Central Boiler CLASSIC EDGE 760 TITANIUM HDX User manual

OWNER’S MANUAL
SAVE THESE
INSTRUCTIONS
(p/n 9001001 - REV. A)
WARNING: If the information in this manual is not followed exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
– Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other appliance.
– WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch.
• Immediately call your gas supplier. Follow the supplier’s instructions.
• If you cannot reach your gas supplier, call the re department.
– Installation and service must be performed by a qualied installer, service agency or the gas supplier.
OUTDOOR WOOD FURNACE
0117WB036S
0117WB039E
CLASSIC EDGE 760
TITANIUM HDX
CLASSIC EDGE 560
TITANIUM HDX
CLASSIC EDGE 360
TITANIUM HDX

CentralBoiler, Inc. • 20502 160th Street • Greenbush, MN 56726
CentralBoiler.com
For parts and accessories, service or repairs, call your authorized Central Boiler dealer or heating contractor. Record
the information below for future reference.
Model Serial Number Installation Date
Dealership Name Phone Number
Owner Name
e Classic Edge outdoor hydronic heater by CentralBoiler is listed by OMNI-Test Laboratories to the applicable portions of the
following standards: UL 2523-2018 Solid Fuel-Fired Hydronic Heating Appliances, Water Heaters and Boilers, CAN/CSA B415.1-10
(R2015) Performance Testing of Solid-Fuel-Burning Heating Appliances, CSA-B366.1-11 (R2015) Solid-Fuel-Fired Central Heating
Appliance, ASTM E2618-13 Standard Test Method for Measurement of Particulate Emissions and Heating Eciency of Solid Fuel-
Fired Hydronic Heating Appliances, ASTM E2515-11 Standard Test Method for Determination of Particulate Matter Emissions
Collected by a Dilution Tunnel.
e Classic Edge includes two 4-foot stainless steel insulated chimney sections. Use only stainless steel solid fuel chimneys specied by
CentralBoiler. Maximum draft is marked on nameplate.
French Owner's Manual is available at CentralBoiler.com/support or upon request from your dealer
(Manuel d'installation en français disponible sur demande auprès de votre revendeur)
CLASSIC EDGE 760 Annual Eciency Rating*: 89.8% (lower heating value), 83.4% (higher heating value)
Manufacturer's Rated Heat Output Capacity: 245,000 Btu/hr | Range**: 0 to 235,938 Btu/hr.
Water Capacity: 330 gal. | Weight: 2,186 lbs
CLASSIC EDGE 560 Annual Eciency Rating*: 90.2% (lower heating value), 83.8% (higher heating value)
Manufacturer's Rated Heat Output Capacity: 200,000 Btu/hr | Range**: 0 to 194,724 Btu/hr.
Water Capacity: 205 gal. | Weight: 1,668 lbs
CLASSIC EDGE 360 Annual Eciency Rating*: 88% (lower heating value), 82% (higher heating value)
Manufacturer's Rated Heat Output Capacity: 150,000 Btu/hr | Range**: 0 to 148,625 Btu/hr.
Water Capacity: 150 gal. | Weight: 1,460 lbs
*Performance is a product of the combustion rate, combustion eciency and heat exchange eciency with a single fuel load without refueling. Results
vary based on wood species, wood quality, wood quantity and moisture content. Eciencies are determined under the same test conditions using
higher heating value, lower heating value and annual fuel utilization eciency (AFUE).
• is heater meets the 2020 U.S. Environmental Protection Agency's cord wood emission limits for wood heaters sold after May 15, 2020.
Under specic test conditions this heater has been shown to deliver heat at rates shown for the respective model above**.
• is wood heater has a manufacturer-set minimum low burn rate that must not be altered. is wood heater needs periodic inspection and
repair for proper operation. It is against federal regulations to operate this wood heater in a manner inconsistent with operating instructions in
this manual.
• DO NOT OVERFIRE THIS HEATER. Attempts to achieve heat output rates that exceed heater design specications can result in permanent
damage to the heater.
• Any person(s) operating a hydronic heater must comply with all applicable laws, including but not limited to local ordinances.
• Improper use or failure to maintain the hydronic heater may cause nuisance conditions. e person(s) operating a hydronic heater is/
are responsible for operation in a manner that does not create a nuisance condition. Meeting the setback distance and stack height
recommendations from the manufacturer and requirements in applicable State and local regulations may not always be adequate to prevent
nuisance conditions in some areas due to terrain or other factors.
• Operating an outdoor furnace may not be suitable to some individuals' abilities or lifestyles. Be sure to review the Owner's Manual for the
appliance with your dealer.
- Register at time of purchase for FREE 25 Year Limited Warranty -
Verify your warranty and check status of water samples at: CentralBoiler.com/w25
TM

Contents
How to Use This Guide
e guide is divided into sections
to help with the operation and
maintenance of the outdoor furnace.
If questions arise that are not
answered with this manual, consult
with your authorized CentralBoiler
dealer.
Central Boiler Online Resources................................................................. Iv
EPA Resources ............................................................................... iv
Labeling and Terminology ......................................................................1
Important Precautionary Information ................................................. 2
Foundation...................................................................................4
Access to Ports on Outdoor Furnace ..............................................................5
Ground Rod Kit ...............................................................................7
Furnace Installation - Connecting toYour Existing System ...........................................7
Outdoor Wood Furnace Best Burn Practices........................................................9
Chimney Recommendations ....................................................................9
Chimney Installation...........................................................................9
Water Quality and Maintenance ..................................................... 12
Test Supply Water ............................................................................12
Adding Initial Water Treatment .................................................................12
Immediately Start the Pump(s) and Heat the System Water to 185˚F (85˚C)...........................13
Test the Treated System Water..................................................................14
Send in Initial Water Sample ...................................................................14
Initial Water Sample ..........................................................................15
Deferred Installation..........................................................................15
Check Status ofWater Sample..................................................................15
Annual Water Sample .........................................................................15
Water Samples...............................................................................15
System Maintenance .........................................................................16
Water Test Kits and Test Results.................................................................16
Flushing the System ..........................................................................17
Adding Antifreeze to Outdoor Furnace System ....................................................18
Wood Selection and Preparation ..................................................... 19
Operating Instructions ............................................................. 20
FireStar Combustion Controller .................................................................20
How the Classic Edge Works....................................................................20
Initial Fire Up - Start of Heating Season ..........................................................22
Adding Heat Load ............................................................................24
Ash Removal Frequency .......................................................................25
Adding Wood ................................................................................25
Maintenance Schedule ............................................................. 31
Control Locations.............................................................................31
Routine Maintenance .........................................................................31
Maintenance Sections ........................................................................32
Serviceable Items.................................................................. 44
Firebox Door Hinge / Latch Bearing Adjustment...................................................44
Firebox Door Seal.............................................................................44
Reaction Chamber Door Seal ...................................................................46
Heat Exchanger Door Seal .....................................................................47
Circuit Breaker ...............................................................................48
Airbox Seal..................................................................................49
Air ChargeTube And Refractory Modules.........................................................50
Thermocouple ...............................................................................51
Heat Exchanger Door Insulation ................................................................52
Heat Exchanger Access Cover Insulation..........................................................53
Combustion AirTube / Front Air Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Troubleshooting................................................................... 56
GENERAL INFORMATION............................................................. 65
WIRING DIAGRAM.................................................................. 66
WATER SAMPLE INFORMATION - TITANIUM SERIES MODELS ............................... 67

CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
INSTALLATIONS IN MASSACHUSETTS:
1. All installation components must be products approved in the Commonwealth of Massachusetts by the Gas and Plumbing Board.
2. e maximum run of tubing from the water heater to a fan coil is 50 linear feet.
3. Persons operating this hydronic heater are responsible for operation of the hydronic heater so as not to cause a condition of air pollution as
dened in 310 CMR 7.01(1).
Videos to supplement the Owner's Manual are available at
www.youtube.com/centralboilerinc
Watch tips on initial startup, testing system water and more.
CentralBoiler.com/Support
Online Support Center
Write your serial number here for future reference.
EPA RESOURCES
EPA's Burnwise Program - https://www.epa.gov/burnwise
How to Use a Moisture Meter Video - http://www.youtube.com/watch?v=jM2WGgRcnm0
EPA oers tips on how to properly use a moisture meter to test rewood before using in a wood-burning stove or replace. Wet wood can create
excessive smoke which is wasted fuel.
Split, Stack, Cover and Store Video - http://www.youtube.com/watch?v=yo1--Zrh11s
EPA oers four simple steps to properly dry rewood before using in a wood-burning stove or replace. Wet wood can create excessive smoke
which is wasted fuel. Burning dry, seasoned rewood with a moisture content of 20% or less can save money and help reduce harmful air
pollution.
Resources to Help Burn Wood the Right Way - https://www.epa.gov/burnwise/resources-help-you-burn-wood-right-way-and-
promote-burn-wise-program
Find tip sheets, brochure and yers, and more information.
NOTE: The warranty can be voided by operating a residential hydronic heater in a manner inconsistent with the Owner's Manual.
CENTRAL BOILER ONLINE RESOURCES
Enter CentralBoiler.com in your browser or scan the code using any QR code reader app on your smartphone to access
CentralBoiler's library of information to help with installation, operation and maintenance of your CentralBoiler outdoor furnace.
Detailed Furnace Installation Variations - https://www.CentralBoiler.com/explore/furnace-installation/
View and/or download PDFs to assist in installation of your outdoor furnace. Information and examples
regarding pumps, foundations, chimneys and support structures, ermoPEX piping, and example congurations
for a variety of heating congurations.
Online Support Center
https://www.CentralBoiler.com/Support/
Enter your furnace serial number and nd articles,
answers, parts and more information.

1
CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Labeling and Terminology
e outdoor furnace and this guide use the following terms and symbols to
bring attention to the presence of hazards of various risk levels and important
information concerning the use and maintenance of the outdoor furnace.
This symbol and text indicate an imminently hazardous situation which, if ignored,
will result in death or serious injury.
This symbol and text indicate the presence of a hazard which can cause severe personal
injury or death to an operator or bystander, or substantial property damage if ignored.
CAUTION
This symbol and text indicate the presence of a hazard which can cause minor personal
injury or property damage if ignored.
NOTE: Indicates supplementary information worthy of particular attention relating
to installation, operation, or maintenance of the outdoor furnace but is not related to a
hazardous condition.
Be sure to follow all instructions and related precautions as they are meant for
your safety and protection. Store this manual in a readily accessible location for
future reference.
- Measurement (G) includes two 4 ft (1.2 m) chimney sections.
- All measurements are approximate
- Measurement (F) is from firebox door to chimney inspection cover.
Classic Edge 760 Measurements
A B C D E F G IH
cm
in. 51 84.75 59.75 53.5 60.5 5 3979 164
130 215 152 136 154 13 99201 417
Classic Edge 560 Measurements
A B C D E F G IH
cm
in. 42.5 76 55.5 45 56 5 37.573.5 151
108 193 141 114 142 13 95187 384
Classic Edge 360 Measurements
A B C D E F G IH
cm
in. 40.5 72 50.75 43 51.5 5 3869 150
103 183 129 109 131 13 97175 381
I
DG
E
B
A
H
F
C

2CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Important Precautionary Information
Be sure to read carefully and understand these precautions before, during and after the installation, operation and
maintenance of the furnace.
NOTE: All operations must be in accordance with local and state
codes which may dier from the information in this manual.
CAUTION
This outdoor furnace is not intended to be the only source of
heat. In the event of a prolonged power failure, a generator
may be used to prevent lines from freezing. Should the outdoor
furnace be left unattended, run out of fuel or require service, an
alternate heating source in the building being heated should
be in place to prevent damage caused by freezing.
This outdoor furnace and/or chimney is not intended or safety
tested to be used or installed in a building where contents of
that building could be damaged or where a nancial loss could
occur from smoke, soot, re or water.
The outdoor furnace vent cap must t loosely on the vent
opening. Do not force the cap down or try to seal it tightly onto
theventpipe.Donotextendorrestricttheventpipe or opening.
DO NOT ALLOW THE OUTDOOR FURNACE TO BE PRESSURIZED.
REMOVE STRAPPING FROM
VENT BEFORE FILLING
WITH WATER.
Vent Cap Must
Fit Loosely
WARNING
Be sure the outdoor furnace is lled with water before ring.
Never re the outdoor furnace when the water level is more
than 1" (2.5 cm) below the FULL mark on the sight gauge.
MolyArmor 350 must be added before the initial ll (see Water
Quality and Maintenance).
Disconnect the electrical power to the outdoor furnace before
replacing an electrical component.
Do not attempt service inside the electrical control panel
without rst disconnecting the electrical power at the main
power source.
NOTE: Any electrical installation should be done by a qualied
installer in accordance with applicable codes.
Allow the outdoor furnace to thoroughly cool and completely
clean out the rebox before draining water from the outdoor
furnace. If the water in the outdoor furnace ever boils, be sure
to check the water level and restore to full. If water is added,
the proper level of MolyArmor 350 Corrosion Inhibitor (p/n
2900630) must be maintained.
When cleaning the outdoor furnace, be careful not to spill any
coals.
ALWAYS store ash in a covered non-combustible container.
Maintain the following clearances from combustibles for the
furnace installation:
• 44" (112 cm) from the back
• 12" (30.5 cm) from the sides
• 48" (122 cm) from the front
• 18" (46 cm) from chimney inspection cover
• The foundation must be noncombustible
Do not allow combustible materials (straw, hay or wood) near
the outdoor furnace. Keep the perimeter of the outdoor furnace
clear and clean.

3
CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
For re safety, keep all combustible materials at least six feet
(two meters) away from the outdoor furnace, especially around
the door area. Debris of wood chips and other combustibles in
the area may be easily ignited if a hot coal is spilled out of the
rebox and left unnoticed.
The rebox door must be closed and latched at all times except
when lling the rebox with wood. Leaving the rebox door
open may lead to a runaway re. In the event of a runaway re,
close the rebox door. In the event of a chimney or soot re,
close the rebox door and make sure power is o to the outdoor
furnace.
All covers must be maintained at all times except during
maintenance, inspection and service.
When opening the rebox door, the door switch will shut o the
primary air actuator motor while the rebox door is open. Do
NOT disable the door switch.
NOTE: The prohibition against burning these materials does not
prohibit the use of re starters made from paper, cardboard, saw
dust, wax and similar substances for the purpose of starting a re
in an aected wood heater.
NOTE: Do not use chemicals or uids to start the re. Use kindling
or gas-red wood ignition option to start an initial re.
NOTE: The sight gauge valve should always be closed, except when
checking water level. Water will automatically drain from the
sight gauge tube when the valve is closed. Remember that this
type of valve requires only 1/4 turn to open or close.
Thisheateris designedtoburn naturalwoodonly. DO NOTBURN:
unseasoned wood, treated wood, colored paper, cardboard,
trash or garbage.
NOTE: Chloride or sulfurous gases can be generated if plastic or
rubber is burned and will mix with the moisture from the wood
and form hydrochloric or sulfuric acids in the rebox, creating
corrosion.
NOTE: This outdoor furnace is not to be used with an automatic
stoker.
CAUTION
This outdoor furnace is not to be connected to a chimney ue
serving another appliance.
When adding wood to the rebox, be careful not to get pinched
between the wood and the door frame, or any part of the
outdoor furnace. Use extreme care with large pieces of wood
that may be dicult to handle.
NOTE: At least one circulation pump must run continuously to
ensure proper operation of the outdoor furnace.

4CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Do not use any combustible
materials for the foundation.
CAUTION Outdoor furnace must be installed on a noncombustible surface or foundation that incorporates an enclosure that will prevent supply and
return lines from possible exposure to sunlight, re, or physical damage that may be caused by an occurrence outside the outdoor furnace
enclosure. Foundation may consist of concrete, crushed rock, or patio blocks.
Classic Edge 760
(Foundation Optional)
59.75"
(152 cm)
51"
(130 cm)
7"
(18 cm)
11"
(28 cm)
Front
28"
(71 cm)
Classic Edge 560
(Foundation Optional)
55.5"
(141 cm)
42.5"
(108 cm)
7"
(18 cm)
8"
(21 cm)
Front
24"
(61 cm)
Classic Edge 360
(Foundation Optional)
50.75"
(129 cm)
40.5"
(103 cm)
7"
(18 cm)
8"
(21 cm)
Front
23"
(59 cm)
Foundation
e outdoor furnace may be installed directly on stable, level ground without
the necessity of a foundation, although installing the outdoor furnace on a
foundation oers many advantages. e outdoor furnace is less likely to move
due to frost heaving. A foundation keeps the area directly around the outdoor
furnace free of standing water and can help to keep unwanted pests out. It can
also raise the furnace up to provide a more comfortable height of the rebox
door opening.
If the ground is unstable, one option is to use patio blocks under the perimeter
of the base. Another option is to pour a concrete foundation.
To install the outdoor furnace on a concrete foundation, refer to the illustration
for dimensions and for the location of the hollowed-out area for each model. A
4" to 6" (10 to 15 cm) thick concrete slab works well; however, a thicker slab
may be used to obtain the desired door opening height.
If the area for the concrete slab is unstable and/or aected by frost heaving,
consider installing 2" closed-cell insulation beneath the front portion of the
slab and under the area of the ground used for walking.
CAUTION
Do not use any combustible materials for the foundation.
NOTE: The installation surface or foundation must be noncombustible. The hot supply and
return lines must also be protected from possible exposure to sunlight, re or physical
damage that may be caused by an occurrence outside the outdoor furnace enclosure.
Foundations may consist of concrete, crushed rock or patio blocks.
Tools/Ground Rod Kit
Included with each new furnace are
tools that are invaluable for maintenance
and cleaning and a Ground Rod Kit for
electrically grounding the furnace. Use
the maintenance tool to clean the rebox
and to remove ash from the Reaction
Chamber. Use the cleaning tool to clean
the heat exchangers. e maintenance
tool and cleaning tool are also used for
cleaning the rebox and door frame. e
cleaning rod can be used to break up
heavy or solidied ash in the rebox. It
is also used to clean the heat exchangers.
e Refractory/Chimney Tee cleaning
tool is used to clean ash from the Reaction
Chamber and to clean the chimney tee.
Refer to the Maintenance section for more
information.
Refractory/Chimney Tee
Cleaning Tool
Maintenance Tool
Cleaning Rod
Ground Rod Kit
Cleaning Tool

5
CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Access to Ports on Outdoor Furnace
Ports are provided that allow mounting circulation pumps on the outdoor
furnace. Refer to the illustrations in this section for proper supply and return
line and pump installations for your model.
NOTE: The Installation Guide provides more information on pump selection. For even more
detailed information, see the Hydronic Component Selection Guide (p/n 2482), available
from your CentralBoiler dealer.
NOTE: At least one circulation pump must run continuously to ensure proper operation of
the outdoor furnace.
3 - Pump Parts List*
*Parts and accessories sold separately.
Pump size may vary. For illustration purposes only.
NOTE
The Ground Rod Kit (p/n 6593), included with the
outdoor furnace, must be installed with every furnace.
3/4" 3/4"1-1/4"
411
410
5871
409
534
118
296
198
409
5643
1-1/4"
PEX
1" Central PEX
5800019
5643
410
5643
5643
409
1330
1330
1330
1330
5926
5926
5926
5926
5800033
224
274
556
Qty p/n Description
1 5800033 0015e3 Pump
1556 Power Supply Cord, 32"
1411 90˚ Street Elbow, 1-1/4"
3 409 Close Nipple, 1-1/4"
4 5643 Brass Clamp, 1-1/4"
2 410 Ball Valve, 1-1/4"
1 5800019 Pump Flange Kit, 1-1/4"
1 5871 Swing Check Valve, 1-1/4"
1-1/4" Supply & Return
2556 Power Supply Cord, 32"
Qty p/n Description
2 5800033 0015e3 Pump
2224 Isolation Flange Kit, 3/4"
65926 Clamp Crimp Ring, 1"
6 1330 MPT to PEX, 3/4" x 1"
1" Central PEX
3/4" Supply
Qty p/n Description
25926 Clamp Crimp Ring, 1"
2 1330 MPT to PEX, 3/4" x 1"
3/4" Return
2534 Nipple, 3/4" x 7"
2274 90° Street Elbow, 3/4"
2118 Close Nipple, 3/4"
2198 Ball Valve, 3/4"
2296 Swing Check Valve, 3/4"
Classic Edge 760 Model – 3-Pump Conguration

6CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
*Parts and accessories sold separately.
Pump size may vary. For illustration purposes only.
NOTE
Grounding Rod Kit (p/n 6593) must
be installed with every furnace.
118
5800033
198
224 296
5000015
418
388
6593
1330
118
5926
1" Central
PEX
956
534
556
SUPPLY RETURN
Qty p/n Description
2 5800033 0015e3 Pump
4118 Close Nipple, 3/4"
2224 Isolation Flange Kits, 3/4"
2198 Ball Valve, 3/4"
2296 Swing Check Valve, 3/4"
2536 Nipple, 3/4" x 7"
4388 Hex Bushing, 1-1/4" x 3/4"
45926
Crimp Ring, 1"
Stainless Steel Clamp
2 - Pump Parts List*
2556 Power Supply Cord, 32"
41330 MPT to PEX, 3/4" x 1"
111157 Nipple, 1-1/4" x 3"
25000015 Nipple, 1-1/4" x 2-1/2"
25000016 90° Elbow, 1-1/4" FPT
1 6593 Grounding Rod Kit
1 409 Close Nipple, 1-1/4"
2 418 Tee, 1-1/4"
*Parts and accessories sold separately.
Pump size may vary.
For illustration purposes only.
NOTE
Grounding Rod Kit (p/n 6593) must
be installed with every furnace.
5800033
198
118
388
536
296
556
6593 1330
5926
1" Central
PEX
SUPPLY
224
Qty p/n Description
1 5800033 0015e3 Pump
2118 Close Nipple, 3/4"
1536 Brass Nipple, 3/4" x 7"
1198 Ball Valve, 3/4"
1224 Isolation Flange Kit, 3/4"
1 296 Swing Check Valve, 3/4"
2388 Hex Bushing, 1-1/4" x 3/4"
25926
Crimp Ring, 1"
Stainless Steel Clamp
1 - Pump Parts List*
1556 Power Supply Cord, 32"
21330 MPT to PEX, 3/4" x 1"
1 6593 Grounding Rod Kit
RETURN
*Pump Extension Kit (p/n 2500164) required.
Classic Edge 360/560 Models – 2-Pump Conguration*
Classic Edge 360/560 Models – 1-Pump Conguration

7
CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Ground Rod Kit
e outdoor furnace must be electrically bonded to ground in accordance with
the requirements of the authority having jurisdiction or, in absence of such
requirements, with the National Electrical Code, ANSI/NFPA 70 and/or the
Canadian Electrical Code Part 1, CSA C22.1 Electrical Code.
Install the Ground Rod Kit (p/n 6593) included with the outdoor furnace and
connect it to the outdoor furnace.
1. In the water line trench near the outdoor furnace, drive the ground rod
into the ground until the top of the ground rod is below the ground
surface.
2. Route the ground wire from the ground rod under the outdoor furnace
base and over to the frame of the outdoor furnace.
3. Secure the ground terminal with a cap screw (1/4" x 3/4"), star washer
and nut. Secure the ground wire to the terminal; then secure the ground
wire to the ground rod with the clamp. Tighten all hardware securely.
NOTE: A hole for the ground terminal has been pre-punched in the outdoor furnace base
near the pumps.
Furnace Installation - Connecting to Your Existing System
A common installation is to connect the outdoor furnace to an existing water
heater and then to an existing forced air system. A water-to-air heat exchanger
is mounted in the plenum or duct work of the existing furnace. Heated water
from the outdoor furnace either continuously ows through the water-to-air
heat exchanger or is diverted through a 3-way zone valve. When the thermostat
senses the need for heat, the fan on the existing furnace forces air through the
heat exchanger, transferring heat throughout the existing ductwork.
NOTE: There are numerous ways to connect to your heating system. Refer to the
CentralBoiler Outdoor Furnace Installation Guide for other installations.
Detailed Furnace Installation Variations
Visit CentralBoiler.com to access
a library of detailed illustrations
for connecting to a wide variety of
existing heating systems and for
other heating options.

8CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
H
C
M
R
Hot Supply
Water-to-Water
Heat Exchanger
Bypass Line
Thermostatic
Mixing Valve
This horizontal assembly
must not exceed a height
of 4 inches (10 cm) above top
of water heater.
Existing
Water
Heater
1"
Central
PEX®
Optional Bypass
Valve
Heat
Exchanger
Plenum
Existing
Forced Air
Furnace
For illustration purposes only,
water heater styles may vary.
NOTE
A pump must be installed in the hot
supply line between the outdoor furnace
and thermostatic valve. Outdoor furnace
water temperature setpoint should be
set at 185˚F (85˚C) minimum.
NOTE
Installer must comply with all
applicable codes and regulations.
NOTE
Any electrical installation should
be done by a qualified installer
in accordance with applicable
codes.
NOTE: A certified electrician must
do the electrical installation.
Typical Installation
Connecting to Water Heater and Forced Air Furnace
Hot Supply from Pump
on Outdoor Furnace
Return to Outdoor Furnace
Optional Thermostatic Valve
To Heating
System
From Heating
System
Hot Supply from Pump
on Outdoor Furnace
Return to
Outdoor Furnace
Remote
Thermal
Storage
Tank
For illustration purposes only;
system components may vary.
NOTE
Installer must comply with all
applicable codes and regulations.
Remote Thermal Storage Installation
Connecting to Remote Thermal Storage Tank

9
CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Chimney Recommendations
In higher populated areas, extend the chimney to a height above the roofs
of surrounding buildings. Use CentralBoiler Chimney Extensions when
extending the chimney. When only the standard eight feet (2.4 m) of chimney
are used, the sections must be secured at the connection joint with four (4)
screws to stabilize the extension.
Chimney Installation
NOTE: Instructions for installing chimney sections and the chimney brace assembly are
also provided with the furnace.
1. Remove the two slotted hex screws securing the Chimney Slide to the
Chimney Support.
2. Remove the six self-tapping screws from the slot in the Chimney Brace
Support. ese screws are used to assemble the chimney sections.
3. Remove the single slotted hex screw securing the Chimney Strap to the
Chimney Brace Support.
4. Install the rope seal at the bottom of the rst chimney section; then
assemble the chimney as shown.
5. Mount the Chimney Slide to the Chimney Support with two slotted hex
screws. Do not tighten completely to allow the Chimney Slide to move.
6. Level the chimney front to back; then position the Chimney Slide against
the chimney and completely tighten the two slotted hex screws.
7. Wrap the Chimney Strap around the chimney and secure with a slotted
hex screw.
8. Secure the base of the chimney with three self-tapping screws.
9. Secure the joint between the rst two chimney sections with the clamp.
Outdoor Wood Furnace
Best Burn Practices
1. Read and follow all operating
instructions supplied by the
manufacturer.
2. FUEL USED: Only those
listed fuels recommended by the
manufacturer of your unit. Never
use the following: trash, plastics,
gasoline, rubber, naphtha,
household garbage, material
treated with petroleum products
(particle board, railroad ties and
pressure treated wood), leaves,
paper products, and cardboard.
3. LOADING FUEL: For
a more ecient burn, pay
careful attention to loading
times and amounts. Follow
the manufacturer’s written
instructions for recommended
loading times and amounts.
4. STARTERS: Do not use lighter
uids, gasoline, or chemicals.
5. CHIMNEY
RECOMMENDATIONS:
In higher populated areas,
extend the chimney to a height
above the roofs of surrounding
buildings.
6. Always remember to comply
with all applicable state and local
codes.
Be considerate of neighbors when
operating your furnace. If you
use your furnace in the summer
months, be certain your chimney
exhaust is not adversely aecting
neighbors with open windows.

10 CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Chimney
Sections
Turn Clockwise to Lock
Chimney Section Installation
and Chimney Brace Assembly
Turn Clockwise
to Lock
Clamp
Clamp
No Rope
Seal Needed
Rope Seal
Use silicone to install the
rope seal in the chimney.
Illustration for reference only.
Refer to instructions provided with
furnace for more information.
Chimney Slide
Chimney Support
Chimney Strap
Rope Seal
Chimney Tee

11
CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Chimney
Guy-Wire
Band Kit
(p/n 778)
Fall Zone
If objects are placed in the fall zone of the chimney, a
Chimney Guy-Wire Band Kit (p/n 778) or additional bracing
is recommended.
Classic Edge 760/960 -
8" Chimney Locking
Band (p/n 10509)
Classic Edge 360/560 -
6" Chimney Locking
Band (p/n 6500011)
Chimney
Base
Bracket
(p/n 4519)
Classic Edge 760/960 -
8" Chimney Extension (p/n 10508)
Classic 360/560 -
6" Chimney Extension (p/n 6500004)
Additional bracing may be necessary in
certain areas such as those subject to severe
weather, winds, freezing rain, etc.
Inspect all bracing bi-annually for integrity.
•
•
NOTE
Five or More Sections
When five or more sections of
chimney are being used, a Chimney
Base Bracket Kit (p/n 4519 - 8" or
p/n 2500044 - 6") and a Chimney
Attachment Ring (p/n 774) are
recommended.
Chimney Attachment Ring (p/n 774)
Must be located directly below Chimney
Locking Band to reduce stress on the
joint.
Two 1" electrical
conduit sections
(not supplied)
Two 3/4"electrical
conduit sections
(not supplied)
Three or Four Sections
When three or four sections of
chimney are being used, aChimney
Base Bracket Kit (p/n 4519) is
recommended.
Chimney Reinforcement Recommendations
for Classic Edge HDX
If extensions are added to the standard eight feet (2.4m) of chimney, the chimney
should be reinforced appropriately. e illustration shows chimney support
recommendations when three or more sections are used. When adding sections
of chimney, make sure that there is nothing within the fall zone of the chimney
that could be damaged. If something is located within the fall zone and cannot be
removed, guy wires or braces may need to be installed to prevent a falling chimney
from causing damage.
NOTE: If more than three 4-foot (1.2-m) sections of chimney are used, a support (e.g., a pole, pipe
or other structural support) may be installed from the ground that can withstand wind. Other
reinforcement recommendations are shown.
NOTE: For chimney extensions or chimney replacement, use only genuine Central Boiler
chimney components. Parts are available from an authorized CentralBoiler dealer.
e installation of a spark arrestor is recommended, particularly where there are
dry conditions or where there is combustible material near the unit, unless the
installation of a spark arrestor is prohibited by local requirements.
NOTE: If the screen is left on the chimney cap, the spark arrestor should be inspected and
cleaned as needed.
Use common sense to avoid potential res, including exercising caution when
disposing of ashes, cleaning and refueling. Keep all highly combustible materials
(e.g., gasoline, propane, leaves, pine needles, etc.) away from an operating unit at
all times. Take special precautions in windy conditions.
NOTE: You may need to increase the chimney height if conditions occur that force exhaust to
low levels.

12 CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
WATER QUALITY AND MAINTENANCE
Test Supply Water
Test a sample of the supply water (makeup water) that will be used to ll the
outdoor furnace (softened water is recommended). Test strips for testing pH
are included in the water test kit which is provided with the outdoor furnace.
1. Collect a small sample of the water to be used to ll the outdoor furnace
in a clean container.
2. Dip a test strip from the test kit in the water sample for 1 second and
remove. Shake o excess liquid (very important to prevent water bleed
from one pad to the other). Compare the pH test pad to the color chart at
30 seconds.
3. If the pH level is between 6.5 and 8.0 and there are no other known water
quality problems, then the outdoor furnace may be lled with this water.
4. Water that has a pH level of less than 6.5 or greater than 8.0, or that
has other known water quality problems, should not be used to ll the
furnace. Instead, water should be supplied from a dierent source.
Adding Initial Water Treatment
CAUTION
Avoid damaging your furnace and voiding your warranty. Add water treatment
BEFORE adding water to the system.Water treatment in your outdoor furnace is just as
important as the oil in a car's engine.
MolyArmor 350 Corrosion Inhibitor (p/n 2900630) gives optimum protection
for the furnace water jacket and system parts when it is used to initially treat
the water and is maintained at a minimum of 350 ppm of moly and pH level
between 8.0 and 9.5. One unit of MolyArmor 350 is a 1-gallon (3.78-liter)
container.
MOLYARMOR 350 TREATMENT AMOUNTS
Classic Edge 760 2 gallons
Classic Edge 560 1 gallon
Classic Edge 360 1 gallon
1. Add the recommended amount of MolyArmor 350 to the outdoor
furnace.
NOTE: If the system has a larger than normal water capacity, more MolyArmor 350 should
be added at a recommended rate of 6.5 oz. (190 ml) per 10 gallons (37.8 liters) of system
water. One unit (1 gallon or 3.78 liters) of MolyArmor 350 will treat 200 gallons (757 liters)
of system water.
2. Fill the furnace and system using the instructions to ensure air is purged
from the system - refer to Installation Guide.
SEE HOW IT'S DONE
CentralBoiler.com > Support

13
CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Immediately Start the Pump(s) and Heat the System Water
to 185˚F (85˚C)
CAUTION
Be sure the outdoor furnace is lled with water before ring. Never re the outdoor
furnace when the water level is more than 1" (2.5 cm) below the FULL mark on the
sight gauge.
NOTE: The sight gauge valve should always be closed except when checking water level.
Water will automatically drain from the sight gauge tube. Remember that this type of
valve requires only 1/4 turn to open or close.
1. Start the pump(s). Refer to Initial Fire Up -Start of Heating Season to
start the outdoor furnace. Bring the water temperature up to operating
temperature (185˚F or 85˚C) for two hours with the system circulating;
then add water to the full mark. Continue to run the pump and circulate
the water for 24 hours.
NOTE: It is important to bring the water in the system up to operating temperature (i.e.,
185˚F or 85˚C) immediately after lling the system. This also applies any time water is
added to the system.
NOTE: If there are multiple circuits connected to the outdoor furnace, repeat the process
for each circuit.
CAUTION
The water in the system may be hot. Use caution and the appropriate personal
protective equipment (PPE) when checking for leaks.
2. Check the system for leaks. Inspect all ttings and hose ends for any
signs of leakage. Use several dry paper towels and wrap them around and
squeeze each tting, valve and pipe connection. e paper towels will
get wet even if there is a very small leak. Immediately repair any leaks to
eliminate the need for adding water. If a screw-type clamp has been used,
it may be possible to stop a very slow leak at a hose clamp by tightening
the clamp after the system has warmed up and the poly becomes more
pliable. It might also be necessary to install a second hose clamp with the
screw positioned on the opposite side.
NOTE: After a week of operating, use the procedure in step 2 to check the system for leaks
again.
NOTE: If water is added, it is important to bring the water in the system up to operating
temperature (i.e., 185˚F or 85˚C) immediately. Refer to the instructions provided in the
test kit for water testing procedures. If indicated by test results, add MolyArmor 350 as
required. Deterioration due to improper operation and/or maintenance is not covered by
warranty.

14 CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Test the Treated System Water
After circulating the water in the system for at least 24 hours, test the treated
system water for the recommended moly (at least 350 ppm) and pH level
(between 8.0 and 9.5).
CAUTION
The water in the sight gauge may be hot. Use caution when obtaining a sample.
1. To obtain a system water sample, bend the sight gauge tube away from the
outdoor furnace. Before collecting the sample, open the valve and drain
about a quart of water from the sight gauge tube; then carefully ll the
sample container without contaminating the sample. Be sure to properly
install the sight gauge tube and close the valve when nished. e
water in the sight gauge valve and tube will drain when the valve is closed.
2. Dip a test strip from the test kit in the water sample for 1 second and
remove. Shake o excess liquid (very important to prevent water bleed
from one pad to the other). Compare moly test pad to the color chart
within 10 seconds. e moly level must be 350 ppm or more.
3. Compare pH test pad to the color chart at 30 seconds. e pH of the
treated water should be between 8.0 and 9.5.
Maintenance Levels
Test the pH and moly levels after the rst three months and every six months
thereafter, and after adding water to furnace.
NOTE: If using antifreeze, test the pH and Moly levels once each month. If the bacterial
issues occur, the pH will decrease.
NOTE: It should not be necessary to add water to the outdoor furnace more frequently
than once every twelve months. If it is more frequent, either there is a leak in the system
or the outdoor furnace is boiling because of improper operation or maintenance (see
Troubleshooting Section in the Owner's Manual). Be sure to locate and repair the problem
immediately. Frequently adding water can cause deterioration in the water jacket. Each
time water is added, refer to the instructions provided in the test kit for water testing
procedures. If indicated by test results, add MolyArmor 350 as required. Deterioration due
to improper operation and/or maintenance is not covered by warranty.
Send in Initial Water Sample
Your owner's packet contains a Water Sample Kit for submitting an initial
water test and an informational sheet entitled Submitting Water Samples for
Your Titanium Series Outdoor Furnace. Follow the instructions to collect and
submit your initial water sample. Additional Water Samples Kits are available
from your CentralBoiler dealer.
NOTE: Your water sample will be tested and must indicate acceptable levels of water
treatment to qualify for the 25 year warranty.

15
CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Initial Water Sample
You are required to submit an initial water sample within 30 days of purchase
of your outdoor furnace.
Deferred Installation
If your outdoor furnace is not being installed within 30 days of purchase, you
must email [e-mail] with your name and your furnace serial
number. When the furnace installation is complete, send the water sample
within 10 days of the initial ll.
Check Status of Water Sample
If you have provided an email address, you will receive an email with the results
of your water test.
If you did not provide an email address, you will be notied by mail ONLY
if your water sample test is NOT ACCEPTABLE. If your water sample test is
acceptable, you will NOT be notied with a mailed letter. You can however
check the status of your water test online.
Check the status of your water sample at:
CentralBoiler.com/w25
You will need your serial number and postal code. Please allow 2-3 weeks for
results to be available. For a deferred installation, your status will be available
approximately 10 days after you email the deferred installation message.
Annual Water Sample
You are required to submit a water sample yearly prior to the anniversary date
of your initial installation. Record the anniversary date below:
_________________________
DATE OF INSTALLATION
Water Samples
Maintaining the corrosion inhibitor at a proper level is imperative to
preventing corrosion failures. To qualify for the 25 year warranty, you must
follow the instructions in the Owner's Manual and the Installation and Initial
Water Treatment Guide concerning initial water treatment and maintenance.
When the outdoor furnace is initially put into service, and once a year after
that, you are required to submit a water sample to conrm proper maintenance
and water treatment. No warranty claim can be approved unless the outdoor
furnace registration and the acceptable levels of water treatment are on le at
Central Boiler.
NOTE: It is your responsibility as owner to ensure that your water sample information is
accurate and that you submit your samples on a timely basis as required by the warranty
for your stainless steel outdoor furnace. Failure to do so will result in a one year warranty.

16 CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
SYSTEM MAINTENANCE
An important part of outdoor furnace maintenance is controlling the quality of
the water in the outdoor furnace.
Water Test Kits and Test Results
DATE pH LEVEL MOLY LEVEL
Record the results of pH and Moly level tests in the table above.
If additional space is needed, record on a separate sheet of paper.
It is very important to keep record of water test results (including the date, pH
and Moly level). e pH and Moly test strips and indicator have a shelf life
of approximately two years that can aect their accuracy. Test kits should be
stored in a dry area at room temperature to obtain maximum accuracy over a
longer period of time.
Biological contamination can occur if the furnace is not heated up to 185˚F
immediately after lling it with inhibitor and water as directed.
NOTE: ANY time water is added to the system, it is extremely important to bring the water
temperature up to operating temperature (185˚F) as soon as possible, even if it is during
the o-season. Failure to bring the water in the system up to operating temperature
immediately after lling the system can allow bacteria present in the water to multiply
and may increase the potential for corrosion in the sytem.
If the test indicates a signicantly lower-than-recommended pH level (below
8.0), add MolyArmor to increase the pH level.
POST HEATING SEASON MAINTENANCE
e water should be left in the outdoor furnace if the outdoor furnace is not
being used for an extended period of time.
1. Refer to the Preventive Maintenance Schedule for a list of operations to
perform.
2. Shut o the power supply to the outdoor furnace.
3. Place a cover over the chimney to keep rain from entering the outdoor
furnace. Clean and oil the chimney ue to the rebox.