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10 FOOT RULE: 

All flue gas outlet of chimney termination 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 16). 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
FINISHING THE FIREPLACE: 

Combustible materials, such as wallboard, gypsum board, 
sheet rock, drywall, plywood, etc may make direct contact 
with sides and top periphery of the fireplace face. It is 
important that combustible materials do not overlap the face 
itself. Brick, glass, tile or other non-combustible materials 
may overlap the front face provided they do not obstruct 
essential openings like louvered slots or any other opening. 
When overlapping with a non-combustible facing material use 
only non-combustible mortar or adhesive. 

 
MANTELS: 

A mantel may be installed if desired (see figure 17). 
Woodwork such as wood trims, mantels, or any other 
combustible material projecting from the front face must not 
be placed within 9 inches of the fireplace opening (and within 
6 inches of the top louver opening). Combustible materials 
above 9 inches and projecting more than 1-1/2 inches from the 
fireplace face must not be placed less than 12 inches from the 
top of the opening of the fireplace (NFPA STD 211, Sec. 7-
3.3.3). 
 

 

Mantels or any other combustible materials such as wallboard, 
sheet rock, drywall, plywood, etc. butt up to the side of the 
black metal face of the fireplace.  The clearances from the side 
of the fireplace to any combustible material and wall should 
fall within the limits shown in figure 17. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
*Example 1 (figure 18): The face of a mantel, bookshelf, etc. 
is made of combustible materials and protrudes 3-3/8” from 
the wall the fireplace is installed in.  This combustible material 
must be a minimum of 8” from the side of the fireplace 
opening. 
*Example 2 (figure 18): The face of a mantel, bookshelf, etc. 
is made of combustible materials and protrudes 2” from the 
wall the fireplace is installed in.  This combustible material 
can butt up against the side of the fireplace (i.e. 3” from the 
fireplace opening). 

OPERATING GUIDELINES AND MAINTENANCE 
INSTRUCTIONS 
GLASS DOORS 

Glass doors are standard with the 36LM/RM fireplace. When 
the fireplace is in operation doors must be in the FULLY 
OPEN or FULLY CLOSED position only or a fire hazard may 
be created (see figure 19). 
A fireplace equipped with glass doors operates much 
differently than a fireplace with an open front.  A fireplace 
with glass doors has a limited amount of air for combustion.  
Excessive heat within the fireplace can result if too large a fire 
is built or if the 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 flue damper and the glass doors must be fully 
open before starting the fire. This will provide sufficient 
combustion air and maintain safe temperatures in the firebox. 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

Figure 19 

 

Figure 17  

MINIMUM FRONT AND TOP CLEARANCES

 

Figure 16 

FIREPLACE

TOP VIEW OF FIREPLACE

OPENING

Figure 18 

Summary of Contents for 36 LM

Page 1: ...UCTIONS WARNING ALWAYS LEAVE GLASS DOORS FULLY OPENED OR FULLY CLOSED WHEN OPERATING THIS FIREPLACE This fireplace is approved for use as a wood burning fireplace 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 vent free log can only be installed in an aftermarket completion of sale ...

Page 2: ... 3 6 OUTSIDE AIR KIT INSTALLATION PG 4 7 FAN KIT ASSEMBLY PG 4 8 CHIMNEY PIPE INSTALLATION PG 4 5 6 9 TERMINATIONS PG 6 10 FINISHING YOUR FIREPLACE PG 7 11 MANTELS PG 7 12 GLASS DOORS PG 7 13 GAS LINE INSTALLATIONS PG 8 14 FIRESTOP SPACER PG 9 15 DAMPER OPERATION PG 9 16 TECHNICAL SERVICE PG 9 17 REPLACEMENT AND TECHNICAL PARTS PG 10 ...

Page 3: ... the cutting of joists or roof rafters will make installation easier 4 An outside air kit is included with this fireplace For more details refer to section on outside air kit installation on page 4 WARNING DO NOT INSTALL IN A BEDROOM MINIMUM CLEARANCES TO COMBUSTIBLES Back and sides of fireplace 3 4 Min Note the clearance is not required at the nailing flanges Ceiling to Top of Opening 66 1 4 Min ...

Page 4: ... prevent corrosion STEP 6 Using screws or nails secure the fireplace to the framing through flanges located on the sides of the fireplace see figure 4 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 Use DESA hearth extension see acc...

Page 5: ...t chimney systems for manufactured houses require a standard straight installation as described in this section Important If the height of the chimney assembly exceeds requirements for transportation of the home the chimney installation may be completed after the home is sited Note the termination must always be installed after the home is sited ASSEMBLING AND INSTALLING THE DOUBLE WALL CHIMNEY SY...

Page 6: ...he firestop assembly and thimble to desired angle and secure with screws provided Insert the thimble and firestop into the prepared opening and secure to the ceiling by nailing through the firestop flanges The thimble should be even with or above the roofline Thimble extensions are available as an option when required See accessories on page 10 NOTE If there is a second story in the home firestop ...

Page 7: ...p terminations In any case refer to the installation instructions supplied with the termination The terminations approved for this fireplace are the RT 8DM and RTL 8DM Figure 14 shows an RTL 8DM round top termination IMPORTANT Terminations are required but can be installed once the manufactured house is sited CAUTION DO NOT SEAL OPENINGS ON THE ROOFTOP FLASHING FOLLOW THE INSTALLATION INSTRUCTIONS...

Page 8: ...ce of the fireplace The clearances from the side of the fireplace to any combustible material and wall should fall within the limits shown in figure 17 Example 1 figure 18 The face of a mantel bookshelf etc is made of combustible materials and protrudes 3 3 8 from the wall the fireplace is installed in This combustible material must be a minimum of 8 from the side of the fireplace opening Example ...

Page 9: ... released Remove fragmented portions of refractory see figure 20 STEP 2 Remove gas line cover plate on rear of fireplace and pull out insulation from gas line conduit sleeve Save insulation for reuse STEP 3 Run a inch black iron gas line into the fireplace through the rear at 11 inches from the floor and through gas line conduit sleeve if using a raised platform add height Provide sufficient gas l...

Page 10: ...in the keyway slot will free the damper blade to automatically open To close reach in and push the handle back into the keyhole slot then pull down and forward to lock it in place see figure 23 FOR FURTHER OPERATING GUIDELINES INSTRUCTIONS AND WARRANTY INFORMATION PLEASE REFER TO YOUR HOMEOWNERS GUIDE OR CONTACT YOUR AUTHORIZED DEALER TECHNICAL SERVICE You may have further questions about installa...

Page 11: ...Double Wall Pipe 1 3 0 18 8DM 18 Double Wall Pipe 0 0 2 FST A Adjustable Firestop Thimble 1 1 1 6F 8 Roof Flashing 1 1 1 VSC1 8DM Storm Collar 1 1 1 RTL 8DM Round Cap Termination 1 1 1 VENT KITS USE FOR MOST COMMON MANUFACTURED MOBILE HOME INSTALLATIONS SEE BELOW PART NUMBERS VENT KIT ACCESSORY PARTS REPLACEMENT PARTS ...

Page 12: ...Double Wall Pipe 1 3 0 18 8DM 18 Double Wall Pipe 0 0 2 FST A Adjustable Firestop Thimble 1 1 1 6F 8 Roof Flashing 1 1 1 VSC1 8DM Storm Collar 1 1 1 RTL 8DM Round Cap Termination 1 1 1 VENT KITS USE FOR MOST COMMON MANUFACTURED MOBILE HOME INSTALLATIONS SEE BELOW PART NUMBERS VENT KIT ACCESSORY PARTS REPLACEMENT PARTS ...

Page 13: ...P N 035 16687 000 ...

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