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Lennox Hearth 850,057M - page 1
Wood-Burning Fireplace P/ N 8 50 ,0 57 M R EV . E 0 6/ 20 10 CAMBRIA MODEL CAMBRIA™ This installation manual will enable you to obtain a safe, efficient and dependable installation of your fireplace system. Please read and understand these instructions before beginning your installation or operating the fireplace. CAUTION: Do not alter or modi ...
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Lennox Hearth 850,057M - page 2
2 W ARNING T o avoid the risk of damaging fireplace materials and increas- ing the risk of fire, do not use the fireplace to cook or warm food. CAUTION NEVER use gasoline, gasoline- type lantern fuel, kerosene, charcoal lighter fluid, naphtha, engine oil or similar liquids to start or “freshen up” a fire in this fireplace. Keep any flamm ...
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Lennox Hearth 850,057M - page 3
THE FIREPLACE INTRODUCTION The Cambria™ wood-burning fireplace is a mid-efficient, heat radiating fireplace. Y ou will receive a lifetime of comfort and enjoyment from your fireplace provided it is installed, maintained and operated properly . • Please read these instructions and retain this manual for future reference. • Before beginning ...
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Lennox Hearth 850,057M - page 4
Accelerated Combustion The maximum heat output for the Cambria fireplace is achieved by burning with the door closed and the combustion air opened. How- ever , it will be necessary to reload with wood every hour . This is the least efficient method of burning the Cambria fireplace . Use caution when burning with the combustion air control wide o ...
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Lennox Hearth 850,057M - page 5
Building a Fire A) T o start a fire, place several crumpled up balls of newsp aper in the firebox. Place small dry pieces of kindling on top of the paper , criss-crossing the kindling so that there are air spaces in between. The kindling should be placed at the center of the firebox so as to allow for sufficient air circulation. B) Open the dam ...
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Lennox Hearth 850,057M - page 6
IMPORT ANT CAUTIONS A. Do not block the hot air vents to the fire- place as this will cause the fireplace to overheat. B. Never use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter fluid, or similar liquids to start or ‘freshen up’ a fire in this fireplace. Keep all such liquids well away from the fireplace while it is in ...
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Lennox Hearth 850,057M - page 7
Figure 6 The gaskets’ air -tightness can be adjusted us- ing the adjustment screw located on the slider stoppers (see Figure 8 ) . T urning the screws clockwi se will shorten the travel of the slider and increase the pressure on the door side gaskets. This may lead to the doors being harder to lock, so a good adjustment must be found between a go ...
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Lennox Hearth 850,057M - page 8
Gasket Part # Dimensions Qty Around the door PR-SR1823N 58-3/4” 5/8” dia. 2 T able 1 Figure 10 Figure 11 Unscrew the nuts to change the bearings Door Angle (hang) Adjustment Screw NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 8 GLASS CARE Glass Replacement The glass used for the Cambria™ fireplace is a high temperature ceramic glass ...
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Lennox Hearth 850,057M - page 9
FIREPLACE INST ALLA TION Locating The Fireplace The best location to install your fireplace is determined by considering the location of windows, doors, and the traffic flow in the room where the fireplace is located, allowing space in front of the unit for the hearth extension and the mantel, and taking into consideration the loca- tion of the ...
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Lennox Hearth 850,057M - page 10
Figure 14 - Hearth Extension and Clearances Fireplace Figure 13 - Hearth Extension Requirements Framing, Facing And Mantel The construction of the framing, facing, and mantel must be in accordance with the stan- dards and the following illustrations ( Figures 15 through 20 ): A. Frame the fireplace using 2” x 3” or heavier lumber . B. WARNING: ...
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Lennox Hearth 850,057M - page 11
No t es Due to Lenn ox Hear th Prod uc ts ongo ing com mit me nt to qual it y , all spe cifi ca tio ns , ra tin gs and dime ns ion s are s ubj ec t t o cha ng e w it hou t not ic e. All fram in g dime ns ion s cal cul at ed for 1/2 " dry wall at the fir ep lac e f ac e. If she at hin g t he ch ase or fin ish - ing with othe r thi ck nes s m ...
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Lennox Hearth 850,057M - page 12
Nailing Flanges Four nailing flanges are provided to secure the fireplace to the floor (see figure below). Bend the nailing flanges down so that each flange is flush with the floor , then using nails or screws, secure the fireplace to the floor (2 places each side). The heads of the screws or nails must be large enough to completely cover ...
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Lennox Hearth 850,057M - page 13
Optional Fireplace Blower (UZY5) A heat activated blower is sold as an option. It is designed to be located in the back of the fireplace and increase the air flow around the firebox. It uses regular 120V and must be connected to the main electrical circuit by a qualified electrician. An electrical box must be installed outside the fireplace. W ...
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Lennox Hearth 850,057M - page 14
Figure 23 Figure 21 HOT AIR DUCTING INST ALLA TION (OPTIONAL) Diff eren t hot air ducti ng system s can be install ed with the Cambria™ fireplace: • Gravity kit • Forced air kit The gravity kit is used when the rooms are on same level or floor as the fireplace or on an up- per level or floor . If the heat to be distributed is on a lower l ...
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Lennox Hearth 850,057M - page 15
Figure 24 Figure 25 Aluminum T ape Insulation Blower Tightening Collar Flex 5” Diameter Adaptor Insulated Flex Pipe B) Attach the 5” flexible pipe, using the collars provided. Important: Make sure that the plastic wrapping around the flexible pipe will not be in contact with the fireplace. C) Route the flexible pipe to the chosen location. ...
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Lennox Hearth 850,057M - page 16
OUTSIDE CONNECTION Outside Intake Screw Opening Facing Down Wall Aluminum T ape Plastic Cover Insulation Flexible Pipe Aluminum T ape OUTSIDE AIR It is mandator y to install an outside air connec- tion to the Cambria™ fireplace. The following components are required and are included with the fireplace: • Outside air kit • 4” adapter for ? ...
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Lennox Hearth 850,057M - page 17
Figure 28 THE CHIMNEY SYSTEM Chimney Installation Notes 1. If possible, install an interior chimney as it will provide better perfor - mance. In areas with continuous temperatures below 0°F (-18°C), the use of an exterior chimney increases the likelihood of operating problems such as low draft, high rate of creosoting, and poor start-up character ...
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Lennox Hearth 850,057M - page 18
Figure 31 Flashing Attic Radiation Shield Firestop Universal Support AC Starter Section AC10SB or AC10SB30 Note: Outside air kits must be installed for both fireplace and AC chimney . Ou ts id e Co mb us tio n Ai r Ki t From below, install a firestop in each ceiling/ floor separation through which the chimney will pass. At the attic level, insta ...
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Lennox Hearth 850,057M - page 19
Roof Down Slope Hole Size D e gr e e O f S l o pe S e cu r e T em p AS HT + N o va T e m p HT 61 03 + A C R o of P i tc h 1 0 ” 10 ” 0 * 1 6 -3 / 8 ” ( 4 16 m m) 1 7 ” ( 4 32 m m) 2 / 12 1 6 - 5/ 8 ” ( 4 2 2 m m ) 1 7 -1 / 4 ” ( 4 38 m m) 4 / 12 1 7 - 1/ 4 ” ( 4 3 9 m m ) 1 8 ” ( 4 57 m m) 6 / 12 1 8 - 3/ 8 ” ( 4 6 6 m m ) 1 9 ” ...
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Lennox Hearth 850,057M - page 20
C h i mn ey Elbow Offset & Height One Length Between Elbows T wo Lengths Between Elbows 8” 12” 18” 24” 36” 48” 8” & 48” 1 2 ” & 4 8 ” 18 ” & 4 8” 2 4 ” & 4 8” 36” & 48” 48” & 48” AS HT + HT 61 03 + 10 ” 15º A 3” (7 6mm ) 4- 1/4 ” (1 08m m ) 5- 3/4 ” (1 46m m ) 7- 1/4 ” (1 84 ...
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Lennox Hearth 850,057M - page 21
Figure 35 OFFSET CHIMNEY INST ALLA TION Rain Cap Collar Roof Flashing Offset Support Insulated Wall Radiation Shield Framing 2” x 3” Figure 36 Roof Support Note: In cold areas it is recommended to protect the chimney in a insulated chase. Outside Wall OFFSET CHIMNEY INST ALLA TION WITH WALL PENETRA TION IF THE CEILING IS 9 FEET OR LESS THIS INS ...
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Lennox Hearth 850,057M - page 22
RSMI30, RSMI45, AC10RSMI30 Ch im ne y ( 10 ” di a. ) Angle Hole Dimension Secure T emp ASHT+ Nova T emp HT6103+ 30º 17 -9 /1 6” x 45 - 3/ 4” ( 44 6 m m x 11 62 m m) Secure T emp ASHT+ Nova T emp HT6103+ 45º Canada only 17 -1 /2 ” x 3 0” (4 44 m m x 7 62 mm ) AC 30º 17 ” x 42 - 1/ 2” (4 32 m m x 10 80 m m) T able 5 Figure 37 Drywall ...
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Lennox Hearth 850,057M - page 23
Installation Accessories Description Cat./Part No. Outside Air Kit (included with fireplace) Outside air kit, UZI UZI UZ I ou ts i de a ir k it fi re pl ac e ad ap to r , UZ IA D UZ IA D Gravity Kit G ra vi ty Ki t , Co m p l et e do ub l e du c t i n g sy s t em in cl u d i n g : 2 el b o w s 90 º , 2 t el es co p ic l en g t hs , 2 g r i ll s ...
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Lennox Hearth 850,057M - page 24
CHIMNEY - P ARTS AND COMPONENTS LISTS S e c u r e T em p AS H T+ 1” Hi g h T em p. I ns u la t e d S ta i n le s s S t ee l Ch i mn e y 10” I.D., Double-Wall Stainless Steel, Listed to CAN/UCL-S604 & UL-103HT Description Part/Cat. No. Lengths and Misc. Chimney Components 8” length, 10” Dia., 10L8-N 10L8-N 12” length, 10” Dia., 10L12 ...
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Lennox Hearth 850,057M - page 25
CLEARANCE TO COMBUSTIBLES The following clearances meet the minimum requirements for a safe installation: • Side wall (fireplace front): 24” (457 mm) measured from the fireplace door . • Ceiling: 7’ 6” (2286 mm) measured from the base of the fireplace • Fireplace enclosure: Bottom: 0” Side: 0” to spacer Back: 0” to spacer T op: ...
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Lennox Hearth 850,057M - page 26
Printed in Canada © 2008 by Lennox Hearth Products P/N 850,057M REV . E 06/2010 Lennox Hearth Products reser ves 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 for fireplace code information. 1508 Elm Hill Pike ...
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