Century Heating CW2500 User manual

45399A
Printed in Canada 07-07-2014
OWNER`S MANUAL
CW2500 Insert
*Faceplate kit must be ordered separately.
US ENVIRONMENTAL PROTECTION
AGENCY PHASE II CERTIFIED
WOOD INSERTS
Verified and tested following
ULC S628 and UL 1482 Standards
by:
STOVE BUILDER INTERNATIONAL INC.
250, de Copenhague, Saint-Augustin-de-Desmaures (Quebec), Canada G3A 2H3
Tel: [phone] Fax: [phone]
www.century-heating.com
READ AND KEEP THIS MANUAL FOR REFERENCE
Thismanualisavailableforfreedownloadonthemanufacturer’swebsite.Itisacopyrighted
document.Re‐saleisstrictlyprohibited.Themanufacturermayupdatethismanualfromtimetotime
andcannotberesponsibleforproblems,injuries,ordamagesarisingoutoftheuseofinformation
containedinanymanualobtainedfromunauthorizedsources.

2
INTRODUCTION
SBI INC., one of the most important wood stove and fireplace manufacturers in Canada,
congratulates you on your purchase and wishes to help you get maximum satisfaction from your
wood insert. In the pages that follow, we will give you advice on wood heating and controlled
combustion as well as technical specifications regarding installation, operation and maintenance of
the model you have chosen.
The instructions pertaining to the installation of your wood insert comply with ULC-S628 and UL-
1482 standards.
We recommend that our woodburning hearth products be installed and serviced by professionals
who are certified in the United States by NFI (National Fireplace Institute®) or in Canada by WETT
(Wood Energy Technical Training) or in Quebec by APC (Association des Professionnels du
Chauffage).
Read this entire manual before you install and use your new insert. If this insert is not
properly installed, a house fire may result. To reduce the risk of fire, follow the installation
instructions. Failure to follow instructions may result in property damage, bodily injury, or
even death.
Consult your municipal building department or fire officials about restrictions and
installations requirements in your area and the need to obtain a permit.
Keep and save this instructions manual for future references.
CAUTIONS:
HOTWHILEINOPERATION.KEEPCHILDREN,CLOTHINGANDFURNITUREAWAY.CONTACT MAY CAUSE SKIN
BURNS.
THE INFORMATION GIVEN ON THE CERTIFICATION LABEL AFFIXED TO THE APPLIANCE ALWAYS OVERRIDES
THEINFORMATIONPUBLISHED,INANYOTHERMEDIA (OWNER’SMANUAL,CATALOGUES,FLYERS,MAGAZINES
AND/OR WEB SITES).
DO NOT USE CHEMICALS OR FLUIDS TO START THE FIRE.
DO NOT LEAVE THE STOVE UNATTENDED WHEN THE DOOR IS SLIGHTLY OPENED.
DO NOT BURN WASTES,FLAMMABLE FLUID SUCH AS GASOLINE,NAPHTHA OR MOTOR OIL.
DO NOT CONNECT TO ANY AIR DISTRIBUTION DUCT OR SYSTEM.
ALWAYS CLOSE THE DOOR AFTER THE IGNITION.
REGISTER YOUR WARRANTY ONLINE
To receive full warranty coverage, you will need to show evidence of the date you
purchased your stove. Keep your sales invoice. We also recommend that you
register your warranty online at
http://www.century-heating.com/en/service-support/warranty-registration
Registering your warranty online will help us track rapidly the information we need
on your insert.

3
TABLE OF CONTENTS
INTRODUCTION ..........................................................................................................................................2
Section 1.0 Pre-Installation Requirements..................................................................................................5
1.1 Masonry & Zero Clearance Requirements...................................................................................... 5
1.2 Venting Requirements........................................................................................................................ 6
Section 2.0 Installation..................................................................................................................................7
2.1 Safety information.............................................................................................................................. 7
2.2 Installation instructions ..................................................................................................................... 8
2.3 Compliance of the masonry fireplace ............................................................................................... 8
2.4 The masonry fireplace's draft control system.................................................................................. 9
2.5 Compliance of a combustible top shelf............................................................................................. 9
2.6 Positioning the unit........................................................................................................................... 10
2.7 Minimum masonry opening, clearances to combustibles, and floor protector........................... 14
2.8 Connector installation...................................................................................................................... 16
2.8.1 Chimney liner installation............................................................................................................. 17
2.9 Faceplate Assembly Instructions.................................................................................................... 18
Section 3.0 Operation ..................................................................................................................................21
3.1 Safety Information............................................................................................................................ 21
3.2 Fuel..................................................................................................................................................... 22
3.2.1 Simple Wood Moisture Test ......................................................................................................... 23
3.3 Notes About First Firing.................................................................................................................. 23
3.4 Lighting A Fire.................................................................................................................................. 24
3.5 Maintaining The Fire ....................................................................................................................... 26
3.6 Fan Operation................................................................................................................................... 26
Section 4.0 Maintenance..............................................................................................................................27
4.1 Care And Cleaning........................................................................................................................... 27
4.1.1 Glass Cleaning and maintenance ................................................................................................. 27
4.2 Ash Removal...................................................................................................................................... 28
4.3 Chimney Cleaning ............................................................................................................................ 28
4.4 Baffle Installation for CW2500 ....................................................................................................... 29
4.5 Secondary Air Tube Replacement .................................................................................................. 31
4.6 Fan Maintenance & Care................................................................................................................. 32
4.7 Removal instructions........................................................................................................................ 32
Section 5.0 Specifications............................................................................................................................33
5.1 CW2500 Insert................................................................................................................................ 33
CENTURY HEATING LIMITED WARRANTY....................................................................................34

4
CW2500 Dimensions

5
Section 1.0 Pre-Installation Requirements
1.1 Masonry & Zero Clearance Requirements
The masonry fireplace must meet the minimum code requirements, or NFPA 211 or the equivalent for a
safe installation. Contact your local Building Inspector for requirements in your area. An inspection of
the fireplace should include the following:
1. CONDITION OF THE FIREPLACE AND CHIMNEY: Examine the masonry fireplace and
chimney prior to installation to determine that they are free from cracks, loose mortar, creosote
deposits, blockage, or other signs of deterioration. If evidence of deterioration is noted, the fireplace or
chimney should be upgraded prior to installation.
2. INSTALLATION INTO AN EXISTING FACTORY-BUILT ZERO-CLEARANCE
FIREPLACE: It is possible to install a wood insert into an existing factory-built zero-clearance
fireplace. However, there currently exists no UL or ULC standard specific to that type of installation.
The first thing that must be verified is that the factory-built zero clearance fireplace is listed (it must be
certified by a competent certification body such as Omni or Warnock Hersey). It must be suitable for
use with solid fuel and nothing in the owner’s manual must specifically prohibit the installation of a
fireplace insert. When in doubt, check with the fireplace manufacturer. The installation of the zero-
clearance fireplace MUST be thoroughly inspected by a professional in order to ensure that it still
meets the manufacturer’s specs and code conformity. The chimney must be of at least 1" (25 mm)
larger in diameter to accommodate a required continuous stainless steel liner running from the flue
collar to the top of the chimney termination.
Never remove parts that serve to insulate the zero-clearance fireplace from combustible material. Only
readily detachable parts that are easily replaced, such as damper parts, screens, and doors, are to be
removed from the fireplace. These parts must be stored nearby and available for retrofit if the insert is
ever removed. Removal of any parts which render the fireplace unfit for use with solid fuel requires
the fireplace to be permanently labelled by the installer as being no longer suitable for solid fuel until
the removed parts are replaced and the fireplace is restored to its original certified condition.
Furthermore, any air vents, grilles, or louvers that serve to create an air circulation pattern around and
outside the zero-clearance fireplace shall never be removed.
3. CHIMNEY CAPS: Mesh type chimney caps must have provision for regular cleaning, or the mesh
should be removed to eliminate the potential of plugging.
4. LINER:The chimney must have an acceptable masonry liner suitable for solid fuel, otherwise a
continuous stainless steel liner must be installed.
5. ADJACENT COMBUSTIBLES: The fireplace should be inspected to make sure that there is
adequate clearance to combustibles, both exposed combustibles to the top, side, and front as well as
concealed combustibles, in the chimney and mantel area. Your local inspector should have
information on whether older fireplaces are of adequate construction.
6. OPENING SIZE: Refer to “Suitable Fireplace Dimensions” (Sec. 2.2) for suitable size fireplace
openings.
NOTE: AMETAL TAGISPROVIDED ANDISTOBEFASTENED TOTHE BACKWALL OF
THE FIREPLACE IF THE FIREPLACE HAS BEEN MODIFIED TO ACCOMMODATE THE
INSERT.

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1.2 Venting Requirements
The flue is a critical component to a satisfactory installation. Your insert will attain its best performance if
installed with a flue that generates its own draft. The minimum venting requirement will be the installation of
a flue connector from the insert into the first tile of the chimney (see Figure 2.3). If you are using a masonry
chimney, it is important that it be built in compliance with the specifications of the National Building Code or
other applicable standard having jurisdiction. It must be lined with fire clay bricks, metal or clay tiles sealed
together with fire cement (round flues are the most efficient). Ideally, the interior diameter of the masonry
chimney should be identical to the insert smoke exhaust. You may also run a stainless steel liner inside the
masonry chimney. A continuous 6" (152mm) stainless steel liner from the top of the chimney to the insert’s
smoke exhaust (see Figure 2.2) is the optimum system and will provide the best performance, as well as
compensate for poor draft situations caused by large cross-sectional chimneys. The insert will not work
without a positive seal in the chimney.
Chimneys constructed outside of the home, on an exterior wall, should be avoided if possible, especially in
colder climates. Outside chimneys may not draw as well and may downdraft due to the difficulty in heating
them up to operating temperature. Cooler chimneys will result in increased creosoting, less draft, and poorer
performance. Draft is proportional to overall chimney height as well as to stack temperature. Draft can be
increased by increasing chimney height, and by reducing heat loss from the chimney through an insulated
liner.
Ensure that all joints in the flue systems are tightly sealed, since any leaks will result in reduced performance
as well as a possible safety hazard. Using a fire screen at the extremity of the chimney requires regular
inspection in order to insure that it is not obstructed thus blocking the draught, and it should be cleaned when
necessary.
Do not connect this unit to a chimney flue serving another appliance.
This heating unit must serve as a supplementary heat source. An alternate heat source should be available in
the home if needed. The manufacturer cannot be responsible for additional heating costs associated with the
use of an alternative heat source.
It is recommended that the user buys this product from a retailer who can provide installation and
maintenance advices.

7
Section 2.0 Installation
2.1 Safety information
NOTE: THIS APPLIANCE IS NOT RECOMMENDED FOR USE IN A HOME IF AN
OCCUPANT HAS ANY RESPIRATORY OR ANY OTHER RELATED PROBLEMS.
1. It is important to follow the installation and operation instructions. An improperlyinstalled oroperated
insert could result in a safety hazard or fire, or damage to the unit, which would not be covered by the
warranty. Contact local building or fire officials about restrictions and installation requirements in
your area. You should be familiar with the installation and be sure that the work is done in accordance
with this manual.
WARNING: DO NOT INSTALL THIS INSERT IN A SLEEPING ROOM.
2. Where lesser clearances are desired, consult your local authority as regulations may vary regarding the
use of clearance reducing devices. Listed wall and floor shields are available to reduce clearances, and
most building codes provide information on materials which may be used to reduce clearances.
1. Maintain at least the minimum clearances to combustible material as specified in this manual.
Clearances are measured to the nearest part of the insert (i.e. top edge on the side). Clearances to any
combustibles, when measured directly out from the front, must be a minimum of 48" (1219mm).
4. Maintain at least the minimum floor protection for combustible floor materials as specified in this
manual. Floor protection to the front is to be measured from the fuel loading door opening.
5. Osburn recommends that you install a listed smoke detector or alarm in your home. Normal operation
of the insert will have no effect on the detector or alarm.
6. The insert is to be connected only to a lined masonry chimney and masonry fireplace conforming to
building codes for use with solid fuel. Do not remove bricks or mortar from the existing fireplace
when installing the insert.
7. Minimum chimney size is 6" (152mm) diameter. Maintain a 15' (4.5m) minimum overall height
measured from the base of the appliance. Chimneys should be inspected to check for deterioration and
to determine if they meet the minimum requirements, and be upgraded if necessary. The chimney must
extend at least 3' (914mm) above the roof and at least 2' (610mm) above the highest point within an
area of 10' (3m) of the chimney.
8. Do not use makeshift compromises during installation, as they could create a safety hazard and a fire
could result.
9. DO NOT CONNECT THIS APPLIANCE TO THE CHIMNEY OR FLUE SERVING ANOTHER
APPLIANCE.

8
2.2 Installation instructions
Inspectthe masonryfireplace according tothe safetyinformationand fireplacerequirements and haveit cleaned
and/or upgraded as necessary.
2.3 Compliance of the masonry fireplace
Where the masonry fireplace opening is 6 ft2(0.56 m2) or larger, the hearth extension shall extend at least 20''
(508 mm) in front of the facing material and at least 12'' (305 mm) beyond each side of the fireplace opening.
Where the masonry fireplace opening is less than 6 ft2(0.56 m2), the hearth extension shall extend at least 16''
(406 mm) in front of the facing material and at least 8'' (203 mm) beyond each side of the fireplace opening.
Note that if you must modify the hearth extension to comply with these measures, depending on the size of the
masonryfireplace opening,the hearth extensionmust have aminimumof 4''(102 mm) thick(seeFigure 2.6aand
2.6b.)

9
2.4 The masonry fireplace's draft control system
If the fireplace's draft control system is to remain in the masonry fireplace, it must be locked open for access of
the chimney liner or removed entirely. If youremove draft control systemfromthemasonryhearth, you willneed
to install the metal plate (27009), supplied with the owner’s manual kit, indicating that the masonry hearth has
been modified. It must be secured inside the masonry hearth, in a visible place and easy to locate.
2.5 Compliance of a combustible top shelf
To ensure compliance of an existing top shelf or to install any combustible shelf, refer to table below and
Figure 2.5 for a safe installation or to perform changes if necessary. For example, a shelf with a 6’’ depth (152
mm) must be installed at least 17" (432 mm) above the top of the insert (see Figure 2.5). Different shelf
dimensions are listed in the following table in order to facilitate installation. However, no combustible shelf
can be installed at less than 17" (432 mm) above the top of the insert. If the depth of the shelf is not listed in
the table, add 11" (279 mm) to the depth ofyour shelf to obtain the safe positioning of your shelf. For example,
for a 9" (229 mm) shelf, the safe positioning would be 20" (508 mm) above the top of the insert (11" (279 mm)
+ 9" (229 mm)).
SHELF POSITIONING
MAXIMUM SHELF
DIMENSION (X) SHELF POSITION (I)
6" / 152 mm 17" / 432 mm
8" / 203 mm 19" / 483 mm
10" / 254 mm 21" / 533 mm
12" / 305mm 23" / 584 mm

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2.6 Positioning the unit
In addition to ensuring compliance of the masonry fireplace hearth extension (seeComplianceof themasonry
fireplace in Section 2.3), it is necessary to have a floor protection made of non-combustible materials that
meets the measurements specified in table FLOOR PROTECTION (see Section 2.7). To determine the need
to add a floor protection (D) beyond the hearth extension, you must do the following calculation using the data
in Table Data for floor protection calculation of this section: D = B - (A - C). If the value (D) is negative or
zero, you do not have to add more floor protection in front of the unit, because the masonry fireplace hearth
extension is long enough. If the value (D) is positive, you will need a floor protection in front of the hearth
extension at least equivalent to the result (D).
Here is a sample calculation to determine the need to add a non-combustible materials floor protection. For
someone living in the USA whose fireplace opening is less than 6 ft2and which the insert would protrude 3"
(76 mm) into the room (C) the calculation would be:
Value D = B - (A - C)
Value D = 16" - (16" - 3")
Value D = 16" - 13"
Value D = 3"
This person should install a non-combustible floor protection of at least 3" (76 mm) in front of the fireplace
hearth extension.

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If a non-combustible material floor protection needs to be added in front and level with the hearth extension
masonry fireplace (see Figure 2.6a), an R factor equal to or greater than 1.00 is required. If the extension of the
masonry hearth is raised at least 4" from the floor protection (see Figure 2.6b), a non-combustible material
without an R factor is sufficient.
Figure 2.6a
Figure 2.6b

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The use of an R value is convenient when more than one material is going to be used in the hearth extension to
cover the combustible surface. This is because R values are additive, whereas K values are not. To find the
corresponding R factor to use for some selected materials, please see Table Thermal characteristics of
common floor protection materials in this section.
There are two ways to calculate the R factor of the floor protection. First, by adding the R-values of materials
used, or by the conversion if the K factor and thickness of the floor protection are given.
To calculate the total R factor from R factors ofthe materials used, simply add the R-values of materials. If the
result is equal to or greater than the R-value requirements, the combination is acceptable. To know the R-
values of some selected materials, see table Thermal characteristics of common floor protection materials.
Example:
Required floor protection R of 1.00. Proposed materials: four inches of brick and one inch of Durock®
board
Four inches of brick (R = 4 x 0,2 = 0,8) plus 1 inch of Durock®(R = 1 x 0.52 = 0.52).
0.8 + 0.52 = 1.32.
This R value is larger than the required 1.00 and is therefore acceptable
In the case of a known Kand thickness of alternative materials to be used in combination, convert all Kvalues
to R by dividing the thickness of each material by its Kvalue. Add the Rvalues of your proposed materials as
shown in the previous example.
Example:
K value = 0.75
Thickness = 1
R value = Thickness/K = 1/0.75 = 1.33

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The more extended the insert, the greater the heat transfer to the room. You may install the insert
within the minimum and maximum extension listed in the table below (value (C)) or any position in
between. The position chosen will depend on your own preference for most installations, your current
configuration, the compliance with the preceding installation instructions and compliance with the
buildingcoderequirements. Todetermine the minimum and maximum protrusion of the insert,referto
table Data for floor protection calculation.
Data for floor protection calculation
MAXIMUM
EXTENDED A B
(Note 1) C E
Smaller
than 6 ft2* Bigger or
= to 6 ft2*
INCHES 16" 20"
CAN: 18"
USA: 16" 8" 5 3/4"
MILLIMETRES 406 mm 508 mm
CAN: 457
mm
USA: 406
mm
203 mm 146 mm
MINIMUM
EXTENDED A B
(Note 1) C E
Smaller
than 6 ft2* Bigger or
= to 6 ft2*
INCHES 16" 20"
CAN: 18"
USA: 16" 2 7/8" 10 7/8"
MILLIMETRES 406 mm 508 mm
CAN: 457
mm
USA: 406
mm
73 mm 276 mm
*Refers to masonry fireplace opening.

14
Thermal characteristics of common floor protection materials*
MATERIAL CONDUCTIVITY
(k) PER INCH RESISTANCE (R) PER INCH THICKNESS
Micore®160 0.39 2.54
Micore®300 0.49 2.06
Durock®1.92 0.52
Hardibacker®1.95 0.51
Hardibacker®500 2.3 0.44
Wonderboard®3.23 0.31
Cement mortar 5.00 0.2
Common brick 5.00 0.2
Face brick 9.00 0.11
Marble 14.3 – 20.00 0.07 – 0.05
Ceramic tile 12.5 0.008
Concrete 1.050 0.950
Mineral wool insulation 0.320 3.120
Limestone 6.5 0.153
Ceramic board (Fibremax) 0.450 2.2
Horizontal still air** (1/8") 0.135 0,920**
* Information as reported by manufacturers and other resources
**For a1/8" thickness.You cannot «stack» horizontal still air toaccumulate R-values; you mustseparateeachlaterofhorizontalstillair
with another noncombustible material.
2.7 Minimum masonry opening, clearances to combustibles, and floor protector

15
CLEARANCES
F 12’’ (305 mm)
G 10’’ (254 mm)
H 10’’ (254 mm)
I 17’’ (432 mm)
MINIMUM MASONRY
OPENING
J 22 5/8” (575 mm)
K 28 3/4” (730 mm)
L 8” (203 mm)
FLOOR PROTECTOR
CANADA USA
B 18’’ (457 mm) – Note1 16’’ (406 mm) – Note 1
M 8’’ (203 mm) N/A (Canada only)
N N/A (USA only) 8’’ (203 mm)
* For a 6" (152 mm) shelf. See Table SHELF POSITIONING (Section 2.5) for other shelf dimensions.
Note 1: From door opening. The depth of a non-combustible shelf in from of the insert is included in the
calculation of the floor protector’s dimensions.
IMPORTANT: The masonry hearth should be at least 4 inches (102 mm) higher than the combustible
floor in front of it. If the hearth elevation is lower than 4 inches, the non-combustible floor protector in
front of the insert should have an R value equal or greater than 1.00.

16
2.8 Connector installation
A masonry flue connector may provideacceptable performance (Figure2.8a); however,we recommend the use
of a chimney liner (rigid or flexible) to ensure satisfactory performance (Figure 2.8b). To ensure an optimal
draft, we also strongly recommend adding a minimum of 18” rigid liner between the roof flashing and the rain
cap. Slip connectors for continuous liners should also be installed. Use Listed Chimney Liners – UL1777,
CAN/ULC-S635.
Figure 2.8a* Figure 2.8b*
*Generic illustrations. The model of your insert can differ from the one shown above.
ATTENTION INSTALLER: When positioning the unit in a fireplace opening prior to the flue
installation, install the insert into the opening until the top lip of air jacket is flush with fireplace
facing.
If lag-bolts and anchors are to be used to secure the insert, the whole locations should be marked with
the unit in place. Remove the insert and locate the anchors.

17
2.8.1 Chimney liner installation
To the chimney liner to the insert’s flue outlet, you have two options:
A) Install the chimney liner starter adapter, provided with the chimney liner. Follow the chimney liner
starter adapter manufacturer's instructions.
B) You can get from your dealer a liner fixation system (AC02006), sold separately. Follow the
installation instructions provided with the liner fixation system.
Generic illustrations. The model of your insert can differ from the one shown above.

18
2.9 Faceplate Assembly Instructions (Faceplate kit must be ordered separately).
Note: The illustrations may vary from one model to another, but the method of assembly remains the
same.
Remove the faceplate panels from its box and the faceplate extension secured between the firebox and the
convection air jacket.
Place the faceplate panels with the finished side down on a flat, soft, non-abrasive surface and follow the
installation instructions below;
Hardware bag content:
8 - #10-24" x 1/2" bolts 2 - Corner bracket and screws
8 - Trim retainer 8 - #10-24" hex nuts
Line up the holes of the upper faceplate panel (A)
with the holes of the side panels (B) and (C).
Secure those together using four (4) bolts (D) and
nuts (E) provided (see DETAIL A).
Partially thread the screws (H) on the trim's
corner bracket (G) then superimpose the corner
brackets (F) and (G) as shown in the image on the
left.

19
Insert the superimposed brackets (F) and (G) with
the screws (H) in the groove of each decorative
trim (I), (J) and (K) (see DETAIL B). Align the
corners of the angled side of each trim, and then
tighten the screws (H) to secure the trims.
Align the trim assembly with the left and right
edge of the faceplate and slowly slide it down
over the faceplate.
Secure the trim to the faceplate by squeezing the
eight trim retainers (L) between the inner edge of
the trim and the front of the faceplate. As in the
image on the left.

20
Once the faceplate is assembled, align the
notches, located at the top of each side of the
faceplate opening, with the top of the insert and
slide the assembly toward the front of the insert
(see DETAIL A).
Center the insert into the fireplace opening.
Adjust its height using the leveling bolts on each
side of the convection air jacket box until the
faceplate is properly seated on the floor of the
hearth extension.
Then install one faceplate retainer spring on each
side of the faceplate and attach the other end of
the spring to the holes in the slanted part on the
left and right sides of the of the convection air
jacket as shown in DETAIL B.
Push the faceplate against the fireplace’s front.