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INSTALLATION
INSTRUCTIONS
™
DIRECT VENT MERIT
LMDV-33/35/40 SERIES
This appliance may be installed in an aftermarket
VENTED GAS FIREPLACE HEATERS - DIRECT VENT MODELS
permanently located, manufactured home (USA
P/N 850,029M REV. G 05/2008
only) or mobile home, where not prohibited by
local codes. This appliance is only for use with
MODELS
the type of gas indicated on the rating plate. This
appliance is not convertible for use with other
Millivolt Models Electronic Models
gases, unless a
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This appliance is only for use with the type PACKAGING TABLE OF CONTENTS of gas indicated on the rating plate. This ap- The assembled vented gas fireplace heater is Packaging .........................................Page 2 pliance is not convertible for use with other packaged with: gases, unless a certified kit is used. Introduction ......................................Page 2 1 - One log set located in fireboxarea. General Information ..........................Page 2 2 -
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O T I O O L O I P L I T P O O N IGNITER it OFF ON CONTROL TPTH TP TH L O L I P F LO F Install the appliance according to the regulations Input (BTU) Manually-Modulated Gas Manifold Gas Supply Pressure of the local authorities having jurisdiction and, Valves (millivolt models) (millivolt models) in the USA, the National Fuel Gas Code NFPA 54 NATURAL GAS Fuel # Low High / ANSI Z223.1 - latest edition or, in Canada, the CAN1-B149.1 and.2 codes -latest edition.
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REAR VENT APPLICATION Massachusetts And New York City, NY Re- quirements These appliances are approved for installation in the following USA locations listed in the following: Massachusetts: These fireplaces are approved for installation in APPLICATION the US state of Massachusetts if the following TOP VENT additional requirements are met- RECESSED • Installation and repair must be done by a INSTALLATION plumber or gas fitter licensed in the Comm
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MANUFACTURED HOME Vertical Vent Termination Clearances REQUIREMENTS Termination Heights For Vents TERMINATION HEIGHTS FOR VENTS ABOVE Above Flat Or Sloped Roofs FLAT OR SLOPED ROOFS This appliance may be installed in an after- Ref. NFPA 54 / ANSI Z223.1, 7.6 Horizontal Overhang market permanently located, manufactured Roof Pitch * Feet * Meters home (USA only) or mobile home, where not 2 FT Vertical MIN. 2 FT MIN. Wall prohibited by local codes. Flatto 6/12 1.0 0.3 Lowest Disc
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V EXTERIOR HORIZONTAL VENT TERMINATION CLEARANCE REQUIREMENTS NOTE: Local Codes Or Regulations May Require Different Clearances. * See Item D in the Text Below. P N N Center Line NOTE: Location Of The Vent Termination Exterior Wall Inside of Termination Must Not Interfere With Access To The Corner Detail O Electrical Service. *18” V V G Q Horizontal Termination V 18” Ventilated Soffit A Inside Corner = 9” in U.S. A = 12” in Canada Detail D H 3 ft. B B D X C A A V V L Fixed V Operable Closed W
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MINIMUM CLEARANCES TO COMBUSTIBLES Hearth Extension A hearth extension is not required with this appliance. If a hearth extension is Appliance and Vent Clearances used, do not block the lower control compartment door. Any hearth extension used is for appearance The appliance is approved with zero clearance to only anddoes not have to conformto standard hearth extensioninstallation requirements. combustible materials on all sides (as detail
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DETAILED INSTALLATION STEPS Step 3. (Page 11) Install the vent system and exterior termination. The appliance is shipped with all gas controls and Step 4. (Page 23) FieldWiring components installed and pre-wired. Remove a. Millivolt Appliances – Install the operating the shipping carton, exposing the front glass control switch (not factory provided) and Unit Nailing Flange door. Remove the top and bottom louvered bring in electrical service line for f
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FIREPLACE SPECIFICATIONS Framing **FRAMING WITH SQUARE HORIZONTAL TERMINATIONS (SV4.5HT-2) Framing Dimensions ** Framing should be constructed VENT FRAMING - of 2x4 or larger lumber TOP VENT WITH ONE Model No. A B C D E ϒ 90 ELBOW 10-1/2 in. 33-1/4 33-1/4 ------ 37-3/4 12-7/8 (267) LMDVT-3328 mm 845 845 ------ 959 327 VENT FRAMING - in. 33-1/4 33-1/4 19-5/8 ------ 12-7/8 REAR VENT WITH LMDVR-3328 NO ELBOWS mm 845 845 498 ------ 327 7 in. 35-1/4 35-1/4 21-11/16 39-3/4 16 (178) 5-1/8 LMDV-3530 (1
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FIREPLACE FRAMING SPECIFICATIONS Note- b Venting requirments for rear vent applications in corner installations - • The horizontal vent length "a" to "b" must not exceed 28 inches (711 mm). F LMDV and LMDVR units LMDVT-3328 and LMDVR-3328 Models - 7 1/4 (184) Dimension A to F occur when one 45 degree elbow is connected directly to the LMDV and LMDVT units appliance collar. LMDVT-3530 and LMDVR-4035 Models - Inches Dimension D and F occur when one 45 degree elbow is connected directly to
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Step 3. INSTALL THE VENT SYSTEM When the rear vent collar is being used, from Vent Restrictor Installation inside the firebox, remove the two screws se- (Top Vent) General Information curing the lintel to the rear wall of the firebox, A vent restrictor may be needed when vertical- These instructions should be used as a guide- then remove the lintel. Remove the four cover ly terminating the vent system above the roof line and do not supersede local codes in any plate
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VERTICAL TERMINATION SYSTEMS (ROOF) VENT SECTION LENGTH CHART VENT SECTION LENGTH CHART Nominal 6 12 24 36 48 T Nominal Section 6 12 24 36 48 T VENT SECTION LENGTH CHART See Figure 20 on Page 12 and Figures 28- O Section Length Length (inches) O VENT SECTION LENGTH CHART Nominal Section T 32 on Pages 15 and 16 and their associated T 6 12 24 36 48 (inches) T Length (inches) O Nominal T Net Section 4 ½ 10 ½ 22 ½ 34 ½ 46 ½ A Vertical Vent Tables which illustrate the various A T Sect
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Vertical (Offset) Installation To add another vent component to a length of B. Attach vent components to appliance vent run, align the dimpled end over the inclined - Secure Vent SV4.5 direct vent system compo- Analyze the vent routing and determine the channel end of the previously installed section, nents are unitized concentric pipe components quantities of vent sections and number of elbows adjusting the radial alignment until the four lock- fe
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One method of support is by utilizing field pro- K. Install the vertical termination - The final step involves installation of the SV4.5CGV-1 vided support straps (conventional plumber's Vertical Termination. Extend the vent sections tape). Secure the plumber's tape to the framing to the height as shown in the "Vertical vent members with nails or screws. Loop the tape around the vent, securing the ends of the tape C termination secti
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Notes: • It is very important that the horizontal/in- Table A clined run be maintained in a straight (no u When using Secure Flex, use Firestop / V Minimum H Maximum dips) and recommended to be in a slightly Spacer SF4.5VF. elevated plane, in a direction away from the feet (meter) feet (meter) fireplace of 1/4" rise per foot (20 mm per 2 (0.610) 1 (0.305) meter) which is ideal, though rise per foot run ratios that are smaller are acceptable all 4 (1.219) 2 (0.610) the way down to at or
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VERTICAL VENT FIGURES/TABLES (CONTINUED) Table C H1 H+H Maximum H Maximum V Minimum 1 feet (meter) feet (meter) feet (meter) Ceiling u 5 (1.524) 2 (0.610) 1 (0.305) Firestop / Spacer (SV4.5VF) 10 (3.048) 4 (1.219) 2 (0.610) 15 (4.572) 6 (1.829) 3 (0.914) 20 (6.096) 8 (2.438) 4 (1.219) Wall Firestop/ v Spacer (SV4.5HF) V + V + H + H = 40 feet (12.2 m) Max 1 1 H = 8 feet (2.438 meters) Max. Ceiling u V1 Firestop / Spacer H + H = 20 feet (6.096 meters) Max. 1 (SV4.5VF) u When using Secure
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Building Support Brackets TYPICAL HORIZONTAL VENT INSTALLATION Support Horizontal / Inclined Run Framing SV4.5 HT-2 Termination SV4.5E90 Shown Elbow SV4.5L6/12/24/36/48 Vent Sections Exterior u Firestop / Spacer Ceiling Wall SV4.5VF Vertical Support Bracket Spacing Rise Every 5 ft (1.52 m) u When Using Secure Flex, Use Firestop / Spacer SF4.5VF SV4.5 HT-2 Termination See Figure 20 on Page 12 or Figure 23 on Shown Page 13 for vertical vent section support. Fireplace Figure 33 B. Frame exterio
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J. Assemble vent run to exterior wall - If not To help minimize water infiltration it is previously measured, locate the center of the recommended that the Firestop/Spacer vent at the exterior wall. Prepare an opening as (SV4.5HF) be installed on the exterior side of the wall. described in Step B. Assemble the vent system SV4.5 HT-2 to point where the terminus of the last section is Termination 7" located relative to the exterior surface to which (17
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HORIZONTAL VENT FIGURES/TABLES WARNING Notes: Under no circumstances, may separate sections of • Secure Vent components (rigid vent pipe and terminal) are shown in concentric flexible vent pipe be joined together. the Figures; Secure Flex components (flexible vent pipe and terminal) may also be used. • Two 45 degree elbows may be used in place of one 90 degree elbow. Table F The same rise to run ratios, as shown in the venting Figures for 90 H Maximum V Minimum elbows,must be
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HORIZONTAL VENT FIGURES / TABLES (CONTINUED) Table H V Minimum H+H Maximum H Maximum 1 H H feet (meter) feet (meter) feet (meter) 1 5 (1.524) 2 (0.610) 1 (0.305) 10 (3.048) 4 (1.219) 2 (0.610) �Wall 15 (4.572) 6 (1.829) 3 (0.914) Firestop/Spacer (SV4.5HF) 20 (6.096) 8 (2.438) 4 (1.219) �Ceiling V + H + H = 40 feet (12.2 m) Max 1 Firestop/Spacer H = 8 feet (2.438 meters) Max. (SV4.5VF) H + H = 20 feet (6.096 meters) Max. 1 �When using Secure Flex, use Firestop/Spacer SF4.5VF. V Example:
