Hearth and Home Technologies HST-48D owner manual Using Offsets/Returns, Example

Page 26

B. Using Offsets/Returns

•Use an offset/return to bypass overhead obstructions.

•An offset and return can be used as a single entity or separated by chimney section(s).

WARNING! Risk of Fire! DO NOT use offset/returns greater than 30°. Chimney draft will be restricted and could cause overheating and fire.

•Measure the shift needed to avoid the overhead obstruction. Refer to dimension A in Figure 8.3.

•Find the appropriate A dimension listed in Table 8.2.

•The B dimension coinciding with the A dimension measurement in Table 8.2 represents the required vertical clearance needed to complete the offset/return.

•Read across the chart to find the number of chimney sections/model numbers needed between the offset and return.

A

B

1-1/4 in. (32 mm)

OVERLAP

Figure 8.3 Chimney Offset/Return

Example:

Your “A” dimension from Figure 8.3 is 14 1/2 in. (368 mm). Using Table 8.2 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.

Table 8.2

 

A

 

B

SL1106

SL1112

SL1118

SL1136

SL1148

in.

 

mm

in.

 

mm

SL406

SL412

SL418

SL436

SL448

4 7/8

 

124

17 7/8

 

454

-

-

-

-

-

7 1/4

 

184

22

 

559

1

-

-

-

-

9 3/4

 

248

26 1/8

 

664

2

-

-

-

-

10 1/4

 

260

27 1/4

 

692

-

1

-

-

-

12 3/4

 

324

31 3/8

 

797

1

1

-

-

-

 

 

 

 

 

 

 

 

 

 

 

13 1/4

 

337

32 3/8

 

822

-

-

1

-

-

15 3/4

 

400

36 5/8

 

930

-

2

-

-

-

 

 

 

 

 

 

 

 

 

 

 

18 1/8

 

460

40 3/4

 

1035

1

2

-

-

-

18 3/4

 

476

41 3/4

 

1060

-

1

1

-

-

21 3/4

 

552

4 7

 

1194

-

-

2

-

-

 

 

 

 

 

 

 

 

 

 

 

22 1/4

 

565

4 8

 

1219

-

-

-

1

-

24 3/4

 

629

52 1/8

 

1324

1

-

-

1

-

 

 

 

 

 

 

 

 

 

 

 

27 3/4

 

705

57 3/8

 

1457

-

1

-

1

-

28 1/4

 

718

58 3/8

 

1483

-

-

-

-

1

 

 

 

 

 

 

 

 

 

 

 

30 3/4

 

781

62 1/2

 

1588

1

-

-

-

1

33 3/4

 

857

67 3/4

 

1721

-

1

-

-

1

 

 

 

 

 

 

 

 

 

 

 

36 3/4

 

933

73

 

1854

-

-

1

-

1

 

 

 

 

 

 

 

 

 

 

 

39 3/4

 

1010

78 1/8

 

1984

-

-

-

2

-

41 1/8

 

1045

82 3/8

 

2092

1

-

-

2

-

 

 

 

 

 

 

 

 

 

 

 

45 3/4

 

1162

88 1/2

 

2248

-

-

-

1

1

48 1/8

 

1222

92 3/4

 

2356

1

-

-

1

1

 

 

 

 

 

 

 

 

 

 

 

51 3/4

 

1314

98 7/8

 

2511

-

-

-

-

2

Proper assembly of air cooled chimney parts results in an overlap of chimney joints of 1-1/4 in. (32 mm). Effective length is built into this table.

Note: SL400 series pipe available for Canada ONLY.

26

Heat & Glo • HST-48D US-CAN • 4012-040 • Rev F • 11/08

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Contents Hot screen/mesh and glass doors will cause burns Wood Burning FireplaceOperation Fire RiskNumber Listing Label Information/LocationGrate User Guide Table of ContentsInstaller Guide Warranty Hearth & Home Technologies Limited Warranty CONDITIONS, Exclusions & Limitation of LiabilityHeat & Glo HST-48D US-CAN 4012-040 Rev F 11/08 Non-Combustible Materials Listing and Code ApprovalsAppliance Certification Combustible MaterialsHot glass will cause burns Operating InstructionsYour Fireplace Grate Seasoned WoodStarting a Fire FirescreenOptional Components Glass DoorsVented Gas Log Sets & Gas Log Lighters Clear SpaceWood Fuel Hardwood vs SoftwoodDisposal of Ashes Maintainance and ServiceChimney Inspection/Cleaning Inspect Grate Glass CleaningCheck Firebox Refractory Frequency As desiredTroubleshooting Guide Start Fire Problems Possible Cause SolutionGetting Started Typical Fireplace SystemNegative Pressure Design and Installation ConsiderationsDraft Locating Fireplace & Chimney Frequently open doors Central heat outlets or returnsInspect Fireplace and Components Tools and Supplies NeededFireplace System Requirements 1676 mm Hearth Framing & ClearancesSelect Fireplace Location Clearances Clearances to Combustible MaterialsSidewalls/Surrounds Frame the FireplacePosition the Fireplace Installation of FireplaceThings to Consider Place Protective Metal Hearth StripsFt min. from top of uppermost chimney section to air inlet YESOutside Air Install Outside Air KitHood Wire Ties Chimney Assembly Maintain minimum height of chimney above roofChimney Requirements C,fUsing Offsets/Returns ExampleInstall Chimney Air Kit Assemble Chimney SectionsInstall Ceiling Firestops Installing the Ceiling FirestopInstall Attic Insulation Shield 330 mmCut out Hole in Roof Complete InstallationInstall Flashing Chimney Termination Requirements Flat RoofsChase Installations Construct the ChaseInstall as per Sections 7 Install Fireplace & ChimneyInstall Chase Top Caulk all seams to prevent leaks Refer to FigureInstall Termination Cap ST1175/ST475 Square Termination CapInstalling a TCT1175 Terra Cotta Cap TCT1175 Terra Cotta CapField Constructed Shrouds ShroudsRadiation Shield Mailbox Style Shroud radiation shield required = 1/k x inches of thickness FinishingHearth Extension High temperature sealant Finishing MaterialFireplace opening 1194 mm Width of fireplace 305 mm Combustible MantelWood Burning Inserts AccessoriesGas Log/Lighter Provision Gas Code, Ansi Z223.1Heat & Glo HST-48D US-CAN Fireplace DimensionsReference Materials Rev F 11/081676 mm 508 mm 13 mm 457 mm Chimney ComponentsCatalog # Inside Diameter39-7/8 711 mm 51 mm25-1/4 14-3/4 375 mm 584 mm Service Parts HST-48DDo not Discard this Manual

HST-48D specifications

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