AllFuel HST AF-HST Installation Instructions Manual

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AllFuel HST Model AF-HST

6" & 8" Diameter Installation Instructions

A MAJOR CAUSE OF CHIMNEY RELATED FIRES IS

FAILURE TO MAINTAIN REQUIRED CLEARANCES

(AIR SPACES) TO COMBUSTIBLE MATERIALS. IT

IS OF THE UTMOST IMPORTANCE THAT THIS

CHIMNEY BE INSTALLED ONLY IN ACCORDANCE

WITH THESE INSTRUCTIONS.

Note: Read through all these instructions before beginning your installation.

Failure to install the chimney as described in these instructions will void the

manufacturer's warranty and may have an effect on your homeowner insurance

and UL listing status. K eep these instructions for future use.

Dear Customer, Installer, or End User:

We welcome any comments regarding matters pertaining to our AllFuel HST products.

If you have any questions, complaints, ideas, or inquiries please do not hesitate to

Email:

s ales@allfuelhst.com

Phone: (833) 326-8368

AllFuel HST Inc

1424 SW Pine Island Rd,

Ste 42 #319

Cape Coral, FL 33991

Telephone: (833) 326-8368

Email:

s ales@allfuelhst.com

AllFuelHST.com

www.allfuelhst.com

Toll-Free (833) 326-8368

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Summary of Contents for AllFuel HST AF-HST

Page 1 UL listing status. K eep these instructions for future use. Dear Customer, Installer, or End User: We welcome any comments regarding matters pertaining to our AllFuel HST products. If you have any questions, complaints, ideas, or inquiries please do not hesitate to contact us directly.
Page 2: Table Of Contents
PG 2 For the most up-to-date installation instructions, planning guides, and video instructions visit our Learning Center at https://allfuelhst.com/pages/learning-center-home Contents Clearances……………………………………………………………………………..3 Permits………………………………………………………………………………..….3 Model AF-HST Applications………………………………………………………...….3 Chimney Diameter…………………………………………………………………...….3 Chimney Height……………………………………………………………………..…..3 Chimney Placement…………………………………………………………………..4 Chimney Enclosure Requirements………………………………………………..…..4 Cold Climate Installation………………………………………………………………..5 Stove Recommendations……………………………………………………………..5 Step-By-Step Installation Instructions………………………………………………...5 Ceiling Supported Installation………………………………………………………..5...
Page 3: Clearances
MODEL AF-HST APPLICATION Model AF-HST chimney is U L 103 Type HT double wall insulated chimney, which can be used with wood stoves, fireplaces, fireboxes, furnaces, boilers, water heaters, stoves, ranges, or other residential-type appliances fueled by oil, gas, coal, or wood, that require a chimney system.
Page 4: Chimney Placement
PG 4 The Tee Support can hold a maximum of 5 0 feet of AllFuel HST Chimney. The required parts and general configuration are as shown in Figures 21 and 22. CHIMNEY PLACEMENT When deciding the location of your chimney, try to avoid modifications to roof beams, trusses, wall studs, and other structural components of the building.
Page 5: Cold Climate Installation
STOVE RECOMMENDATIONS Follow the stove manufacturer’s instructions. The requirements stated below pertain to all stoves or other appliances installed with Model AF-HST systems. Choice: Choose an appliance that is listed by a recognized testing laboratory, is appropriate for your needs, and is not larger than required.
Page 6 Cut a square hole in the ceiling for the Ceiling Support Box to pass through. Frame a level, square opening centered over the hole which you have cut between the joists (Fig 3 & 4). AllFuel HST Inc w ww.allfuelhst.com...
Page 7: Flat Ceiling Installation
(min. of 12 total). Alternatively, you may use 1-½” #8 wood screws (min. of 12 total), instead of nails. Next, secure the Trim Collar to the framing members using the provided hardware. AllFuel HST Inc w ww.allfuelhst.com Toll Free: (833) 326-8368...
Page 8: Multi-Story Installation
Maintain the minimum clearances and dimensions as specified in T able 1 . If Elbows must be used to avoid an obstruction, refer to the Offset Elbow Installation section. AllFuel HST Inc w ww.allfuelhst.com...
Page 9 Insulation Shield where the chimney passes into an attic. Its purpose is to prevent debris and insulation from getting too close to the chimney (Fig 9). An installed Attic Insulation Shield is 15 inches high. In AllFuel HST Inc w ww.allfuelhst.com Toll Free: (833) 326-8368...
Page 10 10. Finish Top: Apply a high-temperature (500℉), non-hardening waterproof sealant around the chimney at the point where the Storm Collar will meet the chimney just above the Roof Flashing, and also along the vertical seam of the chimney AllFuel HST Inc w ww.allfuelhst.com...
Page 11: Offset Elbow Installation
Locking bands are included and must be used at all chimney joints. Attach one Elbow to the AllFuel HST Inc w ww.allfuelhst.com...
Page 12 Elbows are supported. Be sure that the chimney remains vertical. If there is more than one Chimney Section between the Elbows, install a second Elbow Strap around the joint of the two Chimney Sections (Fig 12). AllFuel HST Inc w ww.allfuelhst.com...
Page 13: Extended Roof Brace Installation
60° angle with the chimney, and with each other (Fig 13 & 14). Be sure that there is at least 3” of overlap between the top and bottom halves of the Adjustable Leg. In order to secure Legs in proper position, there is a hole AllFuel HST Inc w ww.allfuelhst.com...
Page 14: Roof Supported Installation
Supported Installation (Steps 1 through 5, page 5-9). If a separate ceiling and roof exists, as shown in Figure 16 (Low Attic), first cut and frame a ceiling opening as described in Ceiling Supported Installations (Step 2, page 6). Refer AllFuel HST Inc w ww.allfuelhst.com...
Page 15 1-½” #8 screws, per side (Fig 20). 4. Complete Installation: Refer to Steps 7, 9 & 10 (pages 9-11) in the Ceiling Supported Installation section to complete the Roof Supported installation. AllFuel HST Inc w ww.allfuelhst.com Toll Free: (833) 326-8368...
Page 16 (Fig 17). The Roof Support Bracket can support a maximum of 45 feet of AF-HST total, and a maximum of 20 feet below the support. 1. Cut and frame the opening in the roof to provide a minimum of 2” clearance on all sides of the chimney pipe.
Page 17 Maintain a minimum of 2” clearance to combustibles at all times. The AF-HST chimney needs to extend a minimum of 3” below the finished ceiling or exposed framing members. Please note that you cannot...
Page 18 Attach the Roof Support Brackets to the floor joists using (4) 8-penny nails or (4) #8, 1-½” screws per side (Fig 18). 3. Determine how much AF-HST chimney will be extending into the room (minimum of 3” below the framing), and attach the Roof Support Band to the chimney section by tightening the bolt.
Page 19: Tee-Supported Installation
Tee-Supported installations are used when passing through a wall to an outside chimney. The Tee Support can hold a maximum of 50 feet of AF-HST chimney. The required parts and general configuration are as shown in Figures 20 & 21.
Page 20 6. Install Flat Roof Flashing: It is recommended that a Tee Supported Chimney be enclosed in a chase. If a chase enclosure has been constructed, you can use a Ventilated Flat Roof Flashing (Fig 25) to seal the chase. AllFuel HST Inc w ww.allfuelhst.com...
Page 21 PG 21 AllFuel HST Inc w ww.allfuelhst.com Toll Free: (833) 326-8368...
Page 22 PG 22 AllFuel HST Inc w ww.allfuelhst.com Toll Free: (833) 326-8368...
Page 23: Masonry Fireplace Installation
Table 3 for chimney height requirements. Always maintain at least 2 inches of clearance to combustible materials, and enclose the chimney where it passes through occupied areas. Use a Wall Bracket for every 8 feet of chimney height. AllFuel HST Inc w ww.allfuelhst.com...
Page 24 PG 24 AllFuel HST Inc w ww.allfuelhst.com Toll Free: (833) 326-8368...
Page 25: Zero-Clearance Fireplace Installation
Radiation Shield in the 1st floor ceiling instead of the Support Box). Always maintain at least 2 inches of clearance to combustibles, and enclose the chimney where it passes through occupied areas. AllFuel HST Inc w ww.allfuelhst.com Toll Free: (833) 326-8368...
Page 26: Chimney Maintenance
6. Chemical Cleaners: Use chemical cleaners only as a last resort, and use only those which the manufacturer specifically warrants as being non corrosive to the chimney liner. AllFuel HST will assume no liability for damage resulting from the use of chemical cleaners.
Page 27 10. Warranty: AllFuel HST proudly offers a limited lifetime warranty on all AF-HST chimney components (excluding the Chimney Cap which are warranted for 5 years).