Hearth and Home Technologies ST42A Using Offsets/Returns, SL1106 SL1112 SL1118 SL1136 SL1148

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B. Using Offsets/Returns

To bypass any overhead obstructions, the chimney may be offset using a 30-deg (SL1130) offset/return.

An offset and return may be attached together or a chimney section(s) may be used between an offset and return.

Perform the following steps to determine the correct chim- ney component combination for your particular installation:

WARNING

Fire Risk

•Draft will be restricted if offset/returns greater than 30° are used.

•Measure how far the chimney needs to be shifted to enable it to avoid the overhead obstacle. See Figure 5.3. Use dimension “A” to determine chimney section required to achieve the needed shift.

•After determining the offset dimension, refer to Table 5.2 and fi nd the “A” dimension closest to but not less than the distance of shift needed for your installation.

•The “B” dimension that coincides with the “A” dimension represents the required vertical clearance that is needed to complete the offset and return.

•Read across the chart and fi nd the number of chimney sections required and the model number of those particular chimney parts.

•Whenever the chimney penetrates a floor/ceiling, a firestop spacer must be installed.

•The effective height of the fireplace assembly is measured from the base of the fireplace to the top of the starter collar. See Dimensions in Section 12.

Table 5.2

AB

in.

mm

in.

mm

SL1106

SL1112

SL1118

SL1136

SL1148

3-7/8

98

14-1/2

368

-

-

-

-

-

6-1/4

159

18-5/8

473

1

-

-

-

-

 

 

 

 

 

 

 

 

 

9-1/4

235

23-3/4

578

-

1

-

-

-

12-1/4

311

29

737

-

-

1

-

-

 

 

 

 

 

 

 

 

 

14-5/8

371

33

838

-

2

-

-

-

17-5/8

448

38-1/4

972

-

1

1

-

-

 

 

 

 

 

 

 

 

 

21-1/4

540

44-5/8

1133

-

-

-

1

-

23-5/8

600

48-3/4

1238

1

-

-

1

-

27-1/4

692

55-3/4

1416

-

-

-

-

1

 

 

 

 

 

 

 

 

 

29-5/8

752

59

1499

1

-

-

-

1

32-5/8

829

64-1/4

1632

-

1

-

-

1

 

 

 

 

 

 

 

 

 

35-5/8

905

69-1/2

1765

-

-

1

-

1

38

965

73-5/8

1870

-

2

-

-

1

 

 

 

 

 

 

 

 

 

41

1041

78-3/4

2000

-

1

1

-

1

44-5/8

1133

85

2159

-

-

-

1

1

 

 

 

 

 

 

 

 

 

47

1194

89-1/8

2264

1

-

-

1

1

 

 

 

 

 

 

 

 

 

50-5/8

1286

95-1/2

2426

-

-

-

-

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.

A

B

1-1/4 in. (32 mm)

OVERLAP

Figure 5.3 Chimney Offset/Return

Example: Your “A” dimension from Figure 5.3 is 14-1/2 in. (368 mm). Using Table 5.2 the dimension closest to, but not less than 14-1/2 in. (368 mm) is 14-5/8 in. (371 mm) using a 30° offset/return. It is then determined from the table that you would need 33 in. (838 mm) (Dimension “B”) between the offset and return. The chimney components that best fi t your application are two SL1112s.

Heatilator • ST42A • 35038 Rev G • 02/05

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Contents Fire Risk ST42AListing Label Information/Location Homeowner Reference InformationGrate NumberTable of Contents Not intended for use as a primary heat source Listing and Code ApprovalsAppliance Certification Getting Started Design and Installation ConsiderationsNegative Pressure Asphyxiation RiskMarginal Location Typical Fireplace System Typical Fireplace SystemFire Risk Explosion Risk Tools and Supplies NeededInspect Fireplace and Components Selecting Fireplace Location Framing and ClearancesMm min ClearancesFrame the Fireplace Sidewalls/SurroundsChimney Requirements Construct the ChaseInstall the Outside Air Kit Installation of FireplaceSharp Edges Fire Risk Asphyxiation Risk Risk of Smoke SpillagePosition the Fireplace Secure the FireplacePlace the Protective Metal Hearth Strips Level the FireplaceChimney Assembly C,f SL1106 SL1112 SL1118 SL1136 SL1148 Using Offsets/ReturnsAssemble the Chimney Sections Install the Firestop SpacersSecure the Chimney Install the Attic Insulation ShieldDouble-check the Chimney Assembly Chimney Termination Complete the EnclosureChase Top Install the Chimney Air Kit required in CanadaInstalling an ST1175 Square Termination Cap Install the Termination CapGas Code, Ansi Z223.1-1980 AccessoriesGas Log/Lighter Provisions Hearth Extension Insulation Alternatives, R Value = FinishingHearth Extension Mantel Finishing MaterialGlass Doors General Information Operating InstructionsFirescreen Outside AirClear Space Near the Fireplace Flue DamperWood Fuel GrateFirewood MoistureStarting a Fire Understanding Vent Problems TroubleshootingDiagnostic Questions Diagnostics and Problem SolvingSolutions Can’t get a good fire going. What am I doing wrong?fireplace burns the wood too fast. What can I do? Chimney Inspection/Cleaning Maintenance and Servicing the FireplaceDisposal of Ashes Firebox RefractoryWhen cleaning glass door Maintenance Task ListClean Chimney FireReference Materials Fireplace DimensionsModel # Description Fireplace ComponentsCatalog # Chimney Components15-1/4 387 mm 25-1/4 641 mm 14-3/4 375 mm TR442 TR442 / 444 TV Woodburning Termination CapShroud TS345 TR342 TR342 / 344 TV TR11 / 11T TR11 / 11T TV ST42 Service PartsQty # Description of PartLimited Warranty Contact Information

ST42A specifications

Hearth and Home Technologies ST42A is a highly regarded product in the realm of home heating, known for its excellent combination of functionality, efficiency, and aesthetic appeal. This stylish gas fireplace offers the perfect blend of modern design and superior technology, making it an ideal choice for homeowners seeking both comfort and elegance.

One of the main features of the ST42A is its remarkable heating capacity. With a BTU output ranging from 26,000 to 36,000, it efficiently warms spaces, making it suitable for medium to large living areas. This gas fireplace is designed to deliver heat effectively while maximizing energy efficiency, allowing users to enjoy warmth without incurring excessive energy costs.

The ST42A comes equipped with an advanced electronic ignition system, ensuring reliable startup and operation. This system not only adds convenience but also enhances safety, as it minimizes the risk of gas leaks. The fireplace is designed to operate on natural gas or propane, offering flexibility to homeowners based on their fuel availability and preferences.

In terms of design, the ST42A boasts a contemporary look that fits seamlessly into a variety of interior styles. Its large viewing area, framed by a stylish surround, allows for an impressive flame presentation that serves as a focal point in any room. The variable flame height adjustment feature allows users to customize the ambiance and comfort level, further enhancing the overall experience.

One of the standout technologies in the ST42A is its unique heat distribution system. This feature ensures that warmth is circulated throughout the room, rather than being concentrated in one area, promoting an even temperature distribution. Additionally, the fireplace is equipped with optional blower kits that can enhance air circulation, further improving the efficiency of heat delivery.

Maintenance is another significant consideration with any heating appliance, and the ST42A simplifies this with accessible components and easy cleaning features. The ceramic glass front is designed to resist soot buildup, ensuring a clear view of the flames and reducing the need for frequent upkeep.

Overall, the Hearth and Home Technologies ST42A stands out as a premium choice for those looking to add warmth and style to their home. With its powerful heating capabilities, advanced technologies, and elegant design, it represents an investment in both comfort and aesthetic enhancement for any living space.
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