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MINIMUM CLEARANCES TO COMBUSTIBLES: 

 

 

Back and sides of fireplace …………………….. ¾” min. 

 

Top spacers ……………………………………..  0” min. 

 

Perpendicular side wall to opening of unit ……. 18” min. 

 

Wall to front of fireplace ………………………  36” min. 

 

Bottom of fireplace to floor 
(see step 2 under installing a fireplace) ………....  0” min. 

 

Mantel clearances …………………………   see page 10 

 

Chimney outer pipe surfaces ………………….     2” min. 

 

Chase inside dimension ……………………  16-1/2” min. 

 
 

 
 
 

INSTALLING THE FIREPLACE: 

 
STEP 1: Frame the opening for the fireplace using the 
dimensions shown in figures 2 & 3. 
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. 
STEP 5: Before securing fireplace to prepared framing, the 
ember protector (provided), must be placed between hearth 
extensions (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”.  The ember 
protector should be made of galvanized sheet metal (28 Ga. 
minimum) to prevent corrosion (see figure 5). 
STEP 6: Secure the fireplace to the framing through flanges 
located on the sides of the fireplace (see figure 4). 
 

Figure 1     TYPICAL FIREPLACE LOCATIONS 

 WARNING:

 Do not pack air spaces with insulation or 

any other material.  Do not obstruct fireplace openings (ie. 
louvers, etc.) with any type of facing material. 
Combustible material must not be in contact with the back 
front face of the fireplace. 

Figure 3   CORNER FRAMING DIMENSIONS 

Figure 2              FRAMING DIMENSIONS 

Figure 4              NAILING FLANGES 

Summary of Contents for 42C

Page 1: ...ndard A DESA hood must be installed when using a vent free gas log set See accessories on pg 11 WARNING ALWAYS LEAVE GLASS DOORS FULLY OPENED OR FULLY CLOSED WHEN OPERATING THIS FIREPLACE DESA INTERNATIONAL 2701 INDUSTRIAL DRIVE P O BOX 90024 BOWLING GREEN KY 42102 9004 www desatech com PN 54016 REV B 10 00 SAVE THIS BOOK This book is valuable In addition to instructing you on how to install your ...

Page 2: ...ALLING THE FIREPLACE PG 3 8 HEARTH EXTENSION PG 4 9 OUTSIDE AIR KIT PG 4 10 GAS LINE INSTALLATION PG 4 11 VENT FREE GAS LOG INSTALLATION PG 5 12 COLD CLIMATE INSTALLATIONS PG 5 13 CHIMNEY PIPE PG 6 7 14 PENETRATING THE ROOF PG 8 15 FLASHING INSTALLATION PG 9 16 STORM COLLAR INSTALLATIONS PG 9 17 TERMINATIONS PG 9 18 FINISHING THE FIREPLACE PG 10 19 MANTEL CLEARANCES PG 10 17 REPLACEMENT AND ACCESS...

Page 3: ...ortant step in ensuring safe and continuous operation of this fireplace SELECTING LOCATION To determine the safest and most efficient location for your fireplace consider the following guidelines The location must allow for all proper clearances see page 3 The location should be in a place where the fireplace will not be affected by drafts such as air condition ducts windows or doors A location th...

Page 4: ...e level of the fireplace and shim with sheet metal if necessary STEP 5 Before securing fireplace to prepared framing the ember protector provided must be placed between hearth extensions 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 b...

Page 5: ...IT MODELS AK4 OR AK4F The outside air kit must be installed during the rough framing of the fireplace due to the nature of its location Outside combustion air can be accessed through an exterior wall Model AK4 or a vented crawl space Model AK4F See figure 6 and Accessories on page 11 Avoid installing outside air eyebrow in areas where inlet opening may be blocked by snow bushes or other obstacles ...

Page 6: ...t be installed when using an unvented gas log set see accessories on page 11 VENTED GAS LOG INSTALLATION If you install a decorative gas appliance vented gas log the decorative gas appliance must comply with the Standard for Decorative Gas Appliance for Installation in solid fuel burning fireplace ANS Z21 60 1996 Z21 84 or RGA 2 72 and shall also be installed in accordance with the National Fuel G...

Page 7: ...e wall pipe segments planned for maximum adaptability to individual site requirements Actual lengths gained lineal gain after fitting overlaps must be taken into consideration see figure 12 Each double wall chimney section consists 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 attach...

Page 8: ...as required by most codes When the double wall pipe passes through a framed opening into an attic space the firestop must be place into the attic floor as in figure 16 When the pipe passes through a framed opening into a living space above the firestop must be placed onto the ceiling from below as shown in figure 16 1 elbow set 16 to 60 ft system height 2 elbow sets 30 to 60 ft system height Figur...

Page 9: ...ure 19 to determine the correct opening length and flashing required STEP 4 Remove the shingles around the opening measured and cut out this section STEP 5 Add the next sections of the pipe until the end penetrates the roofline Check to see that the proper clearances are maintained Extend chimney by adding sections of double wall pipe until pipe is a minimum of 30 inches above the highest point of...

Page 10: ...lashing or chase and ETL 8DM for chase style termination only Figure 21 shows an RTL 8DM round top termination FOLLOW THE INSTALLATION INSTRUCTIONS PROVIDED WITH THE TERMINATION BEING USED 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...

Page 11: ...e placed at least 9 inches above the opening of the fireplace see figure 25 Combustible materials above 9 inches and projecting more than 1 inches from the front face of the fireplace must be place at least 12 inches above the fireplace opening Ref NFPA std 7 3 3 3 Mantels or any other combustible material may butt up to the side of the black metal face of the fireplace The clearances from the sid...

Page 12: ...n visit www desatech com Desa International 2701 Industrial Drive P O Box 90024 Bowling Green KY 42102 9004 www desatech com 800 323 5190 ACCESSORY PARTS REPLACEMENT PARTS CONTACT YOUR LOCAL DEALER CONTACT YOUR LOCAL DEALER ...

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