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For more information, visit www.desatech.com

 

 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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, 

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.   
 
 
 
 

 
 

USE SOLID WOOD OR PROCESSED SOLID FUEL 

FIRELOGS ONLY. 

 
 
 
 
 
 

This fireplace is not intended to be used as a substitute for 
a furnace to heat an entire home.  Use for supplemental 
heat only. 
 
 
 
 
 
 
 
 
 
 
 
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 5. 

 

MINIMUM CLEARANCES TO COMBUSTIBLES 
 

 

Back and side of fireplace -------------- 1-1/2” minimum

 

Note: The 1-1/2” clearance not required at the nailing flanges 
 

 

Front of fireplace ------------------------    48” minimum 

 

 

Floor* -------------------------------------    0” minimum

 

*See step 2 of  “Installing the Fireplace” on page 3

 

 

Perpendicular Wall to Opening of unit - 18” minimum

 

12” – GM36 

 

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

 

 

 

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

 

“Mantels”

 

 

 

Chimney Outer Pipe Surfaces ---------   2” minimum

 

1” – GM36 
 

 
 
 

 
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 16 
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 sections and the height of the 
termination assembly at the level of the flue gas outlet (see 
page 8, figure 14). 

FOR YOUR SAFETY 

 

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

 

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

 

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

 

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

WARNING:

 Improper installation, adjustment, 

alteration, service or maintenance can cause injury, 
property damage, or loss of life.  Refer to this manual for 
assistance or additional information.  Consult a qualified 
installer or local distributor. 

CHECK LOCAL CODES BEFORE 
INSTALLING THIS FIREPLACE. 

WARNING:

  Do not install a fireplace insert in this 

box unless the manufacturers instructions with the insert 
specifically state this fireplace has been tested for use 
with the insert. 

This wood burning fireplace complies with 

UL 127-

CAN/ULS-S610-M87

 standard as a FACTORY BUILT 

FIREPLACE.

WARNING: 

Do not pack required air spaces with 

insulation or other materials. 

FOR CANADA:

 The authority having jurisdiction (such 

as the municipal building department, fire department, 
etc.) should be contacted before installation to determine 
the need to obtain a permit. 

WARNING:

  When processed wood fuel fire logs 

are used, do not poke or stir the logs while they are 
burning.  Use only fire logs that have been evaluated for 
the application in fireplace and refer to fire log warnings 
and caution markings on packaging prior to use. 

Summary of Contents for (V)GM36

Page 1: ...lace 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 WARNING Always leave glass doors...

Page 2: ...LINEAL GAIN PG 6 8 CHIMNEY PIPE AND OFFSET INSTALLATION PG 6 7 9 FIRESTOP SPACERS PG 7 10 FLASHING AND TERMINATION PG 8 9 11 MANTEL CLEARANCE PG 9 10 12 FINISHING YOUR FIREPLACE PG 10 13 OPTIONAL GLA...

Page 3: ...1 For more information visit www desatech com SPECIFICATIONS 50 MODEL ALL DIMENSIONS IN THIS MANUAL ARE IN INCHES UNLESS OTHERWISE SPECIFIED...

Page 4: ...2 For more information visit www desatech com SPECIFICATIONS 42 MODEL ALL DIMENSIONS IN THIS MANUAL ARE IN INCHES UNLESS OTHERWISE SPECIFIED...

Page 5: ...3 For more information visit www desatech com SPECIFICATIONS 36 MODEL ALL DIMENSIONS IN THIS MANUAL ARE IN INCHES UNLESS OTHERWISE SPECIFIED...

Page 6: ...12 GM36 Top Spacers 0 minimum Mantel Clearances see page 8 Mantels Chimney Outer Pipe Surfaces 2 minimum 1 GM36 MINIMUM MAXIMUM CHIMNEY HEIGHT The minimum height of the chimney measured from the base...

Page 7: ...e of galvanized sheet metal 28 gage minimum to prevent corrosion STEP 6 Using screws or nails secure the fireplace to the framing through flanges located on the sides of the fireplace HEARTH EXTENSION...

Page 8: ...aking 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 lo...

Page 9: ...e 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...

Page 10: ...ing 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...

Page 11: ...d must be at least 2 feet above the highest point of the roof that is within a horizontal distance of 10 feet see figure 16 MANTELS A mantel may be installed if desired see figure 17 Woodwork such as...

Page 12: ...evenly The tempered glass will withstand a gradual temperature rise to 550 degrees Fahrenheit which is more than a normal fire will generate Such materials as pitch wax laden logs very dry mill end l...

Page 13: ...ement or commercial furnace cement Install the gas appliance or cap off gas line if desired If you install a decorative gas appliance vented gas log the decorative gas appliance must comply with the S...

Page 14: ...r up will free the outside air door to open Pulling the lever down will lock the door close FOR FURTHER OPERATING GUIDELINES INSTRUCTIONS AND WARRANTY INFORMATION PLEASE REFER TO YOUR HOMEOWNERS GUIDE...

Page 15: ...ce NOTE The left and right panels have identical bricks See instruction on page 19 before installing brick S NOTE INSTALLATION OF BRICK SHOULD BE DONE AFTER THE FIREPLACE IS PLACED IN A PERMANENT LOCA...

Page 16: ...e bricks in this sequence NOTE The left and right panels have identical bricks See section on page 19 before installing brick S NOTE INSTALLATION OF BRICK SHOULD BE DONE AFTER THE FIREPLACE IS PLACED...

Page 17: ...ortant to install the bricks in this sequence NOTE The left and right panels have identical bricks See section on page 19 before installing brick S NOTE INSTALLATION OF BRICK SHOULD BE DONE AFTER THE...

Page 18: ...9 3 3 3 3 1 1 TOTAL 37 6 6 6 6 6 6 0 0 0 0 4 4 0 0 2 0 3 BRICK MATRIX R S T U V W X Y Z AA AB AC AD AE AF AG AH AI BOX 1 HEARTH 42 2 2 2 2 2 2 BOX 2 REAR 42 2 BOX 3 LEFT or RIGHT 42 1 1 BOX 3 LEFT or...

Page 19: ...ULD BE DONE AFTER THE FIREPLACE IS PLACED IN A PERMANENT LOCATION HM HZ HO HJ HJ HJ HR HG HG HI HI HN HEARTH PANEL FULL FULL FULL FULL FULL FULL FULL FULL FULL FULL FULL FULL HL HL HL HL HL HL HAAF HA...

Page 20: ...or right panel It is important to install the bricks in this sequence NOTE INSTALLATION OF BRICK SHOULD BE DONE AFTER THE FIREPLACE IS PLACED IN A PERMANENT LOCATION HL HL HL HL HL HAAF HAAF HAAF HAAF...

Page 21: ...NOTE INSTALLATION OF BRICK SHOULD BE DONE AFTER THE FIREPLACE IS PLACED IN A PERMANENT LOCATION HL HXX HAAH HVV HAAH HAAH HAAH HVV HVV HWW HAAG HAAF HAAF HAAF HF HJ HF HF HF HE HAAG FULL FULL FULL HL...

Page 22: ...32 3 3 5 3 1 8 1 6 12 1 9 BRICK MATRIX HM HN HO HZ HAA HBB HCC HDD HEE HFF HGG HHH BOX 1 HEARTH 42 1 1 1 1 1 1 BOX 2 REAR 42 1 1 BOX 3 LEFT 42 1 1 1 BOX 4 RIGHT 42 TOTAL 1 1 1 1 1 1 1 1 0 1 1 1 BRICK...

Page 23: ...k firmly into the brick housing until it snaps The groove line on the side of the brick will come in contact with the flange on the brick housing This secures the brick into the housing INSTALLING BRI...

Page 24: ...xture that might have gotten onto the brick will easily wipe off 2 In a heavy duty mixing bucket pour seven 7 cups of water in first then add in 4 5 lbs half of one bag provided of sand and 4 5 lbs of...

Page 25: ...e joint should now be flush with the brick surface 8 Using a Joint Striker force the grout mixture into the joint and sweep back and forth until the grout is smooth and round If when pressing the grou...

Page 26: ...re using flat head screws provided INSTALLING DOOR FRAME To install glass door frame construct an opening see table below on the front face of the fireplace Insert door frame into face opening and tig...

Page 27: ...top pins slide into door track Door is installed when top door pin snaps into spring clip Repeat step for remaining door If you find the doors do not close properly or do not appear level or straight...

Page 28: ...26 For more information visit www desatech com REPLACEMENT AND ACCESSORY PARTS...

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