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Heatilator • ST42A Installation Manual • 4012-051 • Rev C • 10/03/13

34 in.

(864 mm)

21 3/16 in.

(538 mm)

DTS134

24 in.

(610 mm)

21 3/16 in.

(538 mm)

46 in.

(1168 mm)

DTS146

26 in.

(660 mm)

20 in.

(508 mm)

DTO134

34 in.

(864 mm)

24 in.

(610 mm)

46 in.

(1168 mm)

22 3/4 in.

(577 mm)

DTO146

26 in.

(660 mm)

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Summary of Contents for ST42A

Page 1: ...uch glass Keep children away CAREFULLY SUPERVISE children in same room as fireplace Alert children and adults to hazards of high temperatures High temperatures may ignite clothing or other flammable materials Keep clothing furniture draperies and other flammable materials away INSTALLER Leave this manual with party responsible for use and operation OWNER Retain this manual for future reference ST4...

Page 2: ...bustibles 10 C Construct the Chase 11 D Frame the Fireplace 12 E Secure and Level the Fireplace 12 F Protective Metal Hearth Strips 13 G Outside Air Kit 14 AK17 Installation 14 4 Chimney and Termination Requirements A Chimney Requirements 15 B Offsets Returns 16 C Termination Requirements 17 5 Chimney Installation A Typical Chimney System 18 B Assemble Chimney Sections 19 C Install Chimney Air Kit...

Page 3: ... 15 Attic insulation shield installed Shrouds Section 6 Pg 25 Shroud is installed properly per instructions Fi i hi S ti 7 P 27 Hearth Home Technologies recommends the following Comments communicated to party responsible 4012 052 Rev A 05 06 13 All packaging and protective materials removed Optional doors properly installed Molded brick panels installed correctly Grate is properly installed Firesc...

Page 4: ...ing ASTM E 136 Standard Test Method for Behavior of Metals in a Vertical Tube Furnace at 750 C C Combustible Materials Materials made of or surfaced with any of the following materials Wood Compressed paper Plant fibers Plastic Plywood OSB Sheet rock drywall Any material that can ignite and burn flame proofed or not plastered or un plastered 1 Product Specific Important Safety Information A Firepl...

Page 5: ...mney penetrates roof preferably without affecting roof rafters Offset Return with hanger straps Framing headed off in ceiling joists Enclosed space above and around fireplace Mantel and surround Decorative facing and trim Hearth extension Factory built fireplace Protective metal hearth strip s Outside combustion air Combustible framing header on top of V shaped standoffs Chimney system Attic insul...

Page 6: ...th local regional state and national codes and regulations Consult insurance carrier local building inspector fire officials or authorities having jurisdiction over restrictions installation inspection and permits Before installing determine the following Where the fireplace is to be installed The vent system configuration to be used Gas supply piping Electrical wiring Framing and finishing detail...

Page 7: ...ak Location NOT recommended Not the highest point of the roof Wind loading possible Multi level Roofs Windward Leeward Recommended Location Above peak Recommended Insulated exterior chase in cooler climates Recommended Location Above peak Inside heated space Location NOT recommended Too close to tree Below adjacent structure Lower roof line Avoid outside wall Marginal Location Wind loading possibl...

Page 8: ...replace and components from packaging and inspect for damage Vent system components and doors are shipped in separate packages Report to your dealer any parts damaged in shipment Read all the instructions before starting the installation Follow these instructions carefully during the installation to ensure maximum safety and benefit E Fireplace System Requirements The Heatilator fireplace system r...

Page 9: ...58 7 8 in 1496 mm effective height 38 3 8 in 975 mm 11 3 4 in 298 mm 8 5 8 in 219 mm 13 in 330 mm dia 42 in 1067 mm 23 in 585 mm 7 1 2 in 192 mm 39 1 8 in 995 mm Gas Knockout 8 3 8 in 213 mm 14 in 356 mm 8 3 8 in 213 mm 14 in 356 mm 47 in 1194 mm 28 in 711 mm 23 1 2 in 597 mm 14 in 356 mm 5 7 8 in 149 mm Figure 3 1 Fireplace Dimensions ...

Page 10: ...CLOSURE AREA Fireplace to backwall 1 2 in 13 mm Fireplace to sidewall 1 2 in 13 mm Top standoffs to header 0 in 0 mm Door opening to sidewall 12 in 305 mm MANTEL Mantel minimum height 42 1 2 in 1079 mm Maximum mantel depth 12 in 305 mm roof insulation 0 in to level of standoffs Attic Insulation Shield ceiling attic ceiling Offset Return secured with hanger straps Storm Collar Roof Flashing 3 4 in ...

Page 11: ...Tabs False Ceiling False Ceiling Insulation Insulation Figure 3 3 Chase Assembly 1 2 1 Chimney offset through exterior wall and enclosed in chase 2 Chase constructed on roof Figure 3 4 Chase Constructions The chase is constructed using framing materials much the same as the walls in your home A variety of siding materials may be used including brick stone veneer brick or standard siding materials ...

Page 12: ...inished cavity depth must be no less than 27 in 686 mm Framing must extend straight up all the way to the ceiling Caution Risk of Cuts Abrasions Wear protective gloves and safety glasses during installation Sheet metal edges are sharp Warning Risk of Fire Prevent contact with sagging loose insulation DO NOT install against vapor barriers or exposed insulation Secure insulation and vapor barriers P...

Page 13: ...1 mm under front edge of fireplace Overlap strips in the middle of fireplace opening by 1 in 25 mm minimum Metal strips must extend beyond the front and sides of the fireplace opening by at least 2 in 51 mm Figure 3 6 Protect the front of a platform elevated above the hearth extension with metal strips not included with fireplace per Figure 3 6 See Section 7 for hearth extension instructions Warni...

Page 14: ... the wall and the pipe with silicone to prevent moisture penetration and air leaks Seal between the outside air inlet hood and the house with silicone to prevent air infiltration Caution Risk of Cuts Abrasions Wear protective gloves and safety glasses during installation Sheet metal edges are sharp Caution Risk of Fire or Asphyxiation Do not draw outside combustion air from wall floor or ceiling c...

Page 15: ... shown in Figure 4 1 4 Chimney and Termination Requirements Table 4 2 Chimney Component Dimensions Table 4 1 Chimney Requirements ft meters a Minimum overall straight height 14 0 4 27 b Minimum height with offset return 16 5 5 03 c Maximum height 90 0 27 43 d Maximum chimney length between an offset and return 20 0 6 1 e Maximum distance between chimney stabilizers 35 0 10 67 f Double offset retur...

Page 16: ...turn Table 4 3 Offset Dimensions Example Your A dimension from Figure 4 2 is 14 1 2 in 368 mm Using Table 4 3 the dimension closest to but not less than 14 1 2 in 368 mm is 15 3 4 in 400 mm using a 30 offset return You determined from the table that you would need 36 5 8 in 930 mm Dimension B between the offset and return The chimney component that best fits your application is two SL1112s Note SL...

Page 17: ...llustration above B Gas Termination Cap A Perpendicular Wall If using decorative cap cover s this distance may need to be increased Refer to the installation instructions supplied with the decorative cap cover In a staggered installation with both gas and wood terminations the wood termination cap must be higher than the gas termination cap Figure 4 3 Multiple Chimney Locations C Termination Requi...

Page 18: ...ck chimney sections together firmly to resist movement Ceiling firestops are required where chimney passes through ceiling or floor Support straps for offsets not shown must be secured to adequate framing Termination Cap Storm Collar Offsets returns must be secured with the screws provided outer pipe only Attic shield Figure 5 1 Typical Chimney System Guidelines for Chimney System Installation Not...

Page 19: ...turns to chimney sections Insert the screws provided through the predrilled holes Do NOT penetrate inner flue Secure chimney returns with hanger straps provided fasten to studs or joists Vertical straight runs of chimney must be supported every 35 ft 10 7 m B Assemble Chimney Sections Use only those components described in this manual Substitute or damaged chimney components could impair safe oper...

Page 20: ...se same dimensional lumber for framing ceiling firestop and joists 2 in 51mm clearance 2 in 51mm clearance Warning Risk of Fire Do NOT seal area between firestop opening and chimney pipe except where they en ter the attic or leave the warm air envelope of the home use 600 F sealant Figure 5 4 Installing the Ceiling Firestop When offsets and returns are joined to straight pipe sec tions they must b...

Page 21: ...sulation Shield F Install Attic Insulation Shield Warning Risk of Fire You MUST install an attic insu lation shield when there is any possibility of insulation or other combustible material coming into contact with the chimney Do NOT pack insulation between the chimney and the attic insulation shield Failure to keep insulation and other materials away from chimney pipe could cause fire Do NOT offs...

Page 22: ...8 26 ga min Galvanized Chase Top Figure 5 9 Chase Top Construction H Install Chase Chase Top You MUST use a chase top in a chase installation Chase tops are available from your Heatilator dealer or may be field constructed Include a turndown and drip edge to prevent water from seeping into the chase Include a 2 in 51 mm soldered welded or spun collar around pipe opening to keep water out Provide a...

Page 23: ...een storm collar pipe and storm collar chase top Termination cap pipe and chimney section must be snapped together to maintain an overlap of 1 1 2 in 38 mm Slip storm collar around chimney pipe before termination cap pipe is snapped into the chimney pipe Figure 5 10 Installing a TR11 TR444 Round Termination Cap Note 400 Series Termination Caps available Canada ONLY Storm Collar Chimney Pipe Chase ...

Page 24: ... mm above top of chase and 7 in 178 mm below top of chase 2 in 51 mm 7 in 178 mm Figure 5 13 Installing a TCT1175 Terra Cotta Cap Storm Collar Chimney Pipe Chase Top Termination Cap not shown Chase 14 1 2 in 368 mm Maximum Collar 2 in 51 mm Minimum Height Caulk gaps between storm collar pipe and storm collar chase top Do NOT block air holes 3 clip brackets Slip over chase collar and attach with sc...

Page 25: ...cted shroud designs have been tested for HHT fireplace systems and termination caps 3 in 76 mm minimum Min Base Dim Min Base Dim Min Top Dim Min Top Dim Min Opening Width Min Opening Width Radiation Shield 14 1 2 in 368 mm maximum height Figure 6 2 Open Top Shroud Dimensions TR11 11T TR11 11T TV Min Base Dims in 32 x 32 26 x 26 mm 813 x 813 660 x 660 Radiation Shield Required Min Top Dims in 29 x ...

Page 26: ...mination Cap Chase Top Radiation Shield 3 in 76 mm Radiation Shield Height Termination Cap Figure 6 5 Roofed Style Shroud Dimensions 3 Roofed Style Shroud Radiation shield required 2 Mailbox Style Shroud Radiation shield required TR11 11T TR11 11T TV Min Base Dims in 34 x 34 mm 864 x 864 Min Height Above Bottom of Termination Cap in 23 mm 584 Min Opening Width in 28 mm 711 Min Opening Height in 12...

Page 27: ... facing to prevent cold air leaks Large gaps can be bridged with fiberglass rope gasket Only non combustible materials may be used to cover the metal fireplace front Metal strips are placed 2 in 51 mm under the front of the fireplace and must extend beyond the front and sides of fireplace opening by 2 in 51 mm Continuous non combustible sealant Floor constructed of wood or other combustible materi...

Page 28: ...e Refer to Table 7 2 for hearth extension insulation alternatives Warning Risk of Fire Hearth extensions are to be installed only as illustrated to prevent high temperatures from occurring on concealed combustible materials Warning Risk of Fire Maintain clearances Use only non combustible material below standoffs material such as cement board is acceptable Framing or finishing material used on the...

Page 29: ...ng Non combustible flooring a minimum of 20 in 508 mm in front of and 12 in 305 mm to each side of the fuel opening is required The hearth framing must be constructed of non com bustible materials such as metal framing or equivalent material and placed on HX3 s HX4 s or equivalent material See Figures 7 4 and 7 5 When creating the platform allow for the thickness of the non combustible finishing m...

Page 30: ...between the hearth extension and the front of the fireplace with a bead of non combustible sealant or grout Platform must be built to raise the bottom of the fireplace opening to the level of the desired hearth height Protective Metal Hearth Strips Floor and platform constructed of wood or other combustible material Continuous non combustible sealant Tile stone or other non combustible finishing m...

Page 31: ...of noncombustible sealant must be used to close off any gaps at the top and sides between the fireplace and hearth WARNING Risk of Fire Hearth Home Technologies is not responsible for discoloration cracking or other material failures of finishing materials due to heat exposure or smoke Choose finishing materials carefully Non combustible Sealant Figure 7 9 Place Non combustible Sealant ...

Page 32: ...orative front Combustible trim must not cover the metal surfaces of the fireplace where the non combustible board is placed over the metal surfaces the space between the metal face of the fireplace and framing members 7 ft 2134 mm minimum base of fireplace to ceiling Combustible Wall 2 x 4 stud wall Standoffs Measured from top of fireplace opening 12 in 305 mm 1 1 2 in 38 mm maximum Mantel 6 in 15...

Page 33: ... mm FLUSH FRONT 4 in 102 mm BRICK FRONT 5 0 a n g l e 39 angle Gridlines at 1 in scale Figure 7 11 Mantel Leg Surround or Wall Projection acceptable on both sides of opening E Sidewalls Surrounds Locate adjacent combustible sidewalls a minimum of 12 in 305 mm from fireplace opening Mantle leg surround stub wall whether combustible or non combustible may be constructed as shown below ...

Page 34: ...s logs Damper must be locked fully open when gas logs are installed A certified gas log lighter or decorative gas log set can be installed in this fireplace Maximum input is 100 000 BTU hr Decorative gas appliance must be certified to ANSI Z21 60 Standard for Decorative Gas Appliances for Installation in Vented Fireplaces Must be installed in accordance with the National Fuel Gas Code ANSI Z223 1 ...

Page 35: ...0 deg FS538 FS538 Ceiling Firestop Straight FS540 FS540 Ceiling Firestop 30 deg AS10 AS10 Straight Attic Insulation Shield 24 in 610 mm JB577 JB577 Chimney Joint Band CB576 CB576 Chimney Bracket RF570 RF570 Roof Flashing Flat to 6 12 Pitch RF571 RF571 Roof Flashing 6 12 to 12 12 Pitch TR11 TR444 Round Termination Cap TR11T TR442 Round Telescoping Termination Cap TV11T Top Vent Round Termination Ca...

Page 36: ...2 in 51 mm 13 in 330 mm A B 17 in 432 mm RF570 Roof Flashing RF571 Roof Flashing 39 7 8 in 1013 mm 28 in 711 mm 15 1 4in 387 mm 25 1 4 in 641 mm 29 in 737 mm 15 1 4 in 387 mm SL1130 SL430 Offset Return 21 in 533 mm Inside Diameter SL1100 11 in 279 mm SL400 10 in 254 mm Outside Diameter 13 in 330 mm CT 11A 15 3 4 in 400 mm TR11 TR444 Round Termination Cap Catalog A B FS538 0 deg 17 in 432 mm FS540 ...

Page 37: ... Termination Cap ST1175 ST475 Square Termination Cap TCT1175 Terra Cotta Cap 32 3 8 in 822 mm 34 3 8 in 873 mm 23 in 584 mm 19 in 483 mm 15 5 8 in 397 mm 9 3 8 in 238 mm 10 1 4 in 260 mm 17 in 432 mm 20 in 508 mm 31 3 4 in 806 mm 34 5 8 in 879 mm TR TVK Top Vent Kit TV11T Round Termination Cap ...

Page 38: ...n Manual 4012 051 Rev C 10 03 13 34 in 864 mm 21 3 16 in 538 mm DTS134 24 in 610 mm 21 3 16 in 538 mm 46 in 1168 mm DTS146 26 in 660 mm 20 in 508 mm DTO134 34 in 864 mm 24 in 610 mm 46 in 1168 mm 22 3 4 in 577 mm DTO146 26 in 660 mm ...

Page 39: ...See your Heatilator dealer for a complete list of optional components DM1242 Bi fold doors with black trim DM1242S Bi fold doors with stainless steel trim A B C D LDS33 LDS46 Decorative Shroud E D A C B LDS BV Decorative Shroud Catalog A B C D in mm in mm in mm in mm LDS33 36 914 36 914 8 5 216 11 279 LDS46 48 1219 72 1829 8 5 216 11 279 Catalog A B C E E LDS BV in 26 12 5 15 5 22 23 mm 660 318 39...

Page 40: ...13 Heatilator a brand of Hearth Home Technologies 7571 215th Street West Lakeville MN 55044 www heatilator com Please contact your Heatilator dealer with any questions or concerns For the location of your nearest Heatilator dealer please visit www heatilator com ...

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