power to the unit.
CAUTION
Hot surfaces. Do not touch during operation. Keep face
away from door area.
Keep children away.
Load fuel carefully or damage to boiler may result. Always
take care to not allow hot coals or sparks from spilling out.
Always remove ashes into a covered, non-combustible
container. Do not allow ash level to build up above bot-
tom door frame. Do not allow ashes to build up on steel
surfaces.
Always comply with all applicable codes and regulations.
For safety keep ring and ash pit doors tightly closed.
Keep re and coals at least six inches back from door chute.
Keep ashes from piling against rebox rear plate. Do not
allow burning wood or coals to touch door, door frame or
door chute. Do not use inner door shield to push wood into
rebox. Place wood into rebox carefully to avoid damage
to the rebrick. Stack all wood in the same orientation, front
to back, to prevent bridging over the rebrick vents. Use
a variety of log sizes to maximize wood volume in rebox.
Always use dry, seasoned hardwood. Green wood will
create excessive creosote and hamper the full function of
your Hawken GX series boiler.
Disposal of Ashes: Ashes should be placed in a steel
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Tested to UL 2523-2009 Rev. 04.
For wood fuel only
Minimum Circuit Ampacity (MCA): 15A
Max Overcurrent Protective Device: 15A
Volts: 120 Amps: 15 Frequency: 60 HZ Phase: 1
Nameplate Illustration
487-O-01-2

2 Owners Manual | Hawken Energy - GX10
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Component Locations and Sticker Placement Guide
1 Insulated Chimney 12 Light & Blower
Switches
2 Lift Hook 13 Temperature Controller
3 Vent/Water Level
Indicator
14 Flue Area
4 Light 15 Feed Lines
5 Control Box Door 16 Return Lines
6 Firebox Door Handle 17 Electrical Junction -
Receptacle
7 Firebox Door 18 Blower/Solenoid As-
sembly
8 Secondary Burn
Chamber
19 Flue Access Door
9 Secondary Burn
Chamber Handle
20 Drains
10 Forklift Guides 21 Temperature Probe
11 Access Panel
Shelby, MI
Model: GX10
VOLTS: 120
AMPS: 15
FREQUENCY: 60 HZ
PHASE: 1
MINIMUM CIRCUIT AMPACITY
(MCA): 15A
MAX OVERCURRENT PROTECTIVE
DEVICE: 15 A
REFER TO OWNERS MANUAL
- FOR BASIC OPERATING INSTRUCTIONS AND MAINTENANCE INSTRUCTIONS
- SWITCH IN UP POSITION FOR BOILER ON, SWITCH IN DOWN POSITION FOR
BOILER OFF
- FOR WOOD BURNING ONLY
487-O-01-2
Solid Fuel Fired Boiler Assembly
USE A CHIMNEY CAP SUITABLE FOR WOOD COMBUSTION.
CLEARANCES: 16” SIDES AND REAR. 96” TOP.
FOR INSTALLATION ON NONCOMBUSTIBLE FLOORING ONLY.
LOAD FUEL CAREFULLY OR DAMAGE MAY RESULT.
NOT TO BE CONNECTED TO AN EXISTING BOILER SYSTEM. CONNECTION TO
PLATE EXCHANGERS IS ACCEPTABLE.
DANGER - RISK OF FIRE OR EXPLOSION
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLI-
ANCE.
DO NOT USE CHEMICALS OR FLUIDS TO START THE FIRE.
DO NOT BURN GARBAGE, GASOLINE, NAPHTHA, ENGINE OIL, OR OTHER INAP-
PROPRIATE MATERIALS
WARNING - RISK OF FIRE
THE HEAT EXCHANGERS, FLUE PIPE, AND CHIMNEY MUST BE CLEANED
REGULARLY TO REMOVE ACCUMULATED CREOSOTE AND ASH. ENSURE THAT
THE HEAT EXCHANGER, FLUE PIPE, AND CHIMNEY ARE CLEANED AT THE END
OF THE HEATING SEASON TO MINIMIZE CORROSION DURING THE SUMMER
MONTHS. THE APPLIANCE, FLUE PIPE, AND CHIMNEY MUST BE IN GOOD CONDI-
TION. THESE INSTRUCTIONS ALSO APPLY TO A DRAFT INDUCER.
UNIT WILL NOT OPERATE WITHOUT ELECTRICAL POWER.
DO NOT STORE SOLID FUELS WITHIN THE COMBUSTION CLEARANCES.
DO NOT OPERATE BOILER WITH DOOR OPEN. DO NOT LEAVE BOILER UNAT-
TENDED WITH DOOR OPEN.
No. ___________________
Tested to UL 2523-2009
CAN/CSA-B366.1-11
The U.S. Environmental Protection
Agency has determined, based
on test results from Omni, an
independent accredited laboratory,
that this model line meets the U.S.
EPA Hydronic Heater Voluntary
Program Phase 2 emission level.
To minimize smoke, always operate
your hydronic heater in accordance
with the manufacturer’s instructions
found in the owner’s manual.
Additional information about EPA’s
Program is available at www.epa.
gov/woodheaters.

Hawken Energy - GX10 | Owners Manual 3
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container with a tight-tting lid. The container of ashes
should be moved outdoors immediately and placed on a
noncombustible oor or on the ground, well away from
combustible materials, pending nal disposal. If the
ashes are disposed of by burial in soil or otherwise locally
dispersed, they should be retained in the closed container
until all cinders have thoroughly cooled. Other waste shall
not be placed in this container.
Do not allow ash level to build up above bottom door frame.
Take care to pull ashes away from rear steel of rebox.
Always comply with all applicable codes and regulations.
Do not store wood or combustible material within installa-
tion clearances. All cover plates, enclosures, and guards
must be maintained in place at all times, except during
maintenance and servicing.
In case of a power outage: Auxiliary power generator may
be used in the event of a power failure to prevent freezing
by unplugging the pump from the receptacle in the rear of
the unit and plugging it into the generator. To operate the
furnace for heating purposes if there is a prolonged power
failure it will be necessary to connect a generator to the
main power connection in the rear of the unit. It is accept-
able to wire the unit with a standard electrical plug to make
a generator connection easier.
Do not overll rebox. A small intense re is preferable to
a large smoldering one to reduce the amount of creosote
deposition. A Hawken GX series system requires circulation
of water to dissipate heat. Too much stored heat may cause
damage to your Hawken. For outdoor installation.
This boiler has a safety feature installed to prevent overheat-
ing. If water temp reaches 190-199 degrees Fahrenheit, this
safety feature will disable blower fan and aquastat. If no
power to fan, press red reset button in rear of boiler near the
junction/receptacle box.
Never operate boiler without a grounding rod properly
installed at boiler. Do not store fuel or other combustible
material within a minimum installation clearance of 16”
from the sides and rear, and 96” from the oor above top of
boiler. DO NOT install or operate, nor allow others to install
or operate boiler without rst reading, understanding and
following the Owner’s Manual.
COMPONENTS
COMPONENT IDENTITY MODEL
Blower Motor Fasco B24220
Blower Control Love/Dwyer TSWB-101
Snap Disk Thermo-Disk 60t11-610015
Burner ON/OFF
Switch
Leviton 145-2is
Firebrick Standard
Firebrick
Contact Hawken
Relay White Rodgers 90-341
Light Hampton Bay WB0317
(252-550)
Insulated
Chimney
Selkirk SPR6L24
DO NOT VOID YOUR WARRANTY
To keep your warranty valid, you must do the following:
Read, understand and follow your Owner’s Manual. Do not
burn garbage or any other unspecied fuels. Burning such
fuels causes damage to outdoor wood boilers and will void
your warranty. Properly install a grounding rod at the boiler.
Follow proper water treatment and testing procedures. Only
operate boiler when water level is completely full. Pump
must run continuously whenever boiler is being used.
Always install boiler with a Hawken authorized 6” chimney
cap (sold separately). Never operate or store boiler without
an approved chimney cap. Chimney extensions and
chimney caps should be locked to mating pieces. Support
chimneys higher than 8’ with wires or bracing. The Hawken
GX series utilize 6” stainless steel insulated chimney pieces.
Any extensions, accessories or cap must be of the same
make and material and should meet ULC-S610 and ULC-
S604. For best t, contact your Hawken rep or Hawken
Energy for authorized Hawken parts. Install Hawken water
lter kit on water loop (indoors) and clean regularly.
Submit Warranty Registration to Hawken Energy within 15
days of purchase.
Do not operate your furnace at temperatures below 140°F
except at startup and shutdown. If your heating load pulls
more heat than the rated output your operating tempera-
tures will drop below the recommended temperature range
of 172 to 182°F. Your furnace is equipped with an LED
indicator that alerts the operator if the temperatures drops
below 140°F. Do not alter the operating parameters of your
controller. Doing so may void your warranty.
Installation to be performed by a qualied installer and will
comply with all the requirements of the authority having
jurisdiction over the installation. Install boiler according to
Hawken Installation Guide and use only Authorized Hawken
parts and accessories.
Note: Check the Hawken web site for periodic product
updates and service bulletins. Visit www.HawkenEnergy.
com/servicebulletins/ at least semiannually and follow any
and all instructions listed.
Store rewood fuel in a dry location. Stack fuel carefully,
not higher than 5’. Do not store fuel within the installation
clearances of the unit. Do not store fuel in a way that it will
interfere with loading or maintenance operations of the unit.

4 Owners Manual | Hawken Energy - GX10
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Creosote - Formation and Need for Removal - When wood
is burned slowly, it produces tar and other organic vapors,
which combine with expelled moisture to form creosote.
The creosote vapors condense in the relatively cool chimney
ue of a slow burning re. As a result, creosote residue
accumulates on the ue lining. When ignited this creosote
makes an extremely hot re. The chimney connector and
chimney should be inspected at least twice monthly during
the heating season to determine if a creosote buildup has
occurred. If creosote has accumulated it should be removed
to reduce the risk of a chimney re. Establish a routine
of checking for creosote regularly. Check for creosote in
the rebox, and the blower chamber in the rear of the unit.
Check daily for creosote buildup until experience shows
how often cleaning is necessary. The hotter the re the
less creosote is deposited. Cleaning may be required more
often when the weather is milder and less often when the
weather is colder. Have a clearly understood plan to handle
a chimney re.
Use a chimney cap suitable for wood combustion.
Clearance to combustibles: 16” sides and rear. 96” top.
For installation on noncombustible ooring only.
Installation clearances must be adhered to. Not doing so
may result in a re hazard.
Load fuel carefully or damage may result.
Not to be connected to an existing boiler system.
Connection to plate exchangers is acceptable.
Do not connect this unit to a chimney ue serving another
appliance.
Do not use chemicals or uids to start the re.
Do not burn garbage, gasoline, naphtha, engine oil, or other
inappropriate materials
The heat exchangers, ue pipe, and chimney must be
cleaned regularly to remove accumulated creosote and
ash. Ensure that the heat exchanger, ue pipe, and chimney
are cleaned at the end of the heating season to minimize
corrosion during the summer months. The appliance, ue
pipe, and chimney must be in good condition. Ensure that
the blower/solenoid assembly and the air induction area are
cleaned thoroughly at least twice per burning season, more
as needed.
Unit will not operate without electrical power. Do not open
doors without power. Do not bypass controls during a
power failure.
Do not store solid fuels within the combustion clearances.
Do not operate boiler with door open. Do not leave boiler
unattended with door open.
The Hawken Energy GX series furnaces utilize rebrick
refractory to contain the high temperature burn of the
gasication process. Protect your rebrick by taking the
following precautions. Before start up check brick to make
sure there are no cracks or chips. Visually inspect the
lower burn chamber to make sure all the brick are standing
vertically, not tilted or out of place. Use caution when
loading wood into the rebox. Do not drop heavy pieces of
wood onto the brick. Use caution when raking or shoveling
ashes and coals. Do not operate furnace if pieces of brick
are missing. Wear and signs of stress are normal. Do not
alter or change your unit, including rebrick and insulation.
Insulation and rebrick are not covered by the warranty.
New brick may be obtained by contacting Hawken Energy.
Keep all doors closed when operating unit and maintain all
seals in good condition.
Do not block blower inlet fan area. Allow proper airow
around boiler. Keep insulation away from fan inlet.
Finding the Best Location for Your Hawken
When identifying the ideal location for your Hawken, please
consider the following:
Review the HPBA Best Burn Practices: http://static.hpba.
org/leadmin/PDFs/Tier_IV_Outdoor_Wood_Boiler_Best_
Burn_Practices_-_MH1.pdf.
When possible, have the boiler door open towards prevail-
ing winds. This helps disperse the smoke while loading
the boiler. When possible locate boiler 30 to 50 feet from
any structure. Consult with your insurance company for
minimum distances. Always install boiler with a Hawken
authorized chimney cap to reduce heat loss, keep rain out,
to serve as a spark arrestor, and to disperse smoke. Locate
boiler so that prevailing winds will not cause a nuisance for
neighbors. Protect your right to burn wood! When possible,
locate boiler downwind from nearby buildings. Hawken GX
series units are designed for low emissions. Some smoke
may be present, especially at startup and lling. Install on
non-combustible ooring with adequate support. Hawken
boilers do not require a cement slab. Boiler feet may be
set on 4-inch thick header blocks that are level, centered,
and properly supported. Hawken GX series boilers utilize a
unique frame design to allow forked lifting from three sides.
The unit is very heavy; please use caution. A lift loop is also
mounted to the top of the boiler for crane type lifting. A
concrete pad is not required for placement. 4 to 8 concrete
blocks may be used instead. Boiler base/feet may be set
on 4-inch thick header blocks that are level, centered, and
70.000
32.380
53.380
6.000
13.000
17.00
TYP.
2X 6.00
40.500
GX10 Footprint Drawing
Blocks Required
Blocks Optional
Punch-Outs for Insulated
Feed - Return Lines

Hawken Energy - GX10 | Owners Manual 5
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properly supported. If pouring concrete, don’t forget to
leave a space for the underground feed and return pipe.
Although outdoor prevailing wind and smoke considerations
should be given rst priority, your outdoor boiler location
selection may also minimize the amount of purchased pipe
required. Authorized Hawken underground pipe loses very
little heat, so longer distances will not cause signicant heat
loss, but reducing distance will reduce cost of purchased
pipe. Finally, keep in mind that the underground pipe must
enter the home or building to be heated, and plan for this
accordingly.
Preparing the Location for Your Hawken
When preparing the location for your boiler, please consider
the following:
When possible, install underground pipe before delivery and
placement of boiler. This simplies the placement process.
If installing boiler on a cement pad, it is recommended to
install underground pipe before pouring cement pad. Make
sure to leave a hole in cement pad (minimum 12” square)
between rear legs for underground pipe to connect to rear
of boiler. Installation should be performed by a qualied
installer. For customers who require chimney extensions,
insulated pipe is required. Contact Hawken to ensure that
the insulated chimney extensions you purchase mate with
the factory installed chimney on your unit.
Your warranty requires the use of Hawken authorized water
treatment. You MUST take the steps listed below to ensure
the proper operation of your Hawken. Further, your Hawken
and its components will receive better protection against
corrosion, your lter will require cleaning less frequently and
your system will last longer.
First Time Fill - Water Testing
1. Before you ll your boiler the rst time, purchase from
your Hawken Rep the appropriate amount of Hawken autho-
rized water treatment. Follow the directions on the bottle
for how much to add to your system. Your dealer will also
provide you with sample test bottles and labels so that you
can submit a water sample annually for laboratory testing
(follow instructions included with test bottles.)
2. Once your installation is complete, ll your new boiler so
that it is approximately half full of water. Make sure all valves
are closed. Do not ll boiler with water until your installation
is complete, and the drain valve is properly installed.
3. Add the appropriate amount of Hawken authorized water
treatment.
4. Fill your boiler until it is completely full of water. You will
know it is full when water spills out of the vent tube onto the
roof of the boiler.
5. Once full of water, do not start a re in your boiler yet.
6. Open all necessary valves, wait 5 minutes, then turn on
your pump. Allow the pump to circulate the water for at
least 2 to 4 hours.
7. After the pump circulates the water for at least 2 to 4
hours drain a small sample of water FROM THE DRAIN
VALVE LOCATED AT THE BOTTOM OF THE BOILER.
Follow the enclosed directions to send this water sample for
testing. You may now startup your boiler.
8. Once your water sample is received by the laboratory and
tested, you will receive a lab report containing the results
from your water sample test. Please be sure to legibly print
your information on the label provided. Please provide an
E-mail address where you would like your report to be sent.
If your water is found to contain anything harmful to your
Hawken, further action on your part will be specied in this
lab report. If any further action is required on your part,
you must comply with the instructions provided in the lab
report. Once you do so, you will then be required to submit
another water sample to the lab for testing. Please take this
sample according to instructions below under “Periodic
Testing”. A “satisfactory” water sample report must be on
le at Hawken to maintain your warranty and this must
be renewed annually. Please save reports for your own
records.
9. Follow instructions below for Periodic Testing. Your
Hawken authorized water treatment will indicate how often
such testing is necessary (currently once per year). Any
changes to this testing procedure will also be specied
in service bulletins posted at www.HawkenEnergy.com/
servicebulletins/ which you should check semiannually.
Periodic Water Testing
Periodic water testing must be completed at least once
per year. This is a free test, but in order to maintain your
warranty you must comply with the following instructions.
1. First, a sample of water must be taken from the boiler. To
do so, please observe the following steps:
a. The boiler must be turned off and cooled in order to take
the water sample. If the boiler is going to sit idle during the
summer months, it is best that testing and proper amounts
of water treatment chemical are added to the boiler prior to
the idle summer months.
b. NEVER DRAIN YOUR BOILER AND LEAVE IT EMPTY OF
PROPERLY TREATED WATER. Always have your boiler full
of properly treated water.
c. Let the re burn out. Allow the boiler to cool until the
water temperature is below 80 degrees F.
d. Remove the ash. Lightly scrape the inside of the rebox
to remove the ash.
e. Shut off the power to the boiler to stop the pump(s).
f. Make sure the ball valves to the pumps are in the open
position to avoid any air lock upon restart. Never attempt to
operate the pump(s) with the ball valves (to pumps) in the
closed position.
g. If you have a forced air furnace with a second Hawken
thermostat, turn the thermostat off.
h. Attach a hose to the water jacket drain at the bottom of
the boiler.
i. Open the water jacket drain until the water runs clear.
Close the drain. This is an important annual maintenance
item that ushes any sediment buildup from the boiler.

6 Owners Manual | Hawken Energy - GX10
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i-1. Repeat steps h and i from second drain.
j. Add chemical as needed. If a signicant volume of water
was required to be drained from the boiler to get the water
to run clear, rell the boiler using your in-house ll valve.
k. Turn on the power to the pump and circulate the boiler
water for 2 to 4 hours. Turn pump and power off again.
l. With a water sample bottle ready to ll, open the water
jacket drain again and ll the water sample bottle.
m. Turn power and pump back on, and return boiler to
service when ready.
2. Send water sample to laboratory for lab testing. Please be
sure to legibly print your information on the label provided.
Please provide an e-mail address where you would like your
report to be sent. Follow mailing instructions included with
the water sample test bottles.
3. A water sample report will be returned to you via e-mail
(be sure to include your e-mail on the label).
4. If the water sample lab report indicates that the
“Treatment level is satisfactory”, then no further action is
required. If the report indicates that the “Treatment level is
low”, then the lab report will specify what you need to do.
5. Carefully follow the instructions specied in the water
sample lab report (if any), and then send another water
sample to the lab for another test (see Step 1 above). A
“satisfactory” water sample report must be on le at
Hawken to maintain your warranty, and this must be
renewed annually. Please save reports for your own
records.
Hawken Startup/Shut Down
Hawken Startup Procedures
Please observe the following steps when starting the boiler:
1. Observe all safety precautions.
2. Ensure that the installation has been completed properly.
3. Make sure the boiler is full of water. Verify this with the
water level indicator AND by lling the boiler until water
ows out of the vent tube on the roof peak.
4. Make sure the boiler water has been properly treated with
authorized water treatment.
5. Open all valves. Allow 5 minutes for water to ll pump and
system.
6. Turn on power and make sure pump is running. Never
operate boiler without the pump fully circulating water.
7. Make sure fan switch is operational. Fan switch is located
on the front of the boiler inside the control box. Turning the
fan switch to the ON position (up).
8. The boiler water temperature is controlled by an elec-
tronic temperature controller. The temperature controller
comes set from the factory to 182°F high and 172°F low.
The temperature controller will automatically control the
blower to maintain the water temperature between this
range.
9. Build a small re in the rebox, and allow boiler tempera-
ture to rise SLOWLY.
10. When the temperature reaches 170°F, the boiler is ready
to be lled to capacity for full operation. Note: Gasication
furnaces rely on multiple factors. Full combustion efciency
may take 4 to 6 hours to be achieved. Smoke may be
visible during this time.
Hawken Shut Down Procedures
Please observe the following steps when shutting down the
boiler:
1. Observe all safety precautions.
2. Allow time for the re and coals to completely burn out.
3. Empty all the ashes and lightly scrape out the rebox
and secondary burn chamber to remove all ashes. Also
clean the heat exchangers in the rear of unit. See Hawken
Maintenance for more details.
4. Fill the system with water until it is completely full.
5. Flush and clean the in-line water lter.
6. Make sure the proper water treatment procedure is
followed (see “Periodic Water Testing”).
7. Make sure the chimney cap is in place to prevent rainwa-
ter from entering rebox.
8 If you have a forced air furnace with a second thermostat
controlling your indoor furnace blower fan, be sure to turn
off the power to this thermostat.
Operation
The Hawken GX series furnaces use a digital temperature
switch to regulate the unit’s temperatures. The 3 digit
display indicates the unit’s water temperature from a probe
at the rear of the furnace. The Digital Temperature Switch
has a high and a low set point for controlling the water
temperature. This control also has a conductivity probe
input. This input supplies 12 VAC to the probe to check for
low water condition. A water level sensor is connected to
the digital input. When the control detects an open signal,
the unit is low on water. In this case the water LED on the
face of the control lights and power to the air input for the
unit is shut off. When this happens it will be necessary to
rell the unit with water.
Fuel LED indicates the stove is out of wood or operating at
a temperature below 140°F.
Water LED indicates the unit is low on water.
In normal operation, the probe temperature will be shown on
the display.
In case of alarm or error, the following messages can be
shown:
• Erl = Memory Error
• ooo = Open Probe Error
• --- = Short Circuit Probe Error
There is no routine maintenance required for the tem-
perature switch. Do not alter the settings on your Digital
Temperature Controller.
Hawken Maintenance
The following maintenance items must be followed.
Remember to observe all safety precautions.
1. Check Water Level/Fill – Always keep the boiler full
of water. On a daily basis, check the water level indicator

Hawken Energy - GX10 | Owners Manual 7
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located in the vent tube at the peak of the roof towards the
front of the boiler. If not full, open in-house ll valve until
full. Normally, this step should be taken once a month by
opening the in-house ll valve for a few seconds until water
spills out on the roof of the boiler. Add water to boiler slowly.
2. Rake Ash Level/Remove As Needed – Before each
loading of the boiler with wood, rake coals level in the
rebox. Do not allow level of coals to rise above the bottom
level of the door frame. Remove ash/coals with a shovel as
needed to keep below this level.
3. Remove ash and coals every week and scrape rebox
clean. Never operate the boiler with a re in it with the
door open, except for brief periods while loading wood or
removing ash. Always remove ash into a covered, non-
combustible container. Clean ash from all rebox surfaces,
especially the rear plate. DO NOT ALLOW ASH TO BUILD
UP ON THE STEEL SURFACES.
4. Clean Lower Ash Chamber. Use caution. Only
open the lower front door when furnace is switched to
off position. Using the provided cleaning/scraping tool,
remove ash from lower chamber as necessary, at least every
week. Always remove ash into a covered, non-combustible
container.
5. Heat Exchanger Cleaning. Observe all safety precau-
tions. Wear gloves and eye protection. Turn off blower
before performing maintenance. Every other week remove
the rear top door from your furnace to clean the heat
exchange tubes (It is recommended that you perform the
rst cleaning 6 to 7 days after the initial ring). Remove the
rear top door by unscrewing the 4 wing nuts on the top rear
bolts and pulling the ash door out. Remove the stainless
steel deector from the left chamber. Use the provided
brush, to clean the heat exchange tubes. Clip the brush
to the extension wire. Feed the brush, handle (loop) rst,
into the tubes and pull brush through each tube to clean
and remove ash build up. To clean the vertical tubes in the
left-hand chamber feed the brush into the tubes, bristles
rst. Use a duster or vacuum to remove ash from exhaust
areas and drip tray under rear door. Clean your furnace
regularly to maintain the highest efciency. Replace door
after cleaning. See the video explaining these step further
at www.HawkenEnergy.com.
6. Inspect Catalyst. While cleaning the heat exchange
area check the catalytic disk. Make sure the catalyst is
well seated and clean. If deeper cleaning of the catalyst is
required visit www.HawkenEnergy.com for instructions.
7. Clean Air Feed Chamber – Smoke and creosote can
build up in the air feed chamber beyond the blower fan.
Remove the blower by uncoupling the latch behind the
blower on the outside of the air feed chamber. Tilt the fan
out and carefully remove the fan/solenoid assembly. Pull
the solenoid plate out of the box and remove creosote from
inside the box using a scraper tool. Carefully replace the
fan/solenoid assembly.
From the rebox push the 1.5” wire brush down into the
channel located in the rear left of the rebox. It may be
necessary to remove some of the rebrick, starting from the
back, to fully clean this channel. See the video explaining
these step further at www.HawkenEnergy.com. Clean the
air feed chamber every six months of operation or more
often as needed.
8. Inspect/Clean Filter (inside house/building) – Inspect
lter for any sediment. When necessary, ush lter by
opening the Filter By-Pass valve and close the valves on
both sides of the visible ow lter. This allows the system
to continue to circulate while you discharge the lter of all
collected materials. Open the ball valve on the clean water
side of the lter. Then, while holding a bucket under the
lter, open the valve at the bottom of the lter to ush out
the stainless steel lter, close that valve again once clear.
This method generally cleans the lter without disassembly.
Open both lter valves and close the by-pass valve. This
should be done once a month. Occasionally, the stainless
steel lter will appear dirty even after the above ush. In
such cases, open the Filter By-Pass valve and close the
valves on both sides of the visible ow lter. Filter and
housing can be very hot. Allow to cool before handling. The
lter can then be removed and cleaned by hand.
9. Door Rope/Seal – Inspect door seal re rope monthly
or as needed. Make sure door seals properly to prevent air
from entering boiler; this will cause the boiler to overheat
and can cause serious damage to the boiler. If necessary,
replace re rope. If necessary, adjust door for proper t.
Never operate the boiler with a re in it with the door open,
except for brief periods while loading wood or removing
ash. When replacing re rope or adjusting door for proper
seal, be sure to remove any fuel from boiler to prevent
overheating, since door may be open for more than a few
minutes.
10. Chimney/Flue Inspection – Inspect chimney and ue
monthly and clean as needed. Clean chimney and ue
annually. Perform cleaning and maintenance only when
no re is present in the rebox and ashes are cooled
completely.
11. Water Treatment – Ensure proper water treatment - see
above.

8 Owners Manual | Hawken Energy - GX10
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Wiring Diagram
Wiring Schematic

Hawken Energy - GX10 | Owners Manual 9

Return this page to Hawken Energy, Inc.
I have received and read or will read the Owners Manual completely before I install and/or re my Hawken Energy
outdoor wood boiler.
I agree to monitor and test the water in the system according to instructions in the Owners Manual.
I agree to burn wood only.
I agree to use properly installed grounding rod at the outdoor wood boiler, and to use only Hawken authorized
parts in my outdoor boiler installation.
I agree to follow all the operations and maintenance procedures listed in the Owners Manual.
I acknowledge that my failure to abide by the above shall operate to void these warranties.
Warranty Registration
Serial No. _______________________ Model __________________________ Date of Purchase _____________________
Name _________________________________________________
Last First Middle Initial
Street _________________________________________________________________________________
City ____________________________ State/Prov. ________________________ Zip/Postal Code_____________________
E-mail ________________________________________________________________________
Phone _______________________________
How did you rst hear of Hawken Boilers? _________________________________________________________________
Rep Name ________________________________________ City _________________________ State _________________
Owners Signature _______________________________________________________________________________________
(All information must be included)
I have read and understand the warranty. Acknowledgement of your warranty registration will be sent to you upon receipt
by Hawken Energy Inc. If you do not receive such acknowledgment within two months, please contact your dealer/rep or
Hawken Energy. Hawken Energy does not disclose this information to outside sources.
Mail to Hawken Energy, P.O. Box 351, Shelby, MI 49455
Follow these important steps to keep your warranty valid:
Rake ashes in primary re box. Do not allow ashes to build up on steel surfaces in rebox.
Remove ashes from secondary burn chamber every three days or as needed.
Do not overll your boiler. Do not use the inner door shield to force wood or ashes into the rebox.
Clean the rear heat exchanger every 2 weeks or more often if needed to maintain efciency.
Submit a water sample to Hawken for testing at least once every 12 months. Add water treatment as needed according
to the instructions in the Owner’s Manual.
Add water to the boiler as needed. Do not operate the boiler with low water levels.
Inspect door rope seals and replace as needed
Follow all maintenance and other instructions specied in the Owner’s Manual.
Mail to:
Hawken Energy
P.O. Box 351
Shelby, MI 49455

10 Owners Manual | Hawken Energy - GX10
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Dear New Hawken Owner,
Thank you for purchasing a Hawken Energy outdoor furnace and registering your furnace warranty. Below you
will nd a brief survey about your furnace purchasing experience. Please complete this with your warranty registra-
tion. Other Hawken customers have helped us in the same way and we always appreciate the opportunity to consider
your input.
1. Did you get other estimates before deciding on Hawken Energy? ___Yes ___No
2. What other brands did you consider? ____________________________________________________
3. Why did you decide on a Hawken Energy outdoor furnace? (check all that apply)
___Reputation ___Warranty ___Product Features ___Factory Rep
___Recommendation ___Lowest Price ___Other______________________
4. How did you hear about our company? (check all that apply)
___Word of mouth ___Internet ___Newspaper
___Magazine_________________ ___Show____________________
___Other____________________ ___Highway Display Furnace
5. Was your installation done in a real and professional manner? ___ Yes ___ No ___ Self Install
6. Please describe your overall satisfaction with the Hawken Furnace.
___Very Satised ___Somewhat Satised ___Somewhat Unsatised __Very Unsatised
7. Please describe your overall satisfaction with the Hawken Factory Rep.
___Very Satised ___Somewhat Satised ___Somewhat Unsatised __Very Unsatised
7. Would you recommend Hawken Energy to your friends and neighbors? ___Yes ___No
Comments:_______________________________________________________________________________________________
_________________________________________________________________________________________________________
_________________________________________________________________________________________________________
_________________________________________________________________________________________________________
_________________________________________________________________________________________________________
Thank you for completing this survey. We would also appreciate photos of you and your Hawken Furnace to accom-
pany this survey. Look us up on Facebook for updates, news and contests. www.facebook.com/HawkenEnergy.
Warm Wishes,
Donald Squire

Hawken Energy - GX10 | Owners Manual 11

Return this page to Hawken Energy, Inc.
I have received and read or will read the Owners Manual completely before I install and/or re my Hawken Energy
outdoor wood boiler.
I agree to monitor and test the water in the system according to instructions in the Owners Manual.
I agree to burn wood only.
I agree to use properly installed grounding rod at the outdoor wood boiler, and to use only Hawken authorized
parts in my outdoor boiler installation.
I agree to follow all the operations and maintenance procedures listed in the Owners Manual.
I acknowledge that my failure to abide by the above shall operate to void these warranties.
Warranty Registration
Serial No. _______________________ Model __________________________ Date of Purchase _____________________
Name _________________________________________________
Last First Middle Initial
Street _________________________________________________________________________________
City ____________________________ State/Prov. ________________________ Zip/Postal Code_____________________
Email ________________________________________________________________________
Phone _______________________________
How did you rst hear of Hawken Boilers? _________________________________________________________________
Rep Name ________________________________________ City _________________________ State _________________
Owners Signature _______________________________________________________________________________________
(All information must be included)
I have read and understand the warranty. Acknowledgement of your warranty registration will be sent to you upon receipt
by Hawken Energy Inc. If you do not receive such acknowledgment within two months, please contact your dealer/rep or
Hawken Energy. Hawken Energy does not disclose this information to outside sources.
Mail to Hawken Energy, P.O. Box 351, Shelby, MI 49455
Follow these important steps to keep your warranty valid:
Rake ashes in primary re box. Do not allow ashes to build up on steel surfaces in rebox.
Remove ashes from secondary burn chamber every three days or as needed.
Do not overll your boiler. Do not use the inner door shield to force wood or ashes into the rebox.
Clean the rear heat exchanger every 2 weeks or more often if needed to maintain efciency.
Submit a water sample to Hawken for testing at least once every 12 months. Add water treatment as needed according
to the instructions in the Owner’s Manual.
Add water to the boiler as needed. Do not operate the boiler with low water levels.
Inspect door rope seals and replace as needed
Follow all maintenance and other instructions specied in the Owner’s Manual.
Customer Copy

12 Owners Manual | Hawken Energy - GX10
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20 Year Limited Warranty
Hawken Energy, Inc. (“Hawken Energy”) warrants to the rst retail purchaser that the parts
manufactured by Hawken Energy and included as part of the furnace known as GX Series shall be
free from defects in workmanship. This warranty is effective for a period of twenty years from the
date of purchase; provided that the rst retail purchaser timely complied with the warranty registration
requirements described below. Upon notice of a warranty claim, Hawken Energy shall have the option
of repairing or replacing the defective part or refunding the purchase price of the furnace.
Hawken Energy further warrants to the rst retail purchaser that the rebox assembly of the GX Series furnaces
shall be free from corrosion. This warranty is effective for a period of twenty (20) years from the date of purchase;
provided that the rst retail purchaser timely complied with the warranty registration requirements described below.
More specically, Hawken Energy will provide warranty coverage due to corrosion for the cost of the parts only,
based on the following pro-rated scale: for years one through ve at 100% of Factory Retail Prices; for years six and
seven at 75% of Factory Retail Prices; for years eight through ten at 40% of Factory Retail Prices; and in the years
eleven through twenty at 25% of Factory Retail Prices. Upon notice of such a warranty claim, Hawken Energy shall
have the right to replace or repair the parts at its option.
Hawken Energy further warrants to the rst retail purchaser that the electrical components in the GX Series furnaces
shall be free from defects during normal usage for a period of one year from the purchase
date; provided that the rst retail purchaser timely complied with the warranty registration requirements described
below. Upon notice of such a warranty claim, Hawken Energy shall have the option to replace or repair the defective
components.
Hawken Energy reserves the right to modify the design of any furnace at any time and for any reason.
The liability of Hawken Energy shall not exceed the repair or replacement value of the defective parts and does not
include any costs for labor to remove and reinstall the alleged defective part, transportation to and from the factory,
the costs of plumbing, the costs of replacement water or water additives, and any other materials required to make
the repair. The warranties described above do not cover defects, corrosion or malfunctions resulting from: (i) failure
to properly install, operate or maintain the furnace in accordance with Hawken Energy’s published Owner’s Manual;
(ii) the workmanship of any installer or repairman of the furnace; (iii) abuse, misuse, alteration, accident, re, ood,
negligence or acts of God; (iv) freezing or overheating; (iv) any unauthorized work or alterations to the furnace;
(v) improper water treatment or ash removal procedures, or (vi) normal wear items including without limitation door
gaskets, paint, chimney components, rebrick, cleaning tools, catalytic combustor, and air deector.
These are the only warranties given by Hawken Energy as regarding GX Series furnaces. No one is authorized
to make any other warranties on Hawken Energy’s behalf. THESE WARRANTIES ARE IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES
OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY. HAWKEN ENERGY EXPRESSLY
DISCLAIMS AND EXCLUDES ANY LIABILITY FOR CONSEQUENTIAL, INCIDENTAL, INDIRECT OR PUNITIVE
DAMAGES FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY. Defects in components incorporated into
the furnace (including, the aquastats, pumps and fans) but not manufactured by Hawken Energy, shall be governed
by the terms and conditions of the relevant component manufacturer’s warranties, if any. Other furnace models,
including HE-750, HE-1000, HE-1100, HE-2000, HE-2100, HE-3000, HE-4000, and HE-5000 are covered under a
separate warranty.
In order for the warranties described above to be effective, the rst retail purchaser must deliver a signed warranty
registration in the form below to Hawken Energy within fteen (15) days of purchasing the furnace along with a copy
of the original invoice from the dealer or representative conducting the sale.