Hearth and Home Technologies I60, I80 owner manual Using Offsets/Returns, Example

Page 28

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.

ÎTable 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

48

 

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

7 3

 

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.

28

Heatilator • I60, I80 • 4013-250 • Rev C • 11/08

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Contents
Hot screen/mesh and glass doors will cause burns Wood Burning FireplaceFire Risk Grate Listing Label Information/LocationNumber Installer Guide Table of ContentsUser Guide Warranty Hearth & Home Technologies Limited Warranty CONDITIONS, Exclusions & Limitation of LiabilityHeatilator I60, I80 4013-250 Rev C 11/08 Listing and Code Approvals Appliance CertificationNon-Combustible Materials Combustible MaterialsYour Fireplace Operating InstructionsHot glass will cause burns Seasoned Wood Starting a FireGrate FirescreenGlass Doors Vented Gas Log Sets & Gas Log LightersOptional Components Clear SpaceWood Fuel Maintainance and Service Chimney Inspection/CleaningDisposal of Ashes Creosote Formation and Need for RemovalGlass Cleaning Check Firebox RefractoryInspect Grate Frequency As desiredTroubleshooting Guide Start Fire Problems Possible Cause SolutionGetting Started Typical Fireplace SystemDraft Design and Installation ConsiderationsNegative Pressure Locating Fireplace & Chimney Frequently open doors Central heat outlets or returnsFireplace System Requirements Tools and Supplies NeededInspect Fireplace and Components Framing & Clearances Select Fireplace LocationClearances Clearances to Combustible MaterialsSidewalls/Surrounds Frame the FireplaceInstallation of Fireplace Unpack the Fireplace I80 onlyThings to Consider Unpack the Fireplace I60 onlyPosition the Fireplace I80 only Removing Smoke ShieldInstall the Refractory I80 only GAS Knockout Place Protective Metal Hearth Strips Level FireplaceInstall Outside Air Kit YESChimney Assembly Chimney Requirements Height of Chimney ComponentsUsing Offsets/Returns ExampleInstall Chimney Air Kit Assemble Chimney SectionsInstall Ceiling Firestops Installing the Ceiling FirestopInstall Attic Insulation Shield 330 mmComplete Installation Install FlashingFollowing steps should be skipped if using a chase Cut out Hole in RoofChimney Termination Requirements Flat RoofsChase Installations Construct the ChaseInstall Fireplace & Chimney Install Chase TopInstall Termination Cap ST1175/ST475 Square Termination CapTCT1175 Terra Cotta Cap Shrouds Radiation ShieldField Constructed Shrouds Open Top Shroud TR11/TR11T caps require radiation shieldMailbox Style Shroud radiation shield required Roofed Style Shroud radiation shield requiredHearth Extension Finishing= 1/k x inches of thickness Raised Hearth Extension Framing Hearth Extension ConstructionNon-combustible Sealant Flush Hearth Extension FramingFinishing Material Noncombustible FacingCombustible Mantel 19 3/4 502 mm Accessories Gas Log/Lighter ProvisionWood Burning Inserts Gas Code, Ansi Z223.1Fireplace Dimensions Reference Materials13 mm Chimney Components Catalog #15-1/4 387 mm 15-3/4 400 mm CT56 Chase Top LDS33/LDS46 Decorative Shroud This page intentionally left blank Parts Icon I60CT, I60HParts Contact Information
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