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A gas line or gas log lighter may be installed for the purpose 
of installing a vented or vent-free decorative gas appliance 
incorporating an automatic shutoff device and complying with 
the Standard for Decorative Gas Appliances for Installation in 
Vented Fireplaces, ANSI Z21.60 or American Gas 
Association draft requirements for Gas-Fired Log Lighters for 
Wood Burning Fireplaces, Draft No. 4 dated August, 1993.   
 
IF YOU WISH TO INSTALL AN UNVENTED (VENT-
FREE) GAS LOG SET, ONLY UNVENTED GAS LOG 
SETS, WHICH HAVE BEEN FOUND TO COMPLY WITH 
THE STANDARD FOR UNVENTED ROOM HEATERS, 
ANSI Z21.11.2, ARE TO BE INSTALLED IN THIS 
FIREPLACE. 
 

OPTIONAL GAS LINE INSTALLATION 
 

Gas line hook up should be done by your supplier or a 
qualified service person. 

NOTE:

 Before you proceed, make sure your gas supply is 

turned off. 
Use only a ½ inch black iron pipe and appropriate fittings.  
STEP 1: To install, remove the knockout indentation on the 
refractory, (or firebrick), wall located above the refractory 
hearth floor.  The knockout indentation must be firmly tapped 
with any solid object until it is released.  Remove fragmented 
portions of refractory (see figure 19). 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
STEP 2: Remove gas line cover plate located on either side of 
fireplace and pull out insulation from gas line conduit sleeve.  
Save insulation for reuse. 
 
STEP 3: Run a ½ inch black iron gas line into the fireplace 
through the rear at gas line conduit sleeve (if using a raised 
platform, add height).  Provide sufficient gas line into 
fireplace chamber for fitting connection (see figure 20). 
 
NOTE: Secure incoming gas line to wood framing to provide 
rigidity for threaded end. 
 
STEP 4: Repack insulation around gas line and into sleeve 
opening.  Seal any gaps between gas line and refractory 
knockout hole with refractory cement or commercial furnace 
cement.  Install the gas appliance or cap-off gas line if desired. 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

NOTE: A DESA hood must be installed when using an 
unvented gas log set 

(see accessories on page 12). 

 
 
 
 
 
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 Fireplaces, ANS Z21.60, Z21.84 or RGA 2-72,

 and 

shall also be installed in accordance with the 

National Fuel 

Gas Code, ANS Z223.1-NFPA 54 latest edition. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

CAUTION:

All gas piping and connections must be tested

for leaks after the installation is completed.  After ensuring
that the gas valve is on, apply soap and water solution to
all connections and joints.  Bubbles forming show a leak.
Correct all leaks at once.  DO NOT USE AN OPEN
FLAME FOR LEAK TESTING AND DO NOT
OPERATE ANY APPLIANCE IF A LEAK IS
DETECTED.  LEAK TESTING SHOULD BE DONE BY
A QUALIFIED SERVICE PERSON. 

WARNING

: Do not operate an unvented gas log set in

this fireplace with the chimney removed. 

WARNING

: If the fireplace has been used for wood

burning, the firebox and chimney must be cleaned of soot,
creosote and ashes by a qualified chimney cleaner.
Creosote will ignite if highly heated. 

WARNING

: When using a decorative vented gas log,

the damper must be removed or permanently locked in the
fully open position and the glass doors must be in the fully
open position. 

 

Figure 19         GAS LINE KNOCKOUT 

 

Figure 20         GAS LINE INSTALLATION 

WARNING

: To avoid the risk of damaging the

fireplace materials and increasing the risk of spreading a
fire, do not use the fireplace to cook or warm food. 

Summary of Contents for VS42 Series

Page 1: ... 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 WARNING Always leave glass doors fully opened or fully closed when operating this fireplace S42 42 textured white refractory brick S42H 42 textured white herringbone refractory brick S42R 42 textured red refractory...

Page 2: ...TION PG 3 6 OUTSIDE AIR KIT INSTALLATION PG 3 7 CHIMNEY PIPE AND OFFSET INSTALLATION PG 4 5 8 FIRESTOP SPACERS PG 5 9 FLASHING AND TERMINATION PG 6 7 10 FINISHING YOUR FIREPLACE PG 7 11 MANTELS PG 8 12 GLASS DOORS PG 8 13 GAS LINE INSTALLATIONS PG 9 14 DAMPER OPERATION PG 10 15 TECHNICAL SERVICE PG 10 16 ILLUSTRATED PARTS PG 11 11a 17 REPLACEMENT AND TECHNICAL PARTS PG 12 ...

Page 3: ...TIAL INSTALLATION The minimum height of the chimney measured from the base of the fireplace to the flue gas outlet of the termination is 14 5 feet for straight flue or a flue 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 fireplace chimney sectio...

Page 4: ...rough flanges located on the sides of the fireplace 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...

Page 5: ...dependently as the chimney is installed When connecting chimney directly to For Canada use chimney parts designated HT 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 starte...

Page 6: ...re 9 They also provide complete separation from one floor 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 firestop must be placed into an attic floor as shown in figure 10 OFFSET RISE A B 48 36 24 18 12 4 3 8 16 3 8 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 ...

Page 7: ...LASHING INSTALLATION V6F 8DM or V12F 8DM Determine the flashing to be used with the roof opening chart Slide flashing over pipe until base is flat against roof Replace as many shingles as needed to cover exposed area and flashing 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 flashing on a ...

Page 8: ... prevent smoke spillage from one termination to another We suggest that terminations be separated at least 24 inches center to center and stacked at vertical height difference of 18 inches see figure 15 NOTE If a decorative shroud is to be installed contact the manufacturer for specifications 10 FOOT RULE All flue gas outlet of chimney termination must extend a minimum of 3 feet in height above th...

Page 9: ...he combustion air gate is not completely open The following tips should be followed to assure that both the fireplace and the glass door retain their beauty and function properly Both the flue damper and the glass doors must be fully opened before starting the fire This will provide sufficient combustion air and maintain safe temperatures in the firebox IMPORTANT The glass must be allowed to warm ...

Page 10: ...framing to provide rigidity for threaded end STEP 4 Repack insulation around gas line and into sleeve opening Seal any gaps between gas line and refractory knockout hole with refractory cement or commercial furnace cement Install the gas appliance or cap off gas line if desired NOTE A DESA hood must be installed when using an unvented gas log set see accessories on page 12 If you install a decorat...

Page 11: ...gure 21 Pulling the handle out will free the outside air door to open Pushing the handle in will lock the door close FOR FURTHER OPERATING GUIDELINES INSTRUCTIONS AND WARRANTY INFORMATION PLEASE REFER TO YOUR HOMEOWNERS GUIDE OR CONTACT YOUR AUTHORIZED DEALER TECHNICAL SERVICE You may have questions about installation operations or troubleshooting If so contact the Technical Service Department at ...

Page 12: ...7839 01 107839 01 107839 01 18 FIREBOX TOP ASSEMBLY 1 106694 02 106694 02 106694 02 106694 02 106694 02 106694 02 19 AIR KIT DOOR ASSEMBLY 1 106703 01 106703 01 106703 01 106703 01 106703 01 106703 01 20 FACE WELDMENT 1 111093 01 111093 01 111093 01 111093 01 111093 01 111093 01 21 AIR DEFLECTOR 1 110892 02 110892 02 110892 02 110892 02 110892 02 110892 02 22 FIREPLACE TOP INSULATION 1 107824 01 1...

Page 13: ... 11a For more information visit www desatech com ILLUSTRATED PARTS ...

Page 14: ... 12 For more information visit www desatech com REPLACEMENT PARTS ACCESSORY PARTS SEE PARTS LIST ON PAGE 11 FOR PART NUMBERS ...

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