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INSTALLATION
INSTRUCTIONS
®
MERIT SERIES
36" Wood Burning Fireplaces
P/N 850,048M REV. N/C 01/2007
MODELS
CR-3835R CR-3835L
This installation manual will enable you to obtain a safe, efficient and
dependable installation of your fireplace system. Please read and under-
stand these instructions before beginning your installation.
Do not alter or modify the fireplace or its components under any
circumstances. Any modification or alteration of the fireplace system,
including but not limited to
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3. These fireplaces must be installed with either 13. DO NOT use a fireplace insert or any TABLE OF CONTENTS Security Chimneys model FTF8 (8" [203mm] other products not specified herein by the Safety Rules .................................... page 2 inside diameter) or FTF10 (10" [250mm] inside manufacturer for use with this fireplace. All diameter) Chimney System only. These sys- gas log sets must be operated with the Tools and Building Supplies ............ page 2 tems are intended for use in
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The most important areas of concern dealing Note: Illustrations shown reflect “typical” When complete these fireplace systems con- with the installation of factory-built fireplaces are installations with nominal dimensions and sists of five basic “sub-systems”: clearances to combustible materials, proper as- are for design and framing reference only. sembly of component parts, height of the chim- Actual installations may vary due to indi- 1. The Fireplace ney system, the proper use of accessorie
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Insulate Joists Chimney Height LOCATION OF FIREPLACE Same As Ceiling The total height of your completed fireplace sys- Carefully select the proper location for heat tem from the surface the fireplace rests on to the circulation, aesthetics, chimney obstructions chimney top must not exceed 50' (15.24 m) and and clearance to side wall(s). With proper pre- must also meet minimum height requirements. planning, a slight adjustment of a few inches Refer to the minimum system height chart. can save con
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2. Measure the square footage of the floor ASSEMBLY STEPS 1/2" (13mm) Clearance To space to be occupied by the system, surrounds Back And Sides and hearth extensions. Note: The following steps represent the normal Combustible sequence of installation. Each installation is Wall 3. Note the floor construction, i.e. 2 x 6’s, 2 x 8’s unique, however, and might require a different or 2 x 10’s, single or double joists, type and sequence. thickness of floor boards. Hearth Extension 1. Position firebox
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IMPORTANT: UNDER NO CIRCUMSTANCES FIREPLACE SPECIFICATIONS CAN THE FIREPLACE TOP SPACERS (FIGURE 6 ) BE REMOVED OR MODIFIED, NOR MAY 17 1/2" (445mm) YOU NOTCH THE HEADER TO FIT AROUND OR BE INSTALLED LOWER THAN THE SPAC- ERS. THE HEADER MAY BE IN DIRECT CON- TACT WITH THE TOP SPACERS BUT MAY NOT 40 1/2" (1029mm) BE SUPPORTED BY THEM. 32 7/8" (835mm) 37 3/8" 21" (949mm) (533m) Note: The framed depth, 24 (610 mm) from a framed wall, must always be measured from a finished surface. If a wall coveri
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FRAMING SPECIFICATIONS Back Wall of Chase/Encloslure Including Note: No Wall Shield Finishing Materials if any Required On This Wall D Rough Framing Face (Unfinished C Shown) B 8" Max. (203mm) 11 ⁷⁄₈" Header (302mm) 45° A C 8" (203mm) Min. To Protected Side Wall Framing Without False Header Note: Combustible Materials Figure 14 May Be Placed In Shaded Area. Inside Corner Using Outside Air Figure 12 Back Wall of Chase/Encloslure Framing Dimensions Including Finishing Materials if any CR-3835 Seri
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Step 6. Route the Class 0 air duct out the back Note: If installing the optional collar duct kit, it INSTALLING THE CHIMNEY SYSTEM wall or side wall, up through the ceiling or floor should be installed after the chimney has been joists to an outside wall. The air duct should be attached to the flue collar. Step 1. Before continuing, check the operation located above snow level. of the damper, as described on page 4, (refer Step 3. Position appropriate firestop spacer at to Figure 3 ). Note: If t
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At all subsequent joints, the upper flue section Always maintain 2" (51 mm) minimum air space CHIMNEY 30° OFFSET THROUGH FLOOR fits into the preceding flue section. Each piece to combustible materials and always check OR CEILING snaps together by means of locking tabs (9 each chimney joint (inner and outer) to ensure locking tabs per joint). Check each piece by proper engagement (See **Note). Check verti- It may be necessary to assemble the chimney at pulling up slightly from the top to ensure p
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Note: Do not apply excessive pressure to any Note: If chimney extends more than 8' above subsequent chimney sections following the roof surface, guy wires are also recommended. stabilizer when installing. Ensure each subse- Use three (3) guy wires, attach to locking band quent chimney section is securely attached by assembly, extend and secure to roof in a trian- testing as noted in Step 4. gular pattern (Figure 30 ). Guy wires are not supplied by the manufacturer. Step 6. Select the proper Secu
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FTF8 AND FTF10 CHIMNEY COMPONENT Less Than 10' CALCULATIONS 2' Min. The minimum installed height of the completed fireplace systems is 15' 2" (4.67 m). The maxi- mum height for all systems is 50' 0" (15.24 m). 3' Min To determine the number of chimney sections 10' 3' and chimney components required, follow these Min steps: 1. Determine total vertical height of the fire- place installation. This dimension is the dis- tance from the surface the fireplace sets on to the point where smoke exits from
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The offset and return elbows may be attached OFFSET CALCULATIONS together, or a section or sections of chimney may be used between, but do not exceed 20' in Step 1. Use Offset Chart to determine amount A 2 total length between elbows. If sections of pipe of horizontal offset (A) and height (B) for vari- exceed 10' between elbows, a chimney stabi- ous chimney section assemblies. C 2 lizer must be used at the midpoint (Figure 34 ). B 2 The stabilizer support straps must be attached Step 2. Use “He
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FTF8 VERTICAL ELEVATION CHART Height Of Number Of FTF8 Height Of Height Of Number Of FTF8 Height Of Chimney Only Chimney Components Chimney Only Chimney Only Chimney Components Chimney Only Inches Feet/Inches 12" 18" 24" 36" 48" -S4 Meters Inches Feet/Inches 12" 18" 24" 36" 48" -S4 Meters 10 ¹⁄₄ 010 ¹⁄₄ 1 0 0 0 0 – 0.26 247 ¹⁄₂ 20 7 ¹⁄₂ 0 1 0 0 5 – 6.29 16 ¹⁄₄ 14 ¹⁄₄ 0 1 0 0 0 – 0.41 253 ¹⁄₂ 21 1 ¹⁄₂ 0 0 1 0 5 – 6.44 22 ¹⁄₄ 110 ¹⁄₄ 0 0 1 0 0 – 0.57 257 ³⁄₄ 21 5 ³⁄₄ 1 1 0 0 5 – 6.55 26 ¹⁄₂ 22 ¹⁄₂
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FTF10 VERTICAL ELEVATION CHART Height Of Number Of FTF10 Height Of Height Of Number Of FTF10 Height Of Chimney Only Chimney Lengths Chimney Only Chimney Only Chimney Lengths Chimney Only Inches Feet/Inches 12" 18" 36" MM M Inches Feet/Inches 12" 18" 36" MM M 11 0 11 1 0 0 279 0.28 461 ¹⁄₂ 38 5 ¹⁄₂ 0 1 13 11722 11.72 17 1 5 0 1 0 432 0.43 465 ¹⁄₂ 38 9 ¹⁄₂ 2 0 13 11824 11.82 21 ¹⁄₄ 19 ¹⁄₄ 2 0 0 540 0.54 471 ¹⁄₂ 39 3 ¹⁄₂ 1 1 13 11976 11.98 27 ¹⁄₄ 23 ¹⁄₄ 1 1 0 692 0.69 479 ¹⁄₂ 39 11 ¹⁄₂ 0 0 14 12179
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FTF8 OFFSET ELEVATION CHART (With FTF8-SS Starter Section) A B FTF10/8-ES30 FTF8-SS Number of FTF8 A B Offset Height Offset/Return Starter FTF8-S4 Chimney Sections Offset Height (Inches) (Inches) Elbow Set Section Stabilizer 12" 18" 36" 48" (mm) (mm) 14 32 ¹⁄₂ 1 1 0 0 0 0 0 356 826 19 41 ¹⁄₄ 1 1 0 1 0 0 0 483 1048 22 46 ¹⁄₂ 1 1 0 0 1 0 0 559 1181 24 ¹⁄₄ 50 ¹⁄₄ 1 1 0 2 0 0 0 616 1276 27 ¹⁄₄ 55 ¹⁄₄ 1 1 0 1 1 0 0 692 1403 30 ¹⁄₄ 60 ¹⁄₂ 1 1 0 0 2 0 0 768 1537 31 62 1 1 0 0 0 1 0 787 1575 32 ¹⁄₄ 64 ¹
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FTF10 OFFSET ELEVATION CHART A B FTF10-ES30 Number of FTF10 A B Joints Offset Height Offset/Return FTF10-S4 Chimney Sections Offset Height (Inches) (Inches) Elbow Set Stabilizer 12" 18" 36" (mm) (mm) Chimney 415 ³⁄₄ 1 0 0 0 0 102 400 Section 924 ¹⁄₂ 1 0 1 0 0 229 622 4' 12 29 ³⁄₄ 1 0 0 1 0 305 756 14 ¹⁄₄ 33 ¹⁄₂ 1 0 2 0 0 362 851 17 ¹⁄₄ 38 ¹⁄₂ 1 0 1 1 0 438 978 20 ¹⁄₄ 43 ³⁄₄ 1 0 0 2 0 514 1111 No. 8 x 1/2" SMS 6' 21 45 ¹⁄₄ 1 0 0 0 1 533 1149 22 ¹⁄₄ 47 ¹⁄₂ 1 0 2 1 0 565 1207 25 ¹⁄₄ 52 ¹⁄₂ 1 0 1 2
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INSTALLING OFFSETS First, review the Offset Elevation Chart and Figure 38 for reference. Step 1. Determine the offset distance where chimney is to pass through the first ceiling- dimension “A.” To find this point on your ceil- Return ing, first determine the center point for a verti- Elbow Control cal chimney following the instructions for ver- Lever tical installation. Figure 39 Measure height to the ceiling from the top of Note: The return elbow assembly performs fireplace-dimension “B.” Use
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These fireplaces may sit directly on a combus- Glass Doors Hearth Extensions and Wall Shields tible surface. A 2" air space is required be- If glass doors are to be installed on these tween combustible framing and the chimney. A hearth extension must be installed with fireplaces, refer to specific installation instruc- A 1" air space is required between combustible all fireplaces. It is to protect the combustible tions packed with the glass doors. Use only the framing and fireplace outer wrappe
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Hearth Extension Dimensions A 20" (508 mm) B 38" (965 mm) Metal Safety Strip 8" 12" C 8" (203 mm) (203mm) (305mm) E Min. D D 20" (508 mm) C B A E 12" (305 mm) 20" 20" (508mm) (508mm) Outside Corner Figure 43 Answer - The minimum required thickness of the Micore 160 is .417”, Methods of Determining Hearth Extension and Wall Shield therefore round up to nearest standard thickness available which is 1/2”. Equivalents - To determine the thickness required for the alternate material when either the
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The sum of all “R values” is: .70 + .10 +. 038 FINISH TO YOUR TASTE If Less Than 12" (305mm) Wall + .10 = .938 40" Shield Required (1016mm) There are a wide variety of “finished looks” for This would NOT be an acceptable combination these fireplaces, from formal wall decor with of material for the hearth extension since the elaborate mantels to rustic wood paneling or total calculated “R value” of the materials used warm brick facings. Wall Shield Not Required Wall is under the required “R value
