Desa B36, VB36, VB36I, B36I, VB36L Installation Instructions Manual

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(V)B36 36” smooth face

(V)B36I 36” smooth face with insulatio

(V)B36L, CWB36C 36” circulating

(V)B36LI 36” circulating with insulatio

INSTALLATION INSTRUCTIONS

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
replacement parts or accessory items when needed.
Keep it with your other important papers.

LL DIMENSIONS IN THIS MANUAL ARE IN

NCHES UNLESS OTHERWISE SPECIFIED

SAVE THIS BOOK

WARNING: Always leave glass doors fully opened or fully closed when operating this fireplace.

DESA

2701 INDUSTRIAL DRIVE P/N 109034-01
P.O. BOX 90024 REV E
BOWLING GREEN, KY 42101-9004 9/03

www.desatech.com

OMNI Test Laboratories

This fireplace is approved for use as a wood burning fireplace or fo
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 gas log heater (see Accessories, p. 12).

ICBO # ER-3507

CONTENTS

1. INTRODUCTION ------------------------------------------------------------- PG. 2

2. SELECTING LOCATION ------------------------------------------------------------- PG. 2

3. MINIMUM CLEARANCES ------------------------------------------------------------- PG. 2

4. FRAMING AND INSTALLING ------------------------------------------------------------- PG. 3

5. HEARTH EXTENSION ------------------------------------------------------------- PG. 3

6. OUTSIDE AIR KIT INSTALLATION ------------------------------------------------------------- PG. 3

7. FAN/BLOWER KIT ASSEMBLY ------------------------------------------------------------- PG. 4

8. CHIMNEY PIPE AND OFFSET INSTALLATION ------------------------------------------------------------- PG. 4-5

9. FIRESTOP SPACERS ------------------------------------------------------------- PG. 5

10. FLASHING AND TERMINATION ------------------------------------------------------------- PG. 6-7

11. FINISHING YOUR FIREPLACE ------------------------------------------------------------- PG. 7

12. MANTELS ------------------------------------------------------------- PG. 8

13. GLASS DOORS ------------------------------------------------------------- PG. 8

14. GAS LINE INSTALLATIONS ------------------------------------------------------------- PG. 9

15. DAMPER OPERATION ------------------------------------------------------------- PG. 10

16. TECHNICAL SERVICE ------------------------------------------------------------- PG. 10

17. ILLUSTRATED PARTS ------------------------------------------------------------- PG.11-11a

18. REPLACEMENT AND ACCESSORY PARTS ------------------------------------------------------------- PG.12

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• Do not store or use gasoline or any other flammable
vapors or liquids in the vicinity of this or any othe
appliance.

• Due to high temperatures, the appliance should be
located out of traffic and away from furniture an
draperies.

• Do not place clothing or other flammable materials o
or near the appliance.

• NEVER leave children unattended when a fire is
burning in the fireplace.

FOR YOUR SAFETY

WARNING: Improper installation, adjustment,

alteration, service or maintenance can cause injury,

roperty damage, or loss of life. Refer to this manual fo
assistance or additional information. Consult a qualifie
installer or local distributor.

CHECK LOCAL CODES BEFORE
INSTALLING THIS FIREPLACE.

INTRODUCTION

BEFORE BEGINNING THE INSTALLATION OF THE
FIREPLACE, READ THESE INSTRUCTIONS THROUGH,
COMPLETELY.

♦ This DESA fireplace and its components are safe

when installed according to this installation manual.
Unless you use DESA components, which has been
designed and tested for the fireplace system, you may
cause a fire hazard.

♦ The DESA warranty will be voided by and DESA

disclaims any responsibility for the following actions:

a) Modification of the fireplace, components, doors,
blower, fans, air inlet system and damper control.
b) Use of any component part not manufactured or
approved by DESA in combination with a DESA
fireplace system.

PROPER INSTALLATION is the most important step in
ensuring safe and continuous operation of the fireplace.
Consult the local building codes as to the particular
requirements concerned with the installation of all factory
built fireplaces. Although grounding may not be required by
code the manufacturer recommends it.

WARNING: Do not install a fireplace insert in this
box unless the manufacturers instructions with the inser
specifically state this fireplace has been tested for use
with the insert.

USE SOLID WOOD OR PROCESSED SOLID FUEL

FIRELOGS ONLY.

WARNING: When processed wood fuel fire logs

are used, do not poke or stir the logs while they are

urning. Use only fire logs that have been evaluated fo
the application in fireplace and refer to fire log warnings
and caution markings on packaging prior to use.

This fireplace is not intended to be used as a substitute for
a furnace to heat an entire home. Use for supplemental
heat only.

This wood-burning fireplace complies with UL 127­CAN/ULS-S610-M87 standard as a FACTORY BUILT

FIREPLACE.

FOR CANADA: The authority having jurisdiction (suc
as the municipal building department, fire department,
etc.) should be contacted before installation to determine
the need to obtain a permit.

SELECTING LOCATION

To determine the safest and most efficient location for the
fireplace, you must take into consideration the following
guidelines:

1.) The location must allow for proper clearances (see
figures 1 & 2).

2.) Consider a location were the fireplace would 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 fireplace. For
more details refer to section on outside air kit
installation on page 3.

MINIMUM CLEARANCES TO COMBUSTIBLES

• Back and side of fireplace -------------- ¾” minimum
Note: The ¾” clearance is not required at the nailing flanges

• Floor* ------------------------------------- 0” minimum
*See step 2 of “Installing the Fireplace” on page 3

• Perpendicular Wall to Opening of unit - 14” minimum

• Top Spacers ------------------------------ 0” minimum

• Mantel Clearances ---------------------- see page 8

“Mantels”

• Chimney Outer Pipe Surfaces --------- 1” minimum

WARNING: Do not pack required air spaces wit

insulation or other materials.

MINIMUM / MAXIMUM CHIMNEY HEIGHT

The minimum height of the chimney, measured from the base
of the fireplace to the flue gas outlet of the termination, is 11.5
feet for straight flue or a flue with one elbow set. The
maximum distance between elbows is 2 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 fireplace, chimney sections and the height of the
termination assembly at the level of the flue gas outlet (see
page 7, figure 15).

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FRAMING AND INSTALLING THE FIREPLACE

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STEP 1: Frame the opening for the fireplace using the
dimensions shown in figures 1 & 2.
STEP 2: If the fireplace is to be installed directly on carpeting,
tile (other than ceramic), or any combustible material other
than wood flooring, the fireplace must be installed upon a
metal or wood panel extending the full width and depth of the
fireplace.
STEP 3: Set the fireplace directly in front of this opening and
slide the unit back until the nailing flanges touch the side
framing.
STEP 4: Check the level of the fireplace and shim with sheet
metal if necessary. Make sure the unit is balanced on each
side.
STEP 5: Before securing fireplace to prepared framing, the
ember protector (provided), must be placed between the hearth
extension (not supplied), and under the bottom front edge of
the fireplace to protect against glowing embers falling
through. If the fireplace is to be installed on a raised platform,
a Z-type ember protector (not supplied) must be fabricated to
fit your required platform height. The ember protector should
extend under the fireplace a minimum of 1 - 1/2”. The ember
protector should be made of galvanized sheet metal (28-gage
minimum).
STEP 6: Using screws or nails, secure the fireplace to the
framing through flanges located on the sides of the fireplace.

Figure 1 FRAMING DIMENSION

Figure 2 CORNER INSTALLATION

HEARTH EXTENSION

A hearth extension projecting a minimum of 16” in front of
and a minimum of 8” beyond each side of the fireplace
opening is required to protect combustible floor construction
in front of the fireplace. Fabricate a hearth extension using a
material which meets the following specifications: a layer of
non-combustible, 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 fiber, 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 non-combustible material.
If the hearth extension is to be covered, use non-combustible
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 fireplace
frame and hearth extension with a non-combustible material
(see figure 3).

Figure 3 HEARTH EXTENSION

WARNING Hearth extension is to be installed onl

as illustrated.

OPTIONAL OUTSIDE AIR KIT (MODEL AK4 / AK4F)

The installation of an outside air kit should be performed
during the rough framing of the fireplace due to the nature of
its location. Outside combustion air is accessed through a
vented crawl space (AK4F) or through a sidewall (AK4). This
fireplace is equipped with a barometric damper, which allows
outside air to flow in the fireplace automatically when needed.

Figure 4 OUTSIDE AIR KIT

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FAN/BLOWER KIT ASSEMBLY

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Fan or blower kit is optional (for circulating models only) with
this fireplace. Use of blowers or fans other than manufactured
by DESA voids the warranty. Fan is operated by pressing the
rocker switch (see figure 5a) in the lower right hand corner of
the fireplace face. Blower is operated by turning the control
knob (not shown).
Fan/blower kit electrical connections are made through the
electrical cover plate on the side of the fireplace as shown in
figure 5a.

Figure 5a FAN SWITCH-ELECTRICAL BUSHING

WIRING INSTRUCTIONS

i. Remove electrical cover plate (with electrical

bushing) from the fireplace by removing the two
sheet metal screws as shown in figure 5a.

ii. Slide power source wiring through the electrical

bushing opening and electrical cover plate and make
all the necessary connections.

iii. Slide all wiring connections in the electrical housing

as shown in figure 5b.

iv. Secure the electrical cover plate with screws

previously removed.
NOTE: Electrical housing and cover plate have sharp edges,
wear protective gloves.

Fi

ure 5b ELECTRICAL HOUSING

CHIMNEY PIPE

The DESA chimney system consists of 12, 18, 24, 36 and 48
inch, snap-lock double-wall pipe segments, planned for
maximum adaptability to individual site requirements. Actual
lengths gained after fitting overlaps must be taken into
consideration (lineal gain) and are given in the lineal gain
chart (see figure 6).

ASSEMBLY AND INSTALLATION OF THE DOUBLE

WALL CHIMNEY SYSTEM

Each double wall chimney section is consist of a galvanized
outer pipe, a stainless steel inner flue pipe and a wire spacer.
The pipe sections must be assembled independently as the
chimney is installed. When connecting chimney directly to
the fireplace, the inner flue pipe section must be installed first
with the lanced side up. The outer pipe section can then be
installed over the flue pipe section with the hemmed end up.
Press down on each pipe section until the lances securely
engage the hem on the fireplace starter. The wire will assure
the proper spacing between the inner and outer pipe sections.

Figure 6 LINEAL GAIN

For Canada, use chimney parts designated “HT”

WARNING: The opening in the collar around the

chimney at the top of the fireplace must not be obstructed.

ever use blown insulation to fill the chimney enclosure.

Continue to assemble chimney sections as outlined above,
making sure that both the inner and outer pipe sections 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
properly locked. It is not necessary to add screws to keep the
chimney together (exception – see page 5 figure 9).

INSTRUCTIONS WHEN ELBOW OFFSET (30E-8DM)

OF CHIMNEY IS NEEDED

1. To achieve desired offset, you may install combinations of
12”, 18”, 24”, 36” and 48” length of double wall pipe (SEE
SINGLE OFFSET CHARTAND FIGURE 7).

2. Chimney weight above offset rests on return elbow.
Straps must be securely nailed to rafters or joists (see figure 8,
details a & b).

3. Maximum length of pipe between supports (return elbow
or 12S-8DM) is 6’ of angle run. Maximum of two (2) 6’ angle
run sections per chimney system (see figure 7).

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