Vermont Casting EWF36A User Manual
EWF36A
Fireplace
Homeowner’s
Installation and
Operating Manual
SAFETY NOTICE: IF THIS APPLIANCE IS NOT PROPERLY INSTALLED, OPERATED AND MAINTAINED, 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. CONTACT LOCAL BUILDING OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION
INSPECTION REQUIREMENTS IN YOUR AREA.
Do Not Discard This Manual: Retain for Future Use
20005167 7/06 Rev. 11
Vermont Castings EWF36A
Introduction
Thank you for purchasing a Vermont Castings, EWF36A fireplace. An efficient fireplace carefully engineered to bring
you the latest in wood combustion principles and modern foundry technology.
You can count on years of comfortable heating and pleasurable fire viewing if you treat it properly and operate the
EWF36A according to the directions in this owner’s guide.
The EWF36A is listed by Underwriter’s Laboratories, and is in compliance with the standards set forth by the Federal
Environmental Protection Agency, 40 CFR Part 60.532(b), as stated on the permanent label attached to each appliance.
This manual describes the installation and operation of the EWF36A wood heater. This heater meets the US Environ
mental Protection Agency’s emission limits for wood heaters sold after July 1, 1990. Under specific test conditions this
heater has been shown to deliver heat at a rate ranging from 11,000 to 68,600 Btu’s/hr.
For more complete details on the EWF36A performance and specifications, please refer to Page 3.
The EWF36A is designed, tested and listed for burning wood. Do not burn other fuels.
We recommend that you hire a professional installer certified by Wood Energy Technical Training (WETT) to install
your EWF36A, or to advise you on the installation should you attempt to install it yourself.
Please read the appropriate sections of this manual before you install and use your EWF36A. For information on operation and maintenance of the EWF36A, refer to Pages 17 and 20.
The EWF fireplace can use 100% outside air with the AKMST Outside Air Kits installed.
Failure to follow these instructions may result in property damage, bodily injury or even death.
Save These Instructions for Future Reference
-
Table of Contents
Introduction ................................................................ 2
Safety Information ..................................................... 3
Specifications ............................................................
Planning Information ................................................. 7
Installation ................................................................. 8
Operation ................................................................. 18
Maintenance ............................................................ 22
Replacement Parts .................................................. 27
Optional Accessories ...............................................
Warranty ..................................................................
29
30
Proposition 65 Warning: Fuels used in gas, woodburning or oil fired appliances, and the products of
combustion of such fuels, contain chemicals known
to the State of California to cause cancer, birth de-
4
fects and other reproductive harm.
California Health & Safety Code Sec. 25249.6
2
20005167
Vermont Castings EWF36A
Safety Information
Please Read This Manual Before Installing and Using Fireplace
IMPORTANT:
Read all instructions and warnings carefully before starting installation. Failure to
follow these instructions may result in a possible fire hazard and will void the warranty.
Description
The EWF36A fireplace is a solid fuel, woodburning,
heat circulating fireplace.
Precautions
CFM Corporation fireplaces and component parts have
been highly tested and will operate safely when installed in accordance with instructions provided in this
manual. Carefully read and understand all instructions
before beginning installation.
If you notice any damage to fireplace or component
parts, immediately report damage to your CFM Corporation dealer.
Only use CFM Corporation components or the warranty
will be voided and a fire hazard may be created.
CFM Corporation warranty will be voided by and CFM
Corporation disclaims any responsibility for the following actions:
• Installation of any damaged fireplace or chim-
ney component;
• Modification of fireplace, chimney assembly
or any component parts thereof; (except for
chase flashings as detailed in CFM Corporation
Chimney Top installation instructions).
Do not obstruct or modify air inlets/outlets in any
manner.
Do not install combustible materials on any of the
black fireplace surround.
Burn only solid wood fuel.
The EWF36A is intended for operation with the
doors closed or fully open only with the optional
spark screen in place.
Do not install a solid fuel burning insert or other
products not specified for use with this fireplace.
This fireplace is not approved for installation in
mobile homes.
NOTE: Hairline cracks in hearth brick and ash lips
are not a safety issue and do not need to be replaced.
Drafts
The fireplace should not be located in areas that create
drafts (ie: frequently opened doors and central heating
air inlets/outlets) that hamper the normal flow of air into
the fire.
• Installation other than as instructed by CFM
Corporation; or
• Installation and/or use of any component part
not manufactured or approved by CFM Corporation in combination or assembly with a CFM
Corporation fireplace system, notwithstanding any independent testing laboratory or
other third party approval of such component
parts or accessory.
Any such action may possibly cause a fire hazard.
Consult local building codes to ensure that you are in
compliance before installing the fireplace.
This fireplace and chimney system must be vented to
the out-of-doors.
Standard for Factory Built Fireplaces
Unit: FA3ECB
EWF36A
Listed
UL / ULc127
20005167
3
Vermont Castings EWF36A
" (25mm)
"
"
(16mm)
Recessed
Nailing
Flange
13" Dia.
(343mm)
Rough Opening Width 43"
Rough
Opening
Height
Rough
Opening
Depth
67" (1708mm)
67" (1708mm)
47" (1207mm)
5/8" (16mm)
95" (2413mm)
27"
(686mm)
26"
(660mm)
8"
(216mm)
(1092mm)
41" (1041mm)
47"
(1207mm)
51
"
(1308mm)
36" (914mm)
41" (1041mm)
14"
(362mm)
14"
(362mm)
12"
(327mm)
4"
(124mm)
12
"
(318mm)
Electrical
Access
Outside
Air
12"
(327mm)
EWF36A
Specifications
Range of heat output* ............... 11,300 - 75,500 Btu/hr
Maximum heat output** ..... in excess of 100,000 Btu/hr
EPA emissions rating (g/h, catalytic) .......................2.4*
Area heated*** ............... Up to 2500 sq. ft. (558 sq. m)
Size of wood splits .....................18” - 24” (450-610mm)
Fuel Capacity ........................................... 40lbs. (18kg)
Loading ..................................................................Front
Flue size ..................................................... 8” (200mm)
Fireplace weight ................................................ 741lbs.
Primary Air Control ............................................ Manual
Glass panel ......................... High-temperature ceramic
Flue exit position ..................................................... Top
Blower rating ...............................160cfm. (115V, 60Hz)
EWF36A Woodburning Fireplace
*Under specific test conditions used during EPA emis
-
sions standard testing.
**This value can vary depending on how the unit is
operated, and the type and moisture content of the fuel
used. Figure shown is based on maximum fuel consumption obtained under laboratory conditions and on
average efficiencies.
***These values are based on operation in buildingcode conforming homes under typical winter climate
conditions. If your home is of nonstandard construction
(e.g. unusually well insulated, not insulated, built under
ground, etc.) or if you live in a more severe or more
temperate climate, these figures may not apply. Since
so many variables affect performance, consult your Vermont Castings’ Authorized Dealer to determine realistic
expectations for your home.
Fig. 1 EWF36A specifications and framing.
4
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Chase Installation
Insulation methods shown are
optional for cold climate, not a
requirement for unit operation.
Batt Insulation
(cut out around firestop)
Firestop
Ceiling Level
Vermont Castings EWF36A
Termination Cap
Storm Collar
Pan Flashing
Draftstop
Batt Insulation MUST be
used in the
Chase.
Outside Air
Cover Plate
Fig. 2 Fireplace and chase parts identification.
Standoff
Brick Ledge
Andiron
Metal Safety Strips
(1,2 or 3 pieces)
FP554a
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5
Vermont Castings EWF36A
D
Rise
B
G
H
B
Offset
C
E
6 FT.
G
H
A
Hearth
Floor
Chimney
Section
CHIMNEY FLUE EXIT
Elbow
TCS8A
Support
Example 1 Example 2 Example 3
Offset
Rise
Chimney Requirements - Offset Installations
30°
Return
Elbow
FP282
30˚ Elbow Offsets
Notes: G + H cannot exceed 20 feet.
Air Space Clearances: “S” Series (3-wall) = 2” Min. to Combustibles
Illustration Key
The following safety rules apply to
offset installations (letters correspond
with illustration above):
A. Height of the chimney is measured
from the hearth to the chimney exit.
Maximum: 50’
Minimum:
Without Elbows 17’0”
With 2 Elbows* 19’0”
With 4 Elbows* 21’0”
B. Do not use more than 4 elbows per
chimney.
Attach the straps of the return (top)
elbow to a structural framing member.
The offset (first) elbow of any pair does
not have straps.
Fig. 3 Chimney system requirements.
EWF36A
30°
Offset
Elbow
30°
Return
Elbow
30°
Offset
Elbow
C. The chimney cannot be more than 30˚
(45˚ in Canada) from the vertical plane in
any installation*.
D. The maximum length of the angled run
of the total chimney system is 20 feet. (G
plus H cannot exceed 20 feet.)
E. A chimney support (Model TCS8A)
is required every 6 feet of angled run of
chimney. Chimney supports are required
for every 30 feet and 60 feet of vertical
chimney height above the hearth.
Determine the offset distance of your
chimney arrangement from the centerline
of the fireplace to the centerline of the
chimney where it is to pass through the
first ceiling.
NOTE: This offset distance may not be
your full offset distance. See Examples 2
and 3.
1’
3’ 4’
1¹⁄₂'
0 0 0 0 0 3” 11”
1 0 0 0 0 8
0 1 0 0 0 11
2 0 0 0 0 13¹⁄₂" 29¹⁄₄"
1 1 0 0 0 16
0 0 1 0 0 20
2 1 0 0 0 21³⁄₄" 43¹⁄₂"
0 0 0 1 0 26
0 1 1 0 0 28
1 0 0 1 0 31¹⁄₂" 60¹⁄₄”
0 1 0 1 0 34
0 0 2 0 0 37
1 1 0 1 1 41¹⁄₂" 77³⁄₄"
0 0 1 1 1 45" 83³⁄₄"
0 1 2 0 1 47¹⁄₄" 87¹⁄₂"
FP269
0 0 0 2 1 51" 94"
0 1 1 1 1 53¹⁄₄" 98"
0 0 3 0 1 56¹⁄₄" 103¹⁄₄"
0 1 0 2 1 59
0 0 2 1 1 62
0 1 3 0 1 64¹⁄₂" 117¹⁄₂"
0 0 1 2 1 68
0 1 2 1 1 70
0 0 0 3 1 74¹⁄₄" 134¹⁄₂"
0 1 1 2 2 78" 140
0 0 3 1 2 81" 146"
0 1 0 3 2 84" 151
0 0 2 2 2 87" 156
0 1 3 1 2 89¹⁄₄" 160¹⁄₄"
0 0 1 3 2 93" 166
0 1 2 2 2 95
0 0 0 4 2 99¹⁄₄" 177³⁄₄"
0 1 1 3 2 101
0 0 3 2 2 104
0 1 0 4 2 107¹⁄₄" 191¹⁄₂"
0 0 2 3 2 110
0 1 3 2 3 114" 203
0 0 1 4 3 117³⁄₄" 209³⁄₄"
0 1 2 3 3 120" 213¹⁄₂"
0 0 0 5 3 123³⁄₄" 220"
Offset
Chimney
Support
Rise
¹⁄₄" 20"
¹⁄₄" 25¹⁄₄"
¹⁄₂" 34¹⁄₄"
¹⁄₄" 40³⁄₄"
¹⁄₄" 51¹⁄₄"
¹⁄₂" 55¹⁄₄"
¹⁄₂" 65¹⁄₂"
¹⁄₂" 70³⁄₄"
¹⁄₄" 108¹⁄₂"
¹⁄₄" 113¹⁄₂"
¹⁄₄" 124"
¹⁄₂" 128"
³⁄₄"
¹⁄₄"
¹⁄₂"
³⁄₄"
¹⁄₄" 170³⁄₄"
¹⁄₄" 181³⁄₄"
¹⁄₄" 186¹⁄₄"
¹⁄₄" 196³⁄₄"
¹⁄₄"
6
20005167
Planning Information
2' Min.
2' Min.
3'
Min.
0 To 10'
3'
Min.
0 To 10'
Reference
Point
L
1
L
1
L
T
TOTAL
LENGTH
(L
T
)
INSTALLED
LENGTH
(L
1
)
"
"
"
"
"
"
"
"
TRIPLE
WALL
81
818
83
84
Vermont Castings EWF36A
Planning an installation is very important to ensure
safety and to save time and money. An installer must
predetermine where a fireplace will be set and how the
chimney system will be run.
NOTE: If installing the EWF36CFTK at a later date and
if the hearth is being raised in front of the firepalce, the
fireplace must be raised to the same height.
Mounting the Fireplace
The fireplace is shipped with lifting handles attached to
each side with lifting straps. NOTE: The lifting straps
are intended for ligting unit off of the skid and final positioning. Unit should remain on skid until final positioning. After fireplace is in position, the lifting handle and
straps may be removed or left in place.
A fireplace may only be mounted on the following surfaces:
1. A flat combustible surface.
2. A raised wooden platform.
3. A concrete block or other solid object placed beneath
each of the four (4) corners of the fireplace.
The fireplace must be spaced 1” from a combustible
back wall and 1” from a combustible side wall or sup-
port. (Page 13, Fig. 17)
Planning the Chimney Run
5. No more than 2 offsets (4 total 30° elbows in U.S./or
2 total 45° elbows in Canada) per fireplace may be
used.
6. A guy wire stabilizer is required for chimneys extending more than 6’ (1.8m) above a roof line.
The Ten Foot Rule
Major U.S. building codes specify a minimum chimney
height above the roof top. The “Ten Foot Rule” is a fire
safety rule and not a draft rule. To ensure proper draft,
it is recommended that you always meet or exceed the
“Ten Foot Rule,” especially when installing a termination
on a high pitch roof. (Fig. 5)
The key points of the “Ten Foot Rule” are:
1. If the horizontal distance from the chimney to the
peak of the roof is 10’ (3m) or less, the top of the
chimney must be at least 2’ (610mm) above the peak
of the roof, but never less than 3’ (914mm) in height
above the highest point where it passes through the
roof.
2. If a horizontal distance from the chimney to the peak
of the roof is more than 10’ (3m), a chimney height
reference point is established that is on the surface
of the roof a distance of 10’ (3m) from the chimney in
a horizontal plane. The top of the chimney must be
at least 2’ (610mm) above the reference point, but
never less than 3’ (914mm) in height above the highest point where it passes through the roof.
FP288a
Fig. 4 Installed lengths of chimney sections.
Determine how the chimney will be run, length of run
and chimney components required to complete the
job. (Fig. 4) Never install a chimney below minimum
heights.
In planning a chimney system, it is important to know:
1. The height of a chimney is measured from the hearth
to the exit point on the termination.
2. A chimney cannot be offset more than 30° from a
vertical plane.
3. A chimney may run straight up or it may be necessary to offset it to avoid obstructions.
4. The maximum length of an angled run (total chimney
system) is 20 feet.
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AC246
Fig. 5 Ten Foot Rule illustration.
7
Vermont Castings EWF36A
Chimney Supports
The chimney system is supported by the fireplace for
vertical chimney heights less than 30’ (9m) above the
hearth. Chimney supports are required if the vertical
height exceeds 30’ (9m). Locate chimney supports
at ceiling holes or other structural framing at 30’ (9m)
heights. Spacing between chimney supports must not
exceed 30’ (9m). Use Chimney Support Model TCS8A.
(NOTE: The TCS8A cannot be mounted directly to
the fireplace.) Support provided by elbow straps fulfills
the support requirement only if they are spaced as previously described. (A chimney support is 2¹⁄₂" (64mm)
long when installed.)
Angled chimney runs require a support every 6’ (1.8m)
in addition to the elbow straps. Chimney supports are
used for this function. (Fig. 6)
Chimney Support Strap
TCS8A
FP284a
Fig. 6 Chimney support installation.
Installation
Insulating Fireplace Enclosure
for Cold Climates
If you live in a cold climate, it is not required but
highly recommended that you insulate fireplace
enclosure to eliminate cold air penetration as much as
possible.
Insulate base of fireplace with a noncombustible
insulation rated for a minimum of 300° F. Insulating
is very important for outside wall installations over
a concrete slab. If fireplace is installed on a platform,
insulation should be placed on top of the platform
before fireplace is set. (Fig. 7)
When a fireplace is installed in a chase or on an
outside wall, enclosure should be treated like any
outside wall in a home. Insulation should be installed
on the inside wall as well as the outside wall(s). In a
chase, it is also a good idea to install a firestop at the
first ceiling level above the fireplace and enclose the
chase with sheeting material. Insulation may then be
installed above sheeting material to assure the space
around the fireplace is totally protected. (Fig. 2)
When installing the chimney, DO NOT caulk between
outer pipe and firestop. It is vital that some air be allowed to flow through this very thin gap.
CAUTION: When installing a fireplace in an insu
lated enclosure, be sure all required air spaces
are maintained. (Page 13, Fig. 17)
-
Chase Installation
A chase is a vertical box-like structure which encloses
the fireplace and/or chimney. Chases are typically built
on the outside of the house with fireplace opening cut
into the outer wall of a room. (Page 5, Fig. 2)
If you need help in determining fireplace location or how
the chimney system should be run, contact your Vermont Castings dealer for assistance.
8
Platform
Fig. 7 Insulating between platform and fireplace.
Hard
Flat
Surface
Insulation
FPC555a
20005167
Vermont Castings EWF36A
9"
(241mm)
Framing
Framing can be constructed before or after the fireplace
is set in place, however, most installers build the frame
before setting the fireplace.
Frame fireplace with 2 x 4 lumber or heavier materials. Refer to framing dimensions in Figure 1 for basic
fireplace specifications.
NOTE: Framing should be positioned to accommodate
wall covering and fireplace facing material.
EB1 (Receptacle) Hookup
Option for Circulating Models Only
Wiring should be installed by a certified electrician.
Turn off circuit breaker before wiring models.
Once fireplace is secured, complete wiring the fan kit.
Remove knockout in the center of the back of the EB1
and install listed cable clamps. Feed electrical wire
through listed cable clamp leaving approximately six (6)
inches of wire exposed through the EB1. Secure listed
cable clamp to the wire.
Attach white wire from power source to one (1) wire
of receptacle and secure with nut. Attach black wire
from power source to the other wire of receptacle and
secure with nut. Be sure nuts are secured tightly.
Secure EB1 assembly to inside of electrical box coverplate using two screws. Attach cover to face of the EB1
while being careful to position excess wire completely
within the EB1, then attach coverplate to fireplace.
Chimney Set-Up
Since you have already planned the chimney run, you
should know exactly how the installation is to be accomplished - how much pipe is required, the number of
elbows, if any, and type of termination to be used.
CAUTION: Report to your dealer any parts damaged
in shipment, specifically check the end connection of
chimney sections and elbows.
NOTE: The EWF36A fireplace must use CFM Corporation model triple wall 8” chimney components only. The
installation procedure described in this manual applies
only to this system.
Straight-Up Chimney Installation
To mark the centerline of the flue, put the fireplace
in final position and measure out from the wall: 9¹⁄₂"
(241mm). Mark a spot on the ceiling directly above the
fireplace. Draw a line parallel to the back wall through
this mark. (Fig. 8)
Using a plumb bob positioned directly over center point
of fireplace flue collar, mark the ceiling to establish the
chimney center point. (Fig. 8)
Chimney Centerline
Actual Centerpoint
Plumb Line
Plumb Bob
Imaginary Centerpoint
FPC556a
Fig. 8 Locate centerline of chimney with plumb line.
Offset Installation
In order to clear an obstruction, it may be necessary to
offset chimney from vertical. This is accomplished by
using elbows. Use the 30˚ Offset Elbow table on Page 6
to determine proper offset and parts required.
Each offset requires two (2) elbows. The second elbow
is equipped with support straps. It is very important to
install the second elbow in each offset as close to the
ceiling or support as possible so that the elbow straps
can be secured to framing members to help support the
weight of the chimney.
Determine offset distance of your chimney arrangement
from centerline of fireplace to centerline of chimney
where it is to pass through ceiling.
Locate center point of the chimney on ceiling as though
a straight up chimney arrangement is to be used. Measure your offset dimension from straight up chimney
center point on ceiling.
20005167
9
Vermont Castings EWF36A
Ceiling Chimney Hole/
Possible Obstructions
The size of the hole in ceiling will vary with the angle at
which the chimney passes through ceiling.
Drive a nail up through ceiling at marked chimney
center point. Go to floor above and see where hole
will be cut. Check to see where existing ceiling joists
and other possible obstructions are located...i.e. wiring,
plumbing etc... If necessary, re-position chimney and/or
fireplace to avoid obstructions.
Cutting the Hole
Cover fireplace collar opening and cut proper sized
chimney hole in chimney.
Framing the Ceiling Hole
Frame the ceiling chimney hole as shown in Figure
10. It is good practice to use framing lumber that is the
same size as the ceiling joists; this is a requirement at
attic level.
The following table gives firestop spacer model numbers:
Chimney Hole Size
Angle of Chimney at Ceiling
Size of Chimney Vertical 30°
FS2A FS6A
8” Flue 17¹⁄₂” x 17¹⁄₂” 17⁷⁄₈” x 29⁵⁄₈”
(445 x 445mm) (454 x 753mm)
Fig. 9 Ceiling chimney hole sizes necessary for installing
firestop spacer.
The inside dimension of the frame must be the same
as the hole size selected from Figure 9 in order to
provide required the 2” (51mm) air space between the
outside diameter of the chimney and the edges of the
framed ceiling hole.
Positioning, Safety Strips,
Securing the Fireplace
Slide fireplace into position.
Safety strips are used to ensure that any combustible
materials in front of the fireplace are protected even
though a noncombustible hearth extension is required.
When the finished extended hearth is added, the top
of the finished hearth must be flush with the bottom of
the fireplace. “Z” shaped metal safety strips have been
supplied with the fireplace and are required for instal
lation. The safety strips provided have a 1” offset. For
applications with a greater offset, “Z” shaped strips will
have to be fabricated of metal. Overlap safety strips at
least 1/2” to provide a positive joint. The safety strips
must also extend at least 1¹⁄₂” (38mm) beyond the sides
of the fireplace. (Fig. 11)
-
Existing
Ceiling
Joists
New Framing
Members
Fig. 10 Typical frame for ceiling chimney hole.
1¹⁄₂”
(38mm)
Fig. 11 Safety strip installation.
17¹⁄₂”
(445mm)
1/2” Min.
Overlap
17¹⁄₂”
(445mm)
Ceiling
Fireplace
Platform
Hearth Ext.
Chimney
Hole
FP551b
“Z” Metal Safety
Strips (1 or 2 pcs.)
“Z” Safety
Strip
Decorative
Hearth
Face
FP557b
NOTE: Safety strips are not required over noncombustible floors where all supports at the base of the fireplace are noncombustible.
Two (2) nailing flanges are supplied with the fireplace.
To level the box and secure it firmly in place, remove
the nailing flanges from the hearth and install at the
sides of the fireplace as shown in Figure 12.
10
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