Vermont Castings EWF36A Mounting instructions



Homeowner’s
Installation and
Operating Manual

20005167 5/13 Rev. 22
5167
EPA36
cover
3/02







2
Vermont Castings EWF36A
20005167

Thank you for purchasing a Vermont Castings, EWF36A replace. An efcient replace 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 re 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 En-
vironmental 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 specic 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 specications, please refer to Page 3.
The EWF36A is designed, tested and listed for burning wood. Do not burn other fuels.
Installation or service of this woodburning rep should only be completed by a qualied installer, preferably NFI or WETT
(Canada) certied.
Please read the appropriate sections of this manual before you install and use your EWF36A. For information on opera-
tion and maintenance of the EWF36A, refer to Pages 17 and 20.
The EWF replace 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.


Introduction ................................................................ 2
Safety Information ..................................................... 3
Specications ............................................................ 4
Planning Information.................................................. 7
Installation ................................................................. 8
Operation ................................................................. 18
Maintenance ............................................................ 22
Replacement Parts .................................................. 27
Optional Accessories ............................................... 29
Warranty .................................................................. 31
 Fuels used in gas, woodburn-
ing or oil red appliances, and the products of combus-
tion of such fuels, contain chemicals known to the State
of California to cause cancer, birth defects and other
reproductive harm.
California Health & Safety Code Sec. 25249.6

3
Vermont Castings EWF36A
20005167


Read all instructions and warnings carefully before starting installation. Failure to fol-
low these instructions may result in a possible re hazard and will void the warranty.

The EWF36A replace is a solid fuel, woodburning, heat
circulating replace.

Vermont Castings Group replaces 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
 beginning installation.
If you notice any damage to replace or component parts,
immediately report damage to your Vermont Castings
Group dealer.
Only use Vermont Castings Group components or the war-
ranty will be voided and a re hazard may be created.
Vermont Castings Group warranty will be voided by and
Vermont Castings Group disclaims any responsibility for
the following actions:
• 

• 

• 
(except for chase
ashings as detailed in Vermont Castings Group
Chimney Top installation instructions).
• 

•       







Consult local building codes to ensure that you are in
compliance installing the replace.
This replace and chimney system must be vented to the
out-of-doors.
        






      

       











The replace should not be located in areas that create
drafts (ie: frequently opened doors and central heating
air inlets/outlets) that hamper the normal ow of air into
the re.





4
Vermont Castings EWF36A
20005167

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” (450-610 mm)
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)
*Under specic test conditions used during EPA emissions
standard testing.
**This value can vary depending on how the unit is oper-
ated, 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 ef-
ciencies.
***These values are based on operation in building-code
conforming homes under typical winter climate conditions.
If your home is of nonstandard construction (e.g. unusu-
ally well insulated, not insulated, built under ground, etc.)
or if you live in a more severe or more temperate climate,
these gures may not apply. Since so many variables affect
performance, consult your Vermont Castings’ Authorized
Dealer to determine realistic expectations for your home.

" (25mm)
"6"
(16mm)
Recessed
Nailing
Flange
5167
EPA36 specs
1356O" Dia.
(343mm)
Rough Opening Width 43"
Rough
Opening
Height
Rough
Opening
Depth
6756M" (1708mm)
6756M" (1708mm)
4756O" (1207mm)
5/8" (16mm)
95" (2413mm)
27"
(686mm)
26"
(660mm)
856O"
(216mm)
(1092mm)
41" (1041mm)
4756O"
(1207mm)
5156O"
(1308mm)
36" (914mm)
41" (1041mm)
1456M"
(362mm)
1456M"
(362mm)
12(6"
(327mm)
4(6"
(124mm)
1256O"
(318mm)
Electrical
Access
Outside
Air
12(6"
(327mm)

 EWF36A specications and framing.

5
Vermont Castings EWF36A
20005167
 Fireplace and chase parts identication.
FP554a
FP554a
BFC
Fireplace and chase parts identification
circulating model
8/21/00 djt

Insulation methods shown are
optional for cold climate, not a
requirement for unit operation.
Termination Cap
Storm Collar
Pan Flashing
Draftstop
Batt Insulation
(cut out around
restop)
Firestop
Ceiling Level
Standoff
Metal Safety Strips
(1,2 or 3 pieces)
Batt Insula-
tion be
used in the
Chase.
Outside Air
Cover Plate
Andiron
Brick Ledge

6
Vermont Castings EWF36A
20005167
D
Rise
BG
H
B
Offset
C
E
6 FT.
G
H
A
Hearth
Floor
Chimney
Section
CHIMNEY FLUE EXIT
Elbow
FP269
MBUF
5/16/96
rev. 5/25
TCS8A
Support
Example 1 Example 2 Example 3

 G + H cannot exceed 20 feet.
Air Space Clearances: “S” Series (3-wall) = 2” Min. to Combustibles

The following safety rules apply to
offset installations (letters correspond
with illustration above):
 Height of the chimney is measured
from the hearth to the chimney exit.
EWF36A
Maximum: 50’
Minimum:
Without Elbows 17’0”
With 2 Elbows* 19’0”
With 4 Elbows* 21’0”
 Do not use more than 4 elbows per
chimney.
Attach the straps of the return (top)
elbow to a structural framing member.
The offset (rst) elbow of any pair does
not have straps.
FP269
The chimney cannot be more than 30˚
(45˚ in Canada) from the vertical plane in
any installation*.
The maximum length of the angled run
of the  chimney system is 20 feet. (G
plus H cannot exceed 20 feet.)
 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 replace to the centerline of the
chimney where it is to pass through the
rst ceiling.
 This offset distance may not be
your full offset distance. See Examples 2
and 3.
 Chimney system requirements.
FP282
0 0 0 0 0 3” 11”
1 0 0 0 0 8¹⁄₄" 20"
0 1 0 0 0 11¹⁄₄" 25¹⁄₄"
2 0 0 0 0 13¹⁄₂" 29¹⁄₄"
1 1 0 0 0 16¹⁄₂" 34¹⁄₄"
0 0 1 0 0 20¹⁄₄" 40³⁄₄"
2 1 0 0 0 21³⁄₄" 43¹⁄₂"
0 0 0 1 0 26¹⁄₄" 51¹⁄₄"
0 1 1 0 0 28¹⁄₂" 55¹⁄₄"
1 0 0 1 0 31¹⁄₂" 60¹⁄₄”
0 1 0 1 0 34¹⁄₂" 65¹⁄₂"
0 0 2 0 0 37¹⁄₂" 70³⁄₄"
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"
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 1 59¹⁄₄" 108¹⁄₂"
0 0 2 1 1 62¹⁄₄" 113¹⁄₂"
0 1 3 0 1 64¹⁄₂" 117¹⁄₂"
0 0 1 2 1 68¹⁄₄" 124"
0 1 2 1 1 70¹⁄₂" 128"
0 0 0 3 1 74¹⁄₄" 134¹⁄₂"
0 1 1 2 2 78" 140³⁄₄"
0 0 3 1 2 81" 146"
0 1 0 3 2 84" 151¹⁄₄"
0 0 2 2 2 87" 156¹⁄₂"
0 1 3 1 2 89¹⁄₄" 160¹⁄₄"
0 0 1 3 2 93" 166³⁄₄"
0 1 2 2 2 95¹⁄₄" 170³⁄₄"
0 0 0 4 2 99¹⁄₄" 177³⁄₄"
0 1 1 3 2 101¹⁄₄" 181³⁄₄"
0 0 3 2 2 104¹⁄₄" 186¹⁄₄"
0 1 0 4 2 107¹⁄₄" 191¹⁄₂"
0 0 2 3 2 110¹⁄₄" 196³⁄₄"
0 1 3 2 3 114" 203¹⁄₄"
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"

 ¹⁄₂ 
 
 
FP282
MBUF
5/26/96
Offset
Rise
30°
Return
Elbow
30°
Return
Elbow
30°
Offset
Elbow
30°
Offset
Elbow

7
Vermont Castings EWF36A
20005167

Determine how the chimney will be run, length of run and
chimney components required to complete the job. (Fig.
4)  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 verti-
cal 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.
5. No more than 2 offsets (4 total 30° elbows in U.S./or
2 total 45° elbows in Canada) per replace may be
used.
6. A guy wire stabilizer is required for chimneys extending
more than 6’ (1.8m) above a roof line.

Major U.S. building codes specify a minimum chimney
height above the roof top. The “Ten Foot Rule” is a re
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’ (3 m) or less, the top of the chimney must
be at least 2’ (610 mm) above the peak of the roof, but
never less than 3’ (914 mm) 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’ (3 m), a chimney height refer-
ence point is established that is on the surface of the roof
a distance of 10’ (3 m) from the chimney in a horizontal
plane. The top of the chimney must be at least 2’ (610
mm) above the reference point, but never less than 3’
(914 mm) in height above the highest point where it
passes through the roof.
2' Min.
2' Min.
3'
Min.
0 To 10'
3'
Min.
0 To 10'
AC246
4/1/96
Reference
Point
AC246
 Ten Foot Rule illustration.
Planning an installation is very important to ensure safety
and to save time and money. An installer must predeter-
mine where a replace will be set and how the chimney
system will be run.
 If installing the EWF36CFTK at a later date and
if the hearth is being raised in front of the repalce, the
replace must be raised to the same height.

The replace is shipped with lifting handles attached to
each side with lifting straps.  The lifting straps are
intended for ligting unit off of the skid and nal position-
ing. Unit should remain on skid until nal positioning. After
replace is in position, the lifting handle and straps may be
removed or left in place.
A replace may only be mounted on the following sur-
faces:
1. A at 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 replace.
The replace  be spaced 1” from a combustible back
wall and 1” from a combustible side wall or support. (Page
13, Fig. 17)

L1
L1
LTTOTAL
LENGTH
(LT)
INSTALLED
LENGTH
(L1)
56O "
56O "
56O "
56O "
56O "
56O "
56O "
56O "
FP288A
MBUF-INSTALLED LENGTH
Triple wall
1/28/99 djt
TRIPLE
WALL
81
818
83
84
FP288a
 Installed lengths of chimney sections.

8
Vermont Castings EWF36A
20005167

The chimney system is supported by the replace for verti-
cal chimney heights less than 30’ (9m) above the hearth.
Chimney supports are required if the vertical height ex-
ceeds 30’ (9m). Locate chimney supports at ceiling holes
or other structural framing at 30’ (9m) heights. Spacing
between chimney supports  exceed 30’ (9m). Use
Chimney Support Model TCS8A.  
 Support
provided by elbow straps fullls 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)
FP284a
TCS8A
8/21/00
Chimney Sup-
port Strap
TCS8A
FP284a
 Chimney support installation.

A chase is a vertical box-like structure which encloses the
replace and/or chimney. Chases are typically built on the
outside of the house with replace opening cut into the
outer wall of a room. (Page 5, Fig. 2)
If you need help in determining replace location or how
the chimney system should be run, contact your Vermont
Castings dealer for assistance.


If you live in a cold climate, it is not required but 
 that you insulate replace enclosure to
eliminate cold air penetration as much as possible.
Insulate base of replace with a noncombustible insula-
tion rated for a minimum of 300° F. Insulating is 
 for outside wall installations over a concrete
slab. If replace is installed on a platform, insulation
should be placed on top of the platform replace
is set. (Fig. 7)
When a replace 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 restop at the rst ceiling level
above the replace and enclose the chase with sheeting
material. Insulation may then be installed above sheet-
ing material to assure the space around the replace is
totally protected. (Fig. 2)
When installing the chimney,  caulk between
outer pipe and restop. It is vital that some air be allowed
to ow through this very thin gap.




FPC555a
Platform insulation
BFC model
8/21/00 djt
Hard
Flat
Surface
Insulation
Platform
FPC555a
 Insulating between platform and replace.

9
Vermont Castings EWF36A
20005167

Framing can be constructed before or after the replace
is set in place, however, most installers build the frame
before setting the replace.
Frame replace with 2 x 4 lumber or heavier materials.
Refer to framing dimensions in Figure 1 for basic replace
specications.
Framing should be positioned to accommodate
wall covering and replace facing material.


Wiring should be installed by a certied electrician.
Turn off circuit breaker before wiring models.
Once replace 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 replace.

Since you have already planned the chimney run, you
should know exactly how the installation is to be accom-
plished - how much pipe is required, the number of elbows,
if any, and type of termination to be used.
 Report to your dealer any parts damaged in
shipment, specically check the end connection of chimney
sections and elbows.
 The EWF36A replace must use Vermont Castings
Group model triple wall 8” chimney components only. The
installation procedure described in this manual applies
only to this system.

To mark the centerline of the ue, put the replace in nal
position and measure out from the wall: 9¹⁄₂" (241mm). Mark
a spot on the ceiling directly above the replace. Draw a
line parallel to the back wall through this mark. (Fig. 8)
Using a plumb bob positioned directly over center point
of replace ue collar, mark the ceiling to establish the
chimney center point. (Fig. 8)

In order to clear an obstruction, it may be necessary to
offset chimney from vertical. This is accomplished by us-
ing 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 ceil-
ing 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 replace 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.
FPC556a
EPA36
LOCATE CENTER LINE
Circulating model
3/20/02 djt
956O"
(241mm)
Chimney Centerline
Actual Centerpoint
Plumb Line
Plumb Bob
Imaginary Cen-
terpoint
FPC556a
 Locate centerline of chimney with plumb line.

10
Vermont Castings EWF36A
20005167


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 oor above and see where hole will be cut.
Check to see where existing ceiling joists and other pos-
sible obstructions are located...i.e. wiring, plumbing etc...
If necessary, re-position chimney and/or replace to avoid
obstructions.

Cover replace collar opening and cut proper sized chim-
ney hole in chimney.

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 restop spacer model num-
bers:
FP551b
17 1/2"
Framing chimney hole
5/13/99 djt
Existing
Ceiling
Joists
17¹⁄₂”
(445mm)
17¹⁄₂”
(445mm)
Chimney
Hole
Ceiling
New Framing
Members
FP551b
 Typical frame for ceiling chimney hole.
The  of the frame 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.


Slide replace into position.
Safety strips are used to ensure that any combustible ma-
terials in front of the replace are protected even though
a noncombustible hearth extension is required.
When the nished extended hearth is added, the top of
the nished hearth must be ush with the bottom of the
replace. “Z” shaped metal safety strips have been sup-
plied with the replace and are required for installation. 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” (38 mm) beyond the sides of the replace. (Fig. 11)
Safety strips are not required over noncombustible
oors where all supports at the base of the replace are
noncombustible.
Two (2) nailing anges are supplied with the replace. To
level the box and secure it rmly in place, remove the nail-
ing anges from the hearth and install at the sides of the
replace as shown in Figure 12.
WF557
BR
11/10/97
“Z” Metal Safety
Strips (1 or 2 pcs.)
“Z” Safety
Strip
Hearth Ext.
Fire-
place
Plat-
form
FP557b
1¹⁄₂”
(38mm) 1/2” Min.
Overlap
 Safety strip installation.
Decorative
Hearth
Face
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 445 mm) (454 x 753 mm)
 Ceiling chimney hole sizes necessary for installing
restop spacer.
