Lennox Hearth MP54-VDLPM manual

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 1 VENTED GAS FIREPLACE HEATERS - DIRECT VENT MODELS P/N 850,043M REV. F 09/2008 MODELS DIRECT VENT MERIT ™ PLUS SERIES This appliance may be installed in an aftermarket perma- nently located, manufactured home (USA only) or mobile home, where not prohibited by local codes. This appliance is only fo[...]

2 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Figure 1 TABLE OF CONTENTS Packaging ........................................ page 2 Introduction ..................................... page 2 General Information ......................... page 2 Location .......................................... page 4 Appliance and Vent Clearances ....... page 5[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 3 Note: Power venting of direct vent fireplaces may result in the reduction of efficiencies by as much as ten percent. Consider this in making any venting and heating decisions in any installation application. % s e i c n e i c i f f E s l e d o M s a G l a r u t ae Nn a p o r P 4 P y d a e t S e t a[...]

4 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Figure 2 Figure 3 *Note: 3 in. (76mm) above any horizontal/ inclined vent component for the MPLDV30 in all cases, and for the MPLDV35, MPLDV40 & MPLDV45, when the vent center line is greater than 48" (1219 mm) above the fire- place top wrapper surface. Increase this clearance to 5" (1[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 5 12 X Roof Pitch is X/12 2 FT MIN. 2 FT MIN. Lowest Discharge Opening H* *H = MINIMUM HEIGHT FROM ROOF TO LOWEST DISCHARGE OPENING OF VENT TERMINA TION HEIGHTS FOR VENTS ABOVE FLA T OR SLOPED ROOFS Horizontal Overhang Vertical Wall Vent T ermination Storm Collar Concentric Vent Pipe Flashing 1 inch [...]

6 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. The fireplace should be secured to the side framing members using the unit's nailing flanges - one top and bottom on each side of the fireplace front. See Figure 6. Use 8d nails or their equivalent. Unit Being Secured by Its Nailing Flanges to the Framing Figure 6 Figure 5 - Side Elevation Vie[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 7 Figure 8 EXTERIOR HORIZONTAL VENT TERMINATION CLEARANCE REQUIREMENTS V V V V V F C Fixed Closed Window Operable Window B B A B H M I = Area where Termination is not Permitted = Air Supply Inlet X = Vent T ermination V D V 3 ft. 3 ft. A A A = 9” in U.S. = 12” in Canada V L B J X V A G Inside Cor[...]

8 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Figure 10 Figure 9 Framing FIREPLACE FRAMING SPECIFICATIONS Corner Framing with Square Termination (SV4.5HT-2) A B *7 (178) 5-1/8 **12-1/8 (308) 10-1/2 ( 267 ) D Framing should be constructed of 2 x 4 or larger lumber. Inches (mm) (130) C is the required framing depth dimension when the finish mate[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 9 RIGHT SIDE VIEW B 17 (432) 1 (25.4) LEFT SIDE VIEW 4 3/4 (121) 2 9/32 (58) TOP VIEW 6 5/8 (168) F G FRONT VIEW 13 11/64 (335) A E D C 10 (254 mm) H 3 5/16 (100 mm) . o N l e d o MA B C D E F G H 0 3 V D L P M . n i2 / 1 0 42 / 1 7 38 / 5 0 28 / 1 4 24 / 1 0 34 / 3 9 18 / 7 94 / 1 7 2 m m9 2 0 13 5 [...]

10 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Figure 13 Step 3. INSTALL THE VENT SYSTEM General Information These instructions should be used as a guide- line and do not supersede local codes in any way. Install vent according to local codes, these instructions, the current National Fuel Gas Code (ANSI-Z223.1) in the USA or the current standa[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 11 Maintain a minimum 1" (25 mm) clearance to combustible materials for all vertical vent elements. Clearances for horizontal vent elements are 1" (25 mm) at the sides and 1" (25 mm) on the bottom. Clearances above horizontal vent elements are 3" (76 mm) for all models and all app[...]

12 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 10 1/2” Min. (267 mm) 10 1/2” Min. (267 mm) Figure 14 Align the dimple (four places) of the upper vent section with the opening of the locking incline channel on the lower vent section. T wist vent component clockwise to engage and seal until arrow and dimple align. Locking Incline Channel Dim[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 13 Maintain a minimum 1" (25 mm) clearance to combustible materials for all vertical vent elements. Clearances for horizontal vent elements are 1" (25 mm) at the sides and 1" (25 mm) on the bottom. Clearances above horizontal vent elements are 3" (76 mm) for all models and all app[...]

14 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Note: Install second restrictor in any run having more than 8 ft. of vertical rise. Figure 23 - Top Vent - STRAIGHT Figure 24 - Top Vent - TWO 90 DEGREE ELBOWS VERTICAL VENT FIGURES/TABLES Note: Two 45 degree elbows may be used in place of one 90 degree elbow. The same rise to run ratios, as shown[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 15 Figure 25 - Top Vent - THREE ELBOWS Example: If 20 feet of (H) horizontal vent run is needed, then 4 feet minimum of (V) vertical vent will be required. This table shows a 1 (V) to 5 (H) ratio. For every 1 foot of (V) vertical, you are allowed 5 feet of (H) horizontal run, up to a maximum horizont[...]

16 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Vertical Rise SV4.5E90 Elbow Horizontal / Inclined Run SV4.5 HT -2 T ermination Firestop/Spacer SV4.5L6/12/24/36/48 Vent Sections Support Bracket Spacing Every 5 ft (1.52 m) See Figure 17 on page 12 for vertical vent section support. SV4.5 HT -2 T ermination Support Brackets Building Support Frami[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 17 Horizontal terminations have been designed to perform in a wide range of weather conditions. Our terminations meet or exceed industry standards. When selecting the locations of your horizontal terminations, do not place the termination where water from eaves and adjoining rooflines may create a he[...]

18 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. HORIZONTAL VENT FIGURES/TABLES Note: Two 45 degree elbows may be used in place of one 90 degree elbow. The same rise to run ratios, as shown in the venting figures for 90 degree elbows, must be followed if 45 degree elbows are used. Note: It is very important that the horizontal/inclined run be ma[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 19 Figure 30 - Top Vent - ONE 90 DEGREE ELBOW - ELBOW CONNECTION NOT DIRECTLY AT APPLIANCE See Table 3 as an aid in venting component selection for a particular range of exterior wall thicknesses. Square termination (SV4.5HT- 2 ) shown. Example: If 20 feet of (H) horizontal vent run is needed, then 4[...]

20 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Example: If 20 feet of (H) horizontal vent run is needed, then 4 feet minimum of (V) vertical vent will be required. This table shows a 1 (V) to 5 (H) ratio. For every 1 foot of (V) vertical, you are allowed 5 feet of (H) horizontal run, up to a maximum horizontal run of 20 feet. Example: If 20 fe[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 21 GEAR CLAMPS Adapter (SV4.5RF) Apply ONL Y MIL-PAC BLACK HIGH TEMPERA TURE SEALANT (Catalog No. 10K81) to the outside surface of both collars of the adapter (be especially careful to fill the grooves of the outer collar to be covered by the flexible pipe) and slide flexible pipe over inner and oute[...]

22 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Step 4. FIELD WIRING Caution: Label all wires prior to disconnec- tion when servicing controls. Wiring errors can cause improper and dangerous opera- tion. Verify proper operation after servicing. Refer to Section A for millivolt appliances and Section B for electronic appliances. The gas valve is[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 23 Figure 39 Step 5. CONNECTING GAS LINE All codes require a shut-off valve mounted in the supply line. The orientation of the shut- off valve should face the front, as shown in Figure 39 . Figure 38 illustrates the method for connecting the gas supply. The flex-line method is acceptable in the U.S.,[...]

24 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Figure 40 Door Assembly Gas Line Access Panel Bottom Panel Burner Assembly Figure 42 - Figure 41 INSTALLING THE GLASS DOOR ELECTRONIC Pilot Hood Sensor Ignitor MILLIVOL T Thermocouple Hood Ignitor Rod 3/8" Min (9 mm) Thermopile Pilot Nozzels Step 6. INSTALLING THE LOGS, GLOW- ING EMBERS AND V[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 25 Figure 43 Figure 44 Burner Adjustment Step 9. BURNER ADJUSTMENTS Flame Appearance and sooting Proper flame appearance is a matter of taste. Generally, most people prefer the warm glow of a yellow to orange flame. Appliances operated with air shutter openings that are too large will exhibit flames [...]

26 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 17" 14" Min. Distance T o Unprotected Side Wall 8-1/4" 45 ° Combustible Materials Allowed In Shaded Area “Safe Zone” 12" 5" Min. Distance T o Protected Side Wall T op View Of Fireplace Side Wall Side Wall Combustible materials may project beyond the sides of the firep[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 27 INSTALLATION ACCESSORIES CONTINUED d e t s i L x e l F e r u c e S s t n e n o p m o C ™ . t a C . o N l e d o M . o N n o i t p i r c s e D . r e t p a d a x e l f d n a s p m a l c r a e g , r e c a p s / p o t s e r i f e d u l c n i s t i k n o i t a n i m r e t e s e h T 9 6 9 1 H2 - T H 5 [...]

28 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Figure 47 Burner Assembly Gas Valve Assembly Orifice Air Adjustment Arm In Canada: THE CONVERSION SHALL BE CARRIED OUT IN ACCORDANCE WITH THE REQUIREMENTS OF THE PROVINCIAL AUTHORITIES HAVING JURISDICTION AND IN ACCORDANCE WITH THE REQUIREMENTS OF THE CAN1-B149.1 AND .2 INSTALLATION CODE. LA CONVE[...]

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 29 Pressure Regulator Remove These Components Pilot Orifice Figure 51 Figure 50 Figure 52 Figure 49 Figure 48 Note: If the ignitor is damaged, a replacement kit is available, order Catalog Number 87L54. Electronic Appliances Step 7. Dexen Electronic Valves - See Figure 50 and the instructions provide[...]

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32 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. Printed in U.S.A. © 2007 by Lennox Hearth Products P/N 850,043M REV. F 09/2008 Lennox Hearth Products reserves the right to make changes at any time, without notice, in design, materials, specifications, prices and also to discontinue colors, styles and products. Consult your local distributor fo[...]