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NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

17

Figure 40

Gas Line Connection

Install a 

¹⁄₂

" (13 mm) gas supply line through

fireplace wall for connection to a decorative
gas appliance inside the firebox. Outside, the
gas supply line must connect to a gas shut-off
valve usually recessed flush into the wall or
floor. The valve should be controlled by a
removable valve key for safety.

CAUTION: PLUMBING CONNECTIONS SHOULD
ONLY BE PERFORMED BY A QUALIFIED, LI-
CENSED PLUMBER. MAIN GAS SUPPLY MUST
BE OFF WHEN PLUMBING GAS LINE TO FIRE-
PLACE OR PERFORMING SERVICE.

Always plumb gas line installation per local
codes. Check all connections and test for gas
leaks, using a gas leak test solution (also
referred to as bubble leak solution).

Note:  Using a soapy water solution (50% dish
soap, 50% water) is an effective leak test
solution but it is not recommended, because
the soap residue that is left on the pipes/
fittings can result in corrosion over time.  Never
use an open flame to check for leaks.

This provision is intended for connection to a
decorative gas appliance incorporating an au-
tomatic shut-off device and complying with the
Standard for Decorative Gas Appliances for
installation in vented fireplaces, ANSI Z21.60
(1991) or American Gas Association draft re-
quirements for Gas-Fired Log Lighters for Wood
Burning Fireplaces, Draft No. 4 dated August,
1993. Install in accordance with the National
Fuel Gas Code, ANSI Z223.1. This complies
with the revised U.L. 127 standard.

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-
ing, first determine the center point for a verti-
cal chimney following the instructions for ver-
tical installation.

Measure height to the ceiling from the top of
fireplace-dimension “B.” Use the appropriate
Offset Elevation Chart to find dimension “A.”
Mark point where you will drive your nail to
show the center point for your offset ceiling cut.

Step 2. Proceed by using the Straight Up Instal-
lation Instructions for cutting and framing ceil-
ing and roof openings.

Note: See Framing and Dimension Chart for the
sizes of the ceiling and roof openings. The size
of the roof opening varies with the degree of
pitch of the roof.

Offset Elbow Assembly

Offset elbows install the same as chimney
sections. First, snap the inner section INTO the
preceding inner section of flue. Check connec-
tion by pulling up slightly to ensure a tight fit.
Next, the outer sections snap lock OVER the
preceding outer section of chimney. Again,
check outer section by pulling up slightly to
ensure proper connection is made.

Return Elbow Assembly

Return elbows install the same way as round
terminations and stabilizers:

Step 1. Hold return elbow over top of last
chimney section.

Step 2. Center inner slip section into inner flue
pipe-slip down.

Step 3. Center outer-locking section over outer
chimney pipe. Push down until locking joint has
firmly engaged.

Step 4. Pull up slightly on return elbow to
ensure locking joint has firmly engaged.

Step 5. Secure support straps to framing
members by nailing under tension in sheer
(

Figure 39 ).

Return

Elbow

Figure 39

Note: The return elbow assembly performs
the same function as a stabilizer. Consider this
when determining the need for a stabilizer.

Note: Do not apply excessive pressure to any
subsequent chimney section following return
elbow assembly when installing. Ensure that
each subsequent chimney section is securely
attached by testing as noted above.

Combustion Air Kits

These appliances are equipped with an outside
(make-up) air door and integral actuator arm.
If the appliance is to be installed with an
outside air vent system, use only Models FAOK-
4 or FAOK-4LD Combustion Air Kits.  These
kits come complete with detailed installation
instructions and all components necessary in
completing a combustion air vent system.

After completing the installation of the op-
tional combustion air vent system the actuator
arm must be put in service and tested to
ensure proper operation before completing
any enclosure around the firebox.  Failure to do
so may result in extensive and costly rework.

The control lever that operates the outside
combustion air valve has been pre-installed on
your fireplace. A coverplate has been mounted
over this control lever only if the outside air kit
has not been attached. The control lever is
located on the closed end of the fireplace open-
ing behind the screen. To open the air damper,
turn the lever handle 1/2 turn counter clockwise
(or until lever can be moved upward), then re-
tighten at desired open position. To close
damper, reverse procedure (

see Figure 40 ).

Operate the actuator through several cycles
including the "lock position.  Ensuring proper
operation and freedom of movement.  Return
the actuator arm to the locked position.

Control

Lever

Summary of Contents for Merit CR-3835L

Page 1: ...y circumstances Any modification or alteration of the fireplace system including but not limited to the fireplace chimney components and accessories may void the warranty listings and approvals of thi...

Page 2: ...afe distance from the fireplace 8 NEVER leave children unattended when there is a fire burning in the fireplace 9 Always keep flue damper open when heat is present in the fireplace 10 Before servicing...

Page 3: ...BOCA Basic National Codes the Standard Me chanicalCodeandtheUniformBuildingCodes When complete these fireplace systems con sists of five basic sub systems 1 The Fireplace 2 The Chimney and Termination...

Page 4: ...re firestopping at the ceiling levels for outside chase installa tions However it is recommended for safety and the reduction of heat loss Figure 5 Chase Enclosure A chase is a vertical box like struc...

Page 5: ...n Each installation is unique however and might require a different sequence 1 Position firebox prior to framing or into prepared framing 2 Install the chimney system 3 Connect house wiring to the fir...

Page 6: ...2 mm Class 0 air duct provided to the collar on the chimney collarenclosurewiththescrewsprovidedinthe hardware kit IMPORTANT UNDER NO CIRCUMSTANCES CAN THE FIREPLACE TOP SPACERS FIGURE 6 BE REMOVED OR...

Page 7: ...432mm 610 mm 483mm 660 mm Perpendicular to roof ridge A B Ceiling Framing C D Roof Framing Framing Without False Header Header B A C Outside Corner C A Back Wall of Chase Encloslure Including Finishi...

Page 8: ...W MINIMUM 2 51 MM CHIMNEY AIR SPACE TO COMBUSTIBLE FRAMING MEMBERS THROUGHOUT VERTI CAL OR OFFSET CHIMNEY INSTALLATION SEE NOTE A minimum 2 51 mm air space must be reserved for all combustible materia...

Page 9: ...om Above 10 Max Room Above 2 Min Air Space 2 Min Air Space Figure 23 Outer pipe section installs in just the opposite way the lanced end goes down and each new section goes OVER the outside of the pre...

Page 10: ...ote Do not caulk or seal the ventilating openings Step 7 Secure flashing by nailing along the perimeter into roof using 8d nails If shingled roof slide upper end and sides of roof flashing under shing...

Page 11: ...smoke free opera tion Trees buildings adjoining roof lines ad verse wind conditions etc may require a taller chimney should the fireplace not draft properly see Figure 32 MULTIPLE TERMINATIONS If more...

Page 12: ...ng Do not puncture the inner flue Maximum offset of chimney system is 30 Two offsets must not be assembled to form a 60 offset However two sets of offset and return elbows may be used on a single flue...

Page 13: ...imney Components Chimney Only Inches Feet Inches 12 18 24 36 48 S4 Meters 247 20 7 0 1 0 0 5 6 29 253 21 1 0 0 1 0 5 6 44 257 21 5 1 1 0 0 5 6 55 263 21 11 1 0 1 0 5 6 70 269 22 5 0 1 1 0 5 6 85 275 2...

Page 14: ...hes Feet Inches 12 18 36 MM M 461 38 5 0 1 13 11722 11 72 465 38 9 2 0 13 11824 11 82 471 39 3 1 1 13 11976 11 98 479 39 11 0 0 14 12179 12 18 489 40 9 1 0 14 12433 12 43 495 41 3 0 1 14 12586 12 59 4...

Page 15: ...1 1073 2064 44 85 1 1 0 1 1 1 0 1124 2159 45 86 1 1 0 0 1 0 1 1149 2197 47 90 1 1 0 0 2 1 0 1200 2286 48 91 1 1 0 0 0 2 0 1226 2330 49 93 1 1 0 2 1 1 0 1251 2381 51 97 1 1 0 1 4 0 0 1308 2470 53 100 1...

Page 16: ...59 1 0 0 1 1 743 1505 31 63 1 0 2 0 1 794 1600 32 65 1 0 4 1 0 826 1651 34 68 1 0 1 1 1 870 1734 36 71 1 0 3 0 1 921 1822 37 73 1 0 0 2 1 946 1861 38 75 1 0 0 0 2 972 1905 39 77 1 0 2 1 1 997 1956 41...

Page 17: ...stall the same as chimney sections First snap the inner section INTO the preceding inner section of flue Check connec tion by pulling up slightly to ensure a tight fit Next the outer sections snap loc...

Page 18: ...ed with all fireplaces It is to protect the combustible floor in front of the fireplace from both radiant heat and sparks The hearth extension must extend 8 beyond both sides of the fireplace opening...

Page 19: ...3 85 3 7 8 Super Firetemp M Johns Manville 61 1 64 73 3 4 Super Firetemp L Johns Manville 54 1 85 64 5 8 Face brick 9 00 111 10 71 10 3 4 Common brick 5 00 20 5 95 6 Cement mortar 5 00 20 5 95 6 Cera...

Page 20: ...T BE SEALED WITH A NON COMBUSTIBLE MATERIAL Calculating Minimum Thickness if Multiple Materials are Used At times it is important to know what combination of materials are acceptable for use as floor...

Page 21: ...e Combination 63L28 FTF8 OR15 Offset Return Elbow 63L34 FTF10 OR15 Starter Section 8345 FTF8 SS Attic Shield Assembly Firestop Spacer 63L67 FTF8 FSAS Canada Only 63L68 FTF10 FSAS 63L10 FTF8 12 63L13 F...

Page 22: ...r Flat 63L36 F10FS 2 Outside Combustion Air Kits with duct 81L87 FOAK without duct 81L88 FOAK LD 63L25 FTF8 S4 Stabilizer 63L26 FTF10 S4 Chimney Pack Conventional 63L70 FTF8 CP7 Contains 3 FTF8 36 1 F...

Page 23: ...NOTE DIAGRAMS ILLUSTRATIONS NOT TO SCALE 23 NOTES...

Page 24: ...850 048M REV N C 01 2007 1110 West Taft Avenue Orange CA 92865 The manufacturer reserves the right to make changes at any time without notice in design materials specifications prices and also to disc...

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