Desa S36 Series Quick start guide

Save this manual for future reference.

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.

This replace is approved for use as a wood burning

replace or for use with a vented gas log approved to

ANS Z21.60, Z21.84 or RGA 2-72 standards or for use

with a vent-free gas log heater approved to ANS Z21.11.2

standard. A DESA hood must be installed when using a

vent-free log heater (see Accessories, page 16).

This wood burning replace complies with UL127-

CAN/ULS-S610-M87 standard as a FACTORY BUILT

APPLIANCE.

FOR CANADA: The authority having jurisdiction (such

as the municipal building department, re department,

etc.) should be contacted before installation to deter-

mine the need to obtain a permit.

RESIDENTIAL AND OUTDOOR WOODBURNING FIREPLACE

OWNER’S OPERATION AND INSTALLATION MANUAL

MODELS S36, S36H, S36R, S36RH, VS36(1) AND VS36H(1)

www.desatech.com 111026-01C2

WARNING: Improper installation, adjustment, altera-

tion, service or maintenance can cause injury, property

damage or loss of life. Refer to this manual for assis-

tance or additional information. Consult a qualied

installer or local distributor.

TABLE OF CONTENTS

Safety Information ............................................... 2

Specications ...................................................... 3

Fireplace Installation............................................ 4

Venting Installation .............................................. 6

Optional Gas Line Installation.............................11

Operation and Maintenance Guidelines ............ 12

Technical Service............................................... 13

Illustrated Parts Breakdown and Parts List........ 14

Replacement Parts............................................ 16

Accessories ....................................................... 16

SAFETY INFORMATION

IMPORTANT: Check local codes

before installing this replace.

Before beginning the installation of the replace,

read these instructions through completely.

• This DESA replace and its components are

safe when installed according to this installation

manual. Unless you use DESA components,

which have been designed and tested for the

replace system, you may cause a re hazard.

• The DESA warranty will be voided by and

DESA disclaims any responsibility for the

following actions.

a. Modication of the replace, components,

doors, air inlet system and damper control.

b. Use of any component part not manufac-

tured or approved by DESA in combination

with a DESA 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.

WARNING: Do not install a

replace insert in this box unless

the manufacturer's instructions

with the insert specically state

this replace has been tested for

use with this insert.

FOR YOUR SAFETY

• Do not store or use gasoline

or any other ammable vapors

or liquids in the vicinity of this

or any other appliance.

• Due to high temperatures, the

appliance should be located

out of trafc and away from

furniture and draperies.

• Do not place clothing or other

ammable materials on or near

the appliance.

• Never leave children unat-

tended when a re is burning

in the replace.

WARNING: Use solid wood

or processed solid fuel relogs

only. When processed wood fuel

re logs are used, do not poke or

stir the logs while they are burn-

ing. Use only re logs that have

beenevaluatedfortheapplication

in replace and refer to re log

warnings and caution markings

on packaging prior to use.

This replace is not intended to be

used as a substitute for a furnace

to heat an entire home. Use for

supplemental heat only.

www.desatech.com

111026-01C 3

SPECIFICATIONS

0" TO

BOTTOM

(LEFT SIDE ONLY)

OUTSIDE AIR

TOP SPACERS

BACK AND SIDES

3/4" AIR SPACE

HEARTH EXTENSION

66" X 20"

TO PERPENDICULAR

12"

EACH SIDE

NOT LESS

THAN 12"

1" AIRSPACE

TO COMBUSTIBLE

COMBUSTIBLE

WALL BOARD

0" TO MATERIAL

NO COMBUSTIBLE

MATERIAL ON FACE

SIDEWALL

TERMINATION

SQUARE CHASE-TOP

GAS LINE

KNOCK OUT

AIR KIT

KNOCK OUTS

ROUND TOP TERMINATION

GAS LINE

KNOCK OUTS

ELECTRICAL

OUTLET

LEFT SIDE

RIGHT SIDE

8.125"

10.435"

14.437"

41.25"

37"

41"

35"

21"

32.5"

14.25"

22"

2.5"

8.717"

11.217"

2.5" 8.125"

7.092"

8.717"

12.5"

41"

0.625"

29"

www.desatech.com 111026-01C4

FIREPLACE INSTALLATION

SELECTING LOCATION

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 clearances

(see Figures 1 and 2).

2. Consider a location where the replace will

not be affected by drafts, air conditioning

ducts, windows or doors.

3. A location that avoids the 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).

MINIMUM CLEARANCE TO

COMBUSTIBLES

Back and sides of replace 3/4" minimum*

Floor** 0" minimum

Perpendicular wall to opening 12" minimum

Top spacers 0" minimum

Mantel clearances

see Mantels, page 5

Chimney outer pipe surface 1" minimum

* Not required at nailing anges

** See step 2 of Framing

WARNING: Do not pack re-

quired air spaces with insulation

or other materials.

Minimum/Maximum Chimney Height for

Residential Installation

The minimum height of the chimney, measured

from the base of the replace to the ue gas outlet

of the termination, is 14.5 feet for straight ue or

a ue with one elbow set. The maximum distance

between elbows is 6 feet. For systems with two

elbow sets, the minimum height is 22 feet. The

maximum height of any system is 50 feet. This

measurement includes the replace, chimney sec-

tions and the height of the termination assembly

at the level of the ue gas outlet (see Figure 18,

page 11).

Minimum/Maximum Chimney Height for

Outdoor Installation

The minimum height of the chimney, measured

from the base of the replace to the ue gas outlet

of the termination, is 7 1/2 feet (minimum of 4 feet

of chimney pipe sections required for outdoor

installation).

FRAMING

1. Frame the opening for the replace using the

dimensions shown in Figures 1 and 2.

2. If the replace is to be installed directly on

carpeting, tile (other than ceramic) or any

combustible material other than wood oor-

ing, the replace must be installed upon a

metal or wood panel extending the full width

and depth of the replace.

3. Set the replace directly in front of this open-

ing and slide the unit back until the nailing

anges touch the side framing.

4. Check the level of the replace and shim with

sheet metal if necessary.

5. Before securing replace to prepared fram-

ing, the ember protector (provided) must

be placed between the hearth extension (not

supplied) and under the bottom front edge

of the replace to protect against glowing

embers falling through. If the replace is to be

installed on a raised platform, a Z-type ember

protector (not supplied) must be fabricated to

t your required platform height. The ember

protector should extend under the replace a

minimum of 1 1/2". The ember protector should

be made of galvanized sheet metal (28 gauge

minimum) to prevent corrosion.

6. Using screws or nails, secure the replace to

the framing through anges located on the

sides of the replace.

21.875”

41.375”

41.250”

Figure 1 - Framing Dimensions

52.183"

17.253"

24.399"

73.798"

MAINTAIN 3/4"

CLEARANCE AT

SIDES AND BACK

OF FIREPLACE

3/4" CLEARANCE

NOT REQUIRED AT

NAILING FLANGES

Figure 2 - Corner Installation

www.desatech.com

111026-01C 5

DRAIN PAN (DP36)

For outdoor installations, the replace enclosure

must allow for adequate drainage and fresh air

ventilation. It is recommended that a sealed, corro-

sion resistant catch pan with provision for drainage

be installed under the replace within the replace

enclosure (see Accessories on page 16).

HEARTH ExTENSION

A hearth extension projecting a minimum of 16"

in front of and a minimum of 8" beyond each

side of the replace opening is required to protect

combustible oor construction in front of the re-

place. Fabricate a hearth extension using a material

which meets the following specications: a layer

of noncombustible, inorganic material having a

thermal conductivity 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 the manufacturer or supplier of the

noncombustible material. If the hearth extension

is to be covered, use noncombustible material such

as tile, slate, brick, concrete, metal, glass, marble,

stone, etc. Provide a means to prevent the hearth

extension from shifting and seal gap between the

replace frame and hearth extension with a non-

combustible material (see Figure 3).

WARNING: Hearth extension

is to be installed only as shown

in Figure 3.

FIREPLACE INSTALLATION

Continued

Figure 3 - Hearth Extension

Seal Gap

Fireplace Front

Ember Protector

Fireplace Front

Raised Hearth

Fireplace Front

Elevated

Ember Protector

Seal Gap

Hearth

Extension

MANTELS

A mantel may be installed if desired (see Figure

4). Woodwork such as wood trims, mantels or

any other combustible material projecting from

the front face must not be placed within 12" of

the fireplace opening. Combustible materials

above 12" and projecting more than 11/2" from the

replace must not be placed less than 15" 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 the side edge of the black metal

face of the replace just as long as the projection

from the front face fall within the limit shown in

Figure 4.

12 1/4" Ref.

Ref.

12" Min.

9" Min.

11/2" Max.

3" Nom.

33°

Combustible

Material

Safe

Zone for

Projection of

Combustible

Materials

Fireplace

Opening

Upper

Section of

Fireplace

Figure 4 - Mantel Clearances to

Combustible Material

FIREBOX

SAFE ZONE

Top View of Fireplace

2" Max.

3.0"

Min. to

Perpendicular

Side Wall

12"

8.0"

33°

Combustible

Material Must

Not Overlap

Front Face

www.desatech.com 111026-01C6

Figure 6 - Lineal Gain

LINEAL GAIN

PART NO. DESCRIPTION GAIN

36" Fireplace 40

12-8DM

12-8HT Pipe Section 10 5/8

18-8DM

18-8HT Pipe Section 16 5/8

24-8DM

24-8HT Pipe Section 23 5/8

36-8DM

36-8HT Pipe Section 34 5/8

48-8DM

48-8HT Pipe Section 46 5/8

RT-8DM Round Termination 6 7/8

RTL-8DM Round Termination 7 3/4

RTT-8DM Round Termination

with Slip Section

6 7/8

" to

23 1/8"*

RTTL-8DM Round Termination

with Slip Section

8 1/2

" to

21 1/2"*

ET-8DM Square Chase-Top 12

ETO-8DM Square Chase-Top

with Mesh 12

ETL-8DM Square Chase-Top

with Slip Section 7" to 15"*

ETLO-8DM

Square Chase-Top

with Mesh & Slip

Section

25 1/2"

* The lineal gain for the terminations is mea-

sured to the ue gas outlet height.

Hemmed

End

12 3/8"

Stainless

Inner Pipe

12" Galvanized

Outer Pipe

ASSEMBLY AND INSTALLATION OF

DOUBLE WALL CHIMNEY SYSTEM

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 as-

sembled 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 the ue pipe section with the

hemmed end up. Press down on each pipe section

until the lances securely engage the hem on the re-

place starter. The wire will assure the proper spacing

between the inner and outer pipe sections.

VENTING INSTALLATION

OPTIONAL OUTSIDE AIR KIT

(MODEL AK4/AK4F)

The installation of an outside air kit should be per-

formed during the rough framing of the replace

due to the nature of it's location. Outside combus-

tion air is accessed through a vented crawl space

(AK4F) or through a sidewall (AK4).

CAUTION: Combustion air

inlet ducts shall not terminate

in attic space.

Figure 5 - 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)

CHIMNEY PIPE

The DESA 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

consideration (lineal gain) and are given in the

lineal gain chart (see Figure 6). Lineal gain is the

actual measurable length of a part after two or more

parts are connected. For Canada, use chimney parts

designated "HT".

WARNING: The opening in the

collar around the chimney at the

top of the replace must not be

obstructed.Neveruseblowninsula-

tion to ll the chimney enclosure.

www.desatech.com

111026-01C 7

VENTING INSTALLATION

Continued

Continue to assemble chimney sections as outlined,

making sure that both the inner and outer pipe sec-

tions are locked together. 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 if prop-

erly locked. It is not necessary to add screws to

keep the chimney together (exception - see Figure

9, page 8).

USING ELBOW OFFSETS (30E-8DM)

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 7).

Chimney weight above offset rests on return

elbow. Straps must be securely nailed to rafters

or joists (see Figure 8, details a & b on page 8).

3. Maximum length of pipe between supports

(return elbow or 12S-8DM) is 6' of angle run.

Maximum of two 6' angle run sections per

chimney system (see Figure 7).

4. All pipe connections between the offset and

return must be secured with two screws on the

outer pipe only (see Figure 9, page 8). Do not

penetrate the inner stainless.

OFFSET

RISE CHIMNEY LENGTH

A B 48" 36" 24" 18" 12"

4 3/8" 16 3/8"

ELBOW SET ONLY

9 3/4" 25 1/2"

12 3/4" 30 3/4"

15" 34 3/4"

18" 40"

1 1

21 1/4" 46 1/4"

23 3/4" 49 1/4"

1 1

27 3/4" 56 3/4"

30" 60 3/4"

1 1

33" 66"

1 1

36" 71"

1 1

38 1/4" 75"

41 1/4" 80 1/4"

1 1 1

45" 86 3/4"

46 3/4" 89 1/2"

1 1 1

51" 97"

1 1

53 1/4" 101"

2 1

56 1/4" 106 1/4"

59 1/4" 111 1/2"

1 1 1

61 3/4" 115 1/2"

2 1

64 3/4" 120 3/4"

2 1

68 1/4" 127"

1 2

70" 130"

2 1 1

74 1/4" 137 1/2"

1 2 1

76 3/4" 141 1/2"

1 2 1

79 3/4" 146 3/4"

OFFSET CHART (22-50 FT. SYSTEM HEIGHT)

Figure 7 - Typical Offset Terminations

Return

Elbow

Offset

Elbow

Return

Elbow

Offset

Elbow

6' Max.

Return

Elbow

Offset

Elbow

Offset

Elbow

Return

Elbow

A B C

Offset

Elbow

Ceiling

Support Pipe

12S-8DM

Return

Elbow

www.desatech.com 111026-01C8

VENTING INSTALLATION

Continued

Figure 9 - Elbow Offset

Screws

FIRESTOP SPACERS (V3600FS-8DM)

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 10.

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 11.

Figure 10 - Firestop Spacer with Living

Space Above Ceiling

Figure 11 - 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)

PENETRATING THE ROOF

To maintain a 1" clearance to the pipe on a roof

with a pitch, a rectangular opening must be cut.

1. Determine the center point through which the

pipe will penetrate the roof.

2. Determine the center point of the roof. Pitch

is the distance the roof drops over a given

span, usually 12". A 6/12 pitch means that

the roof drops 6" for each 12" one measure

horizontally down from the roof rafters.

3. Use the roof opening chart (Figure 12, page

9) to determine the correct opening length and

ashing required.

4. Remove the shingles around the opening

measured. Cut out this section.

5. Add the next sections of the pipe until the

end penetrates the roof line. Check to see that

the proper clearances are maintained. Extend

chimney by adding sections of double wall

pipe until pipe is minimum of 30" above the

highest point of the roof cutout. Termination

and chimney must extend a minimum of

36" above the highest point where it passes

through the roof.

Existing

Ceiling

Frame

Figure 8 - Ceiling Support Pipe

12S-8DM

2" Min.

Straps

Detail A

Return Elbow

Detail B

Angle Firestop

See Detail A

See Detail B

www.desatech.com

111026-01C 9

VENTING INSTALLATION

Continued

14 3/8" Min.

(365 mm) 30" Min.

(762 mm)

1" Min.

(25 mm)

1" Min.

(25 mm)

1" Min.

(25 mm)

Opening "A"

Pitch Slope Opening "A"

Max.

Used Flashing

Model No.

Flat 0° 15" V6F-8DM

0-6/12 26.6° 16 1/8" V6F-8DM

6/12-

12/12 45.0° 20 3/8" V12F-8DM

FLASHING INSTALLATION (V6F-8DM

OR V12F-8DM)

Determine the ashing to be used with the roof

opening chart. Slide ashing over pipe until base

is at against roof. Replace as many shingles as

needed to cover exposed area and ashing base.

Secure in position by nailing through shingles

(see Figure 13). DO NOT NAIL THROUGH

FLASHING CONE.

Installing Flashing on a Metal Roof

When installing the ashing on a metal roof, it is

required that putty tape be used between the ashing

and the roof. The ashing must be secured to the roof

using #8 x 3/4" screws and then sealed with roof coat-

ing to prevent leakage through the screw holes. A roof

coating must also be applied around the perimeter of

the ashing to provide a proper seal.

Figure 12 - Roof Opening Measurements

Nail Only

Outer

Perimeter

of Flashing

Storm Collar

Flashing

Cone

Underlap Shingles

at Bottom

Overlap

Shingles Top

and Sides Only

Figure 13 - Flashing Installation

Storm Collar Installation (SC1 or SC2)

Place storm collar over pipe and slide down until

it is snug against the open edge of the ashing (see

Figure 14). Use SC1 for all round terminations and

SC2 for all terminations with slip sections. Apply

waterproof caulk around the perimeter of the collar

to provide a proper seal.

Figure 14 - Storm Collar

Chimney

Pipe

Waterproof

Caulk

Storm

Collar Flashing

Terminations/Spark Arrestor

The replace system must be terminated with the

listed round top or chase terminations. In any case,

refer to the installation instructions supplied with

the termination. The termination approved for this

replace are the RT-8DM and RTL-8DM that can

be used for ashing or chase and ET-8DM, ETO-

8DM, ETL-8DM and ETLO-8DM for chase style

termination only. Figure 15 shows an RTL-8DM

round top termination.

CAUTION: Do not seal open-

ings on the rooftop ashing. Fol-

low the installation instructions

provided with the termination

being used.

Attach Bracket

Tabs to

Outer Pipe

(3 Places)

Secure with

Screws

RTL-8D

Level of

Flue Gas

Outlet

Caulk

Collar

Flashing

Underlap

Shingles

Bottom Only

Figure 15 - Termination

Overlap

Shingles Top

and Sides

www.desatech.com 111026-01C10

Terminations with 16" slip pipe sections are avail-

able. The RTT-8DM and RTTL-8DM are approved

for ashing installations. When needed, these

adjustable terminations may be used in combina-

tion with the pipe assembly to achieve the correct

chimney height.

Note: In the rare instance there is a problem with

the side driven rain or wind or the chimney is

not drafting properly, an ADS-8DM (Anti-Draft

Shield) can be used with round terminations.

CHASE INSTALLATIONS

Instructions for chase installations are included

with the chase style termination chosen. In a

multiple chase installation, be sure to provide

adequate distance between terminations to prevent

smoke spillage from one termination to another.

We suggest that terminations be separated at least

24", center to center and stacked at a vertical height

difference of 18" (see Figure 16).

Note: If a decorative shroud is to be installed,

contact the manufacturer for specications.

10 FOOT RULE

All ue gas outlet chimney terminations must

extend a minimum of 3 feet in height above the

highest point where it passes through the roof and

must be at least 2 feet above the highest point of

the roof that is within a horizontal distance of 10

feet (see Figure 17).

24" Min.

18"

Min.

Typ.

Figure 16 - Multiple Chase Installation

10'

2' Min.

10'

3' Min.

2' Min. 3' Min.

Level of

Flue Gas

Outlet

Figure 17 - 10 Foot Rule

FINISHING THE FIREPLACE

Combustible materials, such as wallboard, gypsum

board, sheet rock, drywall, plywood, etc. may make

direct contact with sides and top around the replace

face. It is important that combustible materials do

not overlap the face itself. Brick, glass, tile or other

noncombustible materials may overlap the front

face provided they do not obstruct essential open-

ings like louvered slots or any other opening. When

overlapping with a noncombustible facing material,

use only noncombustible mortar or adhesive.

VENTING INSTALLATION

Continued

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