Desa WCM-36J Quick start guide

For more information, visit www.desatech.com
SAVE THIS BOOK
This book is valuable. In addition to instructing you
on how to install and maintain your appliance, it also
contains information that will enable you to obtain re-
placement parts or accessory items when needed. Keep
it with your other important papers.
-
place or for use with a vented gas log approved to ANS
Z21.60, Z21.84 or RGA2-72 standards or for use with a vent-
free gas log heater approved to ANS Z21.11.2 standard.
      
     



etc.) should be contacted before installation to deter-
mine the need to obtain a permit.


OUTDOOR WOOD BURNING FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
(V)JM36, (V)JM42,
(V)JM50 SERIES, WCM-36J,
WCM-42J AND WCM-50J
WOOD BURNING MASONRY
FIREPLACES WITH INSULATION
ICC-ES #ESR-2542

www.desatech.com 122273-01C2
-

damage or loss of life. Refer to this manual for assis-
      
installer or local distributor.
TABLE OF CONTENTS
Safety .................................................................. 2
Specications ...................................................... 3
Fireplace Installation............................................ 6
Venting Installation .............................................. 8
Optional Gas Line Installation............................ 13
Brick Installation ................................................ 14
Glass Door Installation ...................................... 29
Operation and Maintenance Guidelines ............ 31
Technical Service............................................... 33
Replacement Parts............................................ 33
Parts ................................................................. 34
Accessories ....................................................... 37
SAFETY

 

or liquids in the vicinity of this
or any other appliance.
 
appliance should be located
     
furniture and draperies.
 

the appliance.
    -


    

only. When processed wood fuel

stir the logs while they are burn-

beenevaluatedfortheapplication
  
warnings and caution markings
on packaging prior to use.

used as a substitute for a furnace
 
supplemental heat only.
   

Before beginning the installation of the
fireplace, read these instructions through
completely.
• This DESA Heating, LLC replace and its
components are safe when installed ac-
cording to this installation manual. Unless
you use DESA Heating, LLC components,
which have been designed and tested for
the replace system, you may cause a re
hazard.
• The DESA Heating, LLC warranty will be
voided by and DESA Heating, LLC dis-
claims any responsibility for the following
actions.
a. Modification of the fireplace, com-
ponents, doors, air inlet system and
damper control.
b. Use of any component part not manu-
factured or approved by DESA Heat-
ing, LLC in combination with a DESA
Heating, LLC replace system.
Proper installation is the most important step
in ensuring safe and continuous operation
of the replace. Consult the local building
codes as to the particular requirements
concerned with the installation of all factory
built replaces.


the manufacturer's instructions


use with this insert.

www.desatech.com
122273-01C 3
SPECIFICATIONS

29"
14 1/2"
22 1/2"
26 5/8"
4 1/2"
15 5/8"
4 1/2"
1"
58"
7 1/4"
11 "
15 1/4"
3 1/2"
9 1/2"
10 1/2"
67"
61"
49"
11 "
7"
30"
1" 45 1/8"
36"
OUTSIDE AIR
ACCESS
GAS LINE
ACCESS
36" HEARTH
1 5/16"
19 13/16"
(Ref.)
35 3/8"
22"
18 3/8"
Figure 1 - 36" Models (V)JM36 Series and WCM-36J

www.desatech.com 122273-01C4
SPECIFICATIONS Continued

22 3/4"
30 1/2"
29"
4 3/8"
15 3/4"
5/8"
17 5/8"
67"
61"
49"
7"
1"
30"
11 "
58"
42"
51 1/8"
4 1/2"
3 1/2"
9 1/2"
10 1/2"
81/2"
13"
17"
OUTSIDE
AIR
ACCESS
GAS LINE
ACCESS
23 13/16"
(Ref.)
1 5/16"
41 3/8"
25"
22 1/2"
42" HEARTH
Figure 2 - 42" Models (V)JM42 Series and WCM-42J

www.desatech.com
122273-01C 5
SPECIFICATIONS Continued

38
1
/
2
"
28
1
/
2
"
4
3
/
8
"
17
5
/
8
"
19
1
/
4
"
24"
49"
30"
11 "
61"
67" 58"
7"
1"
59"
50" 4
1
/
2
"
3
1
/
2
"
9
1
/
2
"
10
1
/
2
"
8
1
/
2
"
13"
17"
GAS LINE
ACCESS
OUTSIDE
AIR
ACCESS
23
13
/
16
"
(Ref.)
1
5
/
16
"
33"
49
3
/
8
"
22
1
/
2
"
50" HEARTH
Figure 3 - 50" Models (V)JM50 Series and WCM-50J

www.desatech.com 122273-01C6
FIREPLACE INSTALLATION

1. Frame opening for replace using dimen-
sions shown in Figures 4 and 5.
2. If replace is to be installed directly on
carpeting, tile (other than ceramic) or any
combustible material other than wood
ooring, replace must be installed upon
a metal or wood panel extending full width
and depth of replace.
3. Set replace directly in front of this open-
ing and slide unit back until nailing anges
touch side framing.
4. Check level of the replace and shim with
sheet metal if necessary.
5. Before securing fireplace to prepared
framing, ember protector (provided) must
be placed between hearth extension (not
supplied) and under bottom front edge of
replace to protect against glowing embers
falling through. If replace is to be installed
on a raised platform, a Z-type ember pro-
tector (not supplied) must be fabricated to
t your required platform height. Ember
protector should extend under replace a
minimum of 1 1/2". Ember protector should
be made of galvanized sheet metal (28
gauge minimum to prevent corrosion.
6. Using screws or nails, secure replace to
framing through anges located on sides
of replace.
30.125"
59" (50" Models)
58.125"
67.125"
51.25" (42" Models)
45.25" (36" Models)
28.250" (36" Models)
Figure 4 - Framing Dimensions
71" (50" Models)
100" (50" Models)
65" (42" Models)
92" (42" Models)
86.5" (36" Models)
61" (36" Models)
Maintain 1 1/2"
Clearance
at Sides and
Back of Fireplace
1 1/2" Clearance
Not Required at
Nailing Flanges
Figure 5 - Corner Installation

To determine the safest and most efcient
location for the replace, you must take into
consideration the following guidelines:
1. The location must allow for proper clear-
ances (see Figures 4 and 5).
2. Consider a location where replace will
not be affected by drafts, air conditioning
ducts, windows or doors.
3. A location that avoids cutting of joists or
roof rafters will make installation easier.
4. An outside air kit is available with this
replace (see Optional Outside Air Kit on
page 8).


Back and sides of replace 1 1/2" min.*
Front of replace 48" min.
Floor** 0" min.
Perpendicular wall to opening 18" min.
36" Models 12" min.
Top spacers 0" min.
Mantel clearances see Mantels, page 7
Chimney outer pipe surface 2" min.
36" Model 1" min.
* Not required at nailing anges
** See step 2 of Framing
-
quired air spaces with insulation
or other materials.

Residential Installation
Minimum height of chimney, measured from
base of replace to ue gas outlet of termina-
tion, is 16 feet for straight ue or a ue with
one elbow set. Maximum distance between
elbows is 6 feet. For systems with two elbow
sets, minimum height is 22 feet. Maximum
height of any system is 50 feet. This measure-
ment includes replace, chimney sections and
height of termination assembly at level of the
ue gas outlet (see Figure 15, page 11).

Outdoor Installation
Minimum height of chimney, measured
from base of replace to ue gas outlet of
termination, is 9.5 feet (minimum of 4 feet of
chimney pipe sections required for outdoor
installation).

www.desatech.com
122273-01C 7
Note: For outdoor installations, fireplace
enclosure must allow for adequate drainage
and fresh air ventilation. It is recommended
that a sealed, corrosion resistant catch pan
with provision for drainage be installed under
replace within replace enclosure.
HEARTH ExTENSION
A hearth extension projecting a minimum of
20" in front of and a minimum of 12" beyond
each side of replace opening is required to
protect combustible oor construction in front
of replace. Fabricate a hearth extension
using a material which meets the following
specications: a layer of noncombustible,
inorganic material having a thermal conduc-
tivity of K=0.84 BTU IN/FT, HR. F (or less) at
1" thick. For example, if the material selected
has a K factor of 0.25, such as glass ber, the
following formula would apply:
0.25 x 1.0" = 0.30" thickness required
0.84
Thermal conductivity "K" of materials can be
obtained from manufacturer or supplier of
noncombustible material. If hearth extension
is to be covered, use noncombustible mate-
rial such as tile, slate, brick, concrete, metal,
glass, marble, stone, etc. Provide a means
to prevent hearth extension from shifting and
seal gap between replace frame and hearth
extension with a noncombustible material
(see Figure 6).

is to be installed only as shown

FIREPLACE INSTALLATION
Continued
Figure 6 - Hearth Extension
Seal Gap
Fireplace Front
Ember Protector
Fireplace Front
Raised Hearth
Fireplace Front
Elevated
Ember Protector
Ember Protector
Seal Gap
Hearth
Extension

A mantel may be installed if desired (see Figure
7). Woodwork such as wood trims, mantels or
any other combustible material projecting from
front face must not be placed within 12" (36"
Models) or 18" (42/50" Models) of replace
opening. Combustible materials above 12" (36"
Models) or 18" (42/50" Models) and projecting
more than 1 1/2" from replace must not be
placed less than 15" (36" Models) or 21" (42/50"
Models) from the top opening of the replace
(NFPA STD 211, Sec. 7-3.3.3).
Mantels or any other combustible material
also may come up to side edge of black metal
face of replace as long as projections from
front face fall within limit shown in Figure 7.
12 1/4" Ref.
6"
Ref.
15" Min. (36" Models)
21" Min. (42/50"
Models)
12" Min.
(36" Models)
18" Min.
(42/50"
Models)
11/2" Max.
3" Nom.
33°
Combustible
Material
Safe
Zone for
Projection of
Combustible
Materials
Fireplace Opening
Upper
Section of
Fireplace
Figure 7 - Mantel Clearances to
Combustible Material
FIREBOX
SAFE ZONE
Top View of Fireplace
3" Max.
4.5"
Min. to
Perpendicular
Side Wall
7.75" (36" Models)
11.5" (42/50" Models)
33°
Combustible
Material
Must Not
Overlap
Front Face
12" - 36" Models
18" - 42/50" Models

www.desatech.com 122273-01C8
Figure 9 - Lineal Gain

PART NO.  GAIN
Georgian Fireplace 66 1/2 "
12-12DM
12-12HT Pipe Section 10 5/8
"
18-12DM
18-12HT Pipe Section 16 5/8
"
24-12DM
24-12HT Pipe Section 23 5/8
"
36-12DM
36-12HT Pipe Section 34 5/8
"
48-12DM
48-12HT Pipe Section 46 5/8
"
RLT-12D
RLT-12HT Round Termination 7 3/4
"
*
STL-12D Square Chase-Top
with Slip Section 7
" to 15 " *
* The lineal gain for the terminations is mea-
sured to the ue gas outlet height.
Hemmed
End
12 3/8"
Stainless
Inner Pipe
15" Galvanized
Outer Pipe


Each double wall chimney section consists of a
galvanized outer pipe, a stainless steel inner ue
pipe and a wire spacer. The pipe sections must
be assembled independently as the chimney is
installed. When connecting chimney directly to
the replace, the inner ue pipe section must
be installed rst with the lanced side up. The
outer pipe section can then be installed over
5 the ue pipe section with the hemmed end
up. Press down on each pipe section until the
lances securely engage the hem on the replace
starter. The wire will assure the proper spacing
between the inner and outer pipe sections.
Figure 8 - Outside Air Kit
Secure to Collars with Metal Tape,
Screws or Straps (Min. of 1/4" x 20"
in size)
Air Inlet
Location
Must Allow
For Bushes
or Snow
Vent Hood
Required for
Wall Installation
Air Inlet
Eyebrow
Vented Crawl Space
(Check Local Codes
Before Installing in a
Vented Crawl Space)

The DESA Heating, LLC chimney system
consists of 12", 18", 24", 36" and 48" snap-
lock, double-wall pipe segments, planned
for maximum adaptability to individual site
requirements. Actual lengths gained after
tting overlaps must be taken into consider-
ation (lineal gain) and are given in the lineal
gain chart (see Figure 9). Lineal Gain is the
actual measurable length of a part after two or
more parts are connected. For Canada, use
chimney parts designated "HT".
VENTING INSTALLATION


The installation of an outside air kit should
be performed during the rough framing of
the replace due to the nature of it's location.
Outside combustion air is accessed through
a vented crawl space (AK4F) or through a
sidewall (AK4).
   
inlet ducts shall not terminate
in attic space.
    
      

termination.
    
the collar around the chimney at

be obstructed. Never use blown
    
enclosure.

www.desatech.com
122273-01C 9
VENTING INSTALLATION
Continued
 RISE 
A B 12" 18" 24" 36" 48"
4 3/8" 16 3/8" ELBOW SET ONLY
9 3/4" 25 1/2" 1
12 3/4" 30 3/4" 1
15" 34 3/4" 1
18" 40" 1 1
21 1/4" 46 1/4" 1
23 3/4" 49 1/4" 1 1
27 3/4" 56 3/4" 1
30" 60 3/4" 1 1
33" 66" 1
36" 71" 1 1
38 1/4" 75" 2
41 1/4" 80 1/4" 1 1 1
45" 86 3/4" 2
46 3/4" 89 1/2" 1 1 1
51" 97" 1 1
53 1/4" 101" 2
56 1/4" 106 1/4" 2
59 1/4"111 1/2" 1 1 1
61 3/4" 115 1/2" 1 2
64 3/4" 120 3/4" 1 2
68 1/4" 127" 2 1
70" 130" 1 1 2
74 1/4" 137 1/2" 1 2 1
76 3/4" 141 1/2" 1 2 1
79 3/4" 146 3/4" 4
OFFSET CHART (22-50 FT. SYSTEM HEIGHT)
Figure 11 - Ceiling Support Pipe
12S-12DM
2" Min.
Straps
Straps
Straps
Straps
Detail A
Return Elbow
Detail B
Angle Firestop
See Detail A
See Detail B
Continue to assemble chimney sections as
outlined above, making sure that both the
inner and outer pipe sections are locked to-
gether. When installing double wall snap-lock
chimney together, it is important to assure
the joint between the chimney sections is
locked. Check by pulling chimney upward
after locking. The chimney will not come apart
Figure 10 - Elbow Offset
B
A
Screws
if properly locked. It is not necessary to add
screws to keep the chimney together (excep-
tion, see Figure 10).

1. To achieve desired offset, you may install
combinations of 12", 18", 24", 36" and 48"
length of double wall pipe (see offset chart
and Figure 10).
2. Chimney weight above offset rests on
return elbow. Straps must be securely
nailed to rafters or joists (see Figure 11,
details A and B).
3. Maximum length of pipe between sup-
ports (return elbow or 12S-12DM) is 6'
of angle run. Maximum of two 6' angle
run sections per chimney system (see
Figure 12, page 10).
4. All pipe connections between the offset
and return must be secured with two
screws on the outer pipe only (see
Figure 10). Do not penetrate the inner
stainless.

www.desatech.com 122273-01C10
VENTING INSTALLATION
Continued


Firestop spacers are required at each point
where the chimney penetrates a oor space.
Their purpose is to establish and maintain
the required clearance between the chimney
and the combustible materials. When the pipe
passes through a framed opening into a living
space above, the restop must be placed onto
the ceiling from below as shown in Figure 13.
They also provide complete separation from
one oor space to another or attic space as
required by most codes. When the double wall
pipe passes through a framed opening into an
attic space, the restop must be placed into an
attic oor as shown in Figure 14.
Figure 13 - Firestop Spacer with Living
Space Above Ceiling
Figure 14 - Firestop Spacer with Attic
Space Above Ceiling
Existing
Ceiling
Frame
Firestop
Spacer
Screws or
Staples
(Min. of 8)
Firestop
Spacer
Screws or Staples
(Min. of 8)

To maintain a 1" (36" Models) or 2" (42/50"
Models) clearance to the pipe on a roof with a
pitch, a rectangular opening must be cut.
1. Determine center point through which pipe
will penetrate roof.
2. Determine center point of roof. Pitch is
distance the roof drops over a given span,
usually 12". A 6/12 pitch means that roof
drops 6" for each 12" measured horizon-
tally down from roof rafters.
3. Use roof opening chart (Figure 15, page
11) to determine correct opening length
and ashing required.
4. Remove shingles around opening mea-
sured. Cut out this section.
Existing
Ceiling
Frame
Figure 12 - Typical Offset Terminations
Return
Elbow
Offset
Elbow
Return
Elbow
Offset
Elbow
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
Return
Elbow
Offset
Elbow
Offset
Elbow
Return
Elbow
A B C
Offset
Elbow
Ceiling
Support Pipe
12S-12DM
Return
Elbow