12

4.Determine amount of chimney height re- quired by subtracting total combined height of all pre-selected components (fireplace and chimney components from total desired height.)

Reference Vertical Elevation Chart and deter- mine the number of chimney sections (quantity and length) required.

SPECIAL OFFSET INSTRUCTIONS

To clear any overhead obstructions, you may offset your chimney system using Security's 30° offset and return elbows. Use two elbows - an offset elbow to initiate the offset and a return elbow to terminate it. A 30° offset elbow, an- gling in any direction, may be the first compo- nent used off the top of the fireplace flue collar.

The offset and return elbows may be attached together, or a section or sections of chimney may be used between, but do not exceed 20' in total length between elbows. If sections of pipe exceed 10' between elbows, a chimney stabilizer must be used at the midpoint (Figure 37 ). The stabilizer support straps must be attached under tension (in shear) to structural framing mem- bers above. When two sets of elbows are used, the maximum combined length of chimney used between elbows cannot exceed 20' (Figure 38 ). Example: If C1 = 10' then C2 cannot exceed 10'.

If an offset exceeds 6' in length, each chimney joint beyond the first 6' of offset to the return elbow, must be secured by a No. 8 x 1/2" sheet metal screw located at the underside of the joint (Figure 39 ).

A 1/8" diameter hole must be drilled in the chimney joint using a 1/8" diameter drill. Hole should be drilled in center of joint overlap (Fig- ure 40 ). Be sure to drill only through the outer chimney casting. Do not puncture the inner flue.

Maximum offset of chimney system is 30° . Two offsets must not be assembled to form a 60° offset. However, two sets of offset and return elbows may be used on a single flue system, provided the total height of the system exceeds 25'.

Return elbow support straps must be securely attached under tension (in shear) to structural framing members above. Do not substitute a FTF8-30 offset elbow in place of a FTF8-E30 return elbow.

OFFSET CALCULATIONS

Step 1. Use Offset Chart to determine amount of horizontal offset (A) and height (B) for vari- ous chimney section assemblies.

Step 2. Use “Height of Chimney Only” column

 

Step 3. Use Elevation Chart as job estimator

in The Vertical Elevation Chart to determine

 

only. Add necessary firestop spacers and stabi-

combinations of chimney used above return

 

lizers as required. Firestop spacers must be

elbow to achieve desired heights. Reference

 

used as shown in Figures 23 and 24 and

Components Effective Height Chart in vertical

 

stabilizers as shown in Figure 29.

 

 

elevation chart section.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FTF8 VERTICAL

ELEVATION CHART

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Height Of

 

 

Number Of FTF8

 

 

 

 

Height Of

 

 

Number Of FTF8

 

 

Chimney Only

 

Chimney Lengths

 

 

 

Chimney Only

 

Chimney Lengths

 

 

Inches

Feet/Inches

12"

18"

36"

48"

 

Inches

Feet/Inches

12"

18"

36"

48"

 

 

11

 

0

11

 

1

0

0

0

 

 

386

¹⁄₂

32

2

¹⁄₂

0

1

0

8

 

 

17

 

1

5

 

0

1

0

0

 

 

390

³⁄₄

32

6

³⁄₄

2

0

0

8

 

 

21

¹⁄₄

1

9

¹⁄₄

2

0

0

0

 

 

396

³⁄₄

33

0

³⁄₄

1

1

0

8

 

 

27

¹⁄₄

2

3

¹⁄₄

1

1

0

0

 

 

404

¹⁄₂

33

8

¹⁄₂

0

0

1

8

 

 

35

 

2

11

 

0

0

1

0

 

 

414

³⁄₄

34

6

³⁄₄

1

0

1

8

 

 

47

 

3

11

 

0

0

0

1

 

 

416

¹⁄₂

34

8

¹⁄₂

0

0

0

9

 

 

51

¹⁄₄

4

3

¹⁄₄

0

1

1

0

 

 

420

³⁄₄

35

0

³⁄₄

0

1

1

8

 

 

57

¹⁄₄

4

9

¹⁄₄

1

0

0

1

 

 

426

³⁄₄

35

6

³⁄₄

1

0

0

9

 

 

63

¹⁄₄

5

3

¹⁄₄

0

1

0

1

 

 

432

³⁄₄

36

0

³⁄₄

0

1

0

9

 

 

67

¹⁄₄

5

7

¹⁄₄

2

0

0

1

 

 

437

 

36

5

 

2

0

0

9

 

 

73

¹⁄₄

6

1

¹⁄₄

1

1

0

1

 

 

443

 

36

11

 

1

1

0

9

 

 

81

¹⁄₄

6

9

¹⁄₄

0

0

1

1

 

 

450

³⁄₄

37

6

³⁄₄

0

0

1

9

 

 

93

¹⁄₄

7

9

¹⁄₄

0

0

0

2

 

 

461

 

38

5

 

1

0

1

9

 

 

97

¹⁄₄

8

1

¹⁄₄

0

1

1

1

 

 

462

³⁄₄

38

6

³⁄₄

0

0

0

10

 

 

102

¹⁄₂

8

6

¹⁄₂

1

0

0

2

 

 

466

³⁄₄

38

10

³⁄₄

0

1

1

9

 

 

109

¹⁄₄

9

1

¹⁄₄

0

1

0

2

 

 

472

 

³⁄₄

39

4³⁄₄

1

0

0

10

 

 

113

¹⁄₂

9

5

¹⁄₂

2

0

0

2

 

 

478

³⁄₄

39

10

³⁄₄

0

1

0

10

 

 

119

¹⁄₂

9

11

¹⁄₂

1

1

0

2

 

 

483

 

40

3

 

2

0

0

10

 

 

127

¹⁄₄

10

7

¹⁄₄

0

0

1

2

 

 

489

 

40

9

 

1

1

0

10

 

 

137

¹⁄₂

11

5

¹⁄₂

1

0

1

2

 

 

496

³⁄₄

41

4

³⁄₄

0

0

1

10

 

 

139

¹⁄₄

11

7

¹⁄₄

0

0

0

3

 

 

507

 

42

3

 

1

0

1

10

 

 

143

¹⁄₂

11

11

¹⁄₂

0

1

1

2

 

 

508

³⁄₄

42

4

³⁄₄

0

0

0

11

 

 

149

¹⁄₂

12

5

¹⁄₂

1

0

0

3

 

 

513

 

42

9

 

0

1

1

10

 

 

155

¹⁄₂

12

11

¹⁄₂

0

1

0

3

 

 

519

 

43

3

 

1

0

0

11

 

 

159

³⁄₄

13

3

³⁄₄

2

0

0

3

 

 

525

 

43

9

 

0

1

0

11

 

 

165

³⁄₄

13

9

³⁄₄

1

1

0

3

 

 

529

¹⁄₄

44

1

¹⁄₄

2

0

0

11

 

 

173

¹⁄₂

14

5

¹⁄₂

0

0

1

3

 

 

535

¹⁄₄

44

7

¹⁄₄

1

1

0

11

 

 

183

³⁄₄

15

3

³⁄₄

1

0

1

3

 

 

543

 

45

3

 

0

0

1

11

 

 

185

¹⁄₂

15

5

¹⁄₂

0

0

0

4

 

 

553

¹⁄₄

46

1

¹⁄₄

1

0

1

11

 

 

189

³⁄₄

15

9

³⁄₄

0

1

1

3

 

 

555

 

46

3

 

0

0

0

12

 

 

195

³⁄₄

16

3

³⁄₄

1

0

0

4

 

 

559

¹⁄₄

46

7

¹⁄₄

0

1

1

11

 

 

201

³⁄₄

16

9

³⁄₄

0

1

0

4

 

 

565

¹⁄₄

47

1

¹⁄₄

1

0

0

12

 

 

206

 

17

2

 

2

0

0

4

 

 

571

¹⁄₄

47

5

¹⁄₄

0

1

0

12

 

 

212

 

17

8

 

1

1

0

4

 

 

575

¹⁄₂

47

11

¹⁄₂

2

0

0

12

 

 

219

³⁄₄

18

3

³⁄₄

0

0

1

4

 

 

581

¹⁄₂

48

5

¹⁄₂

1

1

0

12

 

 

230

 

19

2

 

1

0

1

4

 

 

589

¹⁄₄

49

1

¹⁄₄

0

0

1

12

 

 

231

³⁄₄

19

3

³⁄₄

0

0

0

5

 

 

599

¹⁄₂

49

11

¹⁄₂

1

0

1

12

 

 

236

 

19

8

 

0

1

1

4

 

 

601

¹⁄₄

50

1

¹⁄₄

0

0

0

13

 

 

242

 

20

2

 

1

0

0

5

 

 

605

¹⁄₂

50

5

¹⁄₂

0

1

1

12

 

 

248

 

20

8

 

0

1

0

5

 

 

611

¹⁄₂

51

11

¹⁄₂

1

0

0

13

 

 

252

 

21

0

 

2

0

0

5

 

 

617

¹⁄₂

51

5

¹⁄₂

0

1

0

13

 

 

258

 

21

6

 

1

1

0

5

 

 

621

¹⁄₂

51

9

¹⁄₂

2

0

0

13

 

 

266

 

22

2

 

0

0

1

5

 

 

627

¹⁄₂

52

3

¹⁄₂

1

1

0

13

 

 

276

 

23

0

 

1

0

1

5

 

 

635

¹⁄₂

52

11

¹⁄₂

0

0

1

13

 

 

278

 

23

2

 

0

0

0

6

 

 

645

¹⁄₂

53

9

¹⁄₂

1

0

1

13

 

 

282

 

23

6

 

0

1

1

5

 

 

647

¹⁄₂

53

11

¹⁄₂

0

0

0

14

 

 

288

 

24

0

 

1

0

0

6

 

 

651

¹⁄₂

54

3

¹⁄₂

0

1

1

13

 

 

294

³⁄₄

24

6

³⁄₄

0

1

0

6

 

 

657

¹⁄₂

54

9

¹⁄₂

1

0

0

14

 

 

298

¹⁄₄

24

10

¹⁄₄

2

0

0

6

 

 

663

¹⁄₂

55

3

¹⁄₂

0

1

0

14

 

 

304

¹⁄₄

25

4

¹⁄₄

1

1

0

6

 

 

667

³⁄₄

55

7

³⁄₄

2

0

0

14

 

 

312

 

26

0

 

0

0

1

6

 

 

673

³⁄₄

56

1

³⁄₄

1

1

0

14

 

 

322

¹⁄₄

26

10

¹⁄₄

1

0

1

6

 

 

681

¹⁄₂

56

9

¹⁄₂

0

0

1

14

 

 

324

 

27

0

 

0

0

0

7

 

 

691

³⁄₄

57

7

³⁄₄

1

0

1

14

 

 

328

¹⁄₄

27

4

¹⁄₄

0

1

1

6

 

 

693

¹⁄₂

57

9

¹⁄₂

0

0

0

15

 

 

334

¹⁄₄

27

10

¹⁄₄

1

0

0

7

 

 

697

³⁄₄

58

1

³⁄₄

0

1

1

14

 

 

340

¹⁄₄

28

4

¹⁄₄

0

1

0

7

 

 

703

³⁄₄

58

7

³⁄₄

1

0

0

15

 

 

344

¹⁄₂

28

8

¹⁄₂

2

0

0

7

 

 

709

³⁄₄

59

1

³⁄₄

0

1

0

15

 

 

350

¹⁄₂

29

2

¹⁄₂

1

1

0

7

 

 

714

 

59

6

 

2

0

0

15

 

 

358

¹⁄₄

29

10

¹⁄₄

0

0

1

7

 

 

720

 

60

0

 

1

1

0

15

 

 

368

¹⁄₂

30

8

¹⁄₂

1

0

1

7

 

 

727

³⁄₄

60

7

³⁄₄

0

0

1

15

 

 

370

¹⁄₄

30

10

¹⁄₄

0

0

0

8

 

 

738

 

61

6

 

1

0

1

15

 

 

374

¹⁄₂

31

2

¹⁄₂

0

1

1

7

 

 

739

³⁄₄

61

7

³⁄₄

0

0

0

16

 

 

380

¹⁄₂

31

8

¹⁄₂

1

0

0

8

 

 

744

 

62

0

 

0

1

1

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 12
Image 12
Lennox Hearth HCI-36-H, RDI-36-H Special Offset Instructions, Offset Calculations, FTF8 Vertical Elevation Chart

RDI-36-H, HCI-36-H specifications

The Lennox Hearth HCI-36-H and RDI-36-H represent a pinnacle of innovation and efficiency in the world of gas fireplaces. These models are highly regarded for their combination of aesthetic appeal, advanced technology, and exceptional performance, making them an excellent choice for both new constructions and retrofitting existing spaces.

Starting with the HCI-36-H, this direct vent gas fireplace is designed for optimal heating while providing a stunning visual centerpiece. It features a sleek glass front that enhances the flame experience, showcasing the lifelike faux logs and glowing embers. The HCI-36-H is equipped with a powerful heat exchanger that maximizes heat output, ensuring your space remains warm and comfortable.

On the other hand, the RDI-36-H offers a more customizable experience. This model features a variety of decorative options, allowing homeowners to personalize their fireplace to fit their home’s aesthetic. From customizable front panels to decorative trim kits, the RDI-36-H is designed to cater to individual tastes while ensuring robust functionality.

Both models incorporate advanced technologies that improve energy efficiency and user experience. They utilize Lennox's patented flame technology, which creates a realistic fire while maintaining high efficiency. This technology also helps reduce emissions, making it an environmentally friendly choice. With an impressive efficiency rating, both units provide substantial warmth without excessive energy consumption.

User convenience is another significant aspect of these fireplaces. They come with an easy-to-use remote control, allowing you to adjust the flame height and heat output from the comfort of your couch. Additionally, the units offer a variety of safety features, including an automatic shut-off system that ensures peace of mind.

The HCI-36-H and RDI-36-H also boast a quick and straightforward installation process thanks to their direct vent capabilities, which minimize the need for extensive ductwork. This makes them ideal for existing living spaces, as well as new homes.

In conclusion, the Lennox Hearth HCI-36-H and RDI-36-H gas fireplaces epitomize the blend of design, technology, and efficiency. With features like customizable designs, advanced flame technology, and user-friendly operation, these models provide not just warmth, but a beautiful focal point that enhances any room. Whether you prioritize aesthetic or function, Lennox offers two exceptional options that cater to a variety of preferences.