Heatilator ST42A Owner's Manual
Heatilator ST42A Owner's Manual

Heatilator ST42A Owner's Manual

Wood burning fireplace
Table of Contents

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Models:
ST42A
Wood Burning Fireplace
Important operating
a n d m a i n t e n a n c e
instructions included.
WARNING
If the information in these instruc-
tions is not followed exactly, a
fi re may result causing property
damage, personal injury, or death.
• Do not store or use gasoline or other fl am-
mable vapors and liquids in the vicinity of
this or any other appliance.
• Do not overfi re. Overfi ring will void your
warranty.
• Comply with all minimum clearances to
combustibles as specifi ed. Failure to
comply may cause house fi re.
Installation and service of this fi replace
should be performed by qualifi ed personnel.
Hearth & Home Technologies suggests NFI
certifi ed or factory-trained professionals, or
technicians supervised by an
NFI certifi ed professional.
NOTICE
DO NOT DISCARD THIS MANUAL
Read, understand
and follow these
instructions for safe
i n s t a l l a t i o n a n d
operation.
Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09
Owner's Manual
Installation and Operation
Leave this manual with
party responsible for
use and operation.
WARNING
Hot screen/mesh and glass doors will cause burns.
DO NOT touch screen/mesh or glass doors until
cooled
NEVER allow children to touch screen/mesh or glass
doors
Keep children away
CAREFULLY SUPERVISE children in same room as
fi replace.
Alert children and adults to hazards of high
temperatures.
High temperatures may ignite clothing or other
fl ammable materials.
Keep clothing, furniture, draperies and other
fl ammable materials away.
WARNING
Fire Risk
For use with solid wood fuel or decorative
gas appliance only.
DO NOT install unvented gas logs.
HOT SURFACES!
Screen/mesh, glass doors
and other surfaces are hot
during operation AND cool
down.
1

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Summary of Contents for Heatilator ST42A

  • Page 1 • For use with solid wood fuel or decorative technicians supervised by an gas appliance only. NFI certifi ed professional. • DO NOT install unvented gas logs. Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 2: Congratulations

    Congratulations on selecting a Heatilator wood burning This owner’s manual should be retained for future refer- fi replace. The Heatilator fi replace you have selected is ence. We suggest you keep it with your other important designed to provide the utmost in safety and reliability.
  • Page 3: Table Of Contents

    B. Wood Burning Inserts Tools and Supplies Needed G. Fireplace System Requirements 13 Reference Materials H. Inspect Fireplace and Components A. Fireplace Dimensions B. Optional Components C. Service Parts D. Contact Information Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 4: Warranty

    Warranty Hearth & Home Technologies Inc. LIMITED LIFETIME WARRANTY Hearth & Home Technologies Inc., on behalf of its hearth brands (”HHT”), extends the following warranty for HHT gas, wood, pellet, coal and electric hearth appliances that are purchased from an HHT authorized dealer. WARRANTY COVERAGE: HHT warrants to the original owner of the HHT appliance at the site of installation, and to any transferee taking ownership of the appliance at the site of installation within two years following the date of original purchase, that the HHT appliance...
  • Page 5 THE EXTENT PROVIDED BY LAW, HHT MAKES NO EXPRESS WARRANTIES OTHER THAN THE WARRANTY SPECIFIED HEREIN. THE DURATION OF ANY IMPLIED WARRANTY IS LIMITED TO DURATION OF THE EXPRESSED WARRANTY SPECIFIED ABOVE. 4021-645B 04-02-09 Page 2 of 2 Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 6: Listing And Code Approvals

    Plant fi bers - Plastic • Any material that can ignite and burn; fl ame proofed or Heatilator is a registered trademark of Hearth & Home not, plastered or un-plastered Technologies Inc. WARNING! Risk of Fire! Hearth & Home Technologies disclaims any responsibility for, and the warranty and agency listing will be voided by the following actions.
  • Page 7: User Guide

    Section 2.J. Firescreen Wood Fuel (not shown) Section 2.M. close Damper Section 2.E. Handle Hearth Glass Doors (not shown) Section 2.H. Clear Space Section 2.L. Figure 2.1 General Operating Parts Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 8: Seasoned Wood

    B. Seasoned Wood D. Grate Properly seasoned wood is important for successful This fi replace is designed to be used with the grate sup- operation of your fi replace. Most woodburning fi replace plied with this unit or one approved by HHT. The grate will problems are caused by burning wet, unseasoned wood.
  • Page 9: Glass Doors

    BEFORE lighting fi re. 48 in. (1219 mm) Clear Space 12 in. (305 mm) Front of Fireplace Clear Space Sides of Fireplace (from the FP opening) Figure 2.3 Clear Space Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 10: Wood Fuel

    M. Wood Fuel Seasoned Wood • Cut logs to size Hardwood vs Softwood • Split to 6 in. (152 mm) or less Your fi replace performance depends on the quality of the • Air dry to a moisture content of around 20% fi...
  • Page 11: Maintenance And Service

    Top Cover Chimney Slip Section TR11/TR11T ST1175 TCT1175 TR444/TR442 Terra Cotta ST475 Round Termination Cap Square Termination Cap Termination Cap Available US only Figure 3.1 Chimney & Termination Cap Cleaning Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 12: Check Firebox Refractory

    C. Check Firebox Refractory Frequency: After each ash removal By: Homeowner WARNING! Risk of Fire! Inspect fi replace refractory. Crumbling, deteriorated refractory can allow overheating of surrounding materials. Expansion and contraction will cause minor cracking of the refractory. This is normal. The refractory will require periodic replacement depending on use.
  • Page 13: Troubleshooting Guide

    Add glass doors to slow down air fl ow. Overdrafting Check for correct vent height; too much vertical height creates overdrafting. Check location of vent termination (refer to chimney assembly section). Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 14: Getting Started

    Installer Guide Getting Started A. Typical Fireplace System Additional lateral NOTICE: support for chimney • Illustrations and photos reflect typical installations above roof (or enclosed and are for design purposes only. in chase) if needed • Illustrations/diagrams are not drawn to scale. (Section 8) •...
  • Page 15: Design And Installation Considerations

    Tight sealing construction of the structure • Mechanical exhausting devices NOTICE: Hearth & Home Technologies Inc. recommends • Improper location of the chimney the use of direct vent fi replaces in basements. Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 16: Locating Fireplace & Chimney

    E. Locating Fireplace & Chimney Location of the fi replace and chimney will affect perfor- mance. • Install within the warm airspace enclosed by the building envelope. This helps to produce more draft, especially during lighting and die-down of the fi re. •...
  • Page 17: Tools And Supplies Needed

    Outside Air Hood (sold separately) Duct (required for outside air installation, sold separately) • Chimney Air Kit (required in Canada) • Chimney System (required, sold separately) • Termination Cap (required, sold separately) Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 18: Framing & Clearances

    Framing & Clearances A. Select Fireplace Location 66 in. Note: 1/2 in. (13 mm) distance (1676 mm) f r o m f i r e p l a c e t o 42 in. combustible materials. (1067 mm) (hearth Note: In addition to these extension) 20 in.
  • Page 19: Clearances

    1219 mm 0 in. to floor Figure 6.2 Clearances to Combustible Materials Note: Chimney air kit and 11-10 in./279-254 mm adapter are not shown, but are required in Canada. Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 20: Sidewalls/Surrounds

    C. Sidewalls/Surrounds • Adjacent combustible sidewalls must be located a minimum of 12 in. (305 mm) from the fi replace opening. • Combustible and non-combustible mantel legs, surrounds and stub walls may be constructed within the gridded area, Figure 6.3. Gridlines at 1 in.
  • Page 21: Installation Of Fireplace

    fl ange. • Check fi replace opening for square to ensure proper fi t of glass doors. Measure diagonals of fi replace opening to make sure they are equal. Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 22 3 ft min. from top of uppermost chimney section to air inlet. Note: Chimney air kit and 11-10 in. /279 -25 4 mm adapter are not shown, but are required in Canada. Figure 7.3 Possible Outside Air Inlet Locations Garage or Outlet blocked by combustible snow, leaves, etc.
  • Page 23: Install Outside Air Kit

    Blockages could cause combustion air starvation. Flexible Duct (not supplied) Outside Air Plate Outside Air Assembly Shield 2 Wire Ties Figure 7.5 Outside Air Installation Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 24: Chimney Assembly

    Chimney Assembly NOTICE: Chimney performance may vary. • Trees, buildings, roof lines and wind conditions affect performance. • Chimney height may need adjustment if smoking or overdraft occurs. Chimney must extend Termination Cap beyond combustible roof structure Additional support for Maintain minimum tall chimneys height of chimney...
  • Page 25: Chimney Requirements

    58-7/8 in. Canada. SLA10 16-3/4 (1495 mm) a,b,c,f Effective * Dimensions refl ect effective height. Height Figure 8.2 Chimney Requirements (refer to list in Sect. 5.A.) Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 26: Using Offsets/Returns

    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 fi...
  • Page 27: Assemble Chimney Sections

    Vertical straight runs of chimney must be supported every 35 ft (10.7 m). D. Install Chimney Air Kit • Required in Canada. • Follow instructions provided with this accessory. Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 28: Install Ceiling Firestops

    E. Install Ceiling Firestops ROOM ABOVE (non-insulated ceiling) CAUTION! Risk of Fire! Ceiling fi restops must be used whenever the chimney penetrates a ceiling/fl oor. • Chase construction requires ceiling fi restops at each fl oor or every 10 ft (3.05 m) of clear space. •...
  • Page 29: Install Attic Insulation Shield

    17 in. (432 mm) diameter 6 Tabs bent in 90° Insulation Insulation 13 in. Ceiling Firestop Pipe (330 mm) Figure 8.8 Install Attic Insulation Shield (fi restop below ceiling) Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 30: Cut Out Hole In Roof

    G. Cut out Hole in Roof • Refer to Figure 8.9. • Plumb from roof to center of chimney. • Drive a nail up through roof to mark center of pipe. • Measure to either side of nail and mark the 17 in. x 17 in.
  • Page 31: Chimney Termination Requirements

    In a staggered installation with both gas and wood terminations, the wood termination cap must be higher than the gas termination cap. Figure 8.10 Multiple Chimney Locations Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 32: Chase Installations

    Chase Installations Gas line holes and other openings should be caulked with A. Construct the Chase high temperature caulk or stuffed with unfaced fi berglass A chase is a vertical boxlike structure built to enclose the insulation. If the fi replace is being installed on a cement fi...
  • Page 33: Install Fireplace & Chimney

    WARNING! Risk of Fire! DO NOT caulk the pipe to the Galvanized chase top collar. Chase Top • Caulk all seams to prevent leaks. • Refer to Figure 9.3. Figure 9.3 Chase Top Construction Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 34: Install Termination Cap

    D. Install Termination Cap • TR11T/TR442 Round Telescoping Termination Cap Install the chimney sections up through the chase enclo- Assemble sure. Termination storm collar around extended • Refer to termination cap instructions. termination cap pipe WARNING! Risk of Fire! The minimum overlap of cap once cap is installed.
  • Page 35 2 in. (51 mm) 7 in. (178 mm) Chase Chimney Pipe Termination cap pipe and chimney section must overlap 1-1/2 in. (38 mm) Figure 9.7 Installing a TCT1175 Terra Cotta Cap Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 36: Shrouds

    Shrouds A. Radiation Shield Ø 17 1/2 in. (444.5 mm) Round Hole to fit over cap • Some shrouds require a radiation shield. Use where specifi ed. • Radiation shield must be constructed of minimum 26 ga sheet metal. B. Field Constructed Shrouds 3 in.
  • Page 37 34 x 34 34 x 34 864 x 864 864 x 864 Min. Height Above Radiation Shield Min. Opening Width Min. Opening Height Figure 10.4 Roofed Style Shroud Dimensions Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 38: Finishing

    11 11 Finishing • You MUST use a hearth extension with this fi replace. A. Non-Combustible Materials • This fi replace has been tested and approved for use with • Materials which will not ignite and burn, composed of a hearth extension insulated to a minimum R value of any combination of the following: 1.03.
  • Page 39: Finishing Material

    2 in. (51 mm) Figure 11.3 Decorative Facing Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 40: Combustible Mantel

    E. Combustible Mantel • Refer to shaded areas of Figure 11.4 for locations and dimensions of a combustible 7 ft (2134 mm) mantel. minimum • A combustible mantel may be positioned no base of fireplace to ceiling lower than 12 in. (305 mm) above the top of the fi...
  • Page 41: Accessories

    Repack beyond 4 in. (102 mm) insulation from fireplace side. knockout 4 in. (102 mm) Figure 12.1 Gas Line Installation Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 42: Reference Materials

    Reference Materials A. Fireplace Dimensions...
  • Page 43: Optional Components

    66 in. (1676 mm) 20 in. (508 mm) 1/2 in. (13 mm) HX4 Hearth Extension DM1242 Bi-fold Glass Doors See your Heatilator dealer for a complete listing of optional components. Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 44 B. Chimney Components The following pictures show only those chimney components which may be safely used with this fi replace. Catalog # ID4 Insulated Duct Description 4 in. (102 mm) i CAK5A CAK5A Chimney Air Kit Insulated Duct/Outside Air 42 in. (1067 mm) Uninsulated Duct/Outside Air SL1106...
  • Page 45 13 in. 28 in. (330 mm) 39-7/8 in. (711 mm) (1013 mm) CB576 Chimney Joint Band RF571 Roof Flashing 10 3/4 in. 26 in. TR-TVK TR Top Vent Kit CT-11A Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 46 72 in. 36 in. (1829 mm) (914 mm) 13-3/8 in. (340 mm) 15-3/4 in. (400 mm) 2 in. TR11/TR444 - Round Termination Cap (51 mm) CT56 Chase Top 32-3/8 in. (822 mm) 34-3/8 in (873 mm) TR11T/TR442 - Round Telescoping Termination Cap 23 in.
  • Page 47: Service Parts

    C. Service Parts Heatilator • ST42A US-CAN • 4012-039 • Rev I • 05/09...
  • Page 48: Contact Information

    1915 W. Saunders Street Mt. Pleasant, Iowa 52641 www.heatilator.com Please contact your Heatilator dealer with any questions or concerns. For the number of your nearest Heatilator dealer, please visit www.heatilator.com. – NOTES – CAUTION DO NOT DISCARD THIS MANUAL •...

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